ABB REM 610 - Page 45

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DIFF
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mA
DIFF
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RTD sensor/
thermistor
RTD sensor/
thermistor
Common
Common
A050429
Fig. 5.1.4.11.-1 RTD sensor/thermistor con nection
RTD temperature vs resistance
Resistance values (Ω) of RTD sensors at specified temperatures are presented in the
table below.
Table 5.1.4.11.-1 Resistance values of RTD sensors
Temperature
°C
Platinum TCR 0.00385 Nickel TCR 0.00618 Copper TCR
0.00427
Nickel TCR
0.00672
Pt 100 Pt 250 Pt 1000 Ni 100 Ni 120 Cu 10 Ni 120 US
-40 84.27 210.68 842.7 79.1 94.92 7.49 92.76
-30 88.22 220.55 882.2 84.1 100.92 - -
-20 92.16 230.4 921.6 89.3 107.16 8.26 106.15
-10 96.09 240.23 960.9 94.6 113.52 - -
0 100.00 250 1000 100.0 120 9.04 120.00
10 103.90 259.75 1039 105.6 126.72 - -
20 107.79 269.48 1077.9 111.2 133.44 9.81 134.52
30 111.67 279.18 1116.7 117.1 140.52 - -
40 115.54 288.85 1155.4 123.0 147.6 10.58 149.79
50 119.40 298.5 1194 129.1 154.92 - -
60 123.24 308.1 1232.4 135.5 162.36 11.352 165.90
70 127.07 317.68 1270.7 141.7 170.04 - -
80 130.89 327.23 1308.9 148.3 177.96 12.12 182.84
90 134.70 336.75 1347 154.9 185.88 - -
100 138.50 346.25 1385 161.8 194.16 12.90 200.64
120 146.06 365.15 1460.6 176.0 211.2 13.67 219.29
Motor Protection Relay
Technical Reference Manual - ANSI Version
REM 610REM 610
1MRS755537