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ITech IT-M3800 Series User Manual

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Regenerative DC Electronic
Load
IT-M3800 Series User Manual
Model: IT-M3800 Series
Version: V2.6/5,2025

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Summary of Contents for ITech IT-M3800 Series

  • Page 1 Regenerative DC Electronic Load IT-M3800 Series User Manual Model: IT-M3800 Series Version: V2.6/5,2025...
  • 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

    United Kingdom laws (if the year is shown, it indicates that the year when the design is approved). The CSA mark is a registered trademark of the Cana- dian Standards Association. 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

    4.1.8 Short-Circuit Analog Function ..............51 4.1.9 VON Function（Von） ................52 4.2 Advanced Feature....................54 4.2.1 LIST Function ....................54 4.2.2 Battery Discharging Test Function .............. 59 4.3 Protection Function ....................60 4.3.1 Set Over-Current Protection (OCP)............. 62 Copyright © Itech Electronic Co., Ltd. VIII...
  • Page 11 6.1.17 IT-M3802-500-12 .................... 152 6.1.18 IT-M3804-500-24 .................... 155 6.1.19 IT-M3806-500-36 .................... 157 6.1.20 IT-M3812-500-72 .................... 160 6.1.21 IT-M3802-800-8 ....................162 6.1.22 IT-M3804-800-16 .................... 164 6.1.23 IT-M3806-800-24 .................... 167 6.1.24 IT-M3812-800-48 .................... 169 6.1.25 IT-M3806-1500-12 ..................172 Copyright © Itech Electronic Co., Ltd.
  • Page 12 7 Routine Maintenance ..................... 178 7.1 Instrument Self-Test..................... 178 7.2 Cleaning and Maintenance .................. 178 7.3 Contact of ITECH Engineers ................179 7.4 Return for Repair....................180 A Appendix ........................182 A.1 Specifications of Red and Black Test Cables ............. 182 A.2 Fuse Replacement ....................

  • Page 13: Quick Reference

    IT-M3800 series regenerative DC electronic load can not only perform as a DC load, but also feed back power to the local grid purpose, which saves electricity and cooling costs for you.
  • Page 14 IT-M3801-10-120 120A 1.2kW IT-M3802-10-240 240A 2.4kW IT-M3803-10-360 360A 3.6kW IT-M3807-10-720 720A 7.2kW IT-M3802-32-80 IT-M3804-32-160 160A IT-M3806-32-240 240A IT-M3812-32-480 480A 12kW IT-M3802-80-40 IT-M3804-80-80 IT-M3806-80-120 120A IT-M3812-80-240 240A 12kW IT-M3802-300-20 IT-M3804-300-40 300V IT-M3806-300-60 IT-M3812-300-120 120A 12kW Copyright © Itech Electronic Co., Ltd.

  • Page 15: Front-Panel Overview

    The above model is permanently connected, Equipment Class I, Pollution De- gree 2, Installation Category II. • Mode of operation: Continuous. 1.2 Front-Panel Overview The front panel of this series of instruments is shown in the figure below. Copyright © Itech Electronic Co., Ltd.

  • Page 16: Keyboard Introduction

    6 Up, down, left, and right cursor navigation tion port keys and Enter key 3 Vacuum fluorescent display 7 Push-on knob (VFD) 4 Function and composite keys 1.3 Keyboard Introduction The keyboard introduction of this series instrument is shown as follows. Copyright © Itech Electronic Co., Ltd.
  • Page 17 Set the input current value [P-set] Set the input power value [R-set] Set the resistance value [Enter] Operation confirmation key [Esc] Press this key to exit the current operation interface. [0]-[9] Numeric keys +/– Positive and negative signs Copyright © Itech Electronic Co., Ltd.
  • Page 18 Returns the instrument to the specified setup. (Recall) [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 control mode. Copyright © Itech Electronic Co., Ltd.

  • Page 19: Push-On Knob

    [Enter] key to confirm the operation. 1.5 Rear Panel Introduction The rear panel of the of the this series model (after removing the protective cov- er) is shown below. 1U Models Copyright © Itech Electronic Co., Ltd.

  • Page 20: Vfd Indicator Lamps Description

    The load is in a Rear Analog function begin to state of constant work. voltage input. The load is in a Addr When received command state of constant successfully, the flag will current input. display 3 seconds. Copyright © Itech Electronic Co., Ltd.

  • Page 21: Configuration Menu Function

    2. Press [Enter] to select the desired menu item. Enter the parameter setting interface of this menu item. 3. After finishing the menu setting, press [Enter] key to save the setting. Press [Esc] key to return to the previous menu level. Copyright © Itech Electronic Co., Ltd.
  • Page 22 Set the power rising time. (only displayed P-Rise Slope under the CP Mode) Set the power falling time. (only displayed P-Fall Slope under the CP Mode) Set Von function Latch Latch mode Level=0.00V Set the Von value Living Living mode Copyright © Itech Electronic Co., Ltd.

  • Page 23: System Menu Function

    [On/Off] is OFF state. Sense Set the sense function state. Turn the sense function off. Turn the sense function on. ListTrig Source Set the trigger method for the List files running. Copyright © Itech Electronic Co., Ltd.
  • Page 24 LAN menu (see below). LAN communication interface Info View the LAN information. LAN Status: Down IP Mode: Auto IP: 0.0.0.0 Mask: 0.0.0.0 Gateway: 0.0.0.0 DNS1: 0.0.0.0 DNS2: 0.0.0.0 MAC: 8C:C8:F4:40:01:E1 MDNS Status: HostName: HostDesc: Domain: TCPIP:INSTR Copyright © Itech Electronic Co., Ltd.
  • Page 25 CAN communication interface. Select the baud rate from the following op- Baudrate tions: 5k/10k/20k/40k/50k/80k/100k/125k/ 200k/250k/400k/500k/600k/800k/1000k. Set the instrument address to a number from Address 0 to 127. • Protocol Canfestival: Use standard can protocol. Copyright © Itech Electronic Co., Ltd.
  • Page 26 Function setting of pin 3 IO-4. Ext-Trig, Not-Invert Function setting of pin 4 IO-5. INH-Living, Not-Invert Function setting of pin 5 IO-6. Sync-On, Not-Invert Function setting of pin 6 IO-7. Sync-Off, Not-Invert Function setting of pin 7 Copyright © Itech Electronic Co., Ltd.

  • Page 27: Options Introduction

    2.5.6 EtherCAT Interface (Optional). – IT-E177: Interface card that includes RS-232 communication interface, external analog and other functions. The accessory has a total of 10 pins, and the details of each pin are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 28 Fiber optic modules and cables are used for data transmission and commu- nication between parallel units, and are highly resistant to interference. The fiber optic module and cable are the necessary accessories for the parallel Copyright © Itech Electronic Co., Ltd.
  • Page 29 ITECH provides rack mount kits for users as mounting accessories. – IT-E155A+IT-E155C: Select this mounting kit when mounting a 1U in- strument to an ITECH cabinet. Please refer to 《IT-E155 User Manual 》 for detailed description about the installation method.

