3 PHASE AUTOMATIC CHANGEOVER SWITCH CIRCUIT DIAGRAM

HOW TO MAKE GENERATOR CONTROL PANELS

INSIDE A 3 PHASE AUTOMATIC CHANGEOVER SWITCH

 

This is a 3 phase changeover switch based on contactors solution. This is the most flexible choice when it is to standby generator in a range of 6KVA up to 200kVA.

The configuration of two contactors is a safe and reliable solution. It is mandatory to use, as a safety precaution, a mechanical interlock. This prevents the KG and KM to be simultaneously closed. This is theoretically impossible because we already use auxiliary contacts. But adding a mechanical interlock will add a superior level of protection. The expected life of the coil of the contactor is about 20 to 30 years. But you have to maintain the operating temperature as lower as possible. The ambient temperature inside the panel over 50 degrees Celsius may reduce the life of the coil. For this reason, we recommend that you store inside the panel a spare coil. In case of failure, you can replace the coil in a few minutes. We always recommend 230V coils instead of 400V coils.

 

[1] UTILITY POWER CONTACTOR [2] GENERATOR CONTACTOR [3] TERMINAL BLOCKS [4] CRs [5] ENGINE CONNECTIONS [6] ATS CONNECTION [7] EMERGENCY SWITCH [8] RELAY CONNECTIONS [9] IP65 STEEL COATED PANEL [10] CIRCUIT BREAKERS [11] INTERFACE BOARD

 

INSIDE A 3 PHASE AUTOMATIC CHANGEOVER SWITCH


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