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Harbey Hubbell, Incorporated Patents |
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Assignee: Harbey Hubbell, Incorporated
Address: Bridgeport, CT
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4091431 |
Ground leakage relay circuit |
May 23, 1978 |
| A ground leakage relay circuit including a core balance transformer through which pass the supply and return line of the circuit to be protected and having a multi-turn secondary winding. A capacitor is connected to be normally charged from a d.c. source. A normally conducting transistor |
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