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High voltage corona shield
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Voltage sensing and load measuring automatic reclosing system for d-c circuit breakers
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Segmented circuit breaker housing with rotatably adjustable bushing positions
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Underwater gas-insulated cable with plural internal pressures
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Puffer interrupter with arc energy assist
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Dead tank housing for high voltage circuit breaker employing puffer interrupters
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Capacitor voltage and trip coil impedance sensor with high voltage isolation
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Liquid SF6 interrupter with arc energy driven piston and contact
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Liquid SF6 interrupter with proportional feedback
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Quick open and close disconnect switch
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Self-powered ammeter
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Arc spinner with magnetically driven puffer
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