Switch for 28.5V DC power supply

Product Features

The power semiconductor devices utilize a new-generation IGBT, leveraging the high-frequency, low-loss characteristics of the IGBT’s switching operation mode to perform electrical energy conversion; these devices feature a compact size, light weight, high efficiency, and excellent reliability.
The current-mode control employs a full-bridge converter topology, PWM control, and slope compensation technology; it eliminates the need for a series anti-commutation capacitor, offering advantages such as fast dynamic response, strong resistance to impact loads, and reliable overcurrent protection.
The LED panel displays power supply operating parameters and operational status; it features a self-diagnostic function that can store recently occurred faults, thereby enhancing maintainability.
All functional units and components are designed with a modular architecture; by cascading these components for scalability, they offer a compact size, high efficiency, excellent reliability, and superior maintainability.
Suitable applications: Engine startup, motor testing
Product advantages: compact size, lightweight, low cost, and high impact resistance.
Product drawbacks: The output ripple of the linear power supply is relatively high.

output		200A	400A	800A	1000A	1500A	2000A
Circuit configuration		High-frequency switching type
import	number of phases	Three-phase three-wire or three-phase four-wire system
	voltage	220V/380V±15%
	frequency	50Hz/60Hz±10%
output	voltage	28 VDC ±10% adjustable (25.2 VDC–30.8 VDC)
	Flow rate regulation	Adjustable range: 30–100%
	voltage stability	≤1%		≤2%
	Current	200A	400A	800A	1000A	1500A	2000A
	ripple voltage	≤3%
	voltmeter	3½-digit digital display (28.0 V) or 4½-digit digital display (28.00 V)
	ammeter	3½-digit or 4½-digit digital display
Long-distance compensation function		Features long-distance voltage compensation functionality (0–2 V)
load characteristic		Suitable for various loads
protect		Features overvoltage (32–35 V), overcurrent, overtemperature protection, and short-circuit protection (for three-phase input with phase loss protection).
cooling		Fan forced cooling
work environment		Temperature: -10°C to +45°C; Humidity: 0% to 90% (non-condensing condition); Continuous operation; Dust protection (against carbon brush powder and general dust).
noise		≤55dB
withstand voltage		Input: For the AC1500V/1-minute test, no arc flash or breakdown phenomenon was observed (current threshold: 10 mA).
Insulating reactance		Output to the enclosure: ≥10 MW (using a 500 V megohmmeter)
structural style		Cabinet-type