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ITech IT8900G/L Series User Manual

Programmable dc electronic load
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Programmable DC Electronic
Load
IT8900G/L Series User Manual
Model: IT8900G/L Series
Version: V1.0/12,2024

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Summary of Contents for ITech IT8900G/L Series

  • Page 1 Programmable DC Electronic Load IT8900G/L Series User Manual Model: IT8900G/L Series Version: V1.0/12,2024...
  • Page 2 CAUTION sign until the in- pose. ITECH shall not be held liable Manual Part Number dicated conditions are for errors or for incidental or indirect fully understood and met.

  • Page 3: Quality Certification And Assurance

    Warranty ITECH warrants that the product will be free from defects in material and work- manship 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: Safety Symbols

    Failure to comply with these precautions or specific warn- ings elsewhere in this manual will constitute a default under safety standards of design, manufacture and intended use of the instrument. ITECH assumes no li- ability for the customer’s failure to comply with these precautions.
  • Page 5 This instrument is used for industrial purposes, do not apply this product to IT power supply system. • Never use the instrument with a life-support system or any other equipment subject to safety requirements. Copyright © Itech Electronic Co., Ltd.

  • Page 6: Environmental Conditions

    Make sure the vent hole is always unblocked. Environmental Conditions The instrument is designed for indoor use and an area with low condensation. The table below shows the general environmental requirements for the instrument. Copyright © Itech Electronic Co., Ltd.

  • Page 7: Regulation Tag

    The service life of the product is 10 years. The product can be used safely within the environmental protection period; oth- erwise, the product should be put into the recycling system. Copyright © Itech Electronic Co., Ltd.

  • Page 8: Waste Electrical And Electronic Equipment (Weee) Directive

    According to the equipment classifi- cation in Annex I of the WEEE direc- tive, this instrument belongs to the “Monitoring” product. If you want to return the unnecessary instrument, please contact the near- est sales office of ITECH. Copyright © Itech Electronic Co., Ltd.

  • Page 9: Compliance Information

    3. Use high-performance shielded interface cable to ensure conformity with the EMC standards listed above. Safety Standard IEC 61010-1:2010+A1:2016 This section provides general and universal terms. For more detailed infor- mation on the Declaration of Conformity, please contact ITECH personnel. Copyright © Itech Electronic Co., Ltd.

  • Page 10: Table Of Contents

    3.7.2 Auto-Switching Voltage Range Set(Measure>V-Range)......45 3.7.3 Setting Filter(Measure>Filter)..............46 3.7.4 Set transient over power loading capability(Enhance Power) ....46 3.8 Triggering Function ....................47 3.9 Dynamic Test Function ..................48 3.9.1 Continuous Mode ..................48 Copyright © Itech Electronic Co., Ltd. VIII...
  • Page 11 4.2 Additional features ....................123 5 References of Load Communication Interfaces............. 124 5.1 RS-232 interface ....................124 5.2 USB interface ....................... 126 5.3 GPIB interface ..................... 126 5.4 LAN Interface ....................... 127 5.4.1 Using Web Server..................128 Copyright © Itech Electronic Co., Ltd.
  • Page 12 IT8900G/L Series User Manual 5.4.2 Using Sockets.................... 129 A Appendix ........................130 A.1 Specifications of Red and Black Test Cables ............. 130 A.2 Fuse Replacement ....................131 Copyright © Itech Electronic Co., Ltd.

  • Page 13: Inspection And Installation

    Transportation If you need to transport non-cabinet products, you must pay attention to the fol- lowing to ensure the safety of equipment and personnel. Copyright © Itech Electronic Co., Ltd.
  • Page 14 After unpacking the cabinet product, if you need to move it to other places, you must pay attention to the following matters to ensure the safety of equipment and personnel. Copyright © Itech Electronic Co., Ltd.
  • Page 15 • 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 16: Verifying The Shipment

    After confirming that package contents are consistent and correct, please appropriately keep package box and related contents. The package requirements should be met when the instrument is returned to factory for repair. Copyright © Itech Electronic Co., Ltd.

  • Page 17: Instrument Size Introduction

    Inspection and Installation 1.3 Instrument Size Introduction The instrument should be installed at well-ventilated and rational-sized space. Please select appropriate space for installation based on the electronic load size. 4U Model Copyright © Itech Electronic Co., Ltd.
  • Page 18 Inspection and Installation 8U Model Copyright © Itech Electronic Co., Ltd.
  • Page 19 Inspection and Installation 15U Model Copyright © Itech Electronic Co., Ltd.
  • Page 20 Inspection and Installation 27U Model Copyright © Itech Electronic Co., Ltd.

  • Page 21: Connecting The Cabinet

    37U Model 1.4 Connecting the cabinet Over 54kW models of IT8900G/L series consist of two cabinets. The user needs to connect parallel cable and analog signal terminals between the two cabinets. Before connecting, the user needs to loosen the screws and take apart the rear panel which covers the terminals by using a screwdriver.
  • Page 22 Press the composite key [Shift]+[8](System) to enter the System Menu. b. Press the Right key to select “Parallel” and press [Enter] for parallel setting. • Single: Single mode. • Slave: Salve mode. Copyright © Itech Electronic Co., Ltd.

  • Page 23: Connecting The Power Cord

    If you can not use a suitable AC power cord, do not use the instrument. AC power input level Working voltage for this series electronic load is 100V~240V, AC power input level: 100V~240V 50Hz/60Hz Copyright © Itech Electronic Co., Ltd.
  • Page 24 3. Connect the other end of the power cord to the socket configured with protective earth. • Other models (15U, 27U and 37U instruments) provides the standard power cords as below. Copyright © Itech Electronic Co., Ltd.
  • Page 25 Connect the brown terminal to line (L), blue to neutral (N), and yellow- green to ground. 4. Mount the protective cover back to its original position. 5. Connect the plug on the other end of the power cord to a grounded AC outlet. Copyright © Itech Electronic Co., Ltd.

