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2
SPM Synchronous Motor Protection & Control
GE Power Management
1.1 OVERVIEW
1 INTRODUCTION
1
The man-machine interface (MMI) consists of a backlit alphanumeric display and a keypad to accommodate
relay programming as well as viewing actual motor parameters which comprise:
•
AC stator current
•
Power factor
•
DC field current
•
DC field voltage
•
DC field resistance
•
Running time meter (RTM)
Statistical data includes number and type of trips.
The SPM performs a complete system check prior to starting the motor.
Figure 1–1: SINGLE LINE DIAGRAM
701767A9.CDR
MOTOR
LOAD
AC BUS
CLUTCH
COUPLING
DC SUPPLY
27 26F
95
96
56
95
48
94
86
94
48
55
SPM
Stator
Protection
(469)
Calibrator
DC
CT
37
50
I
AC
V
DC
I
DC
V
AC
ANSI DEVICE NUMBERS
Field overtemperature
Undervoltage
Undercurrent or underpower
Incomplete sequence
Instantaneous overcurrent
Power factor
Field application
Lock out
Tripping
Reluctance torque sync. / resync.
Autoloading relay
26F
27
37
48
50
55
56
86
94
95
96
Содержание SPM Series
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