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KEWO EM-GJ Soft Starter
EM-GJ3 Digital Soft Starter
KEWO EM-GJ motor soft starter is a new type motor starting and protection device that is integrated with power electronic technology, microprocessor and automatic control. This soft starter is able to steadily start and stop motor without step change so as to avoid mechanical or electric impact resulted from using conventional starting modes such as direct starting, star-delta starting and auto voltage reducing starting, and effectively reduce starting current and distribution capacity for fear of more investment on capacity expansion.
Specification:
Control power: AC110V--220V+15%
Three-phase power supply: AC380V, 660V, 1140V±30%
Nominal current: 15A-----1000A, totally 22 kinds of rated values.
Applicable motor : General squirrel cage asynchronous motor .
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Item |
Description |
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Input Power Supply |
Input Voltage |
Three-phase 220V/380V/480V/660 AC |
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Frequency |
50/60Hz |
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Adaptive Motor |
Squirrel-cage three-phase asynchronous motor |
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Starting Times |
It is recommended not to exceed 20 times per hour. |
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Control Mode |
Operation panel control.(2) Operation panel + external control. 3) External control.(4) External control + COM control. (5) Operation panel + external + COM control.(6) Operation panel + COM control. (7) COM control. (8) No start or stop operation. |
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Start Mode |
(1) Current-limiting to start. (2) Voltage ramp to start. (3) Torque control + current-limiting to start. (4) Torque control + voltage ramp to start. (5) Current ramp to start. (6) Voltage current-limiting double closed-loop start. |
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Stop Mode |
(1) Soft stop. (2) Free stop. |
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Protective Function |
(1) Open loop protection for external instantaneous stop terminals. (2) Over-heat protection for soft starter. (3) Protection for too long starting time. (4) Input open phase protection. (5) Output open phase protection. (6) Unbalanced three-phase protection. (7) starting over current protection. (8) Running overload protection. (9) Under voltage protection for power voltage. (10) Overvoltage protection for power voltage. (11) Protection for fault parameter setting. (12) Load short circuit protection. (13) Auto restart or incorrect wiring protection. (14)Incorrect wiring protection of external control stop terminals. |
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Ambient |
Place to be used |
Indoor location with good ventilation free from corrosive gas and conductive dust. |
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Altitude |
Below 1000M. It have to rise the rate power when the altitude is more than 1000M. |
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Temperature |
-30 +55 oC |
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Humidity |
90%RH without dew condensation. |
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Vibration |
<0.5G |
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Structure |
Protection Class |
IP20 |
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Cooling Pattern |
Natural wind cooling. |
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KEWO EM-GJ Soft Starter Wiring and connection
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KEWO EM-GJ dimension and size
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The loading |
Voltage ramp starting time(s) |
Voltage ramp stopping time(s) |
Initial voltage |
Voltage ramp (current limit) |
Current limit to start |
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Ball mill machine |
20 |
6 |
60% |
400% |
350% |
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Fan |
26 |
4 |
30% |
400% |
350% |
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Centrifugal |
16 |
20 |
40% |
400% |
250% |
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Piston compressor |
16 |
4 |
40% |
400% |
300% |
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hoister |
16 |
10 |
60% |
400% |
350% |
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Stirring machine |
16 |
2 |
50% |
400% |
300% |
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Breaker |
16 |
10 |
50% |
400% |
350% |
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Screw compressor |
16 |
2 |
40% |
400% |
300% |
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Rotating conveyor |
20 |
10 |
40% |
400% |
200% |
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Light load |
16 |
2 |
30% |
400% |
300% |
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Convey belt |
20 |
10 |
40% |
400% |
250% |
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Heat pump |
16 |
20 |
40% |
400% |
300% |
