MIDLAND JAY - FREQUENCY MONITORING RELAYS

Product

group

JJ

BFP

Features

  • Din Rail Mounted
  • Monitors mains frequency deviation
  • Available as nominal 50Hz, 60Hz & 400Hz
  • Wide choice of nominal supply options
  • Output DPCO
  • Dual LED indication
Download data sheet

Din rail mounted frequency monitoring relays available in a choice of nominal frequencies of 50Hz, 60Hz and 400Hz on a wide choice of supply voltages either referenced L-N or L-L (L-L units only require the connection of two phases). The frequency relays are in effect self-powered and do not require a separate auxiliary supply.

Providing the monitored supply frequency is between the lower and upper (fixed*) limits the output relay will energise, indicated via a green LED. If the frequency deviates outside these limits the output relay will de-energise, indicated via a red LED. The unit resets automatically when the frequency returns to within the limits.

*The limits are fixed:-
50Hz (47.5Hz to 52.5Hz)
60Hz (57Hz to 63Hz)
400Hz (380-420Hz)

Supply Voltage:
110VAC, 230VAC, 415VAC, 440VAC
Other voltages on request

Frequency:
50Hz, 60Hz, 400Hz
Other nominal frequencies on request

Lower limit:
50Hz (47.5Hz)
60Hz (57Hz)
400Hz (380Hz)

Upper limit:
50Hz (52.5Hz)
60Hz (63Hz)
400Hz (420Hz)

Stability: < 1%

Response time: 0.5 secs

Output: DPCO Rating: 3 Amps / 250V

Mechanical life: 30 Million ops

Electrical life: 200K ops at max rated load

Isolation: 2KVA for 1 min

Power consumption: < 5VA

Temperature range: -15°C to +60°C

Type

BFP

Voltage

110VAC
230VAC
415VAC
440VAC
Special VAC

Frequency

50Hz
60Hz
400Hz
Special Hz

**Specify

BFP-DIMENSIONS-CONNECTIONS.png#asset:3278

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