首页>
外国专利>
Protection circuit for resistive heating element using differential current transformer and small short circuit bias current in conjunction with relay
Protection circuit for resistive heating element using differential current transformer and small short circuit bias current in conjunction with relay
展开▼
机译:差动电流互感器和小短路偏置电流与继电器配合使用的电阻加热元件保护电路
展开▼
页面导航
摘要
著录项
相似文献
摘要
A small bias current is supplied through resistor 132. If earth leakage occurs current difference transformer 126 and other circuit elements release power from relay 131 so that switch 124 opens. If a fault develops current through resistor 132 is not sensed and the circuit elements prevent switch being reactivated.
展开▼