General Electric 737 overview
Bodine Electric 737 Cables, Connectors & Assemblies GE Multilin 737 Series Feeder Protection Relays The 735/737 is a microprocessor based relay used to perform primary circuit protection on distribution networks at any voltage level. Instantaneous and time overcurrent phase and ground protection fea...
What is General Electric 737?
Bodine Electric 737 Cables, Connectors & Assemblie.... Bodine Electric 737 Cables, Connectors & Assemblies GE Multilin 737 Series Feeder Protection Relays The 735/737 is a microprocessor based relay used to perform primary circuit protection on distribution networks at any voltage level. Instantaneous and time overcurrent phase and ground protection fea...
Product details
Manufactured byGeneral Electric
Product group Connectors & Assemblies
DescriptionBodine Electric 737 Cables, Connectors & Assemblies
Description 1786340062GE Multilin 737 Series Feeder Protection Relays
OverviewThe 735/737 is a microprocessor based relay used to perform primary circuit protection on distribution networks at any voltage level. Instantaneous and time overcurrent phase and ground protection features replace the equivalent of 8 separate protection devices. Each protection element can be selectively enabled by front panel dial settings. Flexible settings and selectable curve shapes enable accurate coordination with other devices. Cause of trip indications and a bar graph load monitor are provided on the front panel.A momentary dry contact closure from the 735/737 relay is used to activate the breaker trip coil in the event of a fault. To help determine the cause of a trip, separate indicators are provided for phase instantaneous, phase time overcurrent, ground fault instantaneous, and ground fault time overcurrent. These latched indicators remain set after a breaker trip. They can be reset by the front panel CLEAR button.A special feature of the 735/737 named "Trip Record" is the ability of the relay to sequentially display the last five causes of trips. To display the trips, press and hold the reset key. After 2 seconds, the front panel indicators will display the last 5 trips starting with the most recent.The 735/737 has separately adjustable instantaneous and time overcurrent pickup levels. No intentional delay is added to the instantaneous trip. Five separate time overcurrent curve shapes can be selected: definite time, moderately inverse, normal inverse, very inverse, and extremely inverse. For each curve shape, 40 different curves to produce different time delay levels can be selected using the time multiplier settings and curve shift. These allow selection of optimum coordination with fuses, feeders, motors, transformers, etc. To monitor load current, a front panel bar graph indicator is provided. It gives an indication of 10% of CT rating to 100% of CT in steps of 10%. This is useful for monitoring breaker loading and during testing.
Protection3 separate phase time overcurrent (51) elements with 5 curve shapes: Definite time, moderately inverse, normal inverse, very inverse, extremely inverse.Phase instantaneous (50) elementGround time overcurrent (51G) with 5 curve shapes:Definite time, moderately inverse, normal inverse, very inverse, extremely inverse.Ground instantaneous (50G) element10 curves for each shape4 time multipliers for each curve3 different curve types: ANSI, IAC, IEC/BS142
TripPhase A, B, C instantaneousPhase A, B, C time overcurrentGround fault instantaneousGround fault time overcurrent
StatusRelay in serviceService requiredPhase pickupGround pickup
Other Key FeaturesConventional 1 A or 5 A CT inputDrawout caseAC or DC control powerSeal provision for tamper proof settingsOutput contacts:TripAux TripService Required(737 only) pickup, trip, cause of trip outputs;50A, 50B, 50C, 50N51A, 51B, 51C, 51NRS485 communications: settings, currents, status86 lockoutProgrammable block instantaneous on autoreclose.Ground Fault trip programmable to Aux. Trip relay, separate from Main trip.
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General Electric
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Connectors & Assemblies
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