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ITech IT7900P Series User Manual

High performance regenerative grid simulator
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High Performance
Regenerative Grid
Simulator
IT7900P Series User Manual
Model: IT7900P
Version: V1.1/08.2024

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Summary of Contents for ITech IT7900P Series

  • Page 1 High Performance Regenerative Grid Simulator IT7900P Series User Manual Model: IT7900P Version: V1.1/08.2024...
  • Page 2 Notices Warranty Safety Notices © Itech Electronic, Co., Ltd. 2023 The materials contained in this No part of this manual may be document are provided “as is”, and reproduced in any form or by any is subject to change, without prior means ( including electronic storage notice, in future editions.
  • Page 3 Warranty ITECH warrants that the product will be free from defects in material and workmanship under normal use for a period of one ( 1) year from the date of delivery ( except those described in the Limitation of Warranty below).
  • Page 4 Failure to comply with these precautions or specific warnings elsewhere in this manual will constitute a default under safety standards of design, manufacture and intended use of the instrument. ITECH assumes no liability for the customer’s failure to comply with these precautions.
  • Page 5 Operating humidity 20%～80%( non-condensation) -10°C～70 °C Storage temperature Operating up to 2,000 meters Altitude Installation category Pollution degree Pollution degree 2 Note To make accurate measurements, allow the instrument to warm up for 30 min. Copyright ©ITECH Electronic Co., Ltd.
  • Page 6 With reference to the equipment classifications described in the Annex 1 of the WEEE Directive, this instrument is classified as a “Monitoring and Control Instrument”. To return this unwanted instrument, contact your nearest ITECH office. Copyright ©ITECH Electronic Co., Ltd.
  • Page 7 2. Connection of the instrument to a test object may produce radiations beyond the specified limit. 3. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above. Safety Standard IEC 61010-1:2010/ EN 61010-1:2010 Copyright ©ITECH Electronic Co., Ltd.
  • Page 8 5.6 Professional Anti-islanding Test Mode ....................... 52 5.7 Waveform Selection ............................53 5.8 Full 4-Quadrant Power Amplifier ........................54 5.9 Auto-range Function ............................54 5.10 Programmable Output Impedance ........................55 5.11 Sweep Function ..............................55 Copyright ©ITECH Electronic Co., Ltd.
  • Page 9 7.13 Setting of Surge/Sag Configuration ........................ 109 7.14 Self-defined Waveform Function ........................111 7.14.1 THD ............................111 7.14.2 User-defined waveform ......................113 7.15 Protection Function ............................114 7.15.1 Out-of-range frequency protection ..................114 7.15.2 Undervoltage protection ......................115 Copyright ©ITECH Electronic Co., Ltd.
  • Page 10 11.4 GPIB Interface (Optional) ..........................172 11.5 RS–232 Interface (Optional) ........................... 173 11.6 Commonly Used Commands Overview ......................174 11.7 Demo Software Introduction ......................... 175 Appendix ................................176 Specifications of Red and Black Test Lines ......................176 Copyright ©ITECH Electronic Co., Ltd.
  • Page 11 1.1 Brief Introduction ITECH IT7900P series represents a new generation of programmable, full power source and sink 4-Quadrant grid simulators and also can perform as a 4- Quadrant power amplifier, providing the flexibility to test widest range of grid-tied devices, including PCS, energy storage systems, micro grids, BOBC (V2X) and power-related hardware in the loop emulation (PHiL).
  • Page 12 AC mode supports both rectified and non-rectified modes ⚫ ⚫ Adjustable crest factor: 1.414 ~ 5.0 Support phase shift function in the range of -180º~180º ⚫ ⚫ The unit power factor1 function allows the current waveform to vary with the Copyright ©ITECH Electronic Co., Ltd.
  • Page 13 The IT7900P series supports the following optional accessories (sold separately), the details are as below: The interface expansion slot provided on the rear panel of the IT7900P series instrument allows users to flexibly expand according to their needs. Different interface cards can be selected to achieve different functions.
  • Page 14 1.4 Instrument Size Introduction The instrument should be installed at well-ventilated and rational-sized space. Please select appropriate space for installation based on the power supply size. IT7905P-350-30U/IT7906P-350-90/IT7909P-350-90/IT7912P-350-90/IT7915P-350-90 Model Copyright ©ITECH Electronic Co., Ltd.
  • Page 15 Overview IT7930P-350-180 Model Copyright ©ITECH Electronic Co., Ltd.
  • Page 16 Overview IT7945P-350-270 Model Copyright ©ITECH Electronic Co., Ltd.
  • Page 17 Overview IT7960P-350-360/IT7975P-350-450/IT7990P-350-540/IT79105P-350-630 Model Copyright ©ITECH Electronic Co., Ltd.
  • Page 18 Overview IT79120P-350-720/IT79135P-350-810/IT79150P-350-900/IT79165P-350-990 Model Copyright ©ITECH Electronic Co., Ltd.
  • Page 19 ⚫ It is not advisable to push down the slope to prevent the cabinet from falling down due to the shift of the center of gravity. It is rec- ommended Copyright ©ITECH Electronic Co., Ltd.
  • Page 20 ⚫ ITECH 27U and 37U cabinets are equipped with hoisting rings as standard on the top. It is recommended to use a crane equipped with a four-leg hoisting belt structure for horizontal hoisting and moving, and ensure that the four hoisting belts are the same length to avoid cabinet skew during movement.
  • Page 21 5 Number key 6 Up, down, left and right key and enter key 7 Rotary knob 8 Vent hole 2.4 Keyboard The keyboard introduction of IT7900P series Power Supply is shown as follows. Keys Description Print Used for saving screen images...
  • Page 22 [Shift]+ (Surge&Sag) Enter the standard wave selection [Shift]+ (Standard) interface. [Shift]+[1](Log) Enter the data logging function menu. [Shift]+ [2] (Lock) Turn the keyboard lock on or off. [Shift]+[3] (Local) Switch remote control mode to local Copyright ©ITECH Electronic Co., Ltd.
  • Page 23 [Shift]+ [7] (Help) Obtain the help information. 2.5 Push-on Knob The IT7900P series Power Supply provides a knob on the front panel as shown in the next figure. The functions of the posh-on knob is described as follows. ⚫...
  • Page 24 Instrument Introduction 2.6 Rear Panel The rear panel of the IT7900P series 3U model is shown below. Name Description ground terminal Ground screw for making chassis ground connections. Output AC or DC output terminals and chassis ground terminals(M6) terminals, used to connect DUT.
  • Page 25 Port spacing is 10.16mm, screw M4 hole size. The rear panel of IT7900P series 15U and above series cabinets are the same. Take IT7945P-350-270 as an example, the rear panel is introduced as shown below.
  • Page 26 Instrument Introduction Copyright ©ITECH Electronic Co., Ltd.
  • Page 27 Connecting the power cord The standard power cord specifications for this series are divided into the following types according to different regions: Copyright ©ITECH Electronic Co., Ltd.
  • Page 28 AC distribution box (the rated AC current on L3 is 0, so, it can be connected or not). In case multiple units are connected to the same main AC distribution box. It is recommended to follow the suggestion connection diagram as below. Single phase input connecting: Copyright ©ITECH Electronic Co., Ltd.
  • Page 29 Installation Multiple power supplies connect to three phase input: ⚫ When connecting the instrument which rated power is 6kVA or above. The AC input is three phase and balanced, connecting the power cord as below. Copyright ©ITECH Electronic Co., Ltd.
  • Page 30 All test lines shall be capable of withstanding the maximum short circuit output current of the power supply without causing overheat. Copyright ©ITECH Electronic Co., Ltd.
