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DESCRIPTION OF THE 869 MOTOR PROTECTION SYSTEM
1–4
ANSI Device
51P
52
55 (2)
59N
59P (2)
59X
59_2
67N
67P
78
81O (2)
81U (4)
81R
86
87S
VTFF
Table 1-2: Other Device Functions
Description
Analog Input
Analog Output
Arc Flash Protection
2
Breaker Arcing Current (I
t)
Switching Device Control
Breaker Health
Output Relays
Demand
Digital Counters
Event Recorder
Fault Report
FlexLogic Equations
IEC 61850 Communications
Metering: current, voltage, power, PF, energy, frequency, harmonics, THD
Modbus User Map
Non-volatile Latches
Setpoint Groups (6)
Stator Inter-Turn Fault
Trip Bus (6)
Transient Recorder (Oscillography)
Trip and Close Coil Monitoring
User-programmable LEDs
User-programmable Pushbuttons
Virtual Inputs (32)
Virtual Outputs (32)
Mechanical Jam
Overload Alarm
Short Circuit
Description
Phase Time Overcurrent
AC Circuit Breaker
Power Factor
Neutral Overvoltage
Phase Overvoltage
Auxiliary Overvoltage
Negative Sequence Overvoltage
Neutral Directional Element
Phase Directional Element
Out-of-Step Protection
Overfrequency
Underfrequency
Frequency Rate of Change
Start Inhibit
Stator Differential
Voltage Transformer Fuse Failure
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION
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