PT420
DUAL INTERVAL STAR-DELTA TIMER RELAY
The device is used for controlling the start up of high-power motors, ensuring smooth transition between star and delta connection.
The device is used for controlling the start up of high-power motors, ensuring smooth transition between star and delta connection.
It is installed in an electrical panel on a standard relay socket.
Apart from the basic delay time before switching from star to delta, an intermediate transition time can be adjusted, in order to avoid the electromagnetic coupling of the two relays and their simultaneous activation.
- power supply
230V AC / 50Hz
- relay outputs
Two independent one changeover contact relays, 10Α / 250V AC cat. AC1
- indications
POWER ON and RELAY ON
- connection socket
Bulb type, 8p or 11p
- protection
Varistor (against overvoltage and lightning)
- operation temperature
-20 to +50 C
- delay time range
3 - 30 sec
- transition time range
20-300 msec
- enclosure
Plastic box / 42x89x94mm / IP41