  • Page 26: Connecting The Dut

    • 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 27 1,200A, then 4 pieces of 360A red and black lines are required. 4. Install the load input terminal cover. 5. Directly connect the other end of the red and black lines to the DUT terminals. Copyright © Itech Electronic Co., Ltd.
  • Page 28 2. Operate Left/Right key and select Remote-Sense. Press [Enter] key. 3. Select ON to start Sense function; the instrument is set to remote sense measurement mode. 4. Connect the instrument and DUT as shown in the following figure. Copyright © Itech Electronic Co., Ltd.
  • Page 29 1. Make sure that the power of the DUT, IT-E165A, and IT8900 is turned off. 2. Refer to the following diagram to connect the IT8900 series instrument and the DUT. 3. Connect the power cord of IT-E165A. 4. Start the DUT and turn on the IT8900 power switch. Copyright © Itech Electronic Co., Ltd.
  • Page 30 Inspection and Installation 5. Turn on the Power switch of the IT-E165A. Copyright © Itech Electronic Co., Ltd.

  • Page 31: Quick Reference

    ♦ Power-on Selftest 2.1 Brief Introduction IT8900G/L series high speed and high power DC electronic load features as fast current rise and fall and low voltage loading capability. It has three voltage ranges: 150V, 600V, 1200V, and the maximum power ranges from 2kW to 54kW for a single unit.
  • Page 32 15 U 24 kW IT8924G/L-150-2400 IT8924G/L-600-1680 IT8924G/L-1200-960 27 U 30 kW IT8930G/L-150-2400 IT8930G/L-600-2100 IT8930G/L-1200-1200 36 kW IT8936G/L-150-2400 IT8936G/L-600-2400 IT8936G/L-1200-1440 42 kW IT8942G/L-150-2400 IT8942G/L-600-2400 IT8942G/L-1200-1680 48 kW IT8948G/L-150-2400 IT8948G/L-600-2400 IT8948G/L-1200-1920 54 kW IT8954G/L-150-2400 IT8954G/L-600-2400 IT8954G/L-1200-2160 Copyright © Itech Electronic Co., Ltd.

  • Page 33: Front Panel Introduction

    IT8900G/L series load is shown in the following figure. • The same model in IT8900G/L series has identical voltage, current and power ratings, while IT8900G series is high-end electronic load which performs better in speed, dynamic, current accuracy and operation modes, and IT8900L series is economical and more cost efficient.

  • Page 34: Keyboard Introduction

    The keyboard is shown in the following figure; Descriptions of the key function follow the figure below. Detailed description of keys. Description Name [Shift] [Shift] Composite key. [Local] [Local] key, To shift local and remote operation. Copyright © Itech Electronic Co., Ltd.

  • Page 35: Fast Function Key

    To set dynamic operation parameters. [Shift]+[3] (List） To set list operation function. [Shift]+[4] (Save) To save existing setting load parameter values, e. g., voltage, current and power. [Shift]+[5] (Battery) To operate battery test function. Copyright © Itech Electronic Co., Ltd.

  • Page 36: Function Description Of Vfd Status Indicators

    The load is under software over- The load is under constant Prot current protection status. resistance mode. The load is under constant Start external analog quantity Rear power mode. function. Copyright © Itech Electronic Co., Ltd.

  • Page 37: Rear Panel Introduction

    Schematic Diagram of Rear Panel of this series (8U) electronic load. This series (8U) load consists of two electronic loads (4U). The electronic load (4U) with front panel is the master and the other is the slave. Copyright © Itech Electronic Co., Ltd.
  • Page 38 15. SYSTEM BUS interface of slave, has been connected to SYSTEM BUS interface of master 16. Analog terminal of slave, has been connected to Analog terminal of master 17. Input terminal of slave, has been connected to Input terminal of master Copyright © Itech Electronic Co., Ltd.
  • Page 39 1. Threading hole for communication interface To use the communication interface function , please remove this panel before connecting the terminals. 2. SYSTEM BUS interface, external analog control terminal, remote sense terminal and latch button SW. Copyright © Itech Electronic Co., Ltd.
  • Page 40 The latch button SW of the instrument which is in single mode must keep LP state. 3. Input terminal 4. AC power switch and AC power input terminal • Schematic Diagram of Rear Panel of this series (27U*2) electronic load. Copyright © Itech Electronic Co., Ltd.

  • Page 41: Power-On Selftest

    8. Slave unit: AC power switch and AC power input terminal for slave. 2.7 Power-on Selftest A successful selftest indicates that the purchased load product meets delivery standards and is available for normal usage. Before operation, please confirm that you have fully understood the safety instructions. Copyright © Itech Electronic Co., Ltd.
  • Page 42 5. Press Up/Down key to switch between the display of product model, software version number, and product serial number. Error Information References The following error information may occur when an error occurs during Power On self-test: Copyright © Itech Electronic Co., Ltd.
  • Page 43 4. Check whether the fuse of the instrument is burned out. If fuse is burnt out, replace the fuse with the same type and rating. The specification is 3.15AT/250V. Refer to A.2 Fuse Replacement for detailed replacement procedures. Copyright © Itech Electronic Co., Ltd.

  • Page 44: Function And Features

    PC through a connection between the electronic load and PC. Under remote operation mode, except [Local]key, other keys on the board are disabled. The [Local] key can be used for switching to local operation mode. Copyright © Itech Electronic Co., Ltd.

  • Page 45: Constant-Status Operation Mode

    2. Set maximum working current value and press [Enter] for confirmation. Constant Current Range =200.00A 3. Set maximum voltage value and press [Enter] key. Constant Current High=1205.0V 4. Set minimum voltage value and press [Enter] key. Constant Current Copyright © Itech Electronic Co., Ltd.

