VOLTAGE INDICATOR TEST MECHANISM
First Claim
1. An electrical safety monitor, comprising:
- line inputs for an L1, an L2, an L3, and a GND three-phase connections;
a line monitoring circuit having a plurality of light indicators and configured to produce light if voltage exists between any two of the line inputs to thereby indicate presence of voltage to a user;
a current generating circuit electrically connected to the line monitoring circuit and adapted to generate a test current to the line inputs to transition the device from dead to live thereby allowing the user to discern between a failure state of the line monitoring circuit and an off state of the line monitoring circuit.
3 Assignments
0 Petitions
Accused Products
Abstract
An electrical safety monitor includes line inputs for an L1, an L2, an L3, and a GND three-phase connections, a line monitoring circuit having a plurality of light indicators and configured to produce light if voltage exists between any two of the line inputs to thereby indicate presence of voltage to a user, and a current generating circuit electrically connected to the line monitoring circuit and adapted to generate a test current to the line inputs to transition the device from dead to live thereby allowing the user to discern between a failure state of the line monitoring circuit and an off state of the line monitoring circuit. The current inducing circuit can include a magnet which induces the test current, stored energy, a photocell, an electroactive material or other means for generating the test current.
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Citations
22 Claims
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1. An electrical safety monitor, comprising:
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line inputs for an L1, an L2, an L3, and a GND three-phase connections;
a line monitoring circuit having a plurality of light indicators and configured to produce light if voltage exists between any two of the line inputs to thereby indicate presence of voltage to a user;
a current generating circuit electrically connected to the line monitoring circuit and adapted to generate a test current to the line inputs to transition the device from dead to live thereby allowing the user to discern between a failure state of the line monitoring circuit and an off state of the line monitoring circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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- 10. An improvement to an electrical safety monitor having a line monitoring circuit for monitoring L1, L2, L3, and GND three-phase line connections and a plurality of indicators for communicating presence of voltage between any of the line connections, the improvement comprising a current inducing circuit electrically connected to the line monitoring circuit and adapted for generating a test current upon activation by a user to transition the line monitoring circuit from dead to live thereby allowing the user to discern between a failure state of the line monitoring circuit and an off state for the line monitoring circuit.
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19. A method for providing electrical safety monitoring, comprising:
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providing an electrical safety monitor having a plurality of solid-state light emitting diodes configured to indicate presence of voltage;
generating a test current to transition the electrical safety monitor from a dead state to a live state to thereby allow a user to discern between a failure state and an off state. - View Dependent Claims (20, 21, 22)
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Specification