BE1-951

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Multifunction numerical relay that provides three phase, ground, and negative sequence directional or non-directional overcurrent protection with four shot recloser, forward or reverse power protection, breaker failure, over/underfrequency, over/undervoltage and overexcitation protection, sync check, breaker monitoring and control, sequential events, fault reporting, and metering functions, all in an integrated system.

TECHNICAL PARAMETERS

5 Amp CURRENT INPUTS
Continuous rating 20A
One sec. rating 400A
Saturation limit 150A
1 Amp CURRENT INPUTS
Continuous rating 4A
One sec. rating 250A
Saturation limit 30A
POWER SUPPLY
Option 1 DC 35-150V
  AC 55-135V
Option 2 DC 90-300V
  AC 90-270V
Option 3 DC 17-32V
Burden 6W continuous
  8W maximum with all outputs energized
ENVIRONMENT
Operating temperature range -40°C to 70°C
WARRANTY 7 years

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ADVANTAGES

  • BESTlogic provides the user with complete flexibility in configuring a protection and control system. User programmable variable and switch names make these relays completely self documenting
  • Includes frequency tracking and voltage restrained overcurrent for backup and cogeneration applications
  • Programmable LCD display allows the relay to replace local indication and control functions, such us panel metering, alarm annunciation, and control switches
  • Three independent communication ports with protocol support allows integration with distributed control system
  • Includes Real Time Clock with 8 hour capacitor ride through and option battery backup.