Application for On-load tap-changers (OLTC)

On-load tap-changers (OLTC) are mechanical devices that help keeping the transformer output at a relatively constant voltage regardless of the changing current required by the load. If an OLTC fails, the entire transformer will be out of service. To minimize the risk of fire or explosion resulting from an internal failure, we provide a full range of protective accessories compliant with the tap-changer international standards. 

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