  • Page 30: Inspection And Installation

    LAN communication This accessory is se- cable lected when the LAN in- terface is used for starting up remote operation. Calibration Report It contains the test report and calibration report of the instrument before delivery. Copyright © Itech Electronic Co., Ltd.

  • Page 31: Instrument Size Introduction

    The instrument should be installed at well-ventilated and rational-sized space. Please select appropriate space for installation based on the instrument size. The detailed dimension drawings of this series instrument are as follows (unit: mm, deviation: ±1 mm): 1U Models (with protective cover) Copyright © Itech Electronic Co., Ltd.
  • Page 32 Inspection and Installation 1U Models (without protective cover) Copyright © Itech Electronic Co., Ltd.
  • Page 33 Inspection and Installation 2U Models (with protective cover) Copyright © Itech Electronic Co., Ltd.

  • Page 34: Connecting The Power Cord

    Inspection and Installation 2U Models (without protective cover) 2.3 Connecting the Power Cord Precautions To prevent electric shock and damage to the instrument, observe the following precautions. Copyright © Itech Electronic Co., Ltd.
  • Page 35 The yellow-green wire is grounding wire, which is connected to the PE termi- nal of power input on the rear panel; the others are live wires, which are Copyright © Itech Electronic Co., Ltd.
  • Page 36 Therefore, this estimated value is for reference only and should not be used as an exact basis. Connecting the Power Cord Wiring Diagram: • When the 1U and 2U models are connected to three-phase power, the wir- ing diagram is shown below. Copyright © Itech Electronic Co., Ltd.
  • Page 37 2. Confirm that the power switch is in the OFF position and verify that there is no dangerous voltage on the connection terminals. 3. Remove the protective cover outside the AC input terminal on the rear panel. Copyright © Itech Electronic Co., Ltd.

  • Page 38: Connecting The Device Under Test (Dut)

    2.4 Connecting the Device Under Test (DUT) This section describes how to connect the test cables between the instrument and DUT. Precautions To prevent electric shock and damage to the instrument, observe the following precautions. Copyright © Itech Electronic Co., Ltd.
  • Page 39 Provision must be made to disconnect the external energy source before touching the input or sense terminals. • Always use test cables provided by ITECH to connect the equip- ment. If test cables from other factories are used, please confirm the maximum current that the test cables can withstand.
  • Page 40 The connection diagram and steps of remote measurement are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 41 8. Connect the other end of the red and black cables to the DUT. The positive and negative poles must be properly connected and fastened when wiring. 9. Power on the instrument and turn on the Sense function of the instrument. For details, see 5.7 Sense Function (Sense). Copyright © Itech Electronic Co., Ltd.

  • Page 42: Remote Interface Connection

    • VCP: Virtual serial port. For Win7 system, you can download IT-M3900 VCP driver from ITECH official website or contact technical support engineer; for Win10 system, you do not need to install VCP driver. The operation steps to change the USB interface type in System Menu are as follows.

  • Page 43: Lan Interface

    They are typically large, centrally-managed networks with services such as DHCP and DNS servers. When connected to a computer, a network cable can be used to connect to the router, and the computer is also con- nected to the router. Copyright © Itech Electronic Co., Ltd.
  • Page 44 DNS1: This field enters the primary address of the server. Contact your LAN administrator for server details. The same numbering notation applies as for the IP Address. A value of 0.0.0.0 indicates that no default server is defined. Copyright © Itech Electronic Co., Ltd.

  • Page 45: Using Web Server

    192.168.200.100 is the default IP address. If it has been changed by the user, replace this IP with the actual configuration found in the instrument's Menu. The homepage of different models are different. The actual shown page shall be subject to the connected instrument. Copyright © Itech Electronic Co., Ltd.

  • Page 46: Using Telnet

    Web Control: Enables the Web control to begin controlling the instrument. This page allows you to monitor and control the instrument; • Manual: Go to the ITECH official website and view or download the relevant documents. • Upload: Performs a system upgrade.

  • Page 47: Can Interface

    2. Rotate the knob to select I/O and press [Enter]. 3. Press the Left/Right key to select CAN and press [Enter]. 4. Set the baud rate, address and other parameters, press [Enter]. Copyright © Itech Electronic Co., Ltd.

  • Page 48: Can Troubleshooting

    Please ensure that the screws have been screwed down in order to have a full connection. GPIB Configuration Each device on the GPIB (IEEE-488) interface must have a unique whole num- ber address between 1 and 30. Your computer’s GPIB interface card address Copyright © Itech Electronic Co., Ltd.

  • Page 49: Interface (Optional)

    8. Press the numeric keys to set the GPIB address and press [Enter]. 2.5.5 RS–232 Interface (Optional) The RS-232 interface shares the same communication card (IT-E177) with the analog function. Definition of RS-232 Pins The definition of RS-232 pins are as follows. Copyright © Itech Electronic Co., Ltd.

  • Page 50: Troubleshooting

    Make sure the correct cable and adapter are connected. Note that internal wiring may not be correct even if the cable has a suitable plug; • The cable must be connected to the correct serial ports (COM1, COM2, etc) of PC. Copyright © Itech Electronic Co., Ltd.

  • Page 51: Ethercat Interface (Optional)

    Slave address (this address is 2.Addr: 4097 assigned to this slave by the EtherCAT master). Slave address alias. 3.Alias Addr: 0 Communication card hardware 4.HW Ver: 256 version number. Communication card software 5.Soft Ver: 1 version number. Copyright © Itech Electronic Co., Ltd.

  • Page 52: Getting Started

    When you turn the POWER switch on for the first time after purchase, the instru- ment starts with its factory default settings. Each time thereafter, the instrument starts according to the setting that you selected as outlined in 5.6 Set the Power-on State (PowerOn). Copyright © Itech Electronic Co., Ltd.
  • Page 53 AC input power to the unit. Power Switch Introduction The power switch is located in the lower left corner of the front panel. The power switch is a button, and pressing once indicates ON and pressing again indicates OFF. Copyright © Itech Electronic Co., Ltd.
  • Page 54 If an error occurs during the self-test, an error message is displayed. The follow- ing table lists the error messages you might see. Error message Error Description Eeprom Failure The EEPROM is damaged. Main FrameInitializeLost The system setting data is lost. Copyright © Itech Electronic Co., Ltd.
  • Page 55 There can only be one single unit as the Master, and the other single units must be set to Slave. After the setting is completed, power off and restart each single unit. 5. If the instrument still does not start, contact ITECH technical support engineer. Copyright © Itech Electronic Co., Ltd.

  • Page 56: Set Input Value

    • The user can set the parameters related to instrument protection function in the Protect menu, including OCP /OPP /UVP. • Function menu includes input list, batterydischarging test function and so Copyright © Itech Electronic Co., Ltd.

  • Page 57: On/Off Control

    If the [On/Off] key light is on, indicates that the input is turned on. If the [On/Off] key light is off, indicates that the input is turned off.When the load input is on, the operating status flag (CV/CC/CW/CR) on the VFD will be illuminated. Copyright © Itech Electronic Co., Ltd.

  • Page 58: Load Function

    2. Press [Enter] key to enter into the parameter setting interface. 3. Press the Left / Right key or turn the knob to adjust the value of this parameter. 4. After the parameter settings are complete, press [Enter]. Copyright © Itech Electronic Co., Ltd.

  • Page 59: Basic Operation Mode

    • Constant Resistance Operation Mode (CR) Under CR mode, the electronic load is equivalent to a constant resistance and will give linear change of current with input voltage change. As shown in Copyright © Itech Electronic Co., Ltd.

  • Page 60: Complex Operation Mode

    When the voltage rises to exceed the set constant resistance for sinking, it will switch to CR mode for sinking. The CV+CR mode can be applied to the LED simulation and test the LED power supply to get the LED current ripple parameters. Copyright © Itech Electronic Co., Ltd.
  • Page 61 CW modes. It is suitable for lithium ion battery charger testing to get a com- plete V-I charging curve. Moreover, the auto mode can avoid damaging the UUT when the protection circuit is damaged. Copyright © Itech Electronic Co., Ltd.

  • Page 62: Set The Input-On/Input-Off Delay Time （On Delay/ Off Delay

    2. Use knob to select I-Rise Slope or I-Fall Slope and press [Enter] to confirm. 3. Use knob or the number keys to adjust the I-Rise / I-Fall Slope and press [Enter] to confirm. Copyright © Itech Electronic Co., Ltd.

  • Page 63: Set V-Rise / V-Fall Slope（V-Rise / V-Fall Slope

    102% of current range. Under CV mode, short cir- cuit current is equivalent to that constant voltage value of load is 0 V. For 2U models, press the [Shift]+[.] (Short) key to switch short circuit status. Copyright © Itech Electronic Co., Ltd.

  • Page 64: Von Function（Von

    When VON LIVING 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 unload. Copyright © Itech Electronic Co., Ltd.
  • Page 65 Von Point loading voltage. When the power voltage drops and is lower than Von Point unloading voltage, the load will unload. The procedures to set Von function are as follows. Copyright © Itech Electronic Co., Ltd.

  • Page 66: Advanced Feature

    4.2 Advanced Feature 4.2.1 LIST Function The IT-M3800 series load supports a total of 10 List files (List01 to List10), each of which can be set up to 200 steps. You need to edit the voltage/current value, slope and time width of each step, or you can set repeat times (0 to 999999) for each List file.
  • Page 67 TX and RX of the fiber to realize List synchronization triggering between multiple units. None Turn off (default) Tout Turn on Save to Save the edited List program. group Copyright © Itech Electronic Co., Ltd.
  • Page 68 The procedures are as follows: 1. Insert the USB flash drive into the front panel USB connector. 2. Press the composite keys [Shift]+[I-set] (Function) on the front panel to en- ter the function menu. Copyright © Itech Electronic Co., Ltd.
  • Page 69 Supports exporting the internal List file to an external USB flash drive. The ex- ported List file is saved in .csv format. 1. Insert the USB flash drive into the front panel USB connector. Copyright © Itech Electronic Co., Ltd.
  • Page 70 At this point, the interface returns to the main interface of the system and Lxx/xxxx WTG is displayed in the lower right corner. 7. Turn on the [On/Off]. 8. Based on the selected trigger method, perform the trigger operation. Copyright © Itech Electronic Co., Ltd.

  • Page 71: Battery Discharging Test Function

    Resume. 4.2.2 Battery Discharging Test Function The IT-M3800 series load provides the battery discharging test function, which is suitable for discharging tests on all types of portable batteries. The user can set three cut off conditions: cut off voltage, current off capacity and the charging time.

  • Page 72: Protection Function

    Press [Protect] to enter Protect menu interface. The descriptions of protect menu are listed in the table below. Protect Protection function menu Overcurrent protection Turn the OCP function off. Turn the OCP function on. Level OCP limit Delay Delay time Overpower protection Copyright © Itech Electronic Co., Ltd.
  • Page 73 On), the VFD status indicators Prot and Off are lit, and [On/Off] is turned off. Although [On/Off] is turned off, there may be dangerous voltage at the input electrodes. Do not touch the wiring cable or the elec- trode terminals. Copyright © Itech Electronic Co., Ltd.

  • Page 74: Set Over-Current Protection (Ocp)

    Input too high external current. How to Set The operation steps to set OCP are as follows. 1. Press the composite keys [Protect] on the front panel to enter the protection menu. (1U Model) Copyright © Itech Electronic Co., Ltd.

  • Page 75: Set Over-Power Protection (Opp)

    5. Set the protection limit Level and the delay time Delay in sequence, and press [Enter] to confirm. 4.3.3 Set Under-Voltage Protection (UVP) Users can enable the UVP function and set the instrument warm-up time Warm-up, protection limit Level and protection delay time Delay. When the Copyright © Itech Electronic Co., Ltd.

  • Page 76: Over-Temperature Protection (Otp)

    Even with proper ventilation, the instrument can over- heat in the following situations. • If the ambient temperature is too high. • If you use the instrument to test for long periods. Copyright © Itech Electronic Co., Ltd.

  • Page 77: Sense Reverse Protection

    When you return power to the instrument, verify that the cooling fan is running. If not, please contact ITECH Technical Support. Leaving the instrument powered on with an inoperative cooling fan may result in damage to the instrument.

  • Page 78: Basic Operation

    All panel keys, except the [On/Off] and [Shift]+[3] (Local) keys, are locked. – You can press [Shift]+[3] (Local) to switch the remote control to local control. The mode modification will not affect the input parameters of the load. Copyright © Itech Electronic Co., Ltd.

  • Page 79: Key Lock Function

    Current setting and resistance setting under CRCC mode: Is and Rs Voltage setting, current setting, resistance setting and power setting under AUTO mode: Vs, Is, Ps and Rs Config Menu Operation mode I-Rise Slope I-Fall Slope Von function mode and level Copyright © Itech Electronic Co., Ltd.

  • Page 80: Save Operation

    Only records voltage data during the data acquisition period. • Current Only records current data during the data acquisition period. • Voltage and current Records current and voltage data during the data acquisition period. Copyright © Itech Electronic Co., Ltd.
  • Page 81 2. Set the value of Sample Period and press [Enter]. 3. Set the value of Duration and press [Enter]. Copyright © Itech Electronic Co., Ltd.
  • Page 82 Voltage trigger When the DC terminals detect that the voltage reaches the trigger voltage setting value and is within the range of the upper and lower trigger limits, a data recording operation is triggered. Copyright © Itech Electronic Co., Ltd.

  • Page 83: Set The Beeper Status (Beep)

    1. Press the composite keys [Shift]+[P-set] (System) on the front panel to en- ter the system menu. The first displayed menu item Beep is used to set the beeper status. 2. Press [Enter] key to enter the parameter setting interface. Copyright © Itech Electronic Co., Ltd.

