BE1-59N | BE1-59NC | BE1-60 | BE1-64F | BE1-67 | BE1-79A | BE1-79M | BE1-81 O/U | BE1-87B | BE1-87G | BE1-87T | previous | next

BE1-59N Ground Fault Overvoltage Relay

Provides sensitive ground fault protection for ungrounded or high resistance grounded systems, generators, or capacitors.

Overvoltage element tuned to reject harmonics
Pickup down to 0.1 volts
Withstands full rated voltage continuously
Third harmonic undervoltage element for 100% stator protection
(optional)
Instantaneous, definite, or inverse time characteristics
Drawout construction

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

BE1-59NC Capacitor Neutral Overvoltage Relay

Provides sensitive protection for capacitor banks.

Helps avoid cascading capacitor failures
Sensing circuit rejects harmonics and noise to achieve higher sensitivity to 50/60 Hz neutral voltage
Includes an early warning alarm output on minor unbalances such as a blown fuse
Can be set to trip when voltage across any capacitor exceeds 110% of nominal
Drawout construction

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

BE1-60 Voltage Balance Relay

Detects voltage imbalances on relay/control circuits.

Wide range adjustments (5% to 50%)
Six input sensing types to match various system configurations
Maximum trip time of 100 milliseconds
Drawout construction

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

BE1-64F Ground Fault Relay

A solid-state device designed to detect abnormal grounding of ungrounded circuits, such as the field winding of a generator or motor.

Two fixed levels of ground detection – a pre-alarm level and a trip level.
Each level has an independent LED indicator and output contact.
Latching Target LED to indicate a trip condition even after the ground is removed.
The Target LED drive circuit is magnetically latched, so that the LED will return to the illuminated state following an interruption of control power to the BE1-64F.


		Move your cursor over the picture to see the BE1-64F drawn out of its case.

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

BE1-67 Phase Directional Time Overcurrent Relay

Microprocessor directional overcurrent relay to be used to protect transmission and distribution circuits
where power can flow in either direction. The relay uses quadrature voltage polarization to determine the direction of fault current flow

Single- or three-phase sensing.
Time overcurrent range is continuously adjustable from 0.5 to 12A.
Instantaneous range is adjustable from 1 to 40 times the time overcurrent
element pickup.
Polarized by line-to-line potential.
Time-current characteristics are field selectable with optional switch.
Time dial is adjustable in 100 incremental steps.
A Limited Range of Operation option is available to provide additional
protection against false tripping on mutually coupled lines.
Optional directional or non-directional instantaneous elements.

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

BE1-79A Retrofit Reclosing Relay
Patent Pending

Installs in existing ACR, NLR and RC cases without panel or wiring changes. BE1-79A Group

Single BE1-79A configuration replaces multiple ACR and NLR types
Easy setup with front panel communications interface
Drawout construction
Available in S1 case for new installations, S2 and FT32 cradle for retrofits

For more information on the application options the BE1-79A can provide, see Application Note PC-79A01.

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

BE1-79M Multiple Shot Reclosing Relay

Provides automatic reclosing of tripped circuit breakers in power transmission and distribution systems

Contact selectable reclosing sequences are programmable for up to 4 reclosure attempts.
Ability to resume reclosing sequence if control power is interrupted.
Individually adjustable time-delayed reclosing attempts. Separate high speed “Pilot” reclose input and output are available for transmission reclosing applications.
Drawout construction

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

BE1-81 O/U Digital Frequency Relay

Protects the system during over and/or underfrequency conditions.

Direct frequency trip settings
Accuracy of +/- 0.003 Hz
Pickup adjustable in increments of 0.01 Hz
40 to 70 Hz operating range
Up to 4 independent over or underfrequency set points
Inverse or definite time delay characteristics
Supplied in S1 (drawout construction) or M1 case

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

BE1-87B Bus Differential Relay

Economical high speed protection in a conventional package for all high impedance differential applications.

High Impedance Differential provides optimum speed and selectivity
Fully drawout, testable-in-case design, compatible with existing panel mount configurations.
CT Circuit Diagnostic function and Steady State Unbalance alarm verify external wiring and prevent misoperation.
Intentional 20msec delay timer can be inserted in the trip logic to aid in coordination when bus is tapped with high speed fuses
Available in a 3 phase 19" rack mount case, a 3 phase M1 case, and a single phase S1 case (drawout construction) to allow space and cost benefits.