ITech IT7800 Series User Manual
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ITech IT7800 Series User Manual

Programmable ac power supply
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Programmable AC Power
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IT7800 Series User Manual
Model: IT7800
Version: V1.0/2021.10

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Summary of Contents for ITech IT7800 Series

  • Page 1 Programmable AC Power Supply IT7800 Series User Manual Model: IT7800 Version: V1.0/2021.10...
  • Page 2 Notices Warranty Safety Notices © Itech Electronic, Co., Ltd. 2022 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

    IT7800 User Manual Quality Certification and Assurance We certify that IT7800 series power supply meets all the published specifications at time of shipment from the factory. 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: Environmental Conditions

    ( if any) affixed refers to the year when the design was approved. The instrument complies with the WEEE Directive 2002/96/EC) marking requirement. This affix product label indicates that you must not discard the electrical/electronic product in domestic household waste. Copyright ©ITECH Electronic Co., Ltd.

  • Page 6: Waste Electrical And Electronic Equipment ( Weee) Directive

    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: Compliance Information

    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: Table Of Contents

    4.10.3 Connecting Digital I/O Method ......................... 48 4.11 Standard IEC Regulations ..........................50 Chapter5 System-Related Functions ......................53 5.1 System Menu Reference ............................ 53 5.1.1 Menu function ............................. 58 5.1.2 Set the communication interface ........................ 59 Copyright ©ITECH Electronic Co., Ltd.
  • Page 9 9.4 GPIB Interface (Optional) ..........................111 9.5 RS-232 Interface (Optional) ..........................112 9.6 Commonly Used Commands Overview ......................113 9.7 Demo Software Introduction ........................... 114 Appendix ................................115 Specifications of Red and Black Test Lines ......................115 Copyright ©ITECH Electronic Co., Ltd.

  • Page 10: Chapter1 Quick Reference

    Chapter1 Quick Reference This chapter introduces the front panel, the rear panel, key functions and LCD display function of the IT7800 series power supply, make sure that you can quickly know the appearance, instruction and the key function before you operate the power supply.

  • Page 11: Front Panel Introduction

    Take IT7815-350-90 for an example, the rated power is 15kVA, rated voltage is 350V and rated current is 90A. 1.2 Front Panel Introduction The front panel of IT7800 is as shown below. Copyright ©ITECH Electronic Co., Ltd.

  • Page 12: Keyboard Introduction

    5 Number key 6 Up, down, left and right key and enter key 7 Rotary knob 8 Vent hole 1.3 Keyboard Introduction The keyboard introduction of IT7800 series Power Supply is shown as follows. Keys Description Print Used for saving screen images...
  • Page 13 When you need to keep the present meter status, you can press the keys. Then the present meter status display and will be kept no matter whether output is running. [Shift]+ [7] (Help) Obtain the help information. Copyright ©ITECH Electronic Co., Ltd.

  • Page 14: Push-On Knob

    Quick Reference 1.4 Push-on Knob The IT7800 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. ⚫ Adjust the value setting Select menu item ⚫...
  • Page 15 USB interface USB communication interface. system bus Used for communication between instruments in parallel operation feature. AC power input Used to connect AC power to start instrument. socket Copyright ©ITECH Electronic Co., Ltd.

  • Page 16: Home-Screen Overview

    Quick Reference The rear panel of IT7800 series 15U and above series cabinets are the same. Take IT7845-350-270 as an example, the rear panel is introduced as shown below. 1: 10A output socket, which can be used when users need single-phase...
  • Page 17 Quick Reference Single Phase Mode The meter interface of IT7800 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 IT7800 three phase mode is shown as follow.
  • Page 18 The AC source is in Surge&Sag function remote mode indicator 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 19: Optional Accessories

    The IT7800 series supports the following optional accessories (sold separately), the details are shown as below: The interface expansion slot provided on the rear panel of the IT7800 series instrument allows users to flexibly expand according to their needs. Different interface cards can be selected to achieve different functions.
  • Page 20 2.5m fiber cable. The fiber optic module and cable are the necessary accessories for the parallel connection. Different numbers of fiber optic modules and cables are used in different numbers of parallels. Copyright ©ITECH Electronic Co., Ltd.

