GE 850 Instruction Manual page 16

DESCRIPTION OF THE 850 FEEDER PROTECTION SYSTEM
ANSI Description
Device
59N Neutral Overvoltage
59P Phase Overvoltage
59X Auxiliary Overvoltage
59_2 Negative Sequence Overvoltage
67G Ground Directional Element
67SG Sensitive Ground Directional Element
67N Neutral Directional Element
67P Phase Directional Element
67_2 Negative Sequence Directional Element
79 Automatic Recloser
81O Overfrequency
81U Underfrequency
81R Frequency Rate of Change
87G Restricted Ground Fault (RGF)
AFP Arc Flash Protection
CLP Cold Load Pickup
I1/12 Broken Conductor
MTM Automatic Bus Transfer Scheme
MCB Manual Close Blocking
SOTF Switch on to Fault
TGFD Transient Ground Fault Detection
VTFF Voltage Transformer Fuse Failure
n/a Fast Underfrequency
n/a Underfrequency Restoration
n/a Undervoltage Restoration
n/a Load Encroachment
1–6
CHAPTER 1: INTRODUCTION
850-E 850-D
Industrial Distribution
Y (4) Y (4)
Y (4) Y (4)
Y (2) Y (4)
Y (2) Y (4)
Y (1) Y (2)
Y (1) Y (1)
Y (1) Y (4)
Y (1) Y (4)
Y (1) Y (2)
Y (1) Y (2)
Y (6) Y (12)
Y (6) Y (12)
Y (6) Y (12)
Y Y
Y (4) Y (4)
Y (1) Y (2)
Y (1) Y (3)
Y Y
Y Y
Y (3)
Y Y
Y Y
Y (1) Y (2)
Y Y
Y Y
Y (1) Y (2)
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
850-P
Padmount
Y (4)
Y (4)
Y