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PS D1 Phase Failure Relays

Introduction:
It is a compact version of SP D2. It senses the Negative Sequence Voltage components of the system supply & offers protection against Phase Failure, Phase Unbalance, Phase Sequence Reversal. The user can set the unbalance voltage as per field requirements & optimally use the motors. It is useful for monitoring incoming Mains Power Supply for unbalance voltage faults in Motor Control Panels. It is available in DIN Rail mounting enclosure.
Features:
· Monitors 3 Phase Voltage Supply.
· Suitable for any System Voltage
· Manual / Remote /Auto Reset (Selectable)
· Fault Trip Indications (LED’s)
· 2 CO output contacts 2 CO output contacts
· Sleek DIN Rail mounted D1 Enclosure.
Application Areas:
It is useful for monitoring incoming Mains Power Supply for unbalance voltage faults in Motor Control Panels. It is available in DIN Rail mounting enclosure.
Technical Specifications:
Sr.
Parameter
Specifications
1 Supply Voltage System 240 / 380 / 415 V AC ±20%; Auxiliary 110 / 240 / 380 / 415 V AC ±20%
2 Output Contacts 1 CO
3 Trip Setting (Volts) Phase unbalance 30 to 70 V ±6 V (adjustable); Under Voltage N.A.; Over Voltage N.A.; Water Level N.A.
4 Trip Time Delay On Phase Failure/Seq. 3.5 sec. ±1.5 sec.
5 Resetting Mode Auto
6 Weight 320 gms.
7 Dimensions (mm) Overall (L x W x D) 78 x 30.5 x 117.5; Mounting (L x W) 68 centre to centre

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