This photo shows some of Elcom's local troops at work in Himitovi substation, the 66,000 volt transmission switching station which took power from the nearby Ramu hydro station and fed it to the customers in nearby Goroka.
In this case, part of the 66,000 volt switchyard was isolated for some maintenance work, otherwise these guys would not be standing up there! The big round things at the left are Current Transformers which measure how many amperes are flowing throught this particular path and they feed that information to protective relays that are watching to see if lightning or anything else hits the line. The smaller thing the worker is resting his arm on is a Circuit Breaker (just a bigger version of the ones in your home fuse/breaker panel) which is designed to open up to cut off the current flow when it is told to by automatic devices, such as the relays. The smaller insulators on the pedestal, behind the big metal tube, are holding the movable blades of a Disconnect Switch. These blades have been manually swung open to allow safe work access to the equipment.
Notice the mountains rising up behind the substation.
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on Aug 19, 2005
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