  • Page 31 ⚫ Always use test lines provided by ITECH to connect the equipment. If test lines from other factories are used, please check that the test line can withstand maximum current.
  • Page 32 When the output voltage has DC voltage, the output terminal A is positive, and B is negative. ⚫ The connection diagram of multi-channel is shown as follow: Multi-channel mode is only available for Voltage Source mode. Copyright ©ITECH Electronic Co., Ltd.
  • Page 33 The T7930P-350-180 consists of two 15kVA in parallel mode. Connect the Remote sense terminals of master module. The wiring method is the same as other models. ⚫ The connection diagram of single phase is shown as follow: Copyright ©ITECH Electronic Co., Ltd.
  • Page 34 N terminal of the IT7900P does not need to be connected to the object, but the N line of the Sense terminal needs to be connected to the N terminal of the output terminal. Copyright ©ITECH Electronic Co., Ltd.
  • Page 35 After receiving the instrument, users need to install the yellow fiber cable by themselves. Copyright ©ITECH Electronic Co., Ltd.
  • Page 36 Fiber optic cables cannot be flexed or folded. When the cable is too long and needs to be arranged, gently wrap the cable in a circle and gently tie it. As shown in the following figure, connect the System Bus between the master and slave by fiber cords. Copyright ©ITECH Electronic Co., Ltd.
  • Page 37 The disconnect device must be close to the equipment, be easily accessible, and be marked as the disconnect device for this equipment. Copyright ©ITECH Electronic Co., Ltd.
  • Page 38 User can adjust the power switch directly to turn on or turn off the instrument. The status of Power switch is as follows. The switching knob of the IT7900P series power supply allows the user to turn the power on by 90° clockwise or to turn the power off by 90° counterclockwise.
  • Page 39 Getting Started Single Phase Mode The meter interface of IT7900P series power supply is shown as follow. Status bar Voltage setting&meter value Frequency setting&meter value Display area of measuring data Three Phase Mode The meter interface of IT7900P three phase mode is shown as follow.
  • Page 40 Multi-channel AC+DC Multi-channel AC mode mode Multi-channel DC+AC Multi-channel DC mode mode The AC source is in Surge&Sag function remote mode indicator External Simulation Test Record log Function LIST is running LIST is finished Copyright ©ITECH Electronic Co., Ltd.
  • Page 41 Wye connection and 3- phase online CR+CV mode Wye connection and lost phase state External Simulation Test Record log Function LIST is running LIST is finished LIST function is waiting for Sweep function is trigger waiting for trigger Copyright ©ITECH Electronic Co., Ltd.
  • Page 42 Press the [Menu] key on the front panel and enter to the menu interface. Menu interface will display all of function icon, user can rotate the knob or direction key to select, or click the screen to enter the function interface. Copyright ©ITECH Electronic Co., Ltd.
  • Page 43 Once the data in the cursor position increases to ten, the value will add one to the front position automatically. and once the data in the cursor Copyright ©ITECH Electronic Co., Ltd.
  • Page 44 (0V) to IO-1 in the default setting. at which time the [On/Off] key light is on and there is no actual output. Restoring a high level (5V) on IO-1 restores the output on. 1. Go to the System→I/O menu. Copyright ©ITECH Electronic Co., Ltd.
  • Page 45 5. Input 0V to Pin1 (positive) and Pin PE (negative), or directly short Pin1 and Pin PE. At this point, output is disabled. 6. Input 5V to Pin1 (positive) and Pin PE (negative), or disconnect the short wire between Pin1 and Pin PE. At this point, output is restored. Copyright ©ITECH Electronic Co., Ltd.
  • Page 46 Source mode. 5.1 full 4-Quadrant output character The IT7900P series represent the newest generation of programmable, full four- quadrant grid simulators with full 100% of current rating in both source and sink mode, and provides energy recovery capability.
  • Page 47 5.3 Select the Output Mode The IT7900P series has four output modes: AC, DC, AC+DC, DC+AC. It not only provides pure AC/DC output, but also can use AC+DC and DC+AC output modes to realize "AC output plus DC bias" And "DC output waveform with ripple", which cover a wider range of applications.
  • Page 48 5.3.1 AC Output Mode If the output mode select to AC Mode, the instrument will simulate AC power supply. The default set of IT7900P series power supply is AC Mode. Set the output parameters of the power supply in the main interface, including the output voltage, output frequency.
  • Page 49 DC power supply. If there are strict noise requirements, additional DC noise filters are needed to obtain low noise and good stable DC voltage for testing. Copyright ©ITECH Electronic Co., Ltd.
  • Page 50 The Vac setting range is 10% of rated voltage. 5.4 Current Limit Mode and Power Limit Mode The IT7900P series power supply defaults to constant voltage CV output mode. The output voltage can be set in main interface. When the actual current value is higher than the setting current limit value, power supply works in current limit mode, and output voltage will be reduce.
  • Page 51 I- limit Minimum current setting, current setting will be limited to this range. Voltage limit range Voltage limit setting V+ limit Maximum voltage setting, the voltage setting will be limited to Copyright ©ITECH Electronic Co., Ltd.
  • Page 52 The function is mainly used to protect the DUT connected during test to prevent it from damage due to over load. The OCP peak function is always enabled. How to Set Press [Shift]+[Config] (Protect) keys and enter to Protection menu. Copyright ©ITECH Electronic Co., Ltd.
  • Page 53 Clearing over-power protection: In the case of over-power protection, disconnect the tested object at first. Press [Shift]+[Esc] on the front panel (or send the command “PROTection:CLEar”) to clear on the front panel and exit the OPP mode. Copyright ©ITECH Electronic Co., Ltd.
  • Page 54 Voltage Source Mode Operation 5.6 Professional Anti-islanding Test Mode The IT7900P series provide a professional anit-islanding test mode. Users can adjust RLC parameters or configure the parameters of active power and reactive power to simulate islanding status between inverter and load when the main...
  • Page 55 Trigger1-out to get this voltage signal. 5.7 Waveform Selection The user can set the output waveform in the config menu of IT7900 series power supply. Eight output waveforms below are available, user can select the waveform in Config->Waveform menu. Copyright ©ITECH Electronic Co., Ltd.
  • Page 56 5.8 Full 4-Quadrant Power Amplifier The IT7900P series regenerative grid simulator can be used as a power amplifier to complete power hardware in the loop (PHIL) applications for microgrids, energy storage and new energy vehicles. The digital I/O or a standard suite of analog signal can be input via an external analog interface (optional) and then amplified without distortion to a real power waveshape.
  • Page 57 The Sweep function is not supported in multi-channel mode. Operating steps Press [Shift] + [F-set](Sweep)on the front panel to enter the sweep interface, as shown in the figure below. Set the voltage and frequency parameters in the sweep interface. Copyright ©ITECH Electronic Co., Ltd.
  • Page 58 • off: Directly off the output after the execution is finished; • Last: Keep the last waveform unchanged after the execution is finished. Normal: return to normal mode after the sweep execution is finished. Copyright ©ITECH Electronic Co., Ltd.
  • Page 59 List file. Detailed operation steps are as below: Press [Shift]+[Set](list) on the front panel to enter the List function configuration interface, as shown in the figure below. 888.csv: the list file name to execute. Trig source: select the trigger source Copyright ©ITECH Electronic Co., Ltd.
  • Page 60 Time S: width time More: other settings, click … and setup the slew rate, waveform,phase and so Save: Save the list file. Save as: save as a list file. Config: configure the list file to make it effective. Copyright ©ITECH Electronic Co., Ltd.
  • Page 61 If several List files are edited, press Recall to recall the List file to be tested. Detailed operation steps are as below: Press [Shift]+[Set](list) on the front panel to enter the List function configuration interface. Copyright ©ITECH Electronic Co., Ltd.