  • Page 46: Constant Voltage Operation Mode（Cv

    • Use Left/Right key moving cursor and press Up/Down key to adjust values at corresponding positions. Operation Steps 1. Press [CV] key and [Shift]+[CV](Setup) to enter parameter setting screen. Constant Voltage Copyright © Itech Electronic Co., Ltd.

  • Page 47: Constant Resistance Operation Mode（Cr

    Under CR mode, the electronic load provides three ways to modify constant resistance. • Rotate adjusting knob to set constant resistance value. • Use numeric keys to input resistance value and press [Enter] key to confirm set constant resistance value. Copyright © Itech Electronic Co., Ltd.

  • Page 48: Operation Steps

    If input voltage rises, the input current decreases and power P (= V * I) will maintain at setting power, as shown in the following figure. Under CW mode, the electronic load provides three ways to modify constant power. Copyright © Itech Electronic Co., Ltd.

  • Page 49: Compound Operation Mode

    DUT from burning. For example, in charging station test, the electronic load needs to rise up to 700V under CV mode. During test process, in order to stabilize electronic load Copyright © Itech Electronic Co., Ltd.

  • Page 50: Input Control Function

    If [On/Off] lamp is on, the input is on; and if [On/Off] lamp is off, the input is off. When the electronic load input is on, the VFD status indicator "OFF" is unlit. Copyright © Itech Electronic Co., Ltd.

  • Page 51: Keyboard Locking Function

    Set the buzzer status. Set the buzzer as OFF status. On(default) Set the buzzer as ON status. LOAD ON KNOB MODE Set the pulse knob. Knob Update(default) Real-time update. No update (Recover to original value at ON/OFF). Copyright © Itech Electronic Co., Ltd.
  • Page 52 Select the LAN communication interface. Gateway= 192.168.0.1 IP= 192.168.0.125 Mask= 255.255.255.0 Socket Port= 30000 PARALLEL Parallel mode set up. Parallel Single Single mode. Slave Act as a slave mode. Master Act as a master mode. Copyright © Itech Electronic Co., Ltd.

  • Page 53: Restored To Factory Setting(Initialize)

    In Old mode, this knob can’t be used. Factory default is Update option. 1. Press the composite key [Shift]+[8](System) to enter system menu setting screen. 2. Operate Left/Right key and move to the Knob and press [Enter] key. Copyright © Itech Electronic Co., Ltd.

  • Page 54: Trigge Mode(Trigger)

    If Off is selected, the loading time will not be displayed. Factory default is Off option. 1. Press the composite key [Shift]+[8](System) to enter system menu setting screen. Copyright © Itech Electronic Co., Ltd.

  • Page 55: Communication Set

    Von point latch state, ON /OFF Latch Point= 0.00V Set the Von value. Protect PROTECT MENU Set hardware power protection. Max-P MAX POWER hardware protective Point=2000.0W power value. Set software current protection. I-Limit CURRENT LIMIT Copyright © Itech Electronic Co., Ltd.
  • Page 56 Measure voltage rise/fall time. Time V TIMER VOLTAGE FUNC Set low voltage value. Point1=0.00V High Set high voltage value. Point2=1200.0V Time C Measure current rise/fall time. TIMER CURRENT FUNC Set low current value. Point1=0.000A Copyright © Itech Electronic Co., Ltd.

  • Page 57: On-Timer Set(Protect>Time)

    This menu item is used to set the voltage range to auto-switch. When On is selected, the instrument will automatically switch to high range or low range. When Off is selected, the auto-switching voltage range function is disabled. Copyright © Itech Electronic Co., Ltd.

  • Page 58: Setting Filter(Measure>Filter)

    • The interval between the two over-power loading running must be up to 60 seconds. • When the loading power is over 1.1 times the rated power, the fan runs at full power. Copyright © Itech Electronic Co., Ltd.

  • Page 59: Triggering Function

    Manual (Def): manual trigger External: external signal trigger Hold: special command trigger Bus: BUS command trigger Timer: timer trigger 4. Press [Esc] to exit setting. The system displays original values under different modes. Copyright © Itech Electronic Co., Ltd.

  • Page 60: Dynamic Test Function

    2. Press [Shift]+[2](Tran) keys. Operate Left/Right key and move to On. Press [Enter] key (The Trig lamp that indicates VFD screen status is on). TRANSITION 3. Operate Left/Right key and select Continuous. Press [Enter] for confirmation. Copyright © Itech Electronic Co., Ltd.
  • Page 61 The load will continuously switch between A and B value. Time of operations is shown at bottom right. After the running count is up to 65535, it goes to zero and re-count, which doesn't affect the normal running of dynamic test. Copyright © Itech Electronic Co., Ltd.

  • Page 62: Pulse Mode

    4. Operate Left/Right key and select high rate or low rate. Move to the High- Rate and press [Enter] key. TRANSITION High-Rate Low-Rate 5. Set ascending slope and press [Enter] key. TRANSITION Rise up=2.0000A/uS 6. Set descending slope and press [Enter] key. Copyright © Itech Electronic Co., Ltd.

  • Page 63: Toggle Mode

    Under toggle mode with dynamic test function enabled, the load switches between A value and B value upon receiving a trigger signal, as shown in the following figure. The following picture shows the current waveform in toggle transient operation. Copyright © Itech Electronic Co., Ltd.
  • Page 64 7. Set A value and press [Enter] key. TRANSITION Level A=1.00A 8. Set B value and press [Enter] key. TRANSITION Level B=2.00A 9. Start dynamic test and operate key. Move to on and press [Enter] key. Copyright © Itech Electronic Co., Ltd.

  • Page 65: Ocp Test Function

    1：Voltage on level=0.00V Set Von voltage value. 2：Voltage on Delay=0.00S Set Von voltage delay time. Edit 3：Current Range=0.000A Set working current range. 4：Start Current=0.000A Set initial current value. 5：Step Current=0.000A Set step current value. Copyright © Itech Electronic Co., Ltd.