  • Page 21: Chapter2 Inspection And Installation

    ⚫ 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 22: Verifying The Shipment

    ⚫ 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 23: Instrument Size Introduction

    For details, see 2.6 chapter. 2.3 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. IT7803-350-30U/IT7805-350-30U/IT7806-350-90/IT7809-350-90/IT7812-350-90/IT7815-350- 90 Model Copyright ©ITECH Electronic Co., Ltd.
  • Page 24 Inspection and Installation IT7830-350-180 Model Copyright ©ITECH Electronic Co., Ltd.
  • Page 25 Inspection and Installation IT7845-350-270 Model Copyright ©ITECH Electronic Co., Ltd.
  • Page 26 Inspection and Installation IT7860-350-360/IT7875-350-450/IT7890-350-540/IT78105-350-630 Model Copyright ©ITECH Electronic Co., Ltd.

  • Page 27: Connecting The Power Cord

    To prevent electric shock and damage to the instrument, observe the following precautions. ⚫ Before connecting power cord, be sure to confirm that the power voltage matches with the rated input voltage of the instrument. Copyright ©ITECH Electronic Co., Ltd.
  • Page 28 L1, L2 and L3 terminals of power input on the rear panel. NOTE IT7930-350-180 is standard equipped with two power cords. Copyright ©ITECH Electronic Co., Ltd.
  • Page 29 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: Multiple power supplies connect to three phase input: Copyright ©ITECH Electronic Co., Ltd.

  • Page 30: Connecting Test Lines ( Optional)

    ⚫ To avoid electrical shock, before testing, please make sure the rating values of the testing lines, and do not measure the current that higher than the rating value. All test lines shall be capable of 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 single phase is shown as follow: NOTE When the output voltage has DC voltage, the output terminal L is positive, and N is negative. Copyright ©ITECH Electronic Co., Ltd.
  • Page 33 The connection diagram and steps of remote measurement are as follows: NOTE The T7830-350-180 consists of two 15kVA in parallel mode. Connect the Remote sense terminals of master module. The wiring method is the same as other models. Copyright ©ITECH Electronic Co., Ltd.
  • Page 34 When serving as an inverting power supply output, the N wire of Sense terminal needs to be connected to the N terminal of the output terminal， The connection diagram of split phase is shown as follow: Copyright ©ITECH Electronic Co., Ltd.

  • Page 35: Installing Fiber Cables (Only For It7830-350-180)

    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: Chapter3 Getting Started

    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: Touch Screen Introduction

    Getting Started Power Switch Introduction The POWER switch knob of the IT7800 series power supply is on the left side of the front panel. The user can turn ON the power by 90° clockwise. Turning the POWER Switch On Check that the power cord is connected properly.

  • Page 39: Output On/Off Control

    The VFD displays the meter value such as voltage, current, power and so on. If the [On/Off] key light is off, indicates that the output is turned off. The VFD displays that the power supply state is OFF. Copyright ©ITECH Electronic Co., Ltd.

  • Page 40: Chapter4 Operation And Application

    Under the Multi-channel phase, the power supply works as a single phase power supply and have three channels. The multi-channel function of the IT7800 series allows users to test 3 independent DUTs at the same time without adding additional hardware configuration.

  • Page 41: Select The Output Mode

    Operation and Application 4.2 Select the Output Mode The IT7800 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 42: Ac+Dc Mode

    DC: set the DC component under the config interface. The setting range is 10% of rated voltage. DC value can not be set in three-phase balance mode. To set the three-phase DC component, turn off the balance mode. NOTE Copyright ©ITECH Electronic Co., Ltd.

  • Page 43: Dc+Ac Mode

    4.3 Waveform Selection In AC mode or AC+DC mode, the user can set the output waveform in the config menu of IT7800 series power supply. Eight output waveforms below are available, user can select the waveform in Config->Waveform menu. Copyright ©ITECH Electronic Co., Ltd.

  • Page 44: Auto-Range Function

    4.4 Auto-range Function IT7800 series power supply can achieve the combined output of multiple voltage and current at a fixed power. Single power supply can meet different DUT tests with high voltage low current or high current low voltage, at the same time, because the output of voltage and current is controlled by the limit power, it will show the switching of voltage and current auto ranging.

  • Page 45: Output Characteristic

    30V or more is required for 100% current output. 4.6 Current Limit Mode and Power Limit Mode The IT7800 series power supply defaults to constant voltage CV output mode. The output voltage can be set in main interface.
  • Page 46 Set the step frequency. Step time Set the step time. Mode Set the sweep mode. Time: Time Sweep Mode Trig: Trigger mode Priority Priority setup Volt-Priority Freq-priority Volt&Freq Waveform Select sweep waveform Sine Square Sawtooth Triangle Trapezoid Copyright ©ITECH Electronic Co., Ltd.