  • Page 62 5.12.3 Import/Export List file Import List file IT7900P series support import list file function, The user can finish the editing of List file in Excel and import it into the software. This function simplifies the List file edit and facilitates user operation.
  • Page 63 Action This setting is valid when the mode select to Trigger. Immediately: Executing the surge/sag immediately. Phase: Executing the surge/sag at specific angle. Trig source Select the trigger source when the mode select to Trigger. Copyright ©ITECH Electronic Co., Ltd.
  • Page 64 This self-defined waveform can be used as a normal output waveform or as a wave option for scanning waveform, Surge/Sag waveform, and LIST waveform. 5.14.1 THD The distorted waveform can simulate voltage harmonic wave in the circuit. The Copyright ©ITECH Electronic Co., Ltd.
  • Page 65 User THD wave: THD wave of user defined. “+” Create a new THD wave. “-“ Delete the seleted THD wave. “ ” Edit the THD wave. Press the “+” or “ ” enter to the edit interface. Thd profile: THD file name Copyright ©ITECH Electronic Co., Ltd.
  • Page 66 Users can edit a custom harmonic waveform file in .csv format and import it into the instrument. User defined harmonic waveform template files can be obtained by contacting ITECH, or an empty file can be exported directly from the instrument.
  • Page 67 Profile: user-defined file name Origin Symmetry: To select the waveform data type, you can select 512 origin symm/512 origin asymm /1024 points Open: import waveform data. Save: Save the user-define wave. Delete: select a row and click Delete. Copyright ©ITECH Electronic Co., Ltd.
  • Page 68 Index/fval: Data points and detailed parameter values. 5.15 Voltage Sampling The IT7900P series instruments can be used as data sampling devices to collect voltage variation signals from other instrument. With this function, users can realize the acquisition of the actual grid voltage change state of the DUT, and then use the import function to reproduce the grid state.
  • Page 69 Tdms: select the file type for Tdms or CSV ⚫ Export: export the sampling file. ⚫ Run: start to sampling Setting the configuration Click Configure in the voltage sampling interface to enter the parameter setting interface. Copyright ©ITECH Electronic Co., Ltd.
  • Page 70 By default, the open waveform is only for real-time simulation. If you remove the USB disk, the waveform disappears. Users can also permanently save the open waveform to the power supply memory. Directly click Simulation in the Menu to enter the voltage signal Simulation interface, as shown below: Copyright ©ITECH Electronic Co., Ltd.
  • Page 71 Delete: Delete the waveform file. Import: Import and save the waveform file to the power supply memory. Export: Export the waveform file to the U disk. Run: Start running waveform. Power output should be turned on before operation. Copyright ©ITECH Electronic Co., Ltd.
  • Page 72 Voltage Source Mode Operation 5.17 Polyphase Function The IT7900P series power supplies implement the frequency-locked and phase- locked function between power supplies through the digital IO interface or System bus interface, which achieve 6 phase& 12 phase power output. This power supply provides two ways to achieve multi-phase functionality: One is to connect the System bus interface between instruments directly ⚫...
  • Page 73 Set the phase deviation between the Phase Delay output phase and the external I/O input signal: 0-360°. Set the frequency difference upper Freq limit+ limit between the output frequency and the external I/O input signal. Copyright ©ITECH Electronic Co., Ltd.
  • Page 74 Connecting the IO-5 of first power supply to IO-1 of second power supply, and used to synchronize On/Off state. Connecting the IO ground terminals. Power Supply Configuration ⚫ Defining the digital IO-4 Pin User can define the IO function in IO configure menu. Copyright ©ITECH Electronic Co., Ltd.
  • Page 75 Exception Output Disable: stop output ⚫ ⚫ Limit: Output according to the set frequency. Synchronization mode selection (settable only in fiber slave mode). Sync select Local: The slave parameters take effect in real time. Copyright ©ITECH Electronic Co., Ltd.
  • Page 76 Otherwise the second unit cannot turn on the output normally. 5.18 Standard IEC Regulations IT7900P series AC/DC power supplies provide standard test curves in accordance with IEC 61000-4-11/4-13/4-14/4-17/4-28/4-29 regulations. It can be invoked directly by the user when testing IEC compliance tests.
  • Page 77 Voltage dips short interruptions Voltage variations Voltage Voltage value of AC output. User can setting the voltage Copyright ©ITECH Electronic Co., Ltd.
  • Page 78 To perform the IEC 61000- 4-17 test, a test power supply applies a DC voltage with ripple to the DUT and completes the established test at a nominal, high or low DC voltage level to Copyright ©ITECH Electronic Co., Ltd.
  • Page 79 Run time of Ripple test, 0 means continuous running. Stop mode Stop End state Normal Ripple view Ripple frequency Displays ripple DC Umax schematic each Umin parameter. ∠start Enable the Output. Click Run and execute the regulation test. Copyright ©ITECH Electronic Co., Ltd.
  • Page 80 Parameter introduction when Sweep mode is selected for the function category Selection: Calculation method selection, %f is equivalent to base wave percentage mode, Voltage direct voltage setpoint mode. Thd levels: The interharmonic distortion rate setting, depending on Selection, Copyright ©ITECH Electronic Co., Ltd.
  • Page 81 Time / Angle Time / Immediate Trig / Angle Trig / Immediate Angle Setting the angle at which power interruption starts. Only displayed in Time / Angle and Trig / Angle mode. Copyright ©ITECH Electronic Co., Ltd.
  • Page 82 Voltage Source Mode Operation Total drop time, settable in customized mode. Unit: ms Drop time from 90% to 10%. Unit: ms Recovery time from 10% to 90%, Unit: ms Copyright ©ITECH Electronic Co., Ltd.
  • Page 83 700V. And the output mode can be set to AC/AC+DC. 6.2 Select the Output Mode The IT7900P series has four output modes: AC, DC, AC+DC, DC+AC. It not only provides pure AC/DC output, but also can use AC+DC and DC+AC output modes to realize "AC output plus DC bias"...
  • Page 84 DC voltage in the configure menu. ⚫ Iac: you can set the Vac under the main interface or under the config interface. ⚫ DC: set the DC component under the config interface. Copyright ©ITECH Electronic Co., Ltd.
  • Page 85 700V, the input mode can be set to AC/DC. 7.2 Select the Input Mode The IT7900P series load mode supports AC input mode and DC input mode. The user should set the specific input mode according to the desired application.The input mode is selected in the system menu.
  • Page 86 If the input mode select to DC Mode, the instrument will simulate DC load. 7.3 AC Load Function IT7900P series electronic load according to the setting parameters can simulate the AC electronic load. The users can select the load mode in system menu.
  • Page 87 Power Factor: It can be set from -1 to 1. The setting range of power factor is affected by the CF value. This setting has the same function as the Phase shift value and does the conversion with each other. Copyright ©ITECH Electronic Co., Ltd.
  • Page 88 1, as shown below. The Slope is R setting Input Voltage Load Current CR mode Voltage-current Relation in CR Mode Select CR mode Press [Config] and enter to the configuration menu. Select constant mode to Copyright ©ITECH Electronic Co., Ltd.
  • Page 89 If the input voltage increases, the input current will decrease to keep the power P (=V * I) at the set value. Input Voltage Set power value Load Current Voltage-current Relation of CP Mode Copyright ©ITECH Electronic Co., Ltd.
  • Page 90 Power Factor: It can be set from -1 to 1. The setting range of power factor is affected by the CF value. This setting has the same function as the Phase shift value and does the conversion with each other. Copyright ©ITECH Electronic Co., Ltd.
