Frequency conversion and power frequency switching circuit air -cooler
The utility model relates to a frequency conversion and power frequency switching circuit air -cooler, include: the cabinet body, the internal circuit breaker QF that is equipped with of cabinet, current transformer CT, converter UF, motor M, load switch and change over switch KK, circuit breaker QF...
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| creator | CHEN WEI MENG QINLONG DING DAQING |
| description | The utility model relates to a frequency conversion and power frequency switching circuit air -cooler, include: the cabinet body, the internal circuit breaker QF that is equipped with of cabinet, current transformer CT, converter UF, motor M, load switch and change over switch KK, circuit breaker QF is crossed to the bus power -on and current transformer CT inserts in the whole circuit, the input of converter passes through air switch QF2 and is connected with the electric wire netting, the output of converter is connected to the motor through air switch QF4, converter input/output end is equipped with ac contactor KM1 and KM2 respectively, the power input end loops through air switch QF3, ac contactor KM3 and load switch are connected with the electric wire netting, power frequency return circuit X A2 and frequency conversion return circuit X A1 passes through change over switch KK parallel connection, is the parallelly connected back of input in power frequency return circuit and frequency conversion return |
| format | Patent |
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| language | chi ; eng |
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| subjects | CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION |
| title | Frequency conversion and power frequency switching circuit air -cooler |
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