| 摘要 |
An electrical bypass apparatus (10) comprises: first and second terminals (12,14) for connection across an electrical component (52); an electrically-triggered bypass switch (16) being switchable to form a short circuit across the first and second terminals (12,14); and a first control circuit (18) connected between the first and second terminals (12,14), the first control circuit (18) including mutually coupled first and second windings (26,28), the first winding (26) being isolated from the second winding (28), the first control circuit (18) being configured to: inhibit a current flowing between the first and second terminals (12,14) from flowing through the first winding (26) when a normal operating voltage is present across the first and second terminals (12,14); and permit a current to flow between the first and second terminals (12,14) and through the first winding (26) when an overvoltage is present across the first and second terminals (12,14) and thereby induce a current pulse in the second winding (28), wherein the second winding (28) is electrically coupled to the electrically-triggered bypass switch (16) such that the current pulse induced in the second winding (28) acts as a switching control signal to close the electrically-triggered bypass switch (16) and thereby form the short circuit across the first and second terminals (12,14). |
