What is basic difference between Soft Starters And VFD
drives?

Answer Posted / thamprasad

Values for various popular resistance thermometers
Values for various popular resistance thermometers
Temperature
in °C Pt100
in Ω Pt1000
in Ω PTC
in Ω NTC
in Ω NTC
in Ω NTC
in Ω NTC
in Ω NTC
in Ω
Typ: 404 Typ: 501 Typ: 201 Typ: 101 Typ: 102 Typ: 103 Typ:
104 Typ: 105
−50 80,31 803,1 1032
−45 82,29 822,9 1084
−40 84,27 842,7 1135 50475
−35 86,25 862,5 1191 36405
−30 88,22 882,2 1246 26550
−25 90,19 901,9 1306 26083 19560
−20 92,16 921,6 1366 19414 14560
−15 94,12 941,2 1430 14596 10943
−10 96,09 960,9 1493 11066 8299
−5 98,04 980,4 1561 31389 8466
0 100,00 1000,0 1628 23868 6536
5 101,95 1019,5 1700 18299 5078
10 103,90 1039,0 1771 14130 3986
15 105,85 1058,5 1847 10998
20 107,79 1077,9 1922 8618
25 109,73 1097,3 2000 6800 15000
30 111,67 1116,7 2080 5401 11933
35 113,61 1136,1 2162 4317 9522
40 115,54 1155,4 2244 3471 7657
45 117,47 1174,7 2330 6194
50 119,40 1194,0 2415 5039
55 121,32 1213,2 2505 4299 27475
60 123,24 1232,4 2595 3756 22590
65 125,16 1251,6 2689 18668
70 127,07 1270,7 2782 15052
75 128,98 1289,8 2880 12932
80 130,89 1308,9 2977 10837
85 132,80 1328,0 3079 9121
90 134,70 1347,0 3180 7708
95 136,60 1366,0 3285 6539
100 138,50 1385,0 3390
105 140,39 1403,9 vfd are used where intially the low
torque is needed and stator initiall torque must be high

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