  • Page 47: Power Amplifier

    Sweep function. 4.8 Power Amplifier The IT7800 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 48: Polyphase Function

    Operation and Application 4.10 Polyphase Function The IT7800 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 49 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 50: Connecting Digital I/O Method

    Press [Shift] + (System) and enter to the system menu interface. Select I/O -> Digital IO-4: SYNC. Set one IT7900 power supply as a synchronization signal output to Sync- out, and the others set to Sync-out. Copyright ©ITECH Electronic Co., Ltd.
  • Page 51 Fiber: The slave is controlled by the master fiber. If in balance mode, the Phase Delay between the first instrument and the second intrument is set to 60° to achieve six-phase balanced output of 60° between six phases. Copyright ©ITECH Electronic Co., Ltd.

  • Page 52: Standard Iec Regulations

    Operation and Application 4.11 Standard IEC Regulations IT7800 series AC/DC power supplies provide standard test curves in accordance with IEC 61000-4-11/4-13/4-14/4-28 regulations. It can be invoked directly by the user when testing IEC compliance tests. This function provides both the test curve that meets the standard requirements of regulations and the curve customization function.
  • Page 53 The interval time of test, from the beginning of the drop to the recovery of normal operation. Unit: second (s) Repeat Repeat number. counts Delay Time delay, the time interval between test items. Unit: second Copyright ©ITECH Electronic Co., Ltd.
  • Page 54 Click More to enter the configuration interface of other parameters, and set the Rise time and Fall time. ⚫ Run/Stop running or stopping the regulation tests. You must enable the output before running. Otherwise, a message is displayed indicating that the output is not enabled. Copyright ©ITECH Electronic Co., Ltd.

  • Page 55: Chapter5 System-Related Functions

    I/O input signal, range: 0-360° Set the upper limit of output Freq limit+ frequency. Set the lower limit of output Freq limit- frequency. Set the output mode when the Exception frequency lock fails: ⚫ Output Disable: stop output Copyright ©ITECH Electronic Co., Ltd.
  • Page 56 [On/Off] state. When the instrument is powered on, the instrument will remain Last the same settings and [On/Off] state as last time you turned off the instrument. Last-OFF When the instrument is powered Copyright ©ITECH Electronic Co., Ltd.
  • Page 57 Set the instrument address to a number Select RS-232 communication interface. When insert RS232 config IT-E177 communication board into expansion slot, the menu displays this information. Baud rate Baud rate Databits Data bit: 5/6/7/8 Stopbits Stop bit: 1/2 Copyright ©ITECH Electronic Co., Ltd.
  • Page 58 Output Digital IO-6: Function setting of pin 6 Trigger1 On/Off, Select Invert or not under Reverse the IO Settings. If setting to ON, it means the valid signal is reversed. ⚫ Trigger1-out Function ⚫ Trigger1-in Copyright ©ITECH Electronic Co., Ltd.
  • Page 59 DC amplitude changes, and the voltage change precision is 100mV. (This configuration is displayed only when the IO function is set to Trigger2-out) On/Off: When On is selected, a Freq trigger signal is output when the frequency changes.The accuracy Copyright ©ITECH Electronic Co., Ltd.

  • Page 60: Menu Function

    Select the General under system menu. Press Enter in Factory_default_settings. After the parameter settings are complete and return to main interface. Set the Power-on State This parameter determines the state of the AC source after power up. Copyright ©ITECH Electronic Co., Ltd.

  • Page 61: Set The Communication Interface

    5.1.2 Set the communication interface This menu item is used to set the communication information between instrument and PC. The standard communication interfaces for IT7800 series power supply are USB, LAN and CAN. You can also select the non-standard interface GPIB or RS-232 based on personal requirement.

  • Page 62: View The System Information

    Vac: output voltage of AC, range from 0- Ripple control 10% of full scale Freq: frequency value Configuration setting for AC mode Config Only displayed in 3-phase mode. Balance control Balance control in 3-phase mode. Copyright ©ITECH Electronic Co., Ltd.
  • Page 63 Angle between phases is fixed at 120°, which cannot be set. You can set the Balance Control to Off and disable the Balance control function Copyright ©ITECH Electronic Co., Ltd.

  • Page 64: Key Lock Function

    Select Back edge, and phase set to 90° in Configuration menu. 5.3 Key Lock Function Press [Shift] + [2] (Lock) button to set the key lock state. If keyboard has been locked, the indicator light ”Lock” will display on the LCD. In addition, when the Copyright ©ITECH Electronic Co., Ltd.

