APM is committed to exploring advanced technology and application in T&Mfield as well aspromoting iteration and innovation of products.
Recently, APM upgrades EL series DC load which add 4U/8.1KW model with Ultra high power density compared with other brands. It contains 200V, 600V and 1200V three output voltage range. Power range of single unit covers from 600W to 27.9kW. Current range of single unit could reach to 2880A. It is extendable to 558kW via parallel connection. Supports CV, CC, CR and CP basic operating modes, as well as CV+CC, CV+CR, CR+CC complex operating modes. It contains multiple protection function. Built-in RS232.RS485.USB.LAN&GPIB communication interface. It is wide applicable to automotive electronics, battery charge and discharge, DC charging pile, power electronics and other field.
Main characteristic
- Ultra high power density
- Flippable front panel and color touch screen
- 50kHz high-speed CC/CR dynamic mode
- 500kHz high-speed voltage and current sampling rate
- Supports external analog control function
- Ultra high precision voltage & current measurement
- Adjustable current slew rate, adjustable CV loop speed
- Auto mode
- Short circuit test mode
- OCP/OPP testing function
- Battery charge test function
- V-monitor/I-monitor
- Dynamic frequency sweep function to simulate different test situation
- Non linear load mode function makes the simulated loading current more realistic
- Full protection: OCP, OPP, OTP, over voltage and reverse alarm
Function and strength
Small Size, High Power Density
Adopt high power density design, provide 8.1KW within 4U rack.
Wide Input Voltage Range And High Input Power Range
Provide customer wide range of input voltage and input power for selection. Requirements of High current, low voltage or high voltage, low current and stable input are all satisfied. When voltage is up to 1000V,it could still have stable and full power rangeinput.
Multiple Operating Mode
This series programmable DC electronic load provides four kinds of basic operating mode including CV (constant voltage), CC (constant current), CR (constant resistance), CP (constant power), to satisfy a wide range of test requirements.
Auto Mode
This mode allows automatically switches among CV, CR, CC and CP modes. It is suitable for lithium ion battery charger testing to get a complete V-I charging curve. This flexible auto mode also enormously improves test efficiency.
RLC
Simulate capacitive load which make input current much closer to actual situation. It is mainly applied in simulating power start-up and shutdown test of capacitive load.In order toavoid charging to the capacitor on the main board at the moment of power start-up which may trigger OCP due to surge current and make power source not be able to startsmoothly.
50kHz High-speed CC/CR Dynamic Mode
This series electronic load can be switched quickly between different values in the same operating mode, including CC dynamic mode, CV dynamic mode, CR dynamic mode and CP dynamic mode, CC/CR high speed dynamic mode up to 50kHz. This function is suitable for transient test of Power Supply, test of battery protection characteristic and battery pulse charging etc. Dynamic mode test has continuous mode, pulse mode and toggle mode. 
Dynamic Frequency Sweep Function
This series electronic load provides a unique constant current dynamic sweep to use frequency conversion to find out the UUT voltage of worst case.This CC dynamic sweep allows the user to edit two load levels, start frequency, end frequency, step frequency, dwell etc.The sampling rate is up to 500kHz, which make it can simulate different loading conditions for most test requirements.
Battery Discharge Test
This series electronic load has battery discharge function, and can perform discharge test under CC, CR or CP mode. The DC load can set end voltage or time to stop loading correctly and make sure the battery is not damaged due to over discharge. The user can set stop conditions, whenever met any condition, the load will stop loading and counting automatically. During the test, users can observe battery's voltage, discharging time and already-discharged-capacity.
Sine Wave Dynamic Load
This series electronic load supports sine wave loading function which allows to load sine wave, can be used for impedance analysis test of fuel cells.
MPPT
It is mainly applied in tracking the most power point of solar panel. Through this way, it could continuously and dynamically trackthe most power point of solar panel which could maximize the effect of solar panel.
OCP/OPP Tests
This series electronic load provides OCP and OPP modes to be applied in over-current and over-power protection tests. After the testing the load can automatically judge the test result according to the set specifications. Take OPP testing as example, the OPP provides ramped up power for the load to test the UUT voltage whether has reached trigger voltage level and to judge if the protection is acting normally or not.
List Mode
The list function allows user to create waveform files to automatically simulate various complicated loading conditions. The list mode has 10 files, by editing operating mode (including CC, CV, CR,CP, Short and ON/OFF), repeat times, total steps, setting value of each step and step time etc. This function can be applied to the testing of output characteristic and stability for power supply.
Master/Slave Control
This series electronic load provides the user with Master/slave mode, supports parallel connection under different power and same voltage and dynamically synchronized. In Master/slave mode, the user only need to control the master one, the load current will be automatically calculated and downloaded to the slave loads. The Master/slave mode greatly simplifies the operation when increased power is needed.
New Model
