2014年11月23日星期日

Current transformer - use matters needing attention

115/120 V AC Voltage and Three-phase Phase small 240v electric motor
Specifications
1.Specifications1.3-phase asynchronous motors 
2.IEC standard 
3.OEM 
4.Voltage:50HZ &60HZ;380V&415V 

5.Protection class: IP54 
Operation of the current transformer, vice edge is not allowed to open. Because once open, have ac electric motor become primary side current excitation current, the magnetic flux and vice side voltage more than normal and endangers one's personal and equipment safety. Therefore, vice edge is not allowed to answer the fuse in the circuit, current transformer are not allowed in the runtime removed without bypass current meter, relay and other equipment. The connection mode ANP gost motor of current transformer load according to the receive operation requirement. The connection mode of the most commonly used for single-phase, three-phase star and incomplete star. Rated than the rating of the transformer and error change ratio KN refers to the rated voltage of the voltage transformer ratio Three phase motor and rated current of the current transformer ratio. The former is defined as the original winding rated voltage U1N and deputy while winding, the ratio of the rated voltage U2N; The ratio of the latter for rated current I1N to I2N.

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