  • Page 66: Opp Test Function

    Operate OPP test documents. OPP TEST Recall Recall OPP File=1 Recall OPP test documents (1-5). OPP TEST OPP TEST 1：Voltage on level=0.00V Set Von voltage value. Edit 2：Voltage on Delay=0.00S Set Von voltage delay time. Copyright © Itech Electronic Co., Ltd.

  • Page 67: Battery Discharge Test Function

    During test, the operator can observe voltage, discharging time and discharged capacity of battery. Battery discharge test is a necessary step before battery replacement for it can reflect reliability and remaining life of battery. Copyright © Itech Electronic Co., Ltd.
  • Page 68 When using switch-type devices to directly connect the test object and electronic load, there will be a voltage surge at the moment the switch device is closed. The excessively high voltage surge will damage the electronic load. To Copyright © Itech Electronic Co., Ltd.

  • Page 69: Cr-Led Test Function

    CR mode, the electronic load only works when voltage applied at its both ends is higher than the diode break-over voltage to give a real simulation of diode working principle, i.e., the ripple current at real LED test. Copyright © Itech Electronic Co., Ltd.
  • Page 70 For example, the output voltage of LED driver is 50V, verify that whether the output current of LED is rated current 200mA. a. Press [CR] key and set corresponding constant resistance. (Set CR= 50Ω) b. Press [Shift]+[CV](Setup)keys for a series of related setting: range=7500.0 Copyright © Itech Electronic Co., Ltd.
  • Page 71 LED as shown in the red circle above. Or you can calculate the value of R and Vd by the following method. Vd=V*0.8 R=0.2V/I In the example: Vd=50V*0.8=40V Copyright © Itech Electronic Co., Ltd.

  • Page 72: Measure Function

    6. Use the following commands to read the voltage rising time, current rising time, voltage positive pulse time and current positive pulse time, when the power supply output is stable. SENSe:TIME:VOLTage:UP? SENSe:TIME:CURRent:UP? SENSe:VOLTage:POSitive:PULSe? SENSe:CURRent:POSitive:PULSe? 7. Close the power output. Copyright © Itech Electronic Co., Ltd.

  • Page 73: Configuration Save Function

    CC= 1.00A 2. Press [Shift]+[4](Save) to save the instrument's settings to a register. 5.89V 0.99A 5.89W Save: 1 3. Enter number [3] and [9], indicates the settings is saved in the 9th register in Group3. Copyright © Itech Electronic Co., Ltd.

  • Page 74: Von Function

    Press [Shift] + [9](Config) keys to enter configuration menu. Set voltage value in Voltage on under configuration menu to control On/Off status of electronic load. Based on Von value load and unload, the load has two modes: Living and Copyright © Itech Electronic Co., Ltd.
  • Page 75 When VON LATCH function is started, the load starts load test only when the power voltage rises and is higher than Von Point loading voltage. When the power voltage drops and is lower than Von Point unloading voltage, the load will not unload. Copyright © Itech Electronic Co., Ltd.

  • Page 76: Protective Function

    If not, disconnect the object. Press any key on load front board (or send command PROTection:CLEar), the load front board (OVP) word will get cleared and the load will exit OVP protection status. Copyright © Itech Electronic Co., Ltd.

  • Page 77: Overcurrent Protection (Ocp)

    2. Press Left/Right key to move to the Protect and press [Enter]. 3. Press Left/Right key to move to the Max-P and press [Enter]. 4. Press numeric keys and set the Max-P Point, press [Enter] to confirm. Copyright © Itech Electronic Co., Ltd.

  • Page 78: Overtemperature Protection (Otp)

    • Clear current oscillation protection status:Press any key on load front board (or send command to PROTection:CLEar), the load front board (OSC) word will get cleared and the load will exit OSC protection status. Copyright © Itech Electronic Co., Ltd.

  • Page 79: List Operation

    [Enter] key. LIST Recall Edit 2. Operate Left/Right key and move to the High-Rate and press [Enter] key. EDIT LIST High-Rate Low-Rate 3. Set maximum working current value and press [Enter] for confirmation. EDIT LIST Copyright © Itech Electronic Co., Ltd.
  • Page 80 If On Recall Edit is displayed under LIST MENU or the external analog control function is switched on, neither List nor Wave file editing is accessible. In this case, change On Recall Edit to Off Recall Edit before operation. Copyright © Itech Electronic Co., Ltd.

  • Page 81: Terminal Function Of Rear Panel

    On/ Off control terminal and current monitoring terminal. Terminal schematic (as shown below): Pin function CAN_H，CAN_L CANH and CANL terminal for CAN communication. (- Incomplete support) TRIG Positive input signal terminal for external trigger. Copyright © Itech Electronic Co., Ltd.

  • Page 82: External Trigger Function

    When external low level is connected, turn on the load input, then set the input [On/Off] key is invalid; when external high level is connected again, turn off the load input, while restore the [On/Off] key control. Copyright © Itech Electronic Co., Ltd.

  • Page 83: Voltage Fault Indication

    The 0 to 10V analog quantity output signal of current monitoring output terminal represents input current to which the terminal belongs from 0 to full range. An external voltmeter or oscilloscope can be connected to display input current change. Copyright © Itech Electronic Co., Ltd.

