20Hz–50Hz Variable Frequency Power Supply

This product series (20Hz–50Hz variable frequency power supply) utilizes our company’s unique patented technology and employs high-frequency power electronic switching conversion technology to produce medium-frequency static variable frequency power supplies specifically designed for aviation and military electronic and electrical equipment. These power supplies are suitable for aircraft and airborne systems, radar, navigation systems, other military electronic devices requiring a 20Hz–50Hz medium-frequency power supply, as well as various other applications; they represent the next-generation replacement for modular variable frequency power supplies. These units are compatible with both balanced and arbitrary unbalanced three-phase loads, and can also be used as single-phase power supplies. They are capable of accommodating various types of loads—such as resistive, capacitive, and inductive loads—as well as all types of hybrid loads.

Get a Quick Quote Whatsapp

Category: AC Power Supply Series

Product Features

Utilizes a dedicated SPWM chip, offering high control accuracy, excellent waveform quality, and compatibility with various loads.
IPM high-frequency static inverter: compact size, lightweight, low noise, high efficiency, and minimal susceptibility to external interference.
Microprocessor-controlled: output voltage and frequency are adjustable online; both operating and fault states are clearly visible at a glance.
Suitable for both three-phase balanced loads and any unbalanced loads; it can also be used as a single-phase power supply.
The operation features a digital LED display panel that is flexible and convenient to use, making it easier for you to operate with ease.
Can be used standalone or mounted in a 19-inch standard cabinet.

Execution Standard: “Q/AK004-2001 Technical Specifications for Static Variable Frequency Power Supplies”

Technical Parameters

capacity		500VA -10KVA	10KVA-100KVA
import	number of phases	uniphase	three-phase
	rated voltage	220V	380V
	voltage range	198V～242V	342～418V
	frequency	50Hz±5％
output	number of phases	uniphase	Three-phase four-wire system
	rated voltage	115V	200V/115V
	Voltage regulation range	10V～150V	17V～260V
	Voltage regulation accuracy	≤±1% FS (Note: FS stands for Full Scale)
	Voltage regulation resolution	0.1V
	Voltage modulation	＜2.5V（rms）
	Voltage unbalance	1V
	rated frequency	20-50Hz
	Frequency setting range	20-60Hz
	Frequency stability accuracy	±0.01％FS
	Frequency adjustment resolution	0.1Hz
	Dynamic Characteristics	The overshoot magnitude and settling time comply with GJB572 requirements.
	AC distortion coefficient	Sine wave, THD <2% (linear load test)
	Voltage crest factor	1.414±0.05
	phase difference	1/3 unbalanced load: 120° ± 2°; fully unbalanced load: 120° ± 3°
	power factor	0.8
	Adaptation load	No restrictions; suitable for derating applications with nonlinear loads such as capacitive and inductive loads.
	overload capacity	125% current, 5s
	Source adjustment rate	±1%FS
	load regulation	±1%FS
show	Operation Display	Button-operated; LED display
	Voltage display accuracy	±1％FS
	Current display accuracy	±2％FS
	Frequency display accuracy	±0.1％FS
protect	class	Input overvoltage or undervoltage; output overvoltage, overcurrent, or phase loss; internal overheating
reliability	MTBF	1.0×105h
	MTTR	0.5h
synthesize characteristic	productiveness	＞80％
	noise	＜55dB
	Line connection method	Backside power input/output lines
	cooling-down method	forced air cooling
	Air intake and exhaust	Front-inlet, rear-outlet airflow configuration
	levels of protection	IP20
environment	Operating temperature (storage temperature)	-5℃～40℃(-15℃～50℃)
	humidity	≤90%
	above sea level	≤2000m