  • Page 91 On: enable the UPF mode, at this situation, the current waveform changes with the voltage waveform and this mode causes power factor to be as close as possible to unity, useful when the input voltage is non-sinusoidal. Copyright ©ITECH Electronic Co., Ltd.
  • Page 92 The electronic load simulates the waveform distortion of some inverters by sinking a nonlinear constant current and a resistor to meet their efficiency test requirements. CC+CR mode schematic diagram Select CC+CR mode Press [Config] and enter to the configuration menu. Select constant mode to CC+CR. Copyright ©ITECH Electronic Co., Ltd.
  • Page 93 In case of wrong input by numeric keys, press to delete the present input. 7.3.6 Circuit Emulation (CE) The electronic load simulates some real power environment of the DUT by setting RLC and other parameters. In the circuit simulation mode, the circuit Copyright ©ITECH Electronic Co., Ltd.
  • Page 94 Different topologies, different parameters are set and different simulation states are achieved. Press [Config] and enter to the configuration menu. Select constant mode to Parallel RLC Rectifier single phase RLC Series RL Series RC R//Series RL R//Series RC L（R//C） Copyright ©ITECH Electronic Co., Ltd.
  • Page 95 Load mode Operation R（L//C） C（R//L） Series RLC R//Series RLC Series RL//Series RC Series RL（R//C） Select CE Mode Press [Config] and enter to the configuration menu. Select constant mode to Copyright ©ITECH Electronic Co., Ltd.
  • Page 96 See figure as follow. The Slope is R setting Input voltage Load Current CR mode 7.4.3 Constant Voltage Mode (CV) In this mode, the electronic load will attempt to sink enough current to control Copyright ©ITECH Electronic Co., Ltd.
  • Page 97 CC mode for sinking. The CV+CC mode can be applied to the load simulation battery and test the charging station or the car charger. When the CV is working, the maximum loading current is limited. Copyright ©ITECH Electronic Co., Ltd.
  • Page 98 UUT for output. When the UUT voltage starts to output, the Load will sink in CV mode according to the programmed voltage. When the voltage rises to exceed the set constant power for sinking, it will switch to CP mode for sinking. Copyright ©ITECH Electronic Co., Ltd.
  • Page 99 The user can choose waveform integrity, including full wave, positive half wave, negative half wave. In this mode, DC current can not be set. Copyright ©ITECH Electronic Co., Ltd.
  • Page 100 Integrity set to Full, the waveform of the power input is rectified in full wave, as shown in the figure below. Integrity set to Positive, the waveform of the power input is rectified in positive half wave, as shown in the figure below. Copyright ©ITECH Electronic Co., Ltd.
  • Page 101 7.6 Waveform Selection The user can set the input waveform in the config menu of IT7900P series load. Eight input waveforms below are available, user can select the waveform in Config->Waveform menu.
  • Page 102 C-phase test line is not connected. Set C phase mode of Load phase loss to Enable in the system menu. When the three-phase mode Delta connection is selected, the function of load phase loss cannot be realized, and it is only available in the Wye-type connection. Copyright ©ITECH Electronic Co., Ltd.
  • Page 103 ⚫ Phase angle control when the input is turned off Off-mode ⚫ Phase ⚫ Immediately When On Phase is set to angle control and the angle is set to 270°, the waveform is shown below. Copyright ©ITECH Electronic Co., Ltd.
  • Page 104 Operating steps Press [Shift] + [F-set] (Sweep) on the front panel to enter the sweep interface, as shown in the figure below. Copyright ©ITECH Electronic Co., Ltd.
  • Page 105 Trig: Trigger mode Time-back-forth: Step switching according to time and scanning back and forth. Trigger-back-forth: Step switching according to trigger and scanning back and forth. Step time Set the step time. Repeat count Repeat count Copyright ©ITECH Electronic Co., Ltd.
  • Page 106 Connect the IO-4 pins of two IT7900P instruments. One unit inputs synchronization signals to the other unit. The second load runs synchronously with the frequency and phase of the first load to realize the six-phase input function.The wiring diagram is as follows: First Second Copyright ©ITECH Electronic Co., Ltd.
  • Page 107 List Function in Load Mode Each List file can be edited up to 200 steps, users can edit multiple steps according to actual needs, and each step can be individually selected from any base waveform. Then edit the frequency, amplitude, running time, rising slope and other parameters of each waveform. Copyright ©ITECH Electronic Co., Ltd.
  • Page 108 Run/Stop: Run/stop the list function. Open: Select the List file to execute. New: Create a new List file. Edit: Edit present list file Delete: delete the present List file. Press [New] and enter to the List file edit interface. Copyright ©ITECH Electronic Co., Ltd.
  • Page 109 Save: Save the list file. Config: configure the list file to make it effective. Clear all: delete all of step information Trig source: select trigger source Click (More)… enter to advanced menu of list file. Copyright ©ITECH Electronic Co., Ltd.
  • Page 110 Press [Shift]+[Set](list) on the front panel to enter the List function configuration interface. Press [Open], select the saved List01 csv file, and press [Enter] to enter the file. Press [On/Off] on the front panel, turn on the input. Copyright ©ITECH Electronic Co., Ltd.
  • Page 111 7.12.3 Import/Export List file Import List file IT7900P series support import list file function, The user can finish the editing of List file in Excel and import it into the software. This function simplifies the List file edit and facilitates user operation.
  • Page 112 Set the period of the surge/trap. For example, start angle=30 degree, Angle width=30 degree, then, the waveform will execute surge/sag at 30 to 60 degree. Symmetry Whether to produce symmetrical surge/sag waves. If Start angle + Angle width >180°,this setting is Off state. Copyright ©ITECH Electronic Co., Ltd.
  • Page 113 Sin wave voltage and test the usage of the DUT under this circumstance. THD includes built-in 30 waveforms and user - defined waveforms.The interface is shown below. Copyright ©ITECH Electronic Co., Ltd.
  • Page 114 Thd profile: THD file name Thd formula: Distortion factor calculation formula. %r: displaying harmonics in the form of percentage to the overall voltage amplitude of all harmonics. %f: displaying harmonics in the form of percentage to the fundamental voltage. Copyright ©ITECH Electronic Co., Ltd.
  • Page 115 “-” delete the wave file. “ ” edit the wave file. Edit interface: Profile: user-defined file name Origin Symmetry: To select the waveform data type, you can select 512 origin symm/512 origin asymm /1024 points Copyright ©ITECH Electronic Co., Ltd.
  • Page 116 Delete: select a row and click Delete. Clean: delete all of data Back: return back upper menu. 7.15 Protection Function IT7900P series load supports comprehensive protection. Press [Shift]+[Config] (Protect) and enter to Protect configure menu, where you can set the following protection. Protect auto clear(UV&FE...
  • Page 117 Press the up/down key or rotate the knob to select Over current protection (OCP) and press [Enter]. Set the protection state, Level, the delay time in sequence, and press [Enter] to confirm. Clear Protection When protection occurs, the instrument responds as follows: Copyright ©ITECH Electronic Co., Ltd.
  • Page 118 When protection occurs, the instrument responds as follows: ⚫ Instrument input is off; ⚫ The buzzer sounds; ⚫ The interface displays “OPP” indicator To clear the protection and return to normal operation, firstly remove the Copyright ©ITECH Electronic Co., Ltd.
  • Page 119 To clear the protection and return to normal operation, firstly remove the conditions that caused the protection fault. Press [Esc] key to clear the protection status. The message displayed in front panel is cleared and the instrument exits protection status. Copyright ©ITECH Electronic Co., Ltd.
