technological parameter of this one：
1、Capacity： 400KVA
2、Input：
Voltage： AC200V-490V Frequency：30-80HZ
Phase：Three-phase four-wire system
3、Output：
Voltage： AC380V±1% Frequency： 50/60/400 Hz
Phase：Three-phase four-wire system
Voltage Stability： ≤ 0.1 %
Frequency Stability：≤ 0.01 %
wave shape distortion：≤ 2 %
4.Over load capacity : with high over load capacity ,the transition current can endure two times rated current .
5. Protection：Output Circuit Breaker, Electronic Circuits Instant Trip for Over Voltage, Over Load, Over Temperature, Short Circuit Protection and Alarm System
6. working environment：
working temperature：-10℃～45℃
relative humidity：≤90％（25℃）
7. method of operation display：display Voltage（V）、Frequency（Hz）、Current（A）and Wattmeter（W）
8.the apply load :without limited .suit complete unbalance load ,but the motor and Inductance load must reduced the value apply
