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BE1-27 | BE1-59 | BE1-27/59 | BE1-32R | BE1-32 O/U | BE1-40Q | BE1-46N | BE1-47N | BE1-50 | BE1-50BF | previous | next
 

BE1-27 Undervoltage Relay
BE1-59 Overvoltage Relay
BE1-27/59 Under/Overvoltage Relay

Protects equipment from adverse voltage conditions.
 
  • Units available for overvoltage, undervoltage or both
  • Independent INST and TIME elements
  • Instantaneous, definite or inverse timing characteristics
  • Wide voltage adjustment range (1-40V, 55-160V, or 110-320V)
  • Drawout construction

Download Bulletin UBF for more information or download the instruction manual.
BE1-27/59


BE1-32R Directional Overpower

Protects against motoring prime movers or reverse power flow into the utility grid.

  • Senses actual power flow
  • Operating range down to a power factor of 0.1
  • Sensitivity is not affected by negative sequence currents
  • Measures both real and reactive power
  • Input configurations available for single and multiple phases
  • Sensing ranges cover 0.5 watts to 6000 watts secondary
  • Instantaneous, definite or inverse time characteristics
  • Supplied in S1 (drawout construction) or M1 case depending on options
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BE1-32R S1 and M1

Download Bulletin UBU for more information or download the instruction manual.

BE1-32 O/U Directional Overpower/Underpower Relay

  • Senses actual power flow
  • Protects against reverse power flow, underpower and overpower conditions.
  • Operating range down to a power factor of 0.1
  • Sensitivity is not affected by negative sequence currents
  • Measures both real and reactive power
  • Input configurations available for single and multiple phases
  • Sensing ranges cover 0.5 watts to 6000 watts secondary
  • Instantaneous, definite or inverse time characteristics

Supplied in S1(drawout construction) or M1 case depending on options

Download Bulletin UBU for more information or download the instruction manual.
 

BE1-40Q Loss of Excitation Relay

Protects 50 or 60 Hz synchronous generators against loss of field conditions.

  • Measures Var flow to sense loss of excitation
  • Trip characteristics are defined on complex plane for ease of application
  • Definite time characteristics
  • Drawout construction

Download Bulletin UBW for more information or download the instruction manual.
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BE1-40Q

 

BE1-46N Negative Sequence Overcurrent Relay

Provides protection against unbalanced currents or incorrect phasing.
 
  • Replicates heating as characteristics of machines
  • Pickup may be set as low as 1% negative sequence
  • Unaffected by +/-10Hz frequency changes
  • Output contacts for alarm, trip and initiating other devices
  • External panel meter to display negative sequence current level (optional)
  • Drawout construction

Download Bulletin UDJ for more information or download the instruction manual.
BE1-46N


BE1-47N Negative Sequence Voltage Relay

Provides protection against reverse phase sequence, unbalance or open phase.

  • Pickup may be set as low as 2% negative sequence
  • Unaffected by +/-5 Hz frequency changes
  • Inverse, definite and instantaneous timing options
  • Independent overvoltage and undervoltage elements (optional)
  • Drawout construction

Download Bulletin UDK for more information or download the instruction manual.
 

BE1-50 Instantaneous Overcurrent Relays

Provides high speed protection for phase or ground faults.

  • Setting ranges cover 0.25 to 32 amps
  • Single-phase, three-phase, two-phase with neutral, or three-phase with neutral configurations
  • Self-powered (option)
  • Drawout construction

Download Bulletin UBC for more information or download the instruction manual.

BE1-50BF Breaker Failure Relay

Provides output to trip backup breakers if monitored breaker fails.
  • Cycle control timer sets the failure detection window
  • Less than 1 millisecond fault detector reset time
  • Two inputs for initiation/control with independent timing
  • Field adjustable logic for tailoring to specific needs
  • Three breaker fail outputs plus one instantaneous retrip
  • Drawout construction

Download Bulletin UBT for more information or download the
instruction manual.
 
BE1-50BF

Breaker failure application and the timing function of this relay are addressed in Application Note PC-50BF1.
 
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