  • Page 120 Set the Lock-frequency ON/OFF state Status ⚫ Off: turn off the function ⚫ Lock-Freq: Lock frequency ⚫ Lock-Phase: Lock phase Set the phase deviation between Phase Delay the output phase and the external I/O input signal: 0-360° Copyright ©ITECH Electronic Co., Ltd.
  • Page 121 Whether to turn on the filter during Filter measurement. Current Source Menu: System Device operation Select the operation mode to Current Source. mode Current Source Current Source Phase mode Set the power supply mode 1-Phase Single mode Reverse Spilt phase mode Copyright ©ITECH Electronic Co., Ltd.
  • Page 122 External analog function: programme Status Set the ON/OFF state AM: Adjust the amplitude Mode Amplifier: Real-time output and power Amplifier. Select the phase to monitor. Monitor phase This cannot be set in single phase mode. Copyright ©ITECH Electronic Co., Ltd.
  • Page 123 Loss phase setting (only for three phase mode) Load phase loss Loss phase setting (only for three A phase phase mode) Disable: not loss B phase Enable: B phase loss (only for Wye-connection.) C phase Disable: not loss Copyright ©ITECH Electronic Co., Ltd.
  • Page 124 Input off phase control Off-mode Phase: setting the phase Imm: immediately Set the measurement speed Measurement Lower Lower mode, measuring every 1000ms （1000ms） Slow mode, measuring every Slow（500ms） 500ms Medium Medium mode, measuring every 300ms （300ms） Copyright ©ITECH Electronic Co., Ltd.
  • Page 125 Language Set the language of display English English Chinese Chinese Set the soft keyboard Soft keyboard Turn on the soft keyboard. Turn off the soft keyboard. Set the USB type. Communication USB type Copyright ©ITECH Electronic Co., Ltd.
  • Page 126 IO Settings. If setting to ON, it means the valid signal is reversed. ⚫ PS Clear Function ⚫ Input ⚫ Output Digital IO-3: PS Function setting of pin 3 Reverse On/Off, Select Invert or not under the Copyright ©ITECH Electronic Co., Ltd.
  • Page 127 On/Off: When On is selected, the List generates a trigger signal and outputs a List trigger signal. (This configuration is displayed only when the IO pin is set to Trigger1-out) Digital IO-7: TRIG2 Function setting of pin 7 Reverse On/Off Copyright ©ITECH Electronic Co., Ltd.
  • Page 128 0. ⚫ Select to Open-Z, After the power output is Off, the power supply is in open mode, and the internal circuit and external load of the power supply are disconnected by relay. Copyright ©ITECH Electronic Co., Ltd.
  • Page 129 Off: disable the touch screen Set the Loop Speed This item can control stability of the loop. When the connected load is capacitive load or inductive load, select Slow; when the connected load is resistance, select High. Copyright ©ITECH Electronic Co., Ltd.
  • Page 130 Slew Rate: Slope , range from 0-5000V/ms DC+AC Configuration setting for DC+AC mode Config Output voltage of DC, range from 0-full Voltage DC scale Slew Rate: Slope , range from 0-5000V/ms Ripple control Wave: Select the output wave type Copyright ©ITECH Electronic Co., Ltd.
  • Page 131 Selece and edit the output wave type. For Waveform detailed introduction please refer to 5.6 waveform selection. Status: Dimming function switch. Dimming Edge: select front edge or back adge Phase: phase control, range from 0-180° Copyright ©ITECH Electronic Co., Ltd.
  • Page 132 Power Factor: PF setting Current Source Mode: Configuration setting for output. Config Output current. Iac: output current of AC, range from 0-full Current AC scale Slew Rate: Slope , range from 0.0001- 5000A/ms Copyright ©ITECH Electronic Co., Ltd.
  • Page 133 The front and back edge of the waveform can by concealed and the phase angle set with Dimmer function to regulate the active power, thus adjusting the lighting intensity. Select Front edge, and phase set to 90° in Configuration menu. Copyright ©ITECH Electronic Co., Ltd.
  • Page 134 CF value also affects the setting range of the PF value. ⚫ Phase shift: Voltage and current phase shift value, the range is -90°~90°, when set to a positive value the current waveform lags behind the voltage Copyright ©ITECH Electronic Co., Ltd.
  • Page 135 The range of CF setting is 1.414~5, and the range of Phase shift changes by CF setting. The relationship graph is show as below. CF & Phase shift relationship Copyright ©ITECH Electronic Co., Ltd.
  • Page 136 Press the composite keys [Shift]+[4] (Save) to enter the parameter save interface. Select the storage location. up to 10 position can be select. ( The screenshot in Source mode is used as an example. The display in Load mode is different) Copyright ©ITECH Electronic Co., Ltd.
  • Page 137 Press [Enter] to recall the parameters. 8.6 Screen Capture Function IT7900P series power supply has the screen capture function. Insert the USB equipment into the USB interface of the front panel, and press [Print] on the front panel to capture and save the current screen into the USB disk.
  • Page 138 System-Related Functions 8.8 Query the System Log The IT7900P series power supply provides the system operation Log query function. On the Menu interface of the front panel of the instrument, click Log or directly press Shift +1[Log] to enter the Log query interface. You can view historical system operation records on this screen.
  • Page 139 2. Ensure that the power switches of the three units and the main switch of the AC power distribution box are off. 3. Refer wiring connection diagram to connect three units. For long distance testing requirements: For short distance test requirements: Copyright ©ITECH Electronic Co., Ltd.
  • Page 140 Insert the plug of the fiber optic cable into the fiber optic module and hear a click sound to indicate that it is inserted in place. The fiber optic cable connection schematic is as follows. Copyright ©ITECH Electronic Co., Ltd.
  • Page 141 Set the Parallel Mode, set them to single. 2. Power off the three instruments and turn off the main switch of the AC distribution box. 3. Remove the cables connection of the System Bus and output terminals Copyright ©ITECH Electronic Co., Ltd.
  • Page 142 1. Ensure that the power switches of the instrument and the main switch of the AC power distribution box are off. Refer wiring connection diagram to connect two units. The configuration method is the same as 3U model instrument. Copyright ©ITECH Electronic Co., Ltd.
  • Page 143 When paralleling as a master role, several cabinets in parallel need ◼ to be powered on or powered down separately. ◼ When parallel as a slave role, the present slave cabinet up and Copyright ©ITECH Electronic Co., Ltd.
  • Page 144 The wiring method is shown in the figure below. 8.11 Remote Measurement Function The IT7900P series power supply supports two connection methods: Local measurement and Remote sensing. The remote sensing is used for maximizing measurement accuracy. (Refer to 2.4 Connecting Test Lines).
  • Page 145 The IO-1 ~ IO-7 pins are featured default function, the user can setting the function of pin according to requirement. The Input and Output are the general digital I/O function, and the parameter settings and functions of the Copyright ©ITECH Electronic Co., Ltd.
  • Page 146 IO-2 for clean protection operation, or when the power supply is in a protected state, the clean protection can generate a pulse signal from IO-2. Digital IO-3 IO-3 pin can be set to 【PS】, 【Input】, 【Output】 Copyright ©ITECH Electronic Co., Ltd.
  • Page 147 8.13 Analogue Function (Ext-Program) (Optional) The interface expansion slot provided on the rear panel of the IT7900P series. This function is not standard with the instrument and is optional for users. When the interface card selected by the user is RS232+Analog interface (IT- E177), the analog interface can realize the external analog function.
  • Page 148 The user needs to select the corresponding function settings in the System menu. The detailed parameter description is as below. External program External analog function Status Set the ON/OFF state ⚫ AM: Adjust the amplitude Mode ⚫ Amplifier: Monitor the real-time output values Copyright ©ITECH Electronic Co., Ltd.