  • Page 65: Switching Local/Remote Mode

    Press the composite keys [Shift]+[4] (Save) to enter the parameter save interface. Select the storage location. up to 10 position can be select. Press [Enter] to save the parameters. Finished, the saved parameters will be display at the bottom of the interface. Copyright ©ITECH Electronic Co., Ltd.

  • Page 66: Protection Function

    Press [Enter] to recall the parameters. 5.6 Protection Function IT7800 series source includes the following protection functions: overcurrent protection (Current RMS protection, Current peak protection), voltage limit protection and over-temperature protection (OTP).

  • Page 67: Current Rms Protection

    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 68: Set Voltage/Current/Power Limit Range

    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 “PROTect:CLEar”) to clear on the front panel and exit the OPP mode. Copyright ©ITECH Electronic Co., Ltd.

  • Page 69: Screen Capture Function

    System-Related Functions 5.7 Screen Capture Function IT7800 series power supply has the screen capture function. Insert the USB disk 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 70 6. Refer to the blue wiring legend in the figure, connect the System Bus (i.e., the fiber outer ring interfaces TX and RX) for fiber-optic communication between the master and slaves. a) Insert the fiber optic module into the hole corresponding to TX RX. Copyright ©ITECH Electronic Co., Ltd.
  • Page 71 Single: Default value, indicates that the instrument is in single mode. ⚫ ⚫ Master: Indicates that the single unit is set to master in parallel mode. Numbers: total number of units in the parallel relationship, when the Copyright ©ITECH Electronic Co., Ltd.

  • Page 72: Remote Measurement Function

    After the instrument is restarted, the screen shows that the instrument is working in single mode. 5.12 Remote Measurement Function The IT7800 series power supply supports two connection methods: Local measurement and Remote sensing. The remote sensing is used for maximizing measurement accuracy. (Refer to 2.5 Connecting Test Lines).
  • Page 73 IT7800, and the pulse signal is the edge signal switched between high and low levels. Typical: 5V High level signal Range: 1.6V-15V Current: ≤100mA Input signal Low level signal Typical: 0V Range: -5V-0.8V Current: ≤100mA Copyright ©ITECH Electronic Co., Ltd.
  • Page 74 The ON/OFF button will be lighted off, the status bar of the LCD screen displays INH warning icon. In this case, user need to remove the input signal and press [Shift]+[Esc] to clear protection, then manually turn on [On/Off] again. Copyright ©ITECH Electronic Co., Ltd.
  • Page 75 Users can select as the trigger source of the corresponding function in the menu. 【Trigger1-out】: The output trigger signal, when the instrument generates a trigger signal, the pin6 generates an pulse signal. Copyright ©ITECH Electronic Co., Ltd.

  • Page 76: Analogue Function (Ext-Program) (Optional)

    5.14 Analogue Function (Ext-Program) (Optional) The interface expansion slot provided on the rear panel of the IT7800 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 77 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 78 For example, Monitoring AC range of 0~350V voltage, when themonitoring voltage is 5V, the voltage ratio set to 50V/1 under source menu, the input voltage is 5*50=250V. The wiring diagram is shown in the figure below. Copyright ©ITECH Electronic Co., Ltd.
  • Page 79 System-Related Functions Copyright ©ITECH Electronic Co., Ltd.

  • Page 80: Chapter6 Measurement Functions

    This chapter describes the characteristics and operations of the basic metering function of IT7800 series source. IT7800 series source has rich functions of basic metering of electric energy and can accurately measure the parameters such as Vrms, Irms, Ipeak, Idc, CF, PF.

  • Page 81: Oscilloscope Mode

    DC current 6.2 Oscilloscope Mode IT7800 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 82 The slope refers to the change of the signal from low level to high level (rising edge) or from high level to low level (falling edge). The slope used as a trigger condition is referred to as the trigger slope. Copyright ©ITECH Electronic Co., Ltd.

  • Page 83: Harmonic Measurement

    ⚫ Both: Post and Raw, record two data file. 6.3 Harmonic measurement IT7800 series source can display harmonic parameters in the list or bar chart form to make the analysis of test result clear. Press key on the front panel, and the following initial interface of harmonic measurement will appear.
  • Page 84 LIST. You can press the Up and Down key to display the hidden rows, i.e. hidden data of single harmonic data. ⚫ Introduction to vector interface When vector mode is selected in the harmonic measurement mode, to enter the vector measurement interface, as shown in the figure below. Copyright ©ITECH Electronic Co., Ltd.