  • Page 84: Auto Test Function

    8. Set test delay time of step 1. If 1S is required, directly press [1] key. Press [Enter] key. Tpf is delay time before measurement. EDIT PROGRAM SEQ 01 P/F Delay Time=1.0S 9. Set loading time of step 2. If 2S is required, directly press [2] key. Press [Enter] key. Copyright © Itech Electronic Co., Ltd.
  • Page 85 The above steps only set entire framework of auto tests. Additional setting is required for specific parameters in each step. This design will facilitate modification of parameters in a single step. Copyright © Itech Electronic Co., Ltd.
  • Page 86 8. Press [Shift]+[4](Save) keys for saving. Press [11] to save as the first step of the Program 2. 0.00V 0.00A 0.00W Save：11 It is assumed that step 2 edits CV mode as follows: voltage: 3V, maximum current value: 5A, and minimum current value: 0A Copyright © Itech Electronic Co., Ltd.
  • Page 87 After the parameter settings are complete, the page is shown as follows. 0.0V 0.00A 0.0W CV=3.0V 7. Press [Shift]+[4](Save) keys for saving. Press [12] to save as the second step of the Program 2. 0.00V 0.00A 0.00W Save：12 Copyright © Itech Electronic Co., Ltd.
  • Page 88 4. Display auto test file 2. 0.00V 0.00A PRG02 STOP 5. Press [Shift]+[.] (Trigger) key. Operate auto test file 2. 0.00V 0.00A PRG02-01 On Pass 6. Press [Shift]+[0](Pause) key to pause auto test. Press Down key for next step. Copyright © Itech Electronic Co., Ltd.

  • Page 89: Parallel Function

    • Before connecting the system bus, the parallel mode must be single. 1. Connect the instruments according to the following diagram. a. Use standard network cables to connect System Bus terminals. Copyright © Itech Electronic Co., Ltd.
  • Page 90 (1 Master and 1Slave) in parallel as an example. The System Bus is used as connection between master and slaves; the Analog is used as analog signal connection for parallel. • Before connecting the system bus, the parallel mode must be single. Copyright © Itech Electronic Co., Ltd.
  • Page 91 2. After connection, configure one 8U load as a master unit and another 8U load as slave units. a. Press the composite key [Shift]+[8](System) to enter the System Menu. b. Press the Right key to select “Parallel” and press [Enter] for parallel setting. Copyright © Itech Electronic Co., Ltd.
  • Page 92 Press the composite key [Shift]+[8](System) to enter system menu setting screen. b. Operate Left/Right key and move to the Initialize and press [Enter] key. c. Select “YES” and Press [Enter] to restore to factory setting values. Copyright © Itech Electronic Co., Ltd.

  • Page 93: Technical Specification

    Do not cover the ventilation holes on the top, sides, or bottom of the instrument. • To ensure that the IT8900G/L series load meets the specified specifications and performance, please ensure that the inlet air temperature of the instrument is within the range of 0 to 25°C.
  • Page 94 ±(0.2%+0.2%FS) Protection range Overpower ≒2.02KW protection Overcurrent ≒8.4A ≒84A protection Overvoltage ≒1250V protection Overtemperature ≒85℃ protection Specification Current (CC) ≒8.4A ≒84A Voltage (CV) Short circuit ≒0V ≒0V Resistance (CR) ≒150mΩ Input terminal ≒1.6MΩ impedance Copyright © Itech Electronic Co., Ltd.

  • Page 95: It8902L-1200-80

    Constant resistance mode Accuracy Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Resolution 0.1W Mode Accuracy*1 0.2%+0.2%FS Dynamic Mode CC Mode T1＆T2 50uS~3600S /Res:1 us/10ms/100ms Dynamic Mode *2 Accuracy 5uS±100ppm Ascending/de- 0.001~0.08A/uS 0.01~0.8A/uS scending slope Copyright © Itech Electronic Co., Ltd.
  • Page 96 483mm(W)* 770.6mm(D)* 194.05mm(H) Dimension Weight 27kg Voltage 100~240Vac AC Input Frequency 50/60Hz Power 85VA max *1 Power F.S. = Vrange F.S. * Irange F.S. *2.The load current value is no less than 4% of FS_CCH. Copyright © Itech Electronic Co., Ltd.

  • Page 97: It8902G-600-140

    Min. rise time ≒15uS ≒15uS Measuring range Range 0~60V 0~600V Read-back voltage Resolution 10mV 100mV Accuracy ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~14A 0~140A Read-back current Resolution 10mA Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range Read-back power Resolution 0.1W Copyright © Itech Electronic Co., Ltd.

  • Page 98: It8902L-600-140

    *2.The load current value is no less than 4% of FS_CCH. 4.1.4 IT8902L-600-140 Model IT8902L-600-140 Input voltage 0~600V Input current 0~14A 0~140A Rated value ( 0 ~ 40 Input power ℃) Min. operating 0.42V/14A 4.2V/140A voltage Range 0~60V 0~600V Constant voltage mode Resolution 10mV Copyright © Itech Electronic Co., Ltd.
  • Page 99 ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~14A 0~140A Read-back current Resolution 10mA Accuracy ±(0.1%+0.1%FS) ±(0.1%+0.1%FS) Range Read-back power Resolution 0.1W Accuracy*1 ±(0.2%+0.2%FS) Protection range Overpower ≒2.02KW protection Overcurrent ≒14.7A ≒147A protection Overvoltage ≒630V protection Overtemperature ≒85℃ protection Copyright © Itech Electronic Co., Ltd.

  • Page 100: It8902G-150-200

    Resolution 10mV mode Accuracy ±(0.05%+0.05%FS) ±(0.05%+0.05%FS) Range 0~20A 0~200A Constant current Resolution 10mA mode Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range 0.004Ω~400Ω Constant resistance mode Accuracy Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Mode Resolution 0.1W Copyright © Itech Electronic Co., Ltd.
  • Page 101 Overcurrent ≒21A ≒210A protection Overvoltage ≒157V protection Overtemperature ≒85℃ protection Specification Current (CC) ≒21A ≒210A Voltage (CV) Short circuit ≒0V ≒0V Resistance (CR) ≒4mΩ Input terminal ≒800kΩ impedance 483mm(W)* 770.6mm(D)* 194.05mm(H) Dimension Weight 27kg Copyright © Itech Electronic Co., Ltd.