  • Page 149 5V, the voltage ratio set to 50V/1 under source menu, the instrument output voltage is set to 5*50=250V. When parallel machine operation, can be controlled through the host analog interface. Copyright ©ITECH Electronic Co., Ltd.
  • Page 150 The -10V ~ 10V voltage reading corresponds to the power voltage and current output between negative full range and positive full scale (For AC, 0 to 10V corresponds to 0 to full scale). The wiring diagram is shown in the figure below. Copyright ©ITECH Electronic Co., Ltd.
  • Page 151 This chapter describes the characteristics and operations of the basic metering function of IT7900P series source. IT7900P series source has rich functions of basic metering of electric energy and can accurately measure the parameters such as Vrms, Irms, Ipeak, Idc, CF,...
  • Page 152 DC current 9.2 Oscilloscope Mode IT7900P series source has the function of displaying the waveform based on sampling data. The user can select to display or hide the voltage and current waveform of the input unit. Only the necessary waveform is displayed, which can facilitate observation.
  • Page 153 In the Normal mode, the displayed waveform will be updated in the case of triggering and not updated in the case of no triggering. ⚫ Trigger source Copyright ©ITECH Electronic Co., Ltd.
  • Page 154 10us ⚫ Both: Post and Raw, record two data file. 9.3 Harmonic measurement IT7900P series source can display harmonic parameters in the list or bar chart form to make the analysis of test result clear. 9.3.1 Harmonic Measurement Press key on the front panel, and the following initial interface of harmonic measurement will appear.
  • Page 155 Phase A, and displays 0 for the other two phases, as shown in the figure below; under three-phase mode, display effective values for the three phases. Copyright ©ITECH Electronic Co., Ltd.
  • Page 156 It is convenient for users to do harmonic test analysis. The set conditions can be THD value of voltage and current, THC, POHC, PWHC and IEC61000-3-2/IEC61000-3-12 regulation items. Copyright ©ITECH Electronic Co., Ltd.
  • Page 157 Max harmonic current Ih/Iref Class C Harmonic order h Max Permissible Ithd% Class D Harmonic order h Max Permissible Ithd per watt mA/W Max harmonic current Ih/Iref Note: Parameter items are displayed only and cannot be edited Copyright ©ITECH Electronic Co., Ltd.
  • Page 158 The data recording function allows you to observe and record output status data for a long time. On the recorder interface, you can select a maximum of six data curves to be displayed.See the figure below. Copyright ©ITECH Electronic Co., Ltd.
  • Page 159 Hold-On/Hold-Off: Pause screen data refresh (for data observation)/ Start dynamically observing the data Auto: Automatically adjusts the scale of the appropriate vertical axis. Time: The time value of each of the horizontal coordinates, unit is s/Div Vernier: Position information of the vernier caliper. Copyright ©ITECH Electronic Co., Ltd.
  • Page 160 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz ＜0.3%+(0.6%*kHz) F.S. 500.01Hz～2.4kHz Temperature ＜200ppm/℃ F.S. coefficient Frequency 16～500 Range High 16～2.4k Resolution 0.01 16Hz～500Hz 0.01% Accuracy 500.01Hz～2.4kHz 0.1% waveform synthesis 50/60Hz up to 50 orders Phase Range 0～360 ° Resolution 0.01 ° Copyright ©ITECH Electronic Co., Ltd.
  • Page 161 150.01Hz～500Hz Temperature ＜200ppm/℃ F.S. coefficient CP Mode Max. Power Range （1phase） Resolution 0.001 ＜0.4% +0.4% F.S. Accuracy DC,16Hz～500Hz Temperature ＜200ppm/℃ F.S. coefficient CS Mode Max. Power Range （1phase） Resolution 0.001 ＜0.4% +0.4% F.S. Accuracy 16Hz～500Hz Copyright ©ITECH Electronic Co., Ltd.
  • Page 162 ＜0.4% + 0.6% F.S. 16Hz～500Hz Accuracy ＜0.4% + (1.2%*kHz) F.S. 500.01Hz～2.4kHz Resolution 0.001 Output power ＜0.4% +0.4% F.S. DC,16Hz～500Hz Accuracy ＜0.4% +(0.8%*kHz) F.S. 500.01Hz～2.4kHz Harmonic 50/60Hz orders Max. up to 50 measurement Measurement parameter（Load mode） Copyright ©ITECH Electronic Co., Ltd.
  • Page 163 When loopSpeed Low is low，it can better complied DUT’s characteristics； When LoopSpeed is High，the dynamic response time is faster. Test condition: Pure resistive load, full power condition. The dynamic response time test condition is: DC high-speed mode, and the capacitance of the DUT to be less Copyright ©ITECH Electronic Co., Ltd.
  • Page 164 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380VLL/50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH. IT7906P-350-90 Input parameters（AC Input）...
  • Page 165 3phase 0.001～5 C Range 1phase 0.003～15 reverse 0.001～2.5 Voltage Slew Rate, Typical ≥2 V/µs with full-scale programmed voltage step 550Vac Output Isolation Output parameters（Load mode） 30～350 Input voltage 51.96～606 （3phase） 30～700 （reverse） Input frequency 16～500 Copyright ©ITECH Electronic Co., Ltd.
  • Page 166 1phase C Range 0.001～3300 reverse phase 0.001～3300 3phase 0.334～388.88 1phase Ω Rc Range 1.002～1166.6 reverse phase 1.002～1166.6 3phase 0.334～388.88 1phase Ω RL Range 1.002～1166.6 reverse phase 1.002～1166.6 3phase 0～272.7 1phase IL Range 0～90.9 reverse phase Copyright ©ITECH Electronic Co., Ltd.
  • Page 167 ＜0.4% + 0.6% F.S. 16Hz～500Hz Accuracy ＜0.4% + (1.2%*kHz) F.S. 500.01Hz～2.4kHz 0.001 Resolution Output power ＜0.4% +0.4% F.S. DC,16Hz～500Hz Accuracy ＜0.4% +(0.8%*kHz) F.S. 500.01Hz～2.4kHz Harmonic Max. 50/60Hz up to 50 orders measurement Measurement parameter（Load mode） Vrms 0～350 Range Copyright ©ITECH Electronic Co., Ltd.
  • Page 168 Under the output frequency of 50Hz/60Hz, the maximum CF is 6 without exceeding the peak current; under the condition of full current and full power, the maximum CF is 3. When frequency <150Hz, the minimum current for test need to be 1%F.S. frequency >150Hz, the minimum Copyright ©ITECH Electronic Co., Ltd.
  • Page 169 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380VLL/50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH. Copyright ©ITECH Electronic Co., Ltd.
  • Page 170 Model IT7908P-350-90 High Performance Programmable AC Power Supply Input parameters 3 phase 3wire + ground(PE) Wiring connection 8.1kW MAX. @( 200～220 )±10% Input Line voltage 8.1kW MAX. @( 380～480 )±10% Input ＜28.7A(per phase)@200Vac,3∅input Line current ＜15.3A(per phase)@380Vac,3∅input AC Input ＜12.2A(per phase)@480Vac,3∅input Apparent power ＜10 Frequency...
  • Page 171 Max. power Channel power Per Channel 2.7k Max. power Max. Power 5.4k (reverse phase) （reverse phase ) Max. Power Total power 8.1k （1phase/multichannel ） ＜0.05% F.S. Line regulation DC,16Hz～500Hz ＜0.05% + 0.05% F.S. Load regulation 500.01Hz～2.4kHz ＜0.05% + (0.1%*kHz) F.S. 16Hz～100Hz ＜0.5% Voltage stability...