  • Page 84: Set The Power-On State (Poweron)

    The affected parameters and the reset information are as shown in the following table. Table 5–1 Initial value of the parameter Category Parameter Initial Value Main Voltage setting under CV Rated voltage of the interface mode: Vs instrument Current setting under CC mode: Is Copyright © Itech Electronic Co., Ltd.
  • Page 85 On/Off state Config Operation mode menu I-Rise Slope 1% of the maximum current value of the in- strument, in A/ms I-Fall Slope 1% of the maximum current value of the in- strument, in A/ms Copyright © Itech Electronic Co., Ltd.

  • Page 86: Sense Function (Sense)

    3. Press the Left / Right key or turn the knob to adjust the value of this parameter. • Off: Default value, indicates turn the sense function off. • On: Indicates turn the sense function on. 4. After the parameter settings are complete, press [Enter]. Copyright © Itech Electronic Co., Ltd.

  • Page 87: Select Trigger Source (Trig Source)

    1. Press the composite keys [Shift]+[P-set] (System) on the front panel to en- ter the system menu. 2. Turn the knob to select the ListTrig Source and press [Enter]. Copyright © Itech Electronic Co., Ltd.

  • Page 88: Set The Communication Information (I/O Con)

    This menu item is used to control whether the instrument is working in single mode or in parallel mode. This chapter takes three instruments as an example to describe how to parallelize the single units and how to return from parallel mode to single mode. Copyright © Itech Electronic Co., Ltd.
  • Page 89 (Single). • 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. Copyright © Itech Electronic Co., Ltd.
  • Page 90 Insert the fiber optic module into the hole corresponding to TX, RX. Insert the plug of the fiber optic cable into the fiber optic module and hear a click Copyright © Itech Electronic Co., Ltd.
  • Page 91 3. Remove the cables connection of the fiber optical and DC input terminals be- tween three units. 4. Power on the three instruments separately. After the instrument is restarted, the VFD shows that the instrument is work- ing in single mode. Copyright © Itech Electronic Co., Ltd.

  • Page 92: Digital I/O Function (Digital Port)

    Ground terminal, that is, the negative terminal Level signal corresponding to each of the above 7 pins. In this chapter, all the pulse signals involved in the digital I/O function are switched from high level to low level. Copyright © Itech Electronic Co., Ltd.
  • Page 93 Output→PWM, the user needs to set the frequency (PWM Freq) and duty cycle (PWM Duty) values. For example, if the PWM Freq is set to 100Hz and the PWM Duty is set to 10%, the output waveform is as follows: Copyright © Itech Electronic Co., Ltd.

  • Page 94: Io-1. Ps-Clear, Not-Invert

    Indicates whether to invert the input/output Invert pulse or level signal. • Invert: Yes Invert • Not-Invert: No This default function means that when Clear the instrument generates protection, the protection state can be cleared via this pin. Copyright © Itech Electronic Co., Ltd.
  • Page 95 Pulse input: When the instrument is under protection, the instrument will clear protection after receiving the pulse signal from external input. 1. Refer to the figure below to connect pin 1 to the external oscilloscope. Copyright © Itech Electronic Co., Ltd.

  • Page 96: Io-2. Ps, Not-Invert

    IO-2 pin can be set to 【Ps】, 【Input】, 【Output】. Parameter Description IO–2. Ps, Not- Parameter setting for pin 2. Invert Not- Indicates whether to invert the input/output Invert pulse or level signal. • Invert: Yes Invert Copyright © Itech Electronic Co., Ltd.
  • Page 97 2 outputs high level; when the instrument is under protection, pin 2 outputs low level. When pin 2 is set to Invert, the output level is completely opposite. 1. Refer to the figure below to connect pin 2 to the external oscilloscope. Copyright © Itech Electronic Co., Ltd.

  • Page 98: Io-3. Off-Status, Not-Invert

    This default function indicates the exist- Status ing [On/Off] state of the instrument. Input Pin 3 receives the level signal from the outside. Output Pin 3 sends the digital signal (1, 0, PWM) to the outside. Copyright © Itech Electronic Co., Ltd.
  • Page 99 1. Refer to the figure below to connect pin 3 to the external oscilloscope. 2. Confirm that pin 3 function is set to the default option, namely IO-3. Off-Status, Not-Invert. 3. Turn on [On/Off]. Copyright © Itech Electronic Co., Ltd.

  • Page 100: Io-4.Trig(In), Not-Invert

    Meter Triggers the run- ning of Meter function. This function needs to be triggered at the upper com- puter side through SCPI in- struction. For de- tails, refer to instructions Copyright © Itech Electronic Co., Ltd.
  • Page 101 Taking the triggering of List function as an example, the text below will introduce how to use pin 4’s default function Ext-Trig. • Trig–Out 1. Refer to the figure below to connect pin 4 to the external oscilloscope. Copyright © Itech Electronic Co., Ltd.
  • Page 102 5. Check the oscilloscope and confirm whether pin 4 has following pulse signal output. Level rise slope 10us Level fall slope Minimum time width 30us for low level keep • Trig-In 1. Refer to the figure below to connect pin 4 to the external oscilloscope. Copyright © Itech Electronic Co., Ltd.

  • Page 103: Io-5. Inh-Living, Not-Invert

    IO-5 pin can be set to 【Inhibit】, 【Input】, 【Output】. Parameter Description IO–5. Living, Parameter setting for pin 5. Not-Invert Not- Indicates whether to invert the input/output pulse or Invert level signal. • Invert: Yes Invert Copyright © Itech Electronic Co., Ltd.
  • Page 104 The [On/Off] button light is lighted on and VFD still displays On, but the actual input is 0; when pin 5 receives high level sig- nal again, the input state is recovered. Copyright © Itech Electronic Co., Ltd.
  • Page 105 The param- eter requirements of this pulse signal are as follows: Level rise slope 10us Level fall slope Minimum time width 30us for low level keep Copyright © Itech Electronic Co., Ltd.

  • Page 106: Io-6. Sync-On, Not-Invert

    In addition, the VFD screen on the front panel displays Inhibit-Ps. When the protection state is cleared, manually turn on [On/Off] again. 5.11.6 IO–6. Sync-On, Not-Invert IO-6 pin can be set to 【Sync-On】, 【Input】, 【Output】. Copyright © Itech Electronic Co., Ltd.
  • Page 107 When pin 6 is set to default Sync-On function, pin 6 has bi-directional I/O func- tion, which can receive pulse signal input from the external instrument and also can output pulse signal to external instrument. The parameter requirements of this pulse signal are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 108 4. Set the voltage to 10V on the front panel of instrument A, and turn on [On/Off]. At this time, check the oscilloscope. The instrument A’s pin 6 outputs pulse signal and the instrument B’s input function is synchronously turned on. Copyright © Itech Electronic Co., Ltd.