  • Page 102: It8902L-150-200

    Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Resolution 0.1W Mode Accuracy*1 0.2%+0.2%FS Dynamic Mode CC Mode T1＆T2 20uS~3600S /Res:1 us/10ms/100ms Accuracy 5uS±100ppm Dynamic Mode *2 Ascending/de- 0.001~0.2A/uS 0.01~2A/uS scending slope Min. rise time ≒100uS ≒100uS Measuring range Copyright © Itech Electronic Co., Ltd.
  • Page 103 483mm(W)* 770.6mm(D)* 194.05mm(H) Dimension Weight 27kg Voltage 100~240Vac AC Input Frequency 50/60Hz Power 95VA max *1 Power F.S. = Vrange F.S. * Irange F.S. *2.The load current value is no less than 4% of FS_CCH. Copyright © Itech Electronic Co., Ltd.

  • Page 104: It8904G-1200-160

    Min. rise time ≒15uS ≒15uS Measuring range Range 0~120V 0~1200V Read-back voltage Resolution 10mV 100mV Accuracy ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~16A 0~160A Read-back current Resolution 10mA Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range Read-back power Resolution 0.1W Copyright © Itech Electronic Co., Ltd.

  • Page 105: It8904L-1200-160

    4.1.8 IT8904L-1200-160 Model IT8904L-1200-160 Input voltage 0~1200V Input current 0~16A 0~160A Rated value ( 0 ~ 40 Input power ℃) Min. operating 1.2V/16A 12V/160A voltage Range 0~120V 0~1200V Constant voltage mode Resolution 10mV 100mV Copyright © Itech Electronic Co., Ltd.
  • Page 106 ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~16A 0~160A Read-back current Resolution 10mA Accuracy ±(0.1%+0.1%FS) ±(0.1%+0.1%FS) Range Read-back power Resolution 0.1W Accuracy*1 ±(0.2%+0.2%FS) Protection range Overpower ≒4.03KW protection Overcurrent ≒16.8A ≒168A protection Overvoltage ≒1250V protection Overtemperature ≒85℃ protection Copyright © Itech Electronic Co., Ltd.

  • Page 107: It8904G-600-280

    Resolution 10mV mode Accuracy ±(0.05%+0.05%FS) ±(0.05%+0.05%FS) Range 0~28A 0~280A Constant current Resolution 10mA mode Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range 0.015Ω~1.5KΩ Constant resistance mode Accuracy Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Mode Resolution 0.1W Copyright © Itech Electronic Co., Ltd.
  • Page 108 Overcurrent ≒29.3A ≒293A protection Overvoltage ≒630V protection Overtemperature ≒85℃ protection Specification Current (CC) ≒29.3A ≒293A Voltage (CV) Short circuit ≒0V ≒0V Resistance (CR) ≒15mΩ Input terminal ≒1MΩ impedance 483mm(W)* 770.6mm(D)* 194.05mm(H) Dimension Weight 34kg Copyright © Itech Electronic Co., Ltd.

  • Page 109: It8904L-600-280

    Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Resolution 0.1W Mode Accuracy*1 0.2%+0.2%FS Dynamic Mode CC Mode T1＆T2 20uS~3600S /Res:1 us/10ms/100ms Accuracy 5uS±100ppm Dynamic Mode *2 Ascending/de- 0.001~0.28A/uS 0.01~2.8A/uS scending slope Min. rise time ≒100uS ≒100uS Measuring range Copyright © Itech Electronic Co., Ltd.
  • Page 110 Height Weight 34 Kg Voltage 100~240Vac AC Input Frequency 50/60Hz Power 133VA max *1 Power F.S. = Vrange F.S. * Irange F.S. *2.The load current value is no less than 4% of FS_CCH. Copyright © Itech Electronic Co., Ltd.

  • Page 111: It8904G-150-400

    Min. rise time ≒12uS ≒12uS Measuring range Range 0~18V 0~150V Read-back voltage Resolution 10mV Accuracy ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~40A 0~400A Read-back current Resolution 10mA Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range Read-back power Resolution 0.1W Copyright © Itech Electronic Co., Ltd.

  • Page 112: It8904L-150-400

    *2.The load current value is no less than 4% of FS_CCH. 4.1.12 IT8904L-150-400 Model IT8904L-150-400 Input voltage 0~150V Input current 0~40A 0~400A Rated value ( 0 ~ 40 Input power ℃) Min. operating 0.075V/40A 0.75V400A voltage Range 0~18V 0~150V Constant voltage mode Resolution 10mV Copyright © Itech Electronic Co., Ltd.
  • Page 113 ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~40A 0~400A Read-back current Resolution 10mA Accuracy ±(0.1%+0.1%FS) ±(0.1%+0.1%FS) Range Read-back power Resolution 0.1W Accuracy*1 ±(0.2%+0.2%FS) Protection range Overpower ≒4.04KW protection Overcurrent ≒42A ≒420A protection Overvoltage ≒157V protection Overtemperature ≒85℃ protection Copyright © Itech Electronic Co., Ltd.

  • Page 114: It8906G-1200-240

    10mV 100mV mode Accuracy ±(0.05%+0.05%FS) ±(0.05%+0.05%FS) Range 0~24A 0~240A Constant current Resolution 10mA mode Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range 0.05Ω~5KΩ Constant resistance mode Accuracy Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Mode Resolution 0.1W Copyright © Itech Electronic Co., Ltd.
  • Page 115 Overcurrent ≒25.2A ≒252A protection Overvoltage ≒1250V protection Overtemperature ≒85℃ protection Specification Current (CC) ≒25.2A ≒252A Voltage (CV) Short circuit ≒0V ≒0V Resistance (CR) ≒50mΩ Input terminal ≒1.6MΩ impedance 483mm(W)* 770.6mm(D)* 194.05mm(H) Dimension Weight 40kg Copyright © Itech Electronic Co., Ltd.