  • Page 172 CR Mode 0.334～388.88 Ω 1phase Range 1.002～1166.6 Ω reverse phase 3phase 1.002～1166.6 Ω Resolution 0.001 Ω ＜0.4%+0.4%F.S. Accuracy AC Mode Circuit Emulation(CE)-Parallel rlc 1phase 0.334～388.88 R Range reverse phase 1.002～1166.6 Ω 3phase 1.002～1166.6 1～2000 1phase L Range reverse phase 3～2000 3～2000 3phase 1phase...
  • Page 173 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. All the above parameters are subject to change without prior notice from ITECH.
  • Page 174 Model IT7909P-350-90 High Performance Programmable AC Power Supply Input parameters（AC Input） Wiring connection 3 phase 3wire + ground(PE) ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜33 AC Input Apparent power ＜11.1 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 175 Current setting multichannel/reverse -30～30 Range 1phase -90～90 DC Output Resolution 0.01 ＜0.1% + 0.2% F.S. Accuracy Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 176 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution 0.01 DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 150.01Hz～500Hz ＜0.2% + 0.3% F.S. Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power （1phase/3phase）...
  • Page 177 Emulation(CE)-Rectifier single phase rlc 1phase 0.334～388.88 R Range Ω reverse phase 1.002～1166.6 3phase 1.002～1166.6 0.1～2000 1phase L Range reverse phase 0.3～2000 3phase 0.3～2000 1phase 0.001～9900 C Range reverse phase 0.001～3300 0.001～3300 3phase 1phase 0～388.88 Range Ω reverse phase 0～1166.6 3phase 0～1166.6 0～499.924 1phase...
  • Page 178 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 179 Model IT7912P-350-90 High Performance Programmable AC Power Supply Input parameters（AC Input） Wiring connection 3 phase 3wire + ground(PE) ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜29 AC Input Apparent power ＜14.8 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 180 Current setting multichannel/reverse -30～30 Range 1phase -90～90 DC Output Resolution 0.01 ＜0.1% + 0.2% F.S. Accuracy Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 181 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution 0.01 DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 150.01Hz～500Hz ＜0.2% + 0.3% F.S. Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power （1phase/3phase）...
  • Page 182 Emulation(CE)-Rectifier single phase rlc 1phase 0.334～388.88 R Range Ω reverse phase 1.002～1166.6 3phase 1.002～1166.6 0.1～2000 1phase L Range reverse phase 0.3～2000 3phase 0.3～2000 1phase 0.001～9900 C Range reverse phase 0.001～3300 0.001～3300 3phase 1phase 0～388.88 Range Ω reverse phase 0～1166.6 3phase 0～1166.6 0～499.924 1phase...
  • Page 183 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 184 Model IT7915P-350-90 High Performance Programmable AC Power Supply Input parameters（AC Input） Wiring connection 3 phase 3wire + ground(PE) ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜34 AC Input Apparent power ＜17.4 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 185 Current setting multichannel/reverse -30～30 Range 1phase -90～90 DC Output Resolution 0.01 ＜0.1% + 0.2% F.S. Accuracy Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 186 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution 0.01 DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 150.01Hz～500Hz ＜0.2% + 0.3% F.S. Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power （1phase/3phase）...
  • Page 187 Emulation(CE)-Rectifier single phase rlc 1phase 0.334～388.88 R Range Ω reverse phase 1.002～1166.6 3phase 1.002～1166.6 0.1～2000 1phase L Range reverse phase 0.3～2000 3phase 0.3～2000 1phase 0.001～9900 C Range reverse phase 0.001～3300 0.001～3300 3phase 1phase 0～388.88 Range Ω reverse phase 0～1166.6 3phase 0～1166.6 0～499.924 1phase...
  • Page 188 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 189 Model IT7930P-350-180 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜67 AC Input Apparent power ＜34.8 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 190 Current setting -60～60 multichannel/reverse Range 1phase -180～180 DC Output Resolution 0.01 Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 191 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution 0.01 DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power （1phase/3phase）...
  • Page 192 Emulation(CE)-Rectifier single phase rlc 0.167～194.44 1phase R Range Ω reverse phase 0.501～583.32 3phase 0.501～583.32 1phase 0.05～2000 L Range reverse phase 0.15～2000 3phase 0.15～2000 1phase 0.001～19800 C Range reverse phase 0.001～6600 3phase 0.001～6600 1phase 0～194.44 Range Ω reverse phase 0～583.32 3phase 0～583.32 1phase 0～499.924...
  • Page 193 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 194 Model IT7945P-350-270 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜100 AC Input Apparent power ＜52.2 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 195 Current setting -90～90 multichannel/reverse Range 1phase -270～270 DC Output Resolution 0.01 Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 196 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution 0.01 DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power （1phase/3phase）...
  • Page 197 Emulation(CE)-Rectifier single phase rlc 0.112～129.62 1phase R Range Ω reverse phase 0.336～388.86 3phase 0.336～388.86 1phase 0.03～2000 L Range reverse phase 0.1～2000 3phase 0.1～2000 1phase 0.001～29700 C Range reverse phase 0.001～9900 3phase 0.001～9900 1phase 0～129.62 Range Ω reverse phase 0～388.86 3phase 0～388.86 1phase 0～499.924...
  • Page 198 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 199 Model IT7960P-350-360 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜133 AC Input Apparent power ＜69.6 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 200 Current setting -120～120 multichannel/reverse Range 1phase -360～360 DC Output Resolution Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 201 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power （1phase/3phase）...
  • Page 202 Emulation(CE)-Rectifier single phase rlc 0.084～97.222 1phase R Range Ω reverse phase 0.252～291.66 3phase 0.252～291.66 1phase 0.02～2000 L Range reverse phase 0.07～2000 3phase 0.07～2000 1phase 0.001～39600 C Range reverse phase 0.001～13200 3phase 0.001～13200 1phase 0～97.222 Range Ω reverse phase 0～291.66 3phase 0～291.66 1phase 0～499.924...
  • Page 203 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 204 Model IT7975P-350-450 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜167 AC Input Apparent power ＜87 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 205 Current setting -150～150 multichannel/reverse Range 1phase -450～450 DC Output Resolution Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 206 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power （1phase/3phase）...
  • Page 207 Emulation(CE)-Rectifier single phase rlc 0.067～77.777 1phase R Range Ω reverse phase 0.201～233.33 3phase 0.201～233.33 1phase 0.02～2000 L Range reverse phase 0.06～2000 3phase 0.06～2000 1phase 0.001～49500 C Range reverse phase 0.001～16500 3phase 0.001～16500 1phase 0～77.777 Range Ω reverse phase 0～233.33 3phase 0～233.33 1phase 0～499.924...
  • Page 208 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 209 Model IT7990P-350-540 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜200 AC Input Apparent power ＜104.4 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 210 Current setting -180～180 multichannel/reverse Range 1phase -540～540 DC Output Resolution Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 211 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power （1phase/3phase）...
  • Page 212 Emulation(CE)-Rectifier single phase rlc 0.056～64.814 1phase R Range Ω reverse phase 0.168～194.44 3phase 0.168～194.44 1phase 0.01～2000 L Range reverse phase 0.05～2000 3phase 0.05～2000 1phase 0.001～59400 C Range reverse phase 0.001～19800 3phase 0.001～19800 1phase 0～64.814 Range Ω reverse phase 0～194.44 3phase 0～194.44 1phase 0～499.924...
  • Page 213 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 214 Model IT79105P-350-630 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜233 AC Input Apparent power ＜121.8 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 215 Current setting -210～210 multichannel/reverse Range 1phase -630～630 DC Output Resolution Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power 105k （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 216 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power 105k （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power 105k （1phase/3phase）...
