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What is the purpose of an overhead disconnect switch?
For switching and isolating of feeder circuits
What System Operating Order describes the capabilities and limitations of the various overhead switch types?
System Operating Order 2T-27 (Feeder Switching and Paralleling) describes switch capabilities and limitations
What is a pothead disconnect switch?
Single-pole, non-load-break disconnect switches located on poles where the primary underground feeder cables terminate and make the transition to the overhead feeder section, or on a dip/reverse dip.
What is required to operate an in-line disconnect switch?
ILDS are single-pole, non-load-break switches that can be operated with a load-buster tool.
What is a SCADA switch?
Supervisory Control and Data Acquisition (SCADA) Switches
Are designed to be remotely controlled from the Control Centre
They are equipped with sensors that provide information to the Control Centre
What is a load-buster tool?
A tool used for operating devices that has a current interruption rating of 600 amps on single- or three-phase overhead circuits up to 34.5 kV. The interruption capability for line and cable de-energizing is restricted to 83amps at 25 kV or 1200 kvars per phase.