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.
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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