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3 PHASE UNDER VOLTAGE CONTROL RELAY with PHASE SEQUENCE DETECTION
download pdf file The 3 phase 4 wire voltage relays are designed for applications where the three phases need to be individually monitored for under voltage against neutral and correct phase sequence. The PNDA and PNDI offers a true time delay on drop out even at total power failure. The relay works in "fail safe"mode and need no external power supply.
3-PHASES EQUENCE CONTROL & PHASE MONITORING RELAY
download pdf file The PARA & PAHI are 3 wire relays for sequence control and phase monitoring. The PAHI includes a true time delay.The PAMA & PAMI are 4 wire relays for sequence control and phase and neutral monitoring. The PAMI includes a true time delay.
3 PHASE VOLTAGE CONTROL RELAY
download pdf file The phase failure relays are designed for application where a three-phase system needs to be monitored for unbalance or deviation in balanced voltage. The relays includes a standard timing function. In addition the PADI and PANI offers a true time delay on drop out even at total power failure. The relay works in "fail safe"mode and need no external power supply. If an external stable power supply is available the 45mm housing offers seperate terminals for internal power.