  • Page 109: Io-7. Sync-Off, Not-Invert

    When pin 7 is set to default Sync-Off function, pin 7 has bi-directional I/O func- tion, which can receive pulse signal input from the external instrument and also can output pulse signal to external instrument. The parameter requirements of this pulse signal are as follows: Copyright © Itech Electronic Co., Ltd.
  • Page 110 4. Press [On/Off] on the front panel of instrument A to turn off the input function. At this time, check the oscilloscope. The instrument A’s pin 7 outputs pulse signal and the instrument B’s input function is synchronously turned off. Copyright © Itech Electronic Co., Ltd.

  • Page 111: Analogue Function (Ext-Program) (Optional)

    The analog signal bandwidth is less than 100Hz, and the signal bandwidth sup- ports any waveform. When the programmed signal frequency or amplitude ex- ceeds the output capacity, the instrument will automatically limit the output amplitude. The pins description is as below. Copyright © Itech Electronic Co., Ltd.
  • Page 112 0 V to the maximum rated value. +10V Analog out The 10V reference voltage output by the instrument can be connected to a resistance subdivision for analog control. Input1 Analog in Set the input setting value. Copyright © Itech Electronic Co., Ltd.
  • Page 113 • On: Turns on the external analog function. In this state, the channel parameters cannot be set. • Off: Turns off the external analog function. In this state, the channel parameters can be set. Copyright © Itech Electronic Co., Ltd.
  • Page 114 And set these two values respectively through the front panel keys (or the SCPI remote command). The setting principles of calculation parameters in other modes are the same. Copyright © Itech Electronic Co., Ltd.

  • Page 115: Analog Control

    1. Refer to the figure below to complete the pin connection. 2. Based on the above formula conversion relationship, calculate the M (slope coefficient) and b (offset) values of the voltage setting value. Copyright © Itech Electronic Co., Ltd.

  • Page 116: View The System Information (System Info)

    This menu item is used to view the system information of the instrument. The procedures to view the system information are as follows. 1. Press the composite keys [Shift]+[P-set] (System) on the front panel to en- ter the system menu. Copyright © Itech Electronic Co., Ltd.

  • Page 117: Restored To Factory Setting (System Reset)

    This menu item is used to restore some parameter settings to factory setting values. The procedures to set the menu item are as follows. 1. Press the composite keys [Shift]+[P-set] (System) on the front panel to en- ter the system menu. Copyright © Itech Electronic Co., Ltd.
  • Page 118 Current setting under CRCC mode: Is Resistance setting under CRCC Rated maximum resist- mode: Rs ance value of the instrument Voltage setting under AUTO Rated voltage of the mode: Vs instrument Copyright © Itech Electronic Co., Ltd.
  • Page 119 I-Rise Slope 1% of the maximum cur- rent value of the instru- ment, in A/ms I-Fall Slope 1% of the maximum cur- rent value of the instru- ment, in A/ms Von mode Latch Von level Copyright © Itech Electronic Co., Ltd.

  • Page 120: Observe Power Grid Information (Ac-Meter)

    4. After the parameter settings are complete, press [Enter]. If you select Display and press [Enter] key, the interface will display the voltage, frequency and power value. Press [Esc] key twice to exit the function. Copyright © Itech Electronic Co., Ltd.

  • Page 121: Display Loading Time (Disp On Timer)

    Before upgrading, you need to note the following points: 1. Description about system upgrading files. Before upgrading, please contact ITECH technical staff to obtain the follow- ing two upgrading files, and put them under the root directory of the USB flash drive.
  • Page 122 For example, when there are multiple system upgrading package post- fixed with .itech in the root directory of your USB flash drive, you need to use a text editing tool to open the configuration file and specify the up- grade package name corresponding to the present upgrade operation.
  • Page 123 3. Select upgrade in whole or in part based on actual needs. Then, press [Enter]. – SN: ALL Indicates to upgrade all. – SN1: xxxxxxxxxxxxxxxxxx Indicates to upgrade the selected instrument. Rotate the knob to check the SNs of all instruments in the parallel network; press Right Copyright © Itech Electronic Co., Ltd.
  • Page 124 The system will automatically perform upgrading. If No is selected, it means to exit upgrading, and the system will di- rectly enter into the main interface. 5. After the upgrading is completed, you need to restart the instrument manually. Copyright © Itech Electronic Co., Ltd.

  • Page 125: Technical Specification

    ♦ IT-M3802-300-20 ♦ IT-M3804-300-40 ♦ IT-M3806-300-60 ♦ IT-M3812-300-120 ♦ IT-M3802-500-12 ♦ IT-M3804-500-24 ♦ IT-M3806-500-36 ♦ IT-M3812-500-72 ♦ IT-M3802-800-8 ♦ IT-M3804-800-16 ♦ IT-M3806-800-24 ♦ IT-M3812-800-48 ♦ IT-M3806-1500-12 ♦ IT-M3812-1500-24 ♦ Supplemental Characteristics 6.1 Main Specification Copyright © Itech Electronic Co., Ltd.

  • Page 126: M3801-10-120

    Read Back Temper- ature Coefficient ≤50ppm/℃ Current Rising slope 8A/ms Current slope Falling slope 8A/ms Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.002%*I + 0.05%FS Load Regulation Current ≤0.05% + 0.05%FS Copyright © Itech Electronic Co., Ltd.
  • Page 127 Max. input current 12.5Aac Max. efficiency 86.0% Power Factor 0.99 DC component ≤0.2A Current harmonics ≤5% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Re- 0.1ms sponse Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature Copyright © Itech Electronic Co., Ltd.

  • Page 128: M3802-10-240

    0.1A Setup Resolution Power Resistance 0.001Ω Voltage 0.001V Read Back Current 0.1A Resolution Power Voltage ≤0.05% + 0.05%FS Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Setup Accuracy Lower limit：1/(1/Rset+(1/Rset)*0.2 +0.008) Resistance Upper limit：1/(1/Rset-(1/Rset)*0.2-0.008) Copyright © Itech Electronic Co., Ltd.
  • Page 129 Corresponding voltage 0 to 10V Voltage 0 to 10V corresponds to external voltage monitor monitoring voltage 0 to 10V Other parameters: 3phase 200V～480V Grid voltage range Single phase 100V～240V AC Input Frequency 50/60Hz Copyright © Itech Electronic Co., Ltd.

  • Page 130: M3803-10-360

    AC input is 200 Vac, the AC power limit can be calculated as follows: P=200Vac*12.5Aac=2500VA. 6.1.3 IT-M3803-10-360 Parameter IT-M3803-10-360 Voltage 0～10V Current 6～360A Rated value Power 60～3600W Resistance 0.003Ω～1.67Ω Copyright © Itech Electronic Co., Ltd.
  • Page 131 Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.002%*I + 0.05%FS Load Regulation Current ≤0.05% + 0.05%FS Short-circuit test Current 367.2A 375A Output protection Overpower protection 3672W Remote Sense ≤2V Voltage Copyright © Itech Electronic Co., Ltd.
  • Page 132 Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Re- 0.1ms sponse Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 200Vdc Isolation AC to GND 2100Vdc Cooling Copyright © Itech Electronic Co., Ltd.