  • Page 217 Emulation(CE)-Rectifier single phase rlc 0.048～55.555 1phase R Range Ω reverse phase 0.144～166.66 3phase 0.144～166.66 1phase 0.01～2000 L Range reverse phase 0.04～2000 3phase 0.04～2000 1phase 0.001～69300 C Range reverse phase 0.001～23100 3phase 0.001～23100 1phase 0～55.555 Range Ω reverse phase 0～166.66 3phase 0～166.66 1phase 0～499.924...
  • Page 218 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 219 Model IT79120P-350-720 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜266 AC Input Apparent power ＜139.1 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 220 Current setting -240～240 multichannel/reverse Range 1phase -720～720 DC Output Resolution Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power 120k （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 221 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power 120k （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power 120k （1phase/3phase）...
  • Page 222 Emulation(CE)-Rectifier single phase rlc 0.042～48.611 1phase R Range Ω reverse phase 0.126～145.83 3phase 0.126～145.83 1phase 0.01～2000 L Range reverse phase 0.03～2000 3phase 0.03～2000 1phase 0.001～79200 C Range reverse phase 0.001～26400 3phase 0.001～26400 1phase 0～48.611 Range Ω reverse phase 0～145.83 3phase 0～145.83 1phase 0～499.924...
  • Page 223 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 224 Model IT79135P-350-810 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜299 AC Input Apparent power ＜156.5 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 225 Current setting -270～270 multichannel/reverse Range 1phase -810～810 DC Output Resolution Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power (reverse phase) （reverse phase ) Max. Power Total power 135k （1phase/multichannel ） Line regulation ＜0.05% F.S.
  • Page 226 Per Phase (3phase ) Input power Max. Power （reverse phase ) Max. Power 135k （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max. Power 135k （1phase/3phase）...
  • Page 227 Emulation(CE)-Rectifier single phase rlc 0.038～43.209 1phase R Range Ω reverse phase 0.114～129.62 3phase 0.114～129.62 1phase 0.01～2000 L Range reverse phase 0.03～2000 3phase 0.03～2000 1phase 0.001～89100 C Range reverse phase 0.001～29700 3phase 0.001～29700 1phase 0～43.209 Range Ω reverse phase 0～129.62 3phase 0～129.62 1phase 0～499.924...
  • Page 228 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 229 Model IT79150P-350-900 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜333 AC Input Apparent power ＜173.9 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 230 Current setting -300～300 multichannel/reverse Range 1phase -900～900 DC Output Resolution Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power 100k (reverse phase) （reverse phase ) Max. Power Total power 150k （1phase/multichannel ）...
  • Page 231 Per Phase (3phase ) Input power Max. Power 100k （reverse phase ) Max. Power 150k （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max.
  • Page 232 Emulation(CE)-Rectifier single phase rlc 0.034～38.888 1phase R Range Ω reverse phase 0.102～116.66 3phase 0.102～116.66 1phase 0.01～2000 L Range reverse phase 0.03～2000 3phase 0.03～2000 1phase 0.001～99000 C Range reverse phase 0.001～33000 3phase 0.001～33000 1phase 0～38.888 Range Ω reverse phase 0～116.66 3phase 0～116.66 1phase 0～499.924...
  • Page 233 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 234 Model IT79165P-350-990 High Performance Programmable AC Power Supply Input parameters（AC Input） 3 phase 3wire + ground(PE) Wiring connection ( 200～220 ) ±10% Line voltage ( 380～480 ) ±10% Line current ＜366 AC Input Apparent power ＜191.3 Frequency 45～65 Power factor 0.98 Output parameters（Voltage Source mode）...
  • Page 235 Current setting -330～330 multichannel/reverse Range 1phase -990～990 DC Output Resolution Accuracy ＜0.1% + 0.2% F.S. Temperature ＜200ppm/℃ F.S. coefficient Max. power Channel power Per Channel Max. power Max. Power 110k (reverse phase) （reverse phase ) Max. Power Total power 165k （1phase/multichannel ）...
  • Page 236 Per Phase (3phase ) Input power Max. Power 110k （reverse phase ) Max. Power 165k （1phase/3phase） CC Mode （1phase） Current Range (3phase/reverse) Resolution DC,16Hz～150Hz ＜0.1% + 0.2% F.S. Accuracy*9 ＜0.2% + 0.3% F.S. 150.01Hz～500Hz Temperature coefficient ＜200ppm/℃ F.S. CP Mode Max.
  • Page 237 Emulation(CE)-Rectifier single phase rlc 0.031～35.353 1phase R Range Ω reverse phase 0.093～106.05 3phase 0.093～106.05 1phase 0～2000 L Range reverse phase 0.02～2000 3phase 0.02～2000 1phase 0.001～108900 C Range reverse phase 0.001～36300 3phase 0.001～36300 1phase 0～35.353 Range Ω reverse phase 0～106.05 3phase 0～106.05 1phase 0～499.924...
  • Page 238 In the rectifier load mode, the setting range of phase Angle is related to CF. The larger CF is, the larger the range of phase Angle can be set. 1% F.S. for frequencies 150 Hz and less, 5% F.S. for frequencies greater than 150 Hz. Test conditions: 380V /50Hz AC input, 350Vrms/50Hz/full power output. All the above parameters are subject to change without prior notice from ITECH.
  • Page 239 4. Select the USB device class to TMC or VCP. 11.2 LAN Interface When the user connect PC through LAN interface, the following is required to use the LAN interface. The LAN interface complies with the LXI standard. Copyright ©ITECH Electronic Co., Ltd.
  • Page 240 Gateway: This value is the IP Address of the default gateway that allows the ⚫ instrument to communicate with systems that are not on the local subnet, as determined by the subnet mask setting. The same numbering notation ap- plies as for the IP Address. Copyright ©ITECH Electronic Co., Ltd.
  • Page 241 Information: Displays the serial number of the instrument and more system ⚫ information as well as LAN configuration parameters; ⚫ Web Control: Enables the Web control to begin controlling the instrument. This page allows you to monitor and control the instrument; Copyright ©ITECH Electronic Co., Ltd.
  • Page 242 Inspection and Installation ⚫ LAN Configuration: Reconfigure the LAN parameters; ⚫ Manual: Go to the ITECH official website and view or download the relevant documents. Upload: Performs a system upgrade. ⚫ Click CONNECT to connect the PC with the instrument, then click Select File to select the system upgrade installation package (for example, IT7900P-U-VXXX.itech), and then click UPLOAD performs the upgrade...
  • Page 243 GPIB address appears in the System menu. The specific steps are as follows: 1. Ensure that the instrument's power switch is off, that is, the instrument is Copyright ©ITECH Electronic Co., Ltd.
  • Page 244 When you purchase the interface accessory and successfully insert it into the corresponding position on the rear panel of the instrument, the RS–232 menu item will appear in the System menu. The specific steps are as follows: Copyright ©ITECH Electronic Co., Ltd.
  • Page 245 SYSTem:FUNCtion ONE //Set the output mode to AC mode FUNCtion AC //Set the voltage RMS to 220V VOLTage 220 //Set the frequency to 60Hz FREQuency 60.0 //Set the current RMS protect value to CURRent:PROTection:RMS 90 Copyright ©ITECH Electronic Co., Ltd.
  • Page 246 PV7900P Demo Software(Standard) IT7900 series power supply supporting remote control software, users can directly obtain the software from ITECH agent and install to the PC, to achieve remote control equipment by visualization method, IT9000-PV7900 software can achieve all the instrument panel operation. And the interface is simple and convenient to operate.
  • Page 247 Appendix Specifications of Red and Black Test Lines ITECH provides you with optional red and black test lines, the user can choose the company's test line for testing. For specifications of ITECH test lines and maximum current values, refer to the table below.

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