MRA PRO V2

Features:



Trip Circuit Supervision Relay

Detection and alarm of trip circuit supply failure and circuit breaker tripping mechanism failure such as loss of voltage, trip circuit connection, contact degeneration in wires, contacts and coils.

Application : Supervision of Tripping Circuit of HT VCB.

Categories: ,

Description

MRA-Pro-V2 supervision relay is a advance numeric relay that provides circuit breaker coil supervision.

KEY FEATURES
  • Continuous Trip circuit supervision of both pre closing and post closing conditions in circuit breaker.
  • Detection and alarm of trip circuit supply failure and circuit breaker tripping mechanism failure such as loss of voltage, trip circuit connection, contact degeneration in wires, contacts and coils.
  • Single-phase CB monitoring
  • Flush mounting enclosure
  • 2 output contacts.
  • Operation delay to avoid spurious signals for instance, on circuit breaker operations
  • TEST function for Self Test facilitates routine maintenance.
  • Auto / Manual operation mode.
  • Wide range Auxiliary Supply.
PROTECTION
  • Trip Circuit Supervision (74TC)

 

 

 

Hardware & HMI

  • Functional Operation indication by 4 LED’s namely CB OK , CB Fail , Manual and Edit.
  • Trip circuit breaker fail (1 N/O)
  • Trip circuit breaker fail (1 N/C)
  • Max Breaking capacity AC:1250 VA(AC) DC(Resistive load ) 0.4A,200VDC
  • Max. continuous Current for CB failure relay contacts 6A at 230 VAC/24VDC
  • CB Operating Time (Supervision Time) – (0.1s / 0.3s / 0.6s) user settable with accuracy of ± 30 ms.

Variant

Auxiliary supply

  • 24V DC  (12 V <Operative range< 48V)
  • 110V DC  (55 V <Operative range< 180V)
  • 220V DC  (110 V<Operative range< 280 V)

Mounting Type

  • Vertical
  • Horizontal

Dimensions