  • Page 133: M3807-10-720

    0.001V Read Back Current 0.1A Resolution Power Voltage ≤0.05% + 0.05%FS Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Setup Accuracy Lower limit：1/(1/Rset+(1/Rset)*0.1 +0.008) Resistance Upper limit：1/(1/Rset-(1/Rset)*0.1-0.008) Read Back Voltage ≤0.05% + 0.05%FS Accuracy Copyright © Itech Electronic Co., Ltd.
  • Page 134 Corresponding voltage 0 to 10V Voltage 0 to 10V corresponds to external voltage monitor monitoring voltage 0 to 10V Other parameters: Grid voltage range 3phase 200V～480V AC Input Frequency 50/60Hz Max. apparent 11.0kVA power Max. input current 25Aac Copyright © Itech Electronic Co., Ltd.

  • Page 135: M3802-32-80

    P=200Vac*25Aac*1.732=8660VA. 6.1.5 IT-M3802-32-80 Parameter IT-M3802-32-80 Voltage 0～32V Current 0～80A Power 0～2000W Rated value Resistance 0.012Ω～1200Ω Min. operating voltage 0.5V at 80A Input leakage current 0.01A Setup Resolution Voltage 0.001V Copyright © Itech Electronic Co., Ltd.
  • Page 136 Remote Sense ≤10V Voltage External programming voltage 0 to 10V current program Corresponding current 0 to 80A External analog （optional） Current 0A to 80A corresponds to external current monitor monitoring voltage 0V to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 137 Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 200Vdc Isolation AC to GND 2100Vdc Cooling 459mm*56.9mm*771.9mm(Overall) Dimension (W*H*D) 437mm*43.5mm*744.22mm (Excluding protective cover and side feet) Weight( net) 12kg Copyright © Itech Electronic Co., Ltd.

  • Page 138: M3804-32-160

    ≤0.05% + 0.05%FS Read Back Current ≤0.1% + 0.1%FS Accuracy Power ≤0.5% + 0.5%FS Voltage ≤30ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Voltage ≤30ppm/℃ Read Back Temper- ature Coefficient ≤50ppm/℃ Current Current slope Rising slope 160A/ms Copyright © Itech Electronic Co., Ltd.
  • Page 139 AC Input Frequency 50/60Hz Max. apparent 4.5kVA power Max. input current 12.5Aac Max. efficiency 89.5% Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Re- 0.1ms sponse Time Copyright © Itech Electronic Co., Ltd.

  • Page 140: M3806-32-240

    Voltage 0～32V Current 0～240A Power 0～6000W Rated value Resistance 0.005Ω～400Ω Min. operating voltage 0.5V at 240A Input leakage current 0.01A Voltage 0.001V Current 0.01A Setup Resolution Power Resistance 0.001Ω Read Back Voltage 0.001V Resolution Copyright © Itech Electronic Co., Ltd.
  • Page 141 0V to 10V External analog （optional） External programming voltage 0 to 32V voltage program Corresponding voltage 0 to 10V Voltage 0 to 32V corresponds to external voltage monitor monitoring voltage 0 to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 142 If the phase voltage of a single-phase AC input is 100 Vac, the AC power limit can be calculated as follows: P=200Vac*12.5Aac=2500VA. • If the line voltage of a three-phase AC input is 200 Vac, the AC power limit can be calculated as follows: P=200Vac*12.5Aac*1.732=4330VA. Copyright © Itech Electronic Co., Ltd.

  • Page 143: M3812-32-480

    Read Back Temper- ature Coefficient ≤50ppm/℃ Current Rising slope 480A/ms Current slope Falling slope 480A/ms Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.02% + 0.02%FS Load Regulation Current ≤0.05% + 0.05%FS Copyright © Itech Electronic Co., Ltd.
  • Page 144 Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Re- 0.1ms sponse Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 200Vdc Copyright © Itech Electronic Co., Ltd.

  • Page 145: M3802-80-40

    Voltage ≤0.03% + 0.03%FS Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Setup Accuracy Lower limit: 1/(1/Rset+(1/Rset)*0.05 +0.0005) Upper limit: 1/(1/Rset-(1/Rset) Resistance *0.05-0.0005) Voltage ≤0.03% + 0.03%FS Read Back Accuracy Current ≤0.1% + 0.1%FS Copyright © Itech Electronic Co., Ltd.
  • Page 146 Voltage 0 to 80V corresponds to external voltage monitor monitoring voltage 0 to 10V Other parameters: 3phase 200V～480V Grid voltage range AC Input Single phase 100V～240V Frequency 50/60Hz Max. apparent 2.25kVA power Max. input current 12.5Aac Max. efficiency Copyright © Itech Electronic Co., Ltd.

  • Page 147: M3804-80-80

    P=100Vac*12.5Aac=1250VA. 6.1.10 IT-M3804-80-80 Parameter IT-M3804-80-80 Voltage 0～80V Current 0～80A Power 0～4000W Rated value Resistance 0.015Ω～1200Ω Min. operating voltage 0.8V at 80A Input leakage current 0.01A Voltage 0.001V Setup Resolution Current 0.01A Copyright © Itech Electronic Co., Ltd.
  • Page 148 Remote Sense ≤8V Voltage External programming voltage 0 to 10V current program Corresponding current 0 to 80A External analog （optional） Current 0A to 80A corresponds to external current monitor monitoring voltage 0V to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 149 Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to 500Vdc Isolation AC to 2100Vdc Cooling 459mm*56.9mm*771.9mm(Overall) Dimension (W*H*D) 437mm*43.5mm*744.22mm (Excluding protective cover and side feet) Weight( net) 13.5kg Copyright © Itech Electronic Co., Ltd.

  • Page 150: M3806-80-120

    ≤0.5% + 0.5%FS Setup Accuracy Lower limit: 1/(1/Rset+(1/Rset)*0.05 +0.0005) Upper limit: 1/(1/Rset-(1/Rset) Resistance *0.05-0.0005) Voltage ≤0.03% + 0.03%FS Read Back Current ≤0.1% + 0.1%FS Accuracy Power ≤0.5% + 0.5%FS Voltage ≤30ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Copyright © Itech Electronic Co., Ltd.
  • Page 151 0 to 10V Other parameters: 3phase 200V～480V Grid voltage range AC Input Single phase 100V～240V Frequency 50/60Hz Max. apparent 6.5kVA power Max. input current 12.5Aac Max. efficiency Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Copyright © Itech Electronic Co., Ltd.

  • Page 152: M3812-80-240

    P=200Vac*12.5Aac*1.732=4330VA. 6.1.12 IT-M3812-80-240 Parameter IT-M3812-80-240 Voltage 0～80V Current 0～240A Power 0～12000W Rated value Resistance 0.005Ω～400Ω Min. operating voltage 0.8V at 240A Input leakage current 0.01A Setup Resolution Voltage 0.001V Copyright © Itech Electronic Co., Ltd.
  • Page 153 Remote Sense ≤8V Voltage External programming voltage 0 to 10V current program Corresponding current 0 to 240A External analog （optional） Current 0A to 240A corresponds to exter- current monitor nal monitoring voltage 0V to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 154 Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to 500Vdc Isolation AC to GND 2100Vdc Cooling 483mm*106.9mm*795.3mm (Overall) Dimension (W*H*D) 437mm*88.4mm*767.62mm (Excluding protective cover and side feet) Weight( net) 30kg Copyright © Itech Electronic Co., Ltd.

