pole-mounted transformer

Electric current flows along the primary conductors to pole-mounted transformers.

For pole-mounted transformers this usually takes the form of a 'fused cutout'.

Pole-mounted transformers often include accessories such as surge arresters or protective fuse links.

These small, pole-mounted transformers contain mineral oil, not PCBs.

Ancillary equipment will include distribution lines and pad or pole-mounted transformers to connect the wind plant to the utility's 25 kV line.

Historically, pole-mounted transformers were filled with a polychlorinated biphenyl (PCB) liquid.

Pole-mounted transformers may have lugs allowing direct mounting to a pole, or may be mounted on crossarms bolted to the pole.

These normally carry electricity at 11 or 33 kV (three phases) from 132 kV substations supplied from pylons to distribution substations or pole-mounted transformers.

Owners with large numbers of pole-mounted transformers in their inventories will find that the cost of testing and retrofilling can be as much as double these prices. These costs include the cost of chemical treatment of the PCBs in the contaminated oil.

For example, in the US a pole-mounted transformer in a suburban setting may supply 7-11 houses, whereas in the UK a typical urban or suburban low-voltage substation would normally be rated between 315 kVA and 1 MVA and supply a whole neighborhood.