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US5363088A
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Voltage monitor for alternating current power system
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US5180972A
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Housing including biasing springs extending between clamp arms for cable mounted power line monitoring device
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US5220311A
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Direction indicating fault indicators
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US5274324A
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Hot line mountable hotline indicator having liquid crystal display with resettable memory function
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US5070301A
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Fault indicator having liquid crystal status display
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US5095265A
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Circuit status indicator having liquid crystal display
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US5077520A
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High impedance voltage indicator having capacitive voltage divider
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US5008651A
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Battery-powered fault indicator
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US5153565A
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Fault indicator having electrostatically-actuated indicator flag
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US4873706A
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Electromechanical pulse counter
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US4794331A
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Circuit condition monitoring system having integral test point
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US4795982A
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Fault indicator having delayed trip circuit
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US4794329A
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Cable mounted capacitively-coupled circuit condition indicating device
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US4714916A
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Voltage loss detector
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US4794332A
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Fault indicator having improved trip inhibit circuit
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US4706016A
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Surge detector having distributed line inductance pickup
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US4641220A
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Test point mounted voltage monitoring system
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US4646006A
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Clamp mechanism for power line mounted monitoring device
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US4686518A
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Fault indicator having trip inhibit circuit
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US4550288A
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Voltage loss sensor and alarm
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