  • Page 155: M3802-300-20

    ≤0.03% + 0.03%FS Read Back Current ≤0.1% + 0.1%FS Accuracy Power ≤0.5% + 0.5%FS Voltage ≤30ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Voltage ≤30ppm/℃ Read Back Tem- perature Coefficient ≤50ppm/℃ Current Current slope Rising slope 20A/ms Copyright © Itech Electronic Co., Ltd.
  • Page 156 AC Input Frequency 50/60Hz Max. apparent 2.25kVA power Max. input current 12.5Aac Max. efficiency 90.0% Power Factor 0.99 DC component ≤0.2A Current harmonics ≤5% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Re- 0.1ms sponse Time Copyright © Itech Electronic Co., Ltd.

  • Page 157: M3804-300-40

    0～40A Power 0～4000W Rated value Resistance 0.065Ω～4500Ω Min. operating voltage 3V at 40A Input leakage current 0.01A Voltage 0.001V Current 0.01A Setup Resolution Power Resistance 0.001Ω Voltage 0.001V Read Back Current 0.01A Resolution Power Copyright © Itech Electronic Co., Ltd.
  • Page 158 0V to 10V External analog （optional） External programming voltage 0 to 300V voltage program Corresponding voltage 0 to 10V Voltage 0 to 300V corresponds to external voltage monitor monitoring voltage 0 to 10V Other parameters: Copyright © Itech Electronic Co., Ltd.
  • Page 159 If the phase voltage of a single-phase AC input is 100 Vac, the AC power limit can be calculated as follows: P=200Vac*12.5Aac=2500VA. • If the line voltage of a three-phase AC input is 200 Vac, the AC power limit can be calculated as follows: P=200Vac*12.5Aac*1.732=4330VA. Copyright © Itech Electronic Co., Ltd.

  • Page 160: M3806-300-60

    Read Back Temper- ature Coefficient ≤50ppm/℃ Current Rising slope 60A/ms Current slope Falling slope 60A/ms Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.01% + 0.01%FS Load Regulation Current ≤0.05% + 0.05%FS Copyright © Itech Electronic Co., Ltd.
  • Page 161 12.5Aac Max. efficiency 93.0% Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Re- 0.1ms sponse Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Copyright © Itech Electronic Co., Ltd.

  • Page 162: M3812-300-120

    Input leakage current 0.01A Voltage 0.001V Current 0.01A Setup Resolution Power Resistance 0.001Ω Voltage 0.001V Read Back Current 0.01A Resolution Power Voltage ≤0.03% + 0.03%FS Setup Accuracy Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Copyright © Itech Electronic Co., Ltd.
  • Page 163 External programming voltage 0 to 300V voltage program Corresponding voltage 0 to 10V Voltage 0 to 300V corresponds to external voltage monitor monitoring voltage 0 to 10V Other parameters: Grid voltage range 3phase 200V～480V AC Input Frequency 50/60Hz Copyright © Itech Electronic Co., Ltd.

  • Page 164: M3802-500-12

    AC input is 200 Vac, the AC power limit can be calculated as follows: P=200Vac*25Aac*1.732=8660VA. 6.1.17 IT-M3802-500-12 Parameter IT-M3802-500-12 Voltage 0～500V Current 0～12A Rated value Power 0～2000W Resistance 0.3Ω～15000Ω Copyright © Itech Electronic Co., Ltd.
  • Page 165 ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.01% + 0.01%FS Load Regulation Current ≤0.05% + 0.05%FS Short-circuit test Current 12.24A 12.5A Output protection Overpower protection 2040W 530V Remote Sense ≤10V Voltage Copyright © Itech Electronic Co., Ltd.
  • Page 166 Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 1000Vdc Isolation AC to GND 2100Vdc Cooling 459mm*56.9mm*771.9mm(Overall) Dimension (W*H*D) 437mm*43.5mm*744.22mm (Excluding protective cover and side feet) Weight( net) 12kg Copyright © Itech Electronic Co., Ltd.

  • Page 167: M3804-500-24

    +0.0001) Upper limit: 1/(1/Rset-(1/Rset) Resistance *0.05-0.0001) Voltage ≤0.03% + 0.03%FS Read Back Current ≤0.1% + 0.1%FS Accuracy Power ≤0.5% + 0.5%FS Voltage ≤30ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Voltage ≤30ppm/℃ Read Back Temper- ature Coefficient ≤50ppm/℃ Current Copyright © Itech Electronic Co., Ltd.
  • Page 168 Grid voltage range AC Input Single phase 100V～240V Frequency 50/60Hz Max. apparent 4.5kVA power Max. input current 12.5Aac Max. efficiency 92.5% Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Copyright © Itech Electronic Co., Ltd.

  • Page 169: M3806-500-36

    P=200Vac*12.5Aac*1.732=4330VA. 6.1.19 IT-M3806-500-36 Parameter IT-M3806-500-36 Voltage 0～500V Current 0～36A Power 0～6000W Rated value Resistance 0.1Ω～5000Ω Min. operating voltage 2.5V at 36A Input leakage current 0.003A Voltage 0.01V Current 0.001A Setup Resolution Power Resistance 0.01Ω Copyright © Itech Electronic Co., Ltd.
  • Page 170 0V to 10V External analog （optional） External programming voltage 0 to 500V voltage program Corresponding voltage 0 to 10V Voltage 0 to 500V corresponds to external voltage monitor monitoring voltage 0 to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 171 If the phase voltage of a single-phase AC input is 100 Vac, the AC power limit can be calculated as follows: P=200Vac*12.5Aac=2500VA. • If the line voltage of a three-phase AC input is 200 Vac, the AC power limit can be calculated as follows: P=200Vac*12.5Aac*1.732=4330VA. Copyright © Itech Electronic Co., Ltd.

  • Page 172: M3812-500-72

    Read Back Temper- ature Coefficient ≤50ppm/℃ Current Rising slope 72A/ms Current slope Falling slope 72A/ms Voltage ≤0.01% + 0.01%FS Line Regulation Current ≤0.03% + 0.03%FS Voltage ≤0.01% + 0.01%FS Load Regulation Current ≤0.05% + 0.05%FS Copyright © Itech Electronic Co., Ltd.
  • Page 173 Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Re- 0.1ms sponse Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to 1000Vdc Copyright © Itech Electronic Co., Ltd.

