SELF TESTING FAULT CIRCUIT APPARATUS AND METHOD
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Accused Products
Abstract
A process for self testing a fault circuit includes disabling an actuator, performing a self test by creating a simulated fault signal across at least a portion of a half cycle of a first polarity and across at least a portion of a hall cycle of a second polarity, and determining whether the self test was successful.
27 Citations
76 Claims
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1-34. -34. (canceled)
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35. A process for self testing a fault circuit comprising:
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a) disabling an actuator; b) performing a self test by creating a simulated fault signal across at least a portion of a half cycle of a first polarity and across at least a portion of a half cycle of a second polarity; and c) determining whether the self test was successful. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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64-70. -70. (canceled)
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71. A method for testing a fault circuit comprising the following steps:
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a) periodically preventing an actuator from activating; b) activating a self test by creating a current imbalance, which occurs across at least two different half cycles of opposite polarity; c) testing a fault circuit by reading said current imbalance.
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72-74. -74. (canceled)
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75. A method for testing a fault circuit comprising:
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periodically outputting a circuit hinder signal to hinder a disconnect signal from a fault detector circuit, the circuit hinder signal being output at a first period of time; outputting a test signal to said fault detector circuit only if the circuit hinder signal is output, the test signal testing said fault detector circuit; receiving from said fault detector circuit an output signal in response to the test signal when said fault detector is operative; and activating an alarm during a second period of time if the output signal is not received during said first period of time.
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76-77. -77. (canceled)
Specification