  • Page 85: Recorder Function

    File format: select the file format, include Tdms and CSV. ⚫ Export to udisk: exporting all of present data to U disk. ⚫ Meter sample: Set the sampling interval. Hold-On/Hold-Off: Pause screen data refresh (for data observation)/ Start dynamically observing the data Copyright ©ITECH Electronic Co., Ltd.
  • Page 86 Measurement Functions 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 87: Chapter7 Configuration Arbitrary Waveform

    List file. Detailed operation steps are as below: Press [Shift]+[V-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 88 Save: Save the list file to memory or to an external USB flash drive. 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 89: Open/Run List File

    If several List files are edited, press Recall to recall the List file to be tested. Detailed operation steps are as below: Press [Shift]+[V-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. Copyright ©ITECH Electronic Co., Ltd.

  • Page 90: Import/Export List File

    7.1.3 Import/Export List file Import List file IT7800 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 91 Angle: Executing the surge/sag at specific angle. Trig source Select the trigger source when the mode select to Trigger. Start angle Set the start phase angle of the surge/trap when the mode select to trigger. Copyright ©ITECH Electronic Co., Ltd.

  • Page 92: Self-Defined Waveform Function

    The distorted waveform can simulate voltage harmonic wave in the circuit. The user can set the extent to which the output voltage waveform deviates from the Sin wave voltage and test the usage of the DUT under this circumstance. Copyright ©ITECH Electronic Co., Ltd.
  • Page 93 “ ” Edit the THD wave. Press the “+” or “ ” enter to the edit interface. Thd profile: THD file name Thd formula: Distortion factor calculation formula. %r: displaying harmonics in the form of percentage to the overall voltage Copyright ©ITECH Electronic Co., Ltd.

  • Page 94: User-Defined Waveform

    “-” 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 95: Voltage Signals Simulation

    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 96: Chapter8 Technical Specifications

    < 200ppm/℃ F.S coefficient Frequency 16～500 Range High 16～2.4k Resolution 0.01 0.01% 16Hz～500Hz Accuracy 0.1% 500.01Hz～ 2.4kHz waveform 50/60Hz up to 50 order synthesizer Phase Range ° 0～360 Resolution ° Voltage setting Range 1phase -495～495 Resolution 0.01 Copyright ©ITECH Electronic Co., Ltd.
  • Page 97 ＜0.4% +0.4% F.S. DC,16～500Hz Accuracy ＜0.4% +(0.8%*kHz) F.S 500.01Hz～ 2.4kHz Harmonic Max. 50/60Hz up to 50 order measurement Others Efficiency Protection OVP, OCP, OPP, OTP, FAN, Sense Working 0℃- 50℃ Programming response time Remote Sense Compensation Copyright ©ITECH Electronic Co., Ltd.

  • Page 98: It7805-350-30U

    The dynamic response time test condition is: DC high-speed mode, and the capacitance of the DUT to be less than 10uF All the above parameters are subject to change without prior notice from ITECH IT7805-350-30U Input parameters...

  • Page 99: It7806-350-90

    When loopSpeed Low is low，it can better complied DUT’s characteristics； When LoopSpeed is High，the dynamic response *5The dynamic response time test condition is: DC high-speed mode, and the capacitance of the DUT to be less than 10uF All the above parameters are subject to change without prior notice from ITECH. IT7806-350-90 Input parameters...
  • Page 100 -495～495 Range reverse -990～990 Resolution 0.01 ＜0.1%+0.1% F.S Accuracy Temperature < 100ppm/℃ F.S coefficient Current setting multichannel/reverse -30～30 Range DC Output 1phase -90～90 Resolution 0.01 ＜0.3%+0.3% F.S Accuracy Temperature < 200ppm/℃ F.S coefficient Max. power Copyright ©ITECH Electronic Co., Ltd.
  • Page 101 The dynamic response time test condition is: DC high-speed mode, and the capacitance of the DUT to be less than 10uF All the above parameters are subject to change without prior notice from ITECH. Copyright ©ITECH Electronic Co., Ltd.

  • Page 102: It7809-350-90

    Accuracy 0.1% 500.01Hz～2.4kHz waveform 50/60Hz up to 50 orders synthesizer Phase Range ° 0～360 Resolution ° Voltage setting 1phase/multichannel -495～495 Range reverse -990～990 Resolution 0.01 ＜0.1%+0.1% F.S Accuracy Temperature < 100ppm/℃ F.S coefficient Current setting Copyright ©ITECH Electronic Co., Ltd.
  • Page 103 The dynamic response time test condition is: DC high-speed mode, and the capacitance of the DUT to be less than 10uF All the above parameters are subject to change without prior notice from ITECH. Copyright ©ITECH Electronic Co., Ltd.

