GE 339

CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 339 MOTOR PROTECTION SYSTEM
339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 1–3
Figure 1-1: Functional block diagram
Table 1-1: ANSI device numbers and functions
896814A4.CDR
52
37
46
48
50P
50N
MOTOR
LOAD
Stator RTDs
Bearing RTDs
Phase CT 3
Ground CT 1
BUS
339
MOTOR PROTECTION SYSTEM
Ambient air
RTD
38
Optional RTD
51N
86
START
51P
TRIP
CLOSE
START INHIBIT
27P 59P
59_2
59_2
81O 81U
47
50G/SG
67N
27_1
VTFF
50BF
60CTS
66
49T
50L 51R
METERING
TRANSIENT RECORDER
EVENT RECORDER
FAULT REPORT
22
2
222
11
1
11
11
32
ANSI Code 61850 Logical Node Description
27_1 psseqPTUV1,
psseqPTUV2
Positive Sequence Undervoltage
27P phsPTUV1, phsTUV2 Phase Undervoltage
32 PDOP1, PDOP2 Directional Power
37 PTUC1 Undercurrent
37P PDUP1 Underpower
38/49T rtdGGIO6 Bearing RTD
Stator/Ambient/Other
RTD Trouble Alarm
46 unbalPTOC1 Current Unbalance
47 phsrevPTOV1 Voltage Phase Reversal
48 accelPTOC1 Acceleration Time
49 PTTR1 Thermal Protection/Stall Protection
50BF RBRF1 Breaker Failure / Welded Contactor
50G/SG gndPIOC1 Ground Fault/Sensitive Ground Fault (CBCT)
50L ldincPTOC1 Load Increase Alarm
50N ndPIOC1 Neutral Instantaneous Overcurrent
50P scPIOC1 Short Circuit
51N ndPTOC1 Neutral Timed Overcurrent
51P phsPTOC1 Phase Timed Overcurrent
51R jamPTOC1 Mechanical Jam
59_2 ngseqPTOV Negative Sequence Overvoltage
59P phsPTOV1, phsPTOV2 Phase Overvoltage