Description

FT68200 series high performance high-power DC electronic load provides three voltage ranges 150 V/600 V/1200 V, maximum current 2400 A per single unit, stand-alone power from 4 kW to 60 kW, expandable up to 600 kW, 10000A by master-slave paralleling. Ultra-high power density, 6kW is with only 4U height. Wider operating region, faster dynamic frequency, as well as transient mode, OCP/OPP test, sequence test, automatic test and battery discharge test functions greatly enhances its test strength and expands application coverage. Furthermore, two times instantaneous overpower loading capability can effectively reduces user’s test cost. Built-in standard RS232, RS485, LAN, USB (serial), optional GPIB and CAN interface, supports SCPI, ModBus RTU and CANopen protocol, which facilitates system integrators. FT68200 series has full protection functions, which can be applied to power battery discharge, DC charging station, charging piles, charging pile modules, vehicle On Board chargers (OBC), high-power switching power supplies, power electronics and other power electronics products.

Transient test

Modern electronic devices operate at very high speeds and demand rapid transient response characteristics. To address these applications, the series offers high speed, programmable dynamic current loading (CCD). The figure shown below exhibits the programmable parameters such as current high/low level, T1/T2, rise/fall rate. The dynamic loading supports continuous, pulse, and toggle modes. When configured as pulse or toggle mode, the load accepts a trigger signal via front panel, external input, or bus, which allow the dynamic load behavior to be synchronized with other events. The dynamic change is up to 50kHz.

Static test

In addition to the basic test modes of CC, CV, CR, CP, the series load provides users with CV+CC, CP+CC and CR+CC complex modes to meet comprehensive test requirements (complex modes are unavailable for suffix “E” models such as FT68206E).

Programmable sequence test

All models provides a programmable sequence function to simulate various load input changes. The sequence feature allows users to program a list of steps to the electronic load’s internal memory and execute them. Sequence operates in CCH mode, with max. current slew rate by default. A total of 100 steps can be allocated to each internal memory location, up to a maximum of 20 locations (sequences). The test sequence can be programmed locally through the keypad and knob. Each steps’ settings include load value, duration time (100 us ~ 99999 s). Sequence files runs continuously, can be linked to specified sequences, or run for a specified cycles.

30kHz dynamic frequency sweep, V_{peak (+/-)} capture

The FT68200 series load offers a unique dynamic frequency sweep function with variable frequencies up to 30kHz. This capability is ideal for determining worst case voltage peaks. Measurement of the V_{peak (+/-)} can be achieved using this function with a sampling rate of 500kHz. It can effectively test the dynamic response of various power supplies at different frequencies.

1kHz data transmission rate

The series provides a data transmission rate of up to 1kHz, that is, 1000 voltage and current data points per second, which facilitates applications such as waveform drawing and dynamic data analysis. In system integration applications, the host computer can use this feature for acquiring test data, avoiding the use of oscilloscope and high-speed current acquisition hardware, thus saves costs.

Instantaneous overpower loading capability

All models has an instantaneous load capacity of 2 times the rated power (time range: 5s). This greatly saves costs for instantaneous high-power testing environment. This function is suitable for testing situations such as DC motor start, power supply instantaneous overload, power battery instantaneous high-rate discharge, instantaneous load capacity test of power electronic devices, etc..

Time measurement

All models provide the measurement of rising and falling time of input voltage, current or external level signal. It can be applied to measure the turn on and off time, holding time, rising edge and falling edge time of power supplies. It can also measure the fuse blowing time and circuit breaker response time. The measurement time range is 0.1 ms ~ 20 h, and the resolution is 0.1 ms.

OCP/OPP test

All models provides OCP and OPP test feature, which enables the user to set current or power orders to test overcurrent or overpower protections, also to judge the test result as Pass or Fail on electronic load. The maximum current (I_max) or maximum power (P_max) during testing can be captured and showed on the display without using an oscilloscope to verify the correctness of designed overcurrent and overpower. It can save a lot of testing time for the user.

Automatic test

The principle of the automatic test function is: the load executes the test steps in programmed order according to the automatic test file. In each test step, the load is loaded in specified mode (CC , CV, CR, CP) for a period of time, in the mean time the voltage, current and power are checked to see if they are within the specified range. After running all the test steps, the final result PASS or FAIL is given. In addition, in automatic test the load can accept a trigger signal via front panel, external input, or bus, which allow the test behavior to be synchronized with other events also. FT68200 series load can store up to 50 automatic test files, and each file with up to 20 test steps.

Battery discharge test

The series uses the DC discharge method (DCR) to test the battery internal resistance and capacity. It provides three discharge modes: CC, CR and CP. Users can set the cut-off voltage/time/AH, discharge process shall terminate either condition is satisfied. The load will record the AH, WH and discharge time during the discharge process. This discharge test feature can also apply to super capacitor discharge test.

Voltage-on (Von) & voltage-off (Voff) operation

In static mode (CC, CV, CP and CP) operation, users are able to control the input turn on/off state for the DC electronic load by configuring the Von/Voff function.

Protective features

For protection of the equipment connected, the load provide programmable protection functions such as OVP, OCP, OPP and LVP. Moreover, there are built-in hardware protection functions OV, OC, OP and OTP. If a protection is triggered, the load will be shut off immediately and a status signal will be prompt on the display

External analog programming and monitoring

In addition to front panel and remote interface control, current values can also be programmed from 0...100% with an analog control signal of 0 V...10 V (available in CCH mode only). To monitor the input current, there are analog outputs with 0 V...10 V. The current programming and monitoring accuracy is 0.5%+0.5%F.S.

1kHz sine wave                                                                                        5kHz sine wave

Digital interfaces

In addition to the local controls through full keypad rotary knob, there are standard remote control interfaces such as standard RS232, RS485, LAN, USB (serial), optional GPIB and CAN interfaces. USB, RS232 and LAN can be used to control and monitor the devices either with SCPI language commands or ModBus RTU protocol, while with GPIB only SCPI is supported, with CAN only CANopen supported.

Master-slave parallel

All models provides the user with smart Master-Slave parallel controls, which enables the user to program the load currents of the Master unit and have them automatically calculated and distributed to the slave loads. For increased power and current, up to 10 identical loads can be run in parallel to achieve the desired power and load current. Using several loads in parallel to simulate a single load dramatically simplifies the operation.

Optional control software

The series provide a control software for Windows PCs, which can read test data, generate images, export reports, print reports, etc. in real time, it is convenient for customers to use.

Options

FT68201A/E graphical visualization control software FaithLoad;

AC load rectifier accessories;

Optional digital interfaces such as GPIB, CAN;

Parallel cable (1 Meter)