| 摘要 |
Circuit for measurement of static ignition voltage and leakage current, in particular of a valve arrester, containing a voltage and leakage current meter connected to a valve arrester and to the high-voltage measurement capacitor of a voltage divider connected to a test transformer, characterized in that it contains two induction coils (L1 and L2), whose second ends are connected respectively to the voltage input (Wu) and current input (Wi) of the voltage and leakage current meter (M), while the first ends of the induction coils (L1 and L2) are connected to each other via an overvoltage limiter, preferably a varistor (O1) made of metal oxides, while the first end of the first coil (L1) is connected to the high-voltage measurement capacitor (C) and via a second overvoltage limiter, preferably a varistor (O2), to the earth of the measurement circuit, and the first end of the second coil (L2) is connected via a third overvoltage limiter, preferably a varistor (O3), to the earth of the measurement circuit, and is also connected to the tested arrester (Odg).<IMAGE>
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