| 摘要 |
<p>Subject of the invention refers to the field of surge protection of varistor elements by universal surge arrestor device, consisting of a supporting cover (8) with built-in electrode (10) and switching electrode (14). By switching the arrestor spring (6) of special shape the electrode disconnects the protected varistor from the network in cases of damage following overheating. It helps to eliminate problems connected to the power supply and can also solve problems of protecting other devices connected to the same circuit, and exposed to overvoltages. Inside the supporting cover (8) there is an additional signal electrode (12) which provides the universal surge arrestor with the possibility of signalling the error.</p> |
