Rtd S 1 To 6 - GE Multilin 489 Instruction Manual

CHAPTER 5: SETPOINTS
5.9.2 RTDs 1 to 6
1 RTD #1
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
Table 5–6: RTD Temperature vs. Resistance
Temperature
° C ° F
180 356 168.47
190 374 172.46
200 392 175.84
210 410 179.51
220 428 183.17
230 446 186.82
240 464 190.45
250 482 194.08
PATH: SETPOINTS S8 RTD TEMPERATURE
[ ] RTD #1 APPLICATION:
Stator
RTD #1 NAME:
MESSAGE
RTD #1 ALARM:
MESSAGE
Off
ASSIGN ALARM
MESSAGE
RELAYS (2-5): ---5
RTD #1 ALARM
MESSAGE
TEMPERATURE: 130°C
RTD #1 ALARM
MESSAGE
EVENTS: Off
RTD #1 TRIP:
MESSAGE
Off
RTD #1 TRIP VOTING:
MESSAGE
RTD #1
ASSIGN TRIP
MESSAGE
RELAYS (1-4): 1---
RTD #1 TRIP
MESSAGE
TEMPERATURE: 155°C
RTDs 1 through 6 default to Stator RTD type. There are individual alarm and trip
configurations for each RTD. This allows one of the RTDs to be turned off if it malfunctions.
The alarm level is normally set slightly above the normal running temperature. The trip
level is normally set at the insulation rating. Trip voting has been added for extra reliability
in the event of RTD malfunction. If enabled, a second RTD must also exceed the trip
temperature of the RTD being checked before a trip will be issued. If the RTD is chosen to
vote with itself, the voting feature is disabled. Each RTD name may be changed if desired.
100 Ω Pt 120 Ω Ni
(DIN 43760)
280.77
291.96
303.46
315.31
327.54
340.14
353.14
366.53
RTD #1(6)
Range: Stator, Bearing, Ambient, Other,
Range: 8 alphanumeric characters
Range: Off, Latched, Unlatched
Range: Any combination of Relays 2 to
Range: 1 to 250°C in steps of 1
Range: On, Off
Range: Off, Latched, Unlatched
Range: RTD #1 to RTD #12
Range: Any combination of Relays 1 to
Range: 1 to 250°C in steps of 1
100 Ω Ni 10 Ω Cu
233.97 16.00
243.30 16.39
252.88 16.78
262.76 17.17
272.94 17.56
283.45 17.95
294.28 18.34
305.44 18.73
None
5.
4
5–65