  • Page 116: It8906L-1200-240

    Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Resolution 0.1W Mode Accuracy*1 0.2%+0.2%FS Dynamic Mode CC Mode T1＆T2 20uS~3600S /Res:1 us/10ms/100ms Accuracy 5uS±100ppm Dynamic Mode *2 Ascending/de- 0.001~0.24A/uS 0.01~2.4A/uS scending slope Min. rise time ≒100uS ≒100uS Measuring range Copyright © Itech Electronic Co., Ltd.
  • Page 117 483mm(W)* 770.6mm(D)* 194.05mm(H) Dimension Weight 40kg Voltage 100~240Vac AC Input Frequency 50/60Hz Power 180VA max *1 Power F.S. = Vrange F.S. * Irange F.S. *2.The load current value is no less than 4% of FS_CCH. Copyright © Itech Electronic Co., Ltd.

  • Page 118: It8906G-600-420

    Min. rise time ≒15uS ≒15uS Measuring range Range 0~60V 0~600V Read-back voltage Resolution 10mV 100mV Accuracy ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~42A 0~420A Read-back current Resolution 10mA Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range Read-back power Resolution 0.1W Copyright © Itech Electronic Co., Ltd.

  • Page 119: It8906L-600-420

    *2.The load current value is no less than 4% of FS_CCH. 4.1.16 IT8906L-600-420 Model IT8906L-600-420 Input voltage 0~600V Input current 0~42A 0~420A Rated value ( 0 ~ 40 Input power ℃) Min. operating 0.42V/42A 4.2V/420A voltage Range 0~60V 0~600V Constant voltage mode Resolution 10mV Copyright © Itech Electronic Co., Ltd.
  • Page 120 ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~42A 0~420A Read-back current Resolution 10mA Accuracy ±(0.1%+0.1%FS) ±(0.1%+0.1%FS) Range Read-back power Resolution 0.1W Accuracy*1 ±(0.2%+0.2%FS) Protection range Overpower ≒6.05KW protection Overcurrent ≒44A ≒440A protection Overvoltage ≒630V protection Overtemperature ≒85℃ protection Copyright © Itech Electronic Co., Ltd.

  • Page 121: It8906G-150-600

    Resolution 10mV mode Accuracy ±(0.05%+0.05%FS) ±(0.05%+0.05%FS) Range 0~60A 0~600A Constant current Resolution 10mA mode Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range 0.0015Ω~150Ω Constant resistance mode Accuracy Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Mode Resolution 0.1W Copyright © Itech Electronic Co., Ltd.
  • Page 122 Overcurrent ≒63A ≒630A protection Overvoltage ≒157V protection Overtemperature ≒85℃ protection Specification Current (CC) ≒63A ≒630A Voltage (CV) Short circuit ≒0V ≒0V Resistance (CR) ≒1.25mΩ Input terminal ≒800kΩ impedance 483mm(W)* 770.6mm(D)* 194.05mm(H) Dimension Weight 40.6kg Copyright © Itech Electronic Co., Ltd.

  • Page 123: It8906L-150-600

    Vin/Rset *(0.2%) + 0.2% IF.S. Range Constant power Resolution 0.1W Mode Accuracy*1 0.2%+0.2%FS Dynamic Mode CC Mode T1＆T2 20uS~3600S /Res:1 us/10ms/100ms Accuracy 5uS±100ppm Dynamic Mode *2 Ascending/descend- 0.001~0.6A/uS 0.01~6A/uS ing slope Min. rise time ≒100uS ≒100uS Measuring range Copyright © Itech Electronic Co., Ltd.
  • Page 124 483mm(W)* 770.6mm(D)* 194.05mm(H) Dimension Weight 40kg Voltage 100~240Vac AC Input Frequency 50/60Hz Power 180VA max *1 Power F.S. = Vrange F.S. * Irange F.S. *2.The load current value is no less than 4% of FS_CCH. Copyright © Itech Electronic Co., Ltd.

  • Page 125: It8912G-1200-480

    Min. rise time ≒20uS ≒20uS Measuring range Range 0~120V 0~1200V Read-back voltage Resolution 10mV 100mV Accuracy ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~48A 0~480A Read-back current Resolution 10mA Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range 12KW Read-back power Resolution Copyright © Itech Electronic Co., Ltd.

  • Page 126: It8912L-1200-480

    4.1.20 IT8912L-1200-480 Model IT8912L-1200-480 Input voltage 0~1200V Input current 0~48A 0~480A Rated value ( 0 ~ 40 Input power ℃) 12KW Min. operating 1.2V/48A 12V/480A voltage Range 0~120V 0~1200V Constant voltage mode Resolution 10mV 100mV Copyright © Itech Electronic Co., Ltd.
  • Page 127 ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~24A 0~240A Read-back current Resolution 10mA Accuracy ±(0.1%+0.1%FS) ±(0.1%+0.1%FS) Range 12KW Read-back power Resolution Accuracy*1 ±(0.2%+0.2%FS) Protection range Overpower ≒12.1KW protection Overcurrent ≒50.4A ≒504A protection Overvoltage ≒1250V protection Overtemperature ≒85℃ protection Copyright © Itech Electronic Co., Ltd.

  • Page 128: It8912G-600-840

    Resolution 10mV mode Accuracy ±(0.05%+0.05%FS) ±(0.05%+0.05%FS) Range 0~84A 0~840A Constant current Resolution 10mA mode Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range 0.005Ω~500Ω Constant resistance mode Accuracy Vin/Rset *(0.2%) + 0.2% IF.S. Range 12KW Constant power Mode Resolution Copyright © Itech Electronic Co., Ltd.
  • Page 129 Overcurrent ≒88A ≒880A protection Overvoltage ≒630V protection Overtemperature ≒85℃ protection Specification Current (CC) ≒88A ≒880A Voltage (CV) Short circuit ≒0V ≒0V Resistance (CR) ≒5mΩ Input terminal ≒500kΩ impedance 483mm(W)* 770.6mm(D)* 437.1mm(H) Dimension Weight 81.2kg Copyright © Itech Electronic Co., Ltd.

