| Introduction: | | It is a Negative Sequence Voltage Sensing Phase Failure Relay with Under & Over Voltage Relay. It is best suitable for protection of unbalanced 3 phase loads or for monitoring 3 phase supply of UPS or Invertor. It offers protection against Phase Failure, Phase Unbalance, Phase Sequence Reversal, Under Voltage & Over Voltage faults. It is useful for incoming side, Mains Supply monitoring, General voltage faults, AMF/Transfer Switch Panels & Pump Control Panels. It is available in DIN Rail mounting enclosure. |
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| Features: | · Under & Over Voltage (Adjustable).
· Monitors Aux.Voltage for Under & Over Voltage.
· Monitors all 3 phases Voltage for severe unbalanced & phase loss.
· Selectable Aux.Voltage.
· Auto Reset.
· Sleek DIN Rail mounted enclosure.
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| Application Areas: | | Measures 3-Phase supply for Unbalance Voltage, Loss of Phase, Phase Sequence, Under Voltage & Over Voltage. Best suitable for balance 3 phase loads or motor loads only. Phase failure &UV/OV Relays can be best used for a host of Auxiliary Systems & Plant control panels & machinery. |
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| Technical Specifications: |
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| | Specifications | | 1 | Supply Voltage | System 240 / 380 / 415 / 440 V AC ±20%; Auxiliary 220 / 230 / 240 / 380 / 415 / 440 V AC ±20% | | 2 | Output Contacts | 1 CO (2 CO) | | 3 | Trip Setting (Volts) | Phase unbalance 40 V ±6 V (fixed); Under Voltage 80% to 95% (adjustable); Over Voltage 105% to 120% (adjustable); Water Level N.A. | | 4 | Trip Time Delay | On Phase Failure 3.5 secs. ± 1.5 sec; On UV/OV Less than 2 secs. | | 5 | Resetting Mode | Auto | | 6 | Weight | 400 gms. | | 7 | Dimensions (mm) | Overall (L x W x D) 76x 56.5 x 117.5; Mounting (L x W) 67 x 46 |
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