1.2–6.6 kV drive units
Table 11: Stator temperature monitoring configuration, 1.2–6.6 kV
Standard /
Optional
Monitoring Configuration Description
Standard This configuration uses the following:
• Three thermistors, connected in series, are incorporated in the coil ends of the
stator windings. T
Ref
=155°C (310°F) for medium-voltage drive units.
• Three Pt100 sensors, one for each phase, are incorporated in the windings.
There are three additional thermistors, and 3 additional Pt100 sensors, already in
place in the stator windings as reserves. See below for sensor markings.
Stators used in the 1.2–6.6 kV drive units are equipped with 3 Pt100 sensors marked 19:20, 21:22, and
23:24. These are connected at the plinth on the terminal plate. The stator is also equipped with a duplicate
set of 3 Pt100 sensors, marked 19s:20s, 21s:22s, and 23s:24s. This duplicate set is not connected to the
terminal plate as long as the first set of 3 Pt100 sensors are functioning; it is kept in reserve as a back-up
set. The ends of the reserve sensor leads are isolated, and leads bundled among the other cables, until the
back-up Pt100 sensors are needed.
Pt100 resistance
This table shows the relationship between temperature (°C) and resistance (ohms).
T, °C R, ohms T, °C R, ohms T, °C R, ohms T, °C R, ohms T, °C R, ohms
0 100.00 33 112.83 66 125.54 99 138.12 132 150.57
1 100.39 34 113.22 67 125.92 100 138.50 133 150.95
2 100.78 35 113.61 68 126.31 101 138.88 134 151.33
3 101.17 36 113.99 69 126.69 102 139.26 135 151.70
4 101.56 37 114.38 70 127.07 103 139.64 136 152.08
5 101.95 38 114.77 71 127.45 104 140.02 137 152.45
6 102.34 39 115.15 72 127.84 105 140.39 138 152.83
7 102.73 40 115.54 73 128.22 106 140.77 139 153.20
8 103.12 41 115.93 74 128.60 107 141.15 140 153.58
9 103.51 42 116.31 75 128.98 108 141.53 141 153.95
10 103.90 43 116.70 76 129.37 109 141.91 142 154.32
11 104.29 44 117.08 77 129.75 110 142.29 143 154.70
12 104.68 45 117.47 78 130.13 111 142.66 144 155.07
13 105.07 46 117.85 79 130.51 112 143.04 145 155.45
14 105.46 47 118.24 80 130.89 113 143.42 146 155.82
15 105.85 48 118.62 81 131.27 114 143.80 147 156.19
16 106.24 49 119.01 82 131.66 115 144.17 148 156.57
17 106.63 50 119.40 83 132.04 116 144.55 149 156.94
18 107.02 51 119.78 84 132.42 117 144.93 150 157.31
19 107.40 52 120.16 85 132.80 118 145.31 151 157.69
20 107.79 53 120.55 86 133.18 119 145.68 152 158.06
21 108.18 54 120.93 87 133.56 120 146.06 153 158.43
22 108.57 55 121.32 88 133.94 121 146.44 154 158.81
23 108.96 56 121.70 89 134.32 122 146.81 155 159.18
24 109.35 57 122.09 90 134.70 123 147.19 156 159.55
25 109.73 58 122.47 91 135.08 124 147.57 157 159.93
26 110.12 59 122.86 92 135.46 125 147.94 158 160.30
27 110.51 60 123.24 93 135.84 126 148.32 159 160.67
28 110.90 61 123.62 94 136.22 127 148.70 160 161.04
29 111.28 62 124.01 95 136.60 128 149.07
30 111.67 63 124.39 96 136.98 129 149.45
31 111.94 64 124.77 97 137.36 130 149.82
32 112.45 65 125.16 98 137.74 131 150.20
Product Description
32 C3300/6x5, C/R3231, C3240, C3306, C3312, C3351, C3356, C3400, C3501, C3531, C3602, C3800 Installation,
Operation and Maintenance Manual
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