APPARATUS AND METHOD OF DETERMINING INSULATION RESISTANCE IN AN UNGROUNDED MOBILE VEHICLE ELECTRICAL BUS SYSTEM
First Claim
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1. An insulation resistance detection system for use with a vehicle having a chassis, the system comprising:
- an electrical power source;
an electrical system electrically isolated from the chassis; and
a detection circuit powered by said power source, said detection circuit including a resistor electrically connected to the chassis, said detection circuit measuring a voltage across said resistor to thereby determine the insulation resistance between said electrical system and the chassis.
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Abstract
An insulation resistance detection system for use with a vehicle having a chassis. The system includes an electrical power source, an electrical system, and a detection circuit. The electrical system is electrically isolated from the chassis. The detection circuit is powered by the power source. The detection circuit includes a resistor electrically connected to the chassis. The detection circuit measures the voltage across the resistor to thereby determine insulation resistance between the electrical system and the chassis.
30 Citations
21 Claims
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1. An insulation resistance detection system for use with a vehicle having a chassis, the system comprising:
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an electrical power source; an electrical system electrically isolated from the chassis; and a detection circuit powered by said power source, said detection circuit including a resistor electrically connected to the chassis, said detection circuit measuring a voltage across said resistor to thereby determine the insulation resistance between said electrical system and the chassis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of detecting an insulation resistance of an ungrounded mobile electrical system associated with a vehicle, the method comprising:
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supplying power to a detection circuit; alternately applying two DC voltage levels from said detection circuit through an isolation circuit to an isolated electrical system; measuring an electrical value across an electrical component by said detection circuit, said electrical component being electrically connected to a chassis of the vehicle; and determining the insulation resistance between said isolated electrical system and said chassis from information obtained in said measuring step. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification