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Products I Monitoring Relays I D2 EFR1

  Earth fault/Ground fault monitoring of 3 phase systems, Manual Reset,
  Input 1A or 5A through CBCT,
  Adjustable earth fault trip setting,
  Adjustable trip delay,
  2 CO relay output
Supply Voltage
  System : 24-30 VDC / 100-120 / 220-240 / 380-440 V AC ±20%
  Auxillary :  -

Ext. Input : 1A or 5A (Selectable) CBCT

Output Contacts : 1 CO (2 CO) (Pick up on Fault)

Trip Setting    
  EF Trip Setting : 10% -100% (adjustable) of CT sec
  Under Current : N.A.
  Over Current : N.A.

Power On Delay : N.A.

Trip Time Delay : 0.1-1.0 / 1-10 Sec. (Adjustable)

Resetting : Manual / Remote (Selectable)

Weight : 550 gms.

Dimensions (mm)    
  Overall (L x W x D) : 76 x 56.5 x 117.5
  Mounting (L x W) : 67 x 46 / 35 mm rail Mounting

Wherever not specified Contact Rating : 5A @ 230 V AC (resistive)
Timing/ Relay logic Diagram

Electrical Connection Diagram


Relay contact position shown in 'Power off' condition
Suitable for following application:
Generator panels
Synchronizing Control Panels
AMF Panels, MCC panels
Air Circuit Breakers (With shunt Trip Coil)
MCCB (With Shunt Trip Coil)
Motor Control Panels


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