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OTHER HIGH POWER |
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HOME INTRO HISTORY PRODUCTS NEWS
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OTHER HIGH POWER |
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| LIQUID RHEOSTAT | LOAD CONTROL |
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| LIQUID RHEOSTAT FOR PLANT | LOAD BANK |
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กก
CRANE RESISTORS
RESISTOR FRAME STACKING
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Motion |
Motor Power (kW), 40%ED |
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Motion |
2.2 |
3.7 |
5.5 |
7.5 |
11 |
15 |
22 |
30 |
37 |
45 |
55 |
75 |
90 |
110 |
132 |
160 |
200 |
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Hoisting |
1 |
1 |
2 |
2 |
3 |
4 |
4 |
5 |
5 |
6 |
4+3 |
4+4 |
5+5 |
6+5 |
5+4+4 |
5+5+5 |
6+6+6 |
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Travelling Traversing |
1 |
1 |
1 |
2 |
3 |
3 |
3 |
4 |
4 |
5 |
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Motion |
Control Method |
Control Steps |
Remark |
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Hoisting |
R |
3, 4, 5 |
2ndary Resistance Control, Tst = 100% |
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S |
4, 5, 6 |
S.C Brake Control, Tst UP = 110%, Tst Down = 50% |
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E |
4, 5, 6 |
E.C Brake Control, Tst UP = 135%, Tst Down = 35% |
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D |
3, 4, 5 |
Dynamic Control, Tst UP = 120%, Tst Down = 35% |
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T |
3, 4, 5 |
Thyristor control, Tst UP = 200%, Tst Down = 100% |
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C |
3, 4, 5 |
Direct Control, Tst = 100% |
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Travelling |
R |
3, 4, 5 |
2ndary Resistance Control, Tst = 70% |
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P |
4, 5, 6 |
Plugging Control, Tst = 70%, Plugging Tp = 40% |
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T |
3, 4, 5 |
Thyristor Control, Tst = 100% |
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C |
3, 4, 5 |
Direct Control, Tst = 70% |
กก
OTHER RESISTORS
AC to DC and DC to AC conversion by thyristor-driven
converters and inverters is a common requirement
in uninterruptible power supplies, motor drives, speed controls and high
voltage transmission links between
unsynchronized distribution systems. Such devices act as sources of
undesirable harmonic currents. These
can be reduced to acceptable levels by passive filter circuits
incorporating inductors, capacitors and resistors.
Example: 3phase 24KV for a Subway Station
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©, RARA Electronics Corporation