Tap changers

The regulation and variation of the primary voltage are carried out by external switching with a linear type no load tap changer for the oil transformers, with switching board on the front side of the coil for dry type transformers (off load) or by load switches that allow switching with the machine in service (on load).

The on load tap changers (OLTC) are equipped with all accessories according to specific customer requirements.

Switching can be guaranteed with the vacuum or oil bath contact.