Home page

28V 800A Isolated Adjustable Power Supply

The module is a flexible, modular power quality product designed for harmonic suppression, power factor correction, and three-phase balance.

Rated capacity: 30A/50A/75A/100A/150A/200A
Rated input: 200/400/480/690/800V AC
Grid frequency: 50/60 Hz ± 10%
Filter range: 2 to 50 orders
Installation types: wall-mounted, rack-mounted, upright
Power grid configuration: 3P3W, 3P4W

Service Hotline: +86-10-81799630

Email: Liry_chinnovo@126.com

Category:

Specialty Power Supplies (DC-DC/DC-AC/PCS)

Keywords:

Leave a message for inquiry

Product Description

Product Overview

The power supply’s input is 380 VAC mains power, which is rectified into a stable 650 VDC through an active, controllable rectifier unit provided by the PCS module. The 650 VDC is then stepped down via a downstream bidirectional DC/DC converter module, resulting in a stable DC output voltage. The adjustable range of the DC output voltage is from 5 VDC to 34 VDC.

Rated power: 22 kW
Rated voltage: 28Vdc
AC-side voltage range: Three-phase 380 VAC

Principle Topology

Principle Topology Diagram of a DC Adjustable Power Supply

Technical Specifications

Serial number	Indicator Item		Design metrics
1	Performance	Rated output power	22kW
1		Maximum output power	28kW
2		Rated output voltage	28V DC
3		Rated output current	800A
4		Adjustable output voltage range	5–28V
5		Output current adjustment range	10–800A
6		Output voltage regulation accuracy	±1V
7		Output voltage regulation accuracy	±2V
8		Output current constant-current accuracy	±1A
9		Rated input frequency	50 Hz ± 0.5%
10		Input power factor	≥0.95
11		Rated output voltage	DC28V
12		Control function	Constant voltage and constant current control
13		Protection function	Input undervoltage, overvoltage, output overcurrent, overtemperature current limiting, overtemperature protection, drive protection, and more.
14		Electrical protection performance	The input and output terminals of the power supply unit are equipped with fast-blow fuse protection devices.
15		Control method	Local control + remote control (Modbus or Modbus TCP/IP)
16		Cooling method	Forced air cooling
17		External dimensions	Dimensions no greater than 800mm × 864mm × 1100mm (width × height × depth)
18		Weight	≤ 500 kg

External dimensions (optional)

Product Features

The front-end power supply employs PCS active controlled rectification to address the power factor and low harmonic requirements of the power supply.
The DC/DC converter module employs IGBT phase-shift parallel operation, resulting in low overall current ripple and a waveform that closely approximates pure DC. This reduces harmonic distortion in the output current, thereby enhancing the performance and quality of the power supply.
The power supply can handle sudden load increases and decreases, with a fast dynamic response.
Equipped with an LCD screen that displays the operating status, fault warnings, and fault location in real time.
Supports multiple communication protocols (CAN, RS485, ModBus)