Autexun DC screen charging module ATC115M20III high-frequency rectifier brand new and original sales

Module model: ATC115M20III

Main features of the module:

Adopting full range soft switching technology, high efficiency, low no-load power consumption, and small size.

The AC input has a built-in safety compliant fuse.

Measures to achieve hot swapping. Other similar products without built-in diodes require users to add additional diode heat sinks to the DC screen, resulting in cumbersome wiring.

Using a "three-phase passive power factor correction circuit", the input has no neutral line, and the power factor can reach 0.94.

Isolated and autonomous current sharing is adopted, and the uneven current degree of parallel operation is ＜ ± 3%, which can ensure good parallel operation of more than 20 modules.

The module has an RS-485 interface for easy access to automation systems for communication** Output overvoltage protection: Built-in overvoltage protection circuit, the module automatically locks up after overvoltage occurs, the module fault indicator lights up, and the faulty module automatically exits operation without affecting the entire system. 160V ± 5% * * Output current limiting protection: The maximum output current of each module is limited to 1.05 times the rated output current.

Short circuit protection: The retractable droop current limiting method is adopted. When the output short circuit occurs, the module momentarily pulls the output voltage down to zero, limiting the short circuit current to less than 15% of the rated output current. The module can operate in a short circuit state for a long time without damage. After troubleshooting, the module can automatically resume operation.

Module parallel protection: There is a parallel protection circuit inside the module, which automatically exits the system in case of a fault, without affecting the normal operation of other modules (* * Over temperature protection: The module automatically shuts down for protection when it detects that the radiator temperature exceeds about 85 ℃, and the module automatically starts when the temperature decreases.

Main technical parameters:

Input voltage: 323-475V, three-phase three-wire system

Power factor: ≥ 0.92

Module efficiency: ≥ 94%

Output DC voltage: 198-286V DC/220V

99~143V DC/110V

Large output current: 110% of rated output current

Output current limiting characteristic: 0~rated current adjustable

Voltage stabilization accuracy: ≤± 0.5%

Usage environment:

Work below an altitude of 2000 meters. The operating environment temperature range of the equipment is - 10 ℃~+40 ℃, the environment is not dewy, and the storage environment temperature range is - 40 ℃~+60 ℃. The ambient relative humidity shall not exceed 90% (ambient temperature 25 ℃). The operation site is free of conductive dust, corrosive metals, and gases or vapors that damage insulation. For indoor use.

Precautions for module use:

Module current sharing refers to modules connected to the same bus that output the same current to share the load. The module has undergone strict current sharing debugging before leaving the factory. When the module operates in automatic control mode and any module is set to the same output voltage, no current sharing adjustment is required, and the module does not provide external adjustment devices. When there is a bus control module in the system, only communication cables can be connected between the bus control module and the charging module, and current sharing cables cannot be connected. In any case, only communication cables are connected between the module and the monitoring. If severe current imbalance is found between modules, use the following troubleshooting methods to replace the faulty module. The method to confirm whether the current sharing module is damaged is as follows: First, check whether the current sharing bus is connected properly, whether the current sharing line is connected correctly, and whether the charging module is in automatic operation status one by one. If all are normal, follow the steps below to find the faulty module. 1. Completely disconnect the current sharing cable and communication cable of the module, and turn on a charging module separately. After the charging module is turned on, apply a rated current of 1/2 of the rated load to the charging module. Use the DC voltage range of a multimeter to measure the voltage between the positive and negative current sharing buses of the charging module. Normally, it should be around 2V. Under load, short circuit JL+/JL, and the module output voltage will drop by 7-17V. 4. Check the current sharing bus voltage of each charging module under load condition one by one. If there is any voltage, it is normal. If there is no such voltage measured under load condition, the current sharing circuit of the charging module has been damaged. Secondly, if the bus control module is not current sharing, and the voltage between the positive and negative current sharing buses measured using the above method is normal, it is necessary to consider whether the manually adjusted voltage is inconsistent. At this time, follow the steps below to find the faulty module. 1. Completely disconnect the current sharing cable and communication cable of the module, and turn on a charging module separately. After the charging module is turned on, apply a rated current of 10% to 15% of the rated load to the charging module. Use the DC voltage range of a multimeter to measure the voltage between the positive and negative output buses of the charging module. Check the output bus voltage of each charging module under load condition one by one, and compare whether the output voltages of all modules are consistent. If yes, readjust the output voltages of all modules to ensure that they are consistent.