UPPCO 138/69-kV Atlantic Mine Substation



The Atlantic Mine Substation is a new sub near Atlantic Mine (about 5 miles from Houghton). It is a 138/69-kV 30-MVA sub that ties together the substations at Ontonagon, Mass City, Winona, and M-38. It is an old sub, but has examples of mechanical relay protection systems, controls, communications, high voltage, e-mag related design, etc.

Thanks to Uppco and Bill Nelson for this tour.
Group Picture

This is a picture of the 1999 PES Sub Tour Group.

Bus Setup

Here we are learning about how the bus is set up
and how switching is done.

Capacitor Bank

Here is a group of capacitor banks totalling 3600 kVAR's per phase.

Transformer

Here is a 50 MVA, 138/69 kV transformer.

Circuit Breaker

Here is a switch leading from the capacitor banks.

SF6 Breaker

This is an SF6 circuit breaker. The components of the
control box are being explained.

Grounding Wire

This picture shows the importance of grounding each
device in the substation to the grounding system of the
station.