847H-DN2A A-B communication module
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IN STOCK847H-DN2A A-B communication module
The primary winding of the isolation transformer is rated for the voltage of the distribution system. It is connected to the distribution system by the incoming line power cables. The secondary windings of the isolation transformer are connected to the inputs of the power modules. The secondary winding voltage is typically 690V, to feed the low voltage power modules. There are between 9 and 27 three-phase secondary side windings, dependent on the motor voltage requirements. The phase relationship between the secondary windings are optimized to provide the highest reduction of line side harmonics. The isolation transformer’s three-phase primary coils are oriented C, B, and A from left to right, as viewed from the front. The secondary windings are also divided into three principal sections from top to bottom. The upper third are to feed the power modules in the U output phase. The middle third are to feed the power modules in the V output phase. The bottom third are to feed the power modules in the W output phase (Figure 11).
For drives with fixed-mounted power modules, the U and W phase interconnections to the isolation transformer secondary windings are on the front of the isolation transformer and the connections to the V phase are on the rear of the isolation transformer. The power cable connections to the power modules are made at the factory. Therefore, the field power cable connections need to be made at the isolation transformer secondary winding termination points (see 6000-IN006_-EN-P).
The structure and details of the product：
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