GE 750 - Summary of Features

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750/760 Feeder Management Relay GE Power Management
1.1 INTRODUCTION 1 PRODUCT OVERVIEW
1
1.1.2 SUMMARY OF FEATURES
PROTECTION
• Two Phase Time Overcurrent Elements with Voltage
Restraint
• Two Phase Instantaneous Overcurrent Elements
• Two Neutral Time Overcurrent Elements
• Two Neutral Instantaneous Overcurrent Elements
• Ground Time and Instantaneous Overcurrent
• Sensitive Ground Time and Instantaneous Overcur-
rent
• Negative Sequence Time and Instantaneous Overcur-
rent
• Phase, Neutral, Ground, Sensitive Ground, and Nega-
tive Sequence Directional Control
• Negative Sequence Voltage
• Neutral Displacement
• Two Bus Undervoltage Elements
• Two Line Undervoltage Elements
• Two Overvoltage Elements
• Two Underfrequency Elements
• Frequency Decay
• Breaker Failure with Current Supervision
INPUTS
• 5 - AC Currents
• 4 - AC Voltages
• 20 Programmable Logic Inputs
(14 contact and / or virtual)
(6 virtual)
• 1 Analog Input
OUTPUTS
• 8 Electro-Mechanical Relays
• 1 Solid-State Trip
• 8 Analog Transducers
MONITORING
• Phase and Neutral Current Level
• Power Factor
(Two Independent Stages)
•Fault Locator
• Demand
(I
a
, I
b
, I
c
, MW, Mvar, MVA)
• Analog Input
(Two Threshold Stages)
(Two Rate Stages)
• Overfrequency
• Trip Counter Limit
• Total Breaker Arcing Current
(Per Phase)
• Breaker Operation Failure
• Trip and Close Coil Monitors
• VT Failure
• Pulsed Output
METERING
• Average Current
• Phase, Neutral, Ground, and Sensitive Ground Cur-
rent Phasors
• Average Line and Phase Voltage
• Line and Phase Voltage Phasors
• Symmetrical Component Phasors
(Current and Voltage)
• Frequency Magnitude and Rate
• Synchronizing Voltage Phasor
• Synchronizing Voltage Frequency
• Synchronizing ∆Φ, ∆kV, ∆Hz
• Single and Three Phase Power
(MW, Mvar, MVA, PF)
•Energy
(MWh, Mvarh)
• Last and Maximum Demand
(I
a
, I
b
, I
c
, MW, Mvar, MVA)
• Analog Input Magnitude
• Analog Input Rate
(per minute, per hour)