  • Page 104: It7812-350-90

    < 200ppm/℃ F.S coefficient Frequency 16～500 Range High 16～2.4k Resolution 0.01 0.01% 16Hz～500Hz Accuracy 0.1% 500.01Hz～2.4kHz waveform 50/60Hz up to 50 orders synthesizer Phase Range ° 0～360 Resolution ° Voltage setting 1phase/multichannel -495～495 Range reverse -990～990 Copyright ©ITECH Electronic Co., Ltd.
  • Page 105 Resolution 0.001 Output power ＜0.4% +0.4% F.S. DC,16Hz～500Hz Accuracy ＜0.4% +＜ 500.01Hz～2.4kHz (0.8%*kHz) F.S Harmonic Max. 50/60Hz up to 50 orders measurement Others Efficiency Protection OVP, OCP, OPP, OTP, FAN,ECP,Sense Working 0℃-50℃ Programming response time Copyright ©ITECH Electronic Co., Ltd.

  • Page 106: It7815-350-90

    The dynamic response time test condition is: DC high-speed mode, and the capacitance of the DUT to be less than 10uF All the above parameters are subject to change without prior notice from ITECH. IT7815-350-90 Input parameters...
  • Page 107 0.01 ＜0.1%+0.1% F.S. DC,16Hz～500Hz Voltage RMS Accuracy ＜0.1%+(0.2%*kHz) F.S 500.01Hz～2.4kHz emperature coefficient < 100ppm/℃ F.S. Resolution 0.01 ＜0.1% + 0.2% F.S. DC,16Hz～150Hz Accuracy Current RMS ＜0.2% + 0.3% F.S. 150.01Hz～500Hz ＜0.3% + (0.6%*kHz) F.S 500.01Hz～2.4kHz Copyright ©ITECH Electronic Co., Ltd.

  • Page 108: Supplemental Characteristics

    The dynamic response time test condition is: DC high-speed mode, and the capacitance of the DUT to be less than 10uF All the above parameters are subject to change without prior notice from ITECH. 8.2 Supplemental characteristics Recommended calibration frequency: once a year Cooling style: fans Copyright ©ITECH Electronic Co., Ltd.

  • Page 109: Chapter9 Remote Control

    4. Select the USB device class to TMC or VCP. 9.2 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 110 When the instrument and computer are connected to the router, an independent IP address must be assigned for the instrument. Configure LAN Interface Information The configurable parameters of the IT7800 series power supply are described as follows. LAN Config： Mode: IP Address seting method, user can selectautomatically configure the ⚫...
  • Page 111 The detailed descriptions are as follows. Home ：Web home interface, displays the model and appearance of the ⚫ instrument; ⚫ Information: Displays the serial number of the instrument and more system Copyright ©ITECH Electronic Co., Ltd.

  • Page 112: Can Interface

    Web Control: Enables the Web control to begin controlling the instrument. This page allows you to monitor and control the instrument; 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. ⚫...

  • Page 113: Gpib Interface (Optional)

    1 and 30. Your computer’s GPIB interface card address must not conflict with any instrument on the interface bus. This setting is nonvo- latile; it will not be changed by *RST. When you purchase the interface accessory and successfully insert it into Copyright ©ITECH Electronic Co., Ltd.

  • Page 114: Interface (Optional)

    When using the RS-232 interface for communication, connect the pin 1, pin 2, and pin 3 of the IT-E177 to the PC. The pin description is as follows: Pins Description TXD, transmit data RXD, receive data DGND, ground Copyright ©ITECH Electronic Co., Ltd.

  • Page 115: Commonly Used Commands Overview

    COM2, etc) of PC. 9.6 Commonly Used Commands Overview The IT7800 series AC/DC power supply can be connected with the remote control device through the communication interface to realize the remote operation instrument by sending SCPI commands. This series of power supplies provides a detailed commands reference IT7800 Programming Guide.

  • Page 116: Demo Software Introduction

    //To clear the protection status -> OUTPut:PROTection:CLEar 9.7 Demo Software Introduction IT7800 series AC/DC power supply provides the following computer control software, convenient for users to achieve different test control.The standard version of the software can be downloaded from the official website, and the optional version of the software needs to be purchased separately.

  • Page 117: Appendix

    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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