GE Multilin 850 Instruction Manual page 14

DESCRIPTION OF THE 850 FEEDER PROTECTION SYSTEM
1–4
ANSI Device
51_2
52
55
59N
59P
59X
59_2
67G
67SG
67N
67P
67_2
79
81O
81U
81R
87G
AFP
CLP
I1/12
MCB
SOTF
VTFF
Table 1-2: Other Device Functions
Description
Analog Input
Analog Output
Automatic Bus Transfer Scheme (MTM)
2
Breaker Arcing Current (I t)
Breaker Control
Breaker Health
CT Supervision
Current/Power Demand
Data Logger
Digital Counters
Event Recorder
Fault Report and Fault Locator
Fast Underfrequency
Flexelements
FlexLogic Equations
Flexstates
Harmonic Detection
IEC 61850 Communications
Metering: current, voltage, power, PF, energy, frequency, harmonics, THD
Load Encroachment
Description
Negative Sequence Time Overcurrent
AC Circuit Breaker
Pole Discordance
Power Factor
Neutral Overvoltage
Phase Overvoltage
Auxiliary Overvoltage
Negative Sequence Overvoltage
Ground Directional Element
Sensitive Ground Directional Element
Neutral Directional Element
Phase Directional Element
Negative Sequence Directional Element
Automatic Recloser
Overfrequency
Underfrequency
Frequency Rate of Change
Restricted Ground Fault (RGF)
Arc Flash Protection
Cold Load Pickup
Broken Conductor
Manual Close Blocking
Switch Onto Fault
Voltage Transformer Fuse Failure
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION