Buchholz Relay

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Buchholz Relay

Model : BR-3 as per IS-3637

The Buchholz Relay is used as a protective device sensitive to the effects of dielectric failure inside the transformer.

Key features

  • Multiple switch options max 4 normally open or changeover.
  • Magnetic reed switch operation which has ability to withstand power frequency vibrations.
  • Two oil resistant Nitrophyl NBR floats suitable to work in extreme conditions.
  • Electric circuit test device is offered to check the continuity of alarm & trip circuit.
  • Large IP rated terminal box for easy wiring connections.
  • Two glass inspection windows to check the volume of gas & the oil level.

Technical details

1. Alarm gas volume range

  • 200 to 300 CC

2. Trip surge value

  • 90 to 160 cm/sec

3. Contact type

  • MA - 1 Alarm + 1 Trip (Normally Open)
  • ML – 1 Alarm + 1 Trip (Changeover)
  • MG - 1 Alarm + 2 Trip (Normally Open)
  • S4 – 2 Alarm + 2 Trip ( Normally Open)

4. Spares & Accessories

  • Plug & socket.
  • Armored Cable.
  • Copper tube.
  • Flexible hose pipe.

5. General info

  • IP-67 ingress protection.
  • C4-M & C5-M paint protection.

Note: For more details send online enquiry

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Buchholz Relay

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