Energy Recovery DC Electronic Load Model 63700 Series

The 63700 Series Energy Recovery DC Electronic Load is suitable for product reliability testing of electric vehicle battery discharge, fuel cell discharge, high power power supply aging, DC charging piles, one-way vehicle charger reliability, fuel cell engine systems, energy storage systems, AC/DC and DC/DC power supplies, power electronic components, and power electronic components.

The Energy Recovery DC Electronic Load can simulate a wide range of load characteristics and return power to the grid. It can significantly lower the temperature of the indoor test environment, reducing the large amount of power used by air conditioners to lower the ambient temperature, and saving the user the cost of power conversion, while meeting the needs of energy saving and environmental protection.

The 63700 series adopts a high power density design, with a volume of 3U high, the power can be as high as 18kW, the maximum current of a single unit is 540A, and by connecting 10 units in parallel*, the maximum power can be as high as 180kW, and the maximum current can be up to 1,200A. Voltage is available in three ranges, namely 100V, 600V, 1,200V, and 1,800V.

All models in the series are equipped with an external voltage signal to control the load current function*, which can simulate the real current waveform; master/slave control allows the same model of the 63700 series to be used in parallel, and synchronized dynamic pulling loads can be achieved. In addition, a total of 256 sets of storage functions* are provided, and the user's stored settings can be called up at any time. In automated testing, this storage and call function reduces test time.

In terms of measurement, the 63700 series can instantly and accurately measure voltage and current. The 63700 series can be easily operated and set up through the front panel TFT touch display and knob, and can also be remotely controlled through LAN, USB, GPIB and CAN interfaces.

With over-current, over-power, over-temperature protection and over-voltage alarm mechanism, the 63700 series can greatly improve product reliability and is a reliable product for engineering test and automatic test system integration.

The Chroma 63700 Series Energy Recovery Electronic Load has an energy recovery efficiency of up to 93%, in addition to high power density, effective size reduction and space saving advantages. It is suitable for automotive DC chargers, unidirectional car chargers, automotive battery dischargers, fuel cell dischargers, etc. and various power supply applications for long time reliability testing. The 63700 series is suitable for applications in the power range of 5kW~180kW by paralleling up to 180kW.

* :: Battery discharge test requires external protective fixtures

The main differences between energy recovery electronic loads, linear electronic loads and resistors are the way they consume energy, the size of the current ripple, the slope of the current, the power density, etc. The main advantage of energy recovery electronic loads is that they can recycle the energy consumed into the power grid and help reduce energy waste and carbon emissions. The main advantage of energy recovery electronic loads is that they can recycle the consumed energy back to the power grid, which reduces energy waste and helps to reduce carbon emissions; the advantage of linear electronic loads is that the current ripple is small and the current slope is fast; and the advantage of resistors is that they have the fastest response time, but they are large in size and consume the least amount of energy, and have the lowest power density. Users can choose the applicable load for testing according to their needs. Overall, energy recovery electronic loads are suitable for power supply durability testing, reliability testing, burn-in testing and battery discharge testing, etc., which can effectively reduce the ambient temperature and minimize the cost of electricity.

The 63700 Series Energy Recovery DC Electronic Load converts the loaded power to AC current and then feeds it back into the power grid, with an efficiency of up to 93%, which can be reused by other equipment in the plant, saving overall power consumption and carbon emissions and reducing the impact on the environment, as well as effectively reducing the heat generated by the electronic load due to load pulling and at the same time reducing the energy consumption of air-conditioning. It also effectively reduces the heat generated by electronic loads due to load pulling, and at the same time reduces the energy consumption of air-conditioners, reducing the cost of electricity.

Chroma 63700 series high power programmable energy recovery electronic loads are equipped with digital signal microprocessor with excellent speed and control performance. Voltage (0.05%+0.05%F.S.) and current (0.1%+0.1%F.S.) can be measured with high precision to ensure the accuracy of the measurement, and the whole series of mainframe models can be manually operated and remotely controlled. When users have higher power testing needs, master-slave control can be set to achieve multiple parallel operation, and has the ability to synchronize the pull load to simulate the actual pull load conditions.

The 63700 series has constant voltage, constant current, constant resistance, and constant power modes of operation to meet a wide range of test requirements. For example, Constant Current and Constant Resistance modes can be used for voltage source DUT testing to verify that the output voltage of the DUT maintains a stable output under different load conditions. For on-board charger (OBC), battery charger or charging post testing, when the charger is running at constant current, the 63700 can use constant voltage mode to simulate the voltage variations of the battery being charged to ensure that the charger's charging current is correct at the set output voltage. When the object to be tested is a battery, the electronic load can be set to discharge the battery in Constant Current or Constant Power modes. Many battery discharge applications, power consumption and other conditions can be tested by the electronic load in these two modes for battery testing.

The 63700 Energy Recovery Electronic Load provides a hibernation mode, and the user can set the hibernation time by himself. When the electronic load is in standby mode without any operation and the time has reached the set standby time, the 63700 will turn off the main power supply (e.g., module power supply), keep the system power supply, and enter into the hibernation mode. When the electronic load enters the hibernation mode, it can save up to 75% of power.

Users can wake up the 63700 in 3 ways:

1. touchscreen
2. Press the front panel ON button
3. remote give command

The 63700 is equipped with an energy recovery function. In terms of external protection mechanisms, when the 63700 detects input AC voltage overvoltage (OV) or undervoltage (UV), frequency abnormality (Freq. Error), three-phase unbalance (Unbalance), overcurrent (OC), it will shut down the module power supply to ensure the safe use of the grid. Error), three-phase unbalance (Unbalance), and overcurrent (OC), the 63700 will shut down the module power supply to ensure the safe use of grid connection. In addition, the internal protection mechanisms of 63700 include Over Voltage Alarm (OVA), Over Current Protection (OCP), Over Power Protection (OPP), Over Temperature Protection (OTP), Under Voltage Protection (UVP), etc. Once the internal protection mechanisms are triggered, 63700 will stop pulling load.

The 63700 Energy Recovery Electronic Load is designed for global AC input range, with three-phase 200~220Vac and 380~480Vac inputs, so that users do not have to consider whether they can be transferred to other regions for power supply configurations.

The 63700 Energy Recovery Electronic Load supports a variety of communication interfaces. Users can connect to the PC for control via the standard USB, LAN and optional GPIB interfaces, in addition to the automotive industry's commonly used CAN interface, which complies with the CAN2.0 A&B specification 11-bit/29-bit, and can read V/I/P parameters at a high speed of 10ms.

In addition to controlling the module loads from the front panel, the user can also control them through the graphical operation software. The user-friendly graphical operation software interface includes stand-alone operation functions, making it easy for users to get started and easy to operate. The 63700 series is equipped with a variety of communication interfaces, such as GPIB, USB and LAN, allowing users to choose the interface to communicate with the computer more flexibly.