GE 745 TRANSFORMER MANAGEMENT RELAY

10-12 745 Transformer Management Relay GE Power Management
10.5 DISPLAY, METERING, COMMUNICATIONS, ANALOG OUTPUTS 10 COMMISSIONING
10
Refer to RTD tables included in this manual for calibration of resistance versus temperature.
c) AMBIENT TEMPERATURE BY MONTHLY AVERAGES
1. If the ambient temperature is entered as 12 monthly averages, program the value for the month during
which the relay is being commissioned.
Table 10–1: MEASURED RTD TEMPERATURE – 100
Ω
PLATINUM
100
Ω
PLATINUM
RESISTANCE
EXPECTED RTD READING MEASURED RTD
TEMPERATURE
____°C ____°F
(select one)
°C °F
80.31 –50 –58
100.00 0 32
119.39 50 122
138.50 100 212
157.32 150 302
175.84 200 392
194.08 250 482
Table 10–2: MEASURED RTD TEMPERATURE – 120
Ω
NICKEL
120
Ω
NICKEL
RESISTANCE
EXPECTED RTD READING MEASURED RTD
TEMPERATURE
____°C ____°F
(select one)
°C °F
86.17 –50 –58
120.0 0 32
157.74 50 122
200.64 100 212
248.95 150 302
303.46 200 392
366.53 250 482
Table 10–3: MEASURED RTD TEMPERATURE – 100
Ω
NICKEL
100
Ω
NICKEL
RESISTANCE
EXPECTED RTD READING MEASURED RTD
TEMPERATURE
____°C ____°F
(select one)
°C °F
71.81 –50 –58
100.00 0 32
131.45 50 122
167.20 100 212
207.45 150 302
252.88 200 392
305.44 250 482