| 摘要 |
FIELD: electrical engineering. ^ SUBSTANCE: proposed protective device has voltage-sensing heating unit that functions to release heat when potential difference between its both ends exceeds desired level and heat-sensing unit whose current ON/OFF operation is invertible function of temperature. Heat-sensing unit is connected to voltage-sensing heating unit so that it detects heat released by voltage-sensing heating unit. ^ EFFECT: improved characteristics of protective device. ^ 15 cl, 14 dwg |
