On & Off Load Tap Changer Repair / Refurbishment


Distribution transformers are extremely reliable, but occasionally oil analysis highlights an internal fault developing. Often the fault is occurring on the Off Circuit Tapping Switch (OLTS or OLTC).

Rosh Engineering can either replace the switch or engage the switch on a fixed tapping, removing the likelihood of any future faults developing at this point.

Larger transformers with on-load tap changers require regular maintenance. Works can be carried out on site to a range of different manufacturers tap changers, including fitting of new parts and replacement of insulating oil.

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