Summary Of Features - GE 750 Instruction Manual

1.1 INTRODUCTION
1
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
1-
2
Courtesy of NationalSwitchgear.com
MONITORING
• Phase and Neutral Current Level
• Power Factor
• Fault Locator
• Demand
• Analog Input
• Overfrequency
• Trip Counter Limit
• Total Breaker Arcing Current
• 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
• Frequency Magnitude and Rate
• Synchronizing Voltage Phasor
• Synchronizing Voltage Frequency
Synchronizing ∆Φ, ∆kV, ∆Hz
•
• Single and Three Phase Power
• Energy
• Last and Maximum Demand
• Analog Input Magnitude
• Analog Input Rate
750/760 Feeder Management Relay
1 PRODUCT OVERVIEW

1.1.2 SUMMARY OF FEATURES

(Two Independent Stages)
(I , I , I , MW, Mvar, MVA)
a b c
(Two Threshold Stages)
(Two Rate Stages)
(Per Phase)
(Current and Voltage)
(MW, Mvar, MVA, PF)
(MWh, Mvarh)
(I , I , I , MW, Mvar, MVA)
a b c
(per minute, per hour)
GE Power Management