  • Page 174: M3802-800-8

    Current 0.001A Resolution Power Voltage ≤0.03% + 0.03%FS Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Setup Accuracy Lower limit: 1/(1/Rset+(1/Rset)*0.05 +0.0001) Upper limit: 1/(1/Rset-(1/Rset) Resistance *0.05-0.0001) Read Back Voltage ≤0.03% + 0.03%FS Accuracy Copyright © Itech Electronic Co., Ltd.
  • Page 175 Voltage 0 to 800V corresponds to external voltage monitor monitoring voltage 0 to 10V Other parameters: 3phase 200V～480V Grid voltage range AC Input Single phase 100V～240V Frequency 50/60Hz Max. apparent 2.25kVA power Max. input current 12.5Aac Copyright © Itech Electronic Co., Ltd.

  • Page 176: M3804-800-16

    P=100Vac*12.5Aac=1250VA. 6.1.22 IT-M3804-800-16 Parameter IT-M3804-800-16 Voltage 0～800V Current 0～16A Power 0～4000W Rated value Resistance 0.22Ω～11250Ω Min. operating voltage 4V at 16A Input leakage current 0.003A Setup Resolution Voltage 0.01V Copyright © Itech Electronic Co., Ltd.
  • Page 177 Remote Sense ≤16V Voltage External programming voltage 0 to 10V current program Corresponding current 0 to 16A External analog （optional） Current 0A to 16A corresponds to external current monitor monitoring voltage 0V to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 178 Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to GND 1600Vdc Isolation AC to GND 2100Vdc Cooling 459mm*56.9mm*771.9mm(Overall) Dimension (W*H*D) 437mm*43.5mm*744.22mm (Excluding protective cover and side feet) Weight( net) 13.5kg Copyright © Itech Electronic Co., Ltd.

  • Page 179: M3806-800-24

    ≤0.5% + 0.5%FS Setup Accuracy Lower limit: 1/(1/Rset+(1/Rset)*0.05 +0.0001) Upper limit: 1/(1/Rset-(1/Rset) Resistance *0.05-0.0001) Voltage ≤0.03% + 0.03%FS Read Back Accuracy Current ≤0.1% + 0.1%FS Power ≤0.5% + 0.5%FS Voltage ≤30ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Copyright © Itech Electronic Co., Ltd.
  • Page 180 Other parameters: 3phase 200V～480V Grid voltage range AC Input Single phase 100V～240V Frequency 50/60Hz Max. apparent 6.5kVA power Max. input current 12.5Aac Max. efficiency 93.0% Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Copyright © Itech Electronic Co., Ltd.

  • Page 181: M3812-800-48

    P=200Vac*12.5Aac*1.732=4330VA. 6.1.24 IT-M3812-800-48 Parameter IT-M3812-800-48 Voltage 0～800V Current 0～48A Power 0～12000W Rated value Resistance 0.08Ω～3750Ω Min. operating voltage 4V at 48A Input leakage current 0.003A Voltage 0.01V Setup Resolution Current 0.001A Copyright © Itech Electronic Co., Ltd.
  • Page 182 Remote Sense ≤16V Voltage External programming voltage 0 to 10V current program Corresponding current 0 to 48A External analog （optional） Current 0A to 48A corresponds to external current monitor monitoring voltage 0V to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 183 Time Parallel Number ≤16 Working 0～40℃ Temperature Storage -10℃～70℃ Temperature IP20 Isolation DC to 1600Vdc Isolation AC to 2100Vdc Cooling 483mm*106.9mm*795.3mm (Overall) Dimension (W*H*D) 437mm*88.4mm*767.62mm (Excluding protective cover and side feet) Weight( net) 30kg Copyright © Itech Electronic Co., Ltd.

  • Page 184: M3806-1500-12

    ≤0.03% + 0.03%FS Read Back Current ≤0.1% + 0.1%FS Accuracy Power ≤0.5% + 0.5%FS Voltage ≤30ppm/℃ Setup Temperature Coefficient ≤50ppm/℃ Current Voltage ≤30ppm/℃ Read Back Temper- ature Coefficient ≤50ppm/℃ Current Current slope Rising slope 12A/ms Copyright © Itech Electronic Co., Ltd.
  • Page 185 AC Input Frequency 50/60Hz Max. apparent 6.5kVA power Max. input current 12.5Aac Max. efficiency 93.0% Power Factor 0.99 DC component ≤0.2A Current harmonics ≤3% Standard: USB/LAN/CAN/IO Standard Interface Optional: GPIB/Analog&RS232 Command Re- 0.1ms sponse Time Copyright © Itech Electronic Co., Ltd.

  • Page 186: M3812-1500-24

    Voltage 0～1500V Current 0～24A Power 0～12000W Rated value Resistance 0.25Ω～3750Ω Min. operating voltage 7.5V at 24A Input leakage current 0.003A Voltage 0.01V Current 0.001A Setup Resolution Power Resistance 0.01Ω Read Back Voltage 0.01V Resolution Copyright © Itech Electronic Co., Ltd.
  • Page 187 0V to 10V External analog （optional） External programming voltage 0 to 1500V voltage program Corresponding voltage 0 to 10V Voltage 0 to 1500V corresponds to exter- voltage monitor nal monitoring voltage 0 to 10V Copyright © Itech Electronic Co., Ltd.
  • Page 188 *2: Power limiting may be activated under low input voltage conditions. For in- stance, if the line voltage of a three-phase AC input is 200 Vac, the AC power limit can be calculated as follows: P=200Vac*25Aac*1.732=8660VA. Copyright © Itech Electronic Co., Ltd.

  • Page 189: Supplemental Characteristics

    Technical Specification 6.27 Supplemental Characteristics State storage capacity: 10 sets Recommended calibration frequency: once a year Cooling style: fans Copyright © Itech Electronic Co., Ltd.

  • Page 190: Routine Maintenance

    During self-test, errors may be induced by signals present on ex- ternal wiring, such as long test leads that can act as antennae. 7.2 Cleaning and Maintenance To ensure the safety function and performance of the instrument, please clean and maintain the instrument properly. Copyright © Itech Electronic Co., Ltd.

  • Page 191: Contact Of Itech Engineers

    If there are still some problems, carefully read the Warranty and Limitation of Warranty in the preface of the manual. Confirm that your instrument complies with warranty service conditions. If after your warranty expires, ITECH offers re- pair services at competitive prices.

  • Page 192: Return For Repair

    4006-025-000 for technical support and services. 7.4 Return for Repair If your instrument fails during the warranty period, ITECH will repair or replace it under the terms of your warranty. After your warranty expires, ITECH offers re- pair services at competitive prices. Also you can purchase an extended mainte- nance service contract that exceeds the standard warranty period.
  • Page 193 ITECH recommends that you retain the original shipping carton for return ship- ments and always insure shipments. To ship the unit to ITECH for service or repair: 1. Download the ITECH maintenance service application from our website, complete it and place it in the box with the instrument.

  • Page 194: 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 195: Fuse Replacement

    Twisting or bundling wires will help reduce transient voltage drops. A.2 Fuse Replacement Different models of our company product are supplied with different fuse assem- bly. The way to replace the fuse changes accordingly. The common ways are Copyright © Itech Electronic Co., Ltd.
  • Page 196 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.
  • Page 197 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 198 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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