Pad-mounted transformer

Since all energized connection points are securely enclosed in a grounded metal housing, a padmount transformer can be installed in places that do not have room for a fenced enclosure.

Primary power cables may be connected with elbow connectors, which can be operated when energized using a hot stick and allows for flexibility in repair and maintenance.

The core and coils are enclosed in a steel oil-filled tank, with terminals for the transformer accessible in an adjacent lockable wiring cabinet.

The bayonet mount fuse protects against secondary faults and transformer overload and is a field replaceable device.

The use of a polymeric cable and load break elbows enable switching and isolation to be carried out in the HV chamber in what is known as a "dead front" environment, i.e., all terminations are fully screened and watertight.

Large pad-mount transformers supplying power to a computer data center. No live wires are exposed.
Padmounted transformers in Caguas, Puerto Rico.