  • Page 130: It8912L-600-840

    Vin/Rset *(0.2%) + 0.2% IF.S. Range 12KW Constant power Resolution Mode Accuracy*1 0.2%+0.2%FS Dynamic Mode CC Mode T1＆T2 20uS~3600S /Res:1 us/10ms/100ms Accuracy 5uS±100ppm Dynamic Mode *2 Ascending/descend- 0.001~0.84A/uS 0.01~8.4A/uS ing slope Min. rise time ≒100uS ≒100uS Measuring range Copyright © Itech Electronic Co., Ltd.
  • Page 131 483mm(W)* 770.6mm(D)* 437.1mm(H) Dimension Weight 81.2kg Voltage 100~240Vac AC Input Frequency 50/60Hz Power 360VA max *1 Power F.S. = Vrange F.S. * Irange F.S. *2.The load current value is no less than 4% of FS_CCH. Copyright © Itech Electronic Co., Ltd.

  • Page 132: It8912G-150-1200

    Min. rise time ≒20uS ≒20uS Measuring range Range 0~18V 0~150V Read-back voltage Resolution 10mV Accuracy ±(0.025%+0.025%FS) ±(0.025%+0.025%FS) Range 0~120A 0~1200A Read-back current Resolution 10mA 100mA Accuracy ±(0.05%+0.1%FS) ±(0.05%+0.1%FS) Range 12KW Read-back power Resolution Copyright © Itech Electronic Co., Ltd.

  • Page 133: It8912L-150-1200

    4.1.24 IT8912L-150-1200 Model IT8912L-150-1200 Input voltage 0~150V Input current 0~120A 0~1200A Rated value ( 0 ~ 40 Input power ℃) 12KW Min. operating 0.075V/120A 0.75V/1200A voltage Range 0~18V 0~150V Constant voltage mode Resolution 10mV Copyright © Itech Electronic Co., Ltd.
  • Page 134 ±(0.025%+0.025%FS) Range 0~120A 0~1200A Read-back current Resolution 10mA 100mA Accuracy ±(0.1%+0.1%FS) ±(0.1%+0.1%FS) Range 12KW Read-back power Resolution Accuracy*1 ±(0.2%+0.2%FS) Protection range Overpower ≒12.1KW protection Overcurrent ≒126A ≒1260A protection Overvoltage ≒157V protection Overtemperature ≒85℃ protection Copyright © Itech Electronic Co., Ltd.

  • Page 135: Additional Features

    *1 Power F.S. = Vrange F.S. * Irange F.S. *2.The load current value is no less than 4% of FS_CCH. 4.2 Additional features Memory capacity: 100 groups. Recommended calibration frequency: 1 time/year. Cooling method: fan. Copyright © Itech Electronic Co., Ltd.

  • Page 136: References Of Load Communication Interfaces

    [Shift] + 8(System). The odd and even items are saved in NVM. Baud rate Through front board [Shift] + 8(System), the user may select one Baud rate saved in NVM: 4800 /9600 /19200 /38400 /57600 /115200 Copyright © Itech Electronic Co., Ltd.
  • Page 137 • The interface cable must be connected to the correct serial port (COM1, COM2, etc.) of the computer. Setting of communication Before communication operation, be sure to match load and PC parameters (as follows). Copyright © Itech Electronic Co., Ltd.

  • Page 138: Usb Interface

    Press Left/Right key to find Communication. Select GPIB and set address. Input address and press [Enter] for confirmation. The load works by setting GPIB address on front board. GPIB address is saved in NVM. Copyright © Itech Electronic Co., Ltd.

  • Page 139: Lan Interface

    IP and TCP/IP communications with the instru- ment. An IP Address consists of 4 decimal numbers separated by periods. Each decimal number ranges from 0 through 255 with no leading zeros (for example, 169.254.2.20). Copyright © Itech Electronic Co., Ltd.

  • Page 140: Using Web Server

    The following figure is just as an example and the Web interface of different models are different. The actual shown page shall be subject to the connected instrument. Copyright © Itech Electronic Co., Ltd.

  • Page 141: Using Sockets

    This page allows you to monitor and control the instrument; • Security: change the password and control access to the Web interface; • Manual: Go to the ITECH official website and view or download the relevant documents. • Logout: logout the Web interface.

  • Page 142: A Appendix

    ♦ Fuse Replacement A.1 Specifications of Red and Black Test Cables ITECH provides you with optional red and black test cables, which are sold indi- vidually and you can select for test. For specifications of ITECH test cables and maximum current values, refer to the table below.

  • Page 143: Fuse Replacement

    The way to replace the fuse changes accordingly. The common ways are as follows. Please choose the corresponding way of disassembly and replace- ment based on the fuse assembly of the actual instrument. Copyright © Itech Electronic Co., Ltd.
  • Page 144 Appendix If there are no fuse assembly on the instrument rear panel, it means that you can’t replace the fuse by yourself. Please contact the ITECH engineer on the condition of the same malfunction. Copyright © Itech Electronic Co., Ltd.
  • Page 145 2. Have a visual inspection of the fuse to see whether it is burnt out; if yes, replace it with another fuse of the same specification. Re- fer to the corresponding technical specifi- cations for fuse rating. Copyright © Itech Electronic Co., Ltd.
  • Page 146 3. Please replace with a fuse of the same specification. Refer to the technical specifi- cation of the corresponding instrument. 4. When install, put into the fuse box firstly. Then Push and turn the fuse box to 90 de- grees clockwise. Copyright © Itech Electronic Co., Ltd.
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