GE Power Management 735/737 Feeder Protection Relay 1-
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1 INTRODUCTION 1.1 OVERVIEW
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1 INTRODUCTION 1.1 OVERVIEW 1.1.1 FEATURES
a) PROTECTION
• 3 separate phase time overcurrent (51) elements with 5 curve shapes:
Definite time, moderately inverse, normal inverse, very inverse, extremely inverse.
• Phase instantaneous (50) element
• Ground time overcurrent (51G) with 5 curve shapes:
Definite time, moderately inverse, normal inverse, very inverse, extremely inverse.
• Ground instantaneous (50G) element
• 10 curves for each shape
• 4 time multipliers for each curve
• 3 different curve types: ANSI, IAC, IEC/BS142
b) INDICATORS
Trip: Phase A, B, C instantaneous
Phase A, B, C time overcurrent
Ground fault instantaneous
Ground fault time overcurrent
Status: Relay in service
Service required
Phase pickup
Ground pickup
Current bargraph: 10 to 100%
c) OTHER
• Conventional 1 A or 5 A CT input
•Drawout case
• AC or DC control power
• Seal provision for tamper proof settings
• Output contacts:
•Trip
•Aux Trip
• Service Required
•
(737 only)
pickup, trip, cause of trip outputs;
• 50A, 50B, 50C, 50N
• 51A, 51B, 51C, 51N
• RS485 communications: settings, currents, status
• 86 lockout
• Programmable block instantaneous on autoreclose.
• Ground Fault trip programmable to Aux. Trip relay, separate from Main trip.
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