Power series
ZELVRT Power Device for Low Voltage Ride Through of Variable Frequency Drive(VFD)
Function
When grid voltage drop occurs, booster work ZELVRT device to start the BOOST circuit, stable inverter dc bus voltage dc. When grid voltage return to normal device standby, electricity through communication lines to the inverter power, original ZELVRT device in a state of the bypass.
The main features
Support for multiple frequency converter connection mode ZELVRT devices.
ZELVRT device
adopts the bypass type dc method, dc side with a defence of the diode, equipment abnormal does not interfere with normal operation of converter;
ZELVRT device has periodic self-inspection and artificial triggering self-check function, test equipment itself state may at any time.
