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COUPLING CIRCUIT WITH SWITCHING FUNCTION FOR COUPLING AN INSULATION MONITORING DEVICE TO AN UNEARTHED POWER SUPPLY SYSTEM
COUPLING CIRCUIT WITH SWITCHING FUNCTION FOR COUPLING AN INSULATION MONITORING DEVICE TO AN UNEARTHED POWER SUPPLY SYSTEM
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机译:带有开关功能的耦合电路,用于将绝缘监测装置耦合到未安装的电源系统
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摘要
A coupling circuit (20) with switching function for coupling an insulation monitoring device (6, 6a, 6b) to an unearthed power supply system (2, 2a, 2b), consisting of a coupling module (22) or a plurality of identical coupling modules (22) connected in series, wherein the coupling module (22) has at least one switch unit (25), which comprises a coupling impedance (26), a switch (24), arranged in series to the coupling impedance (26), for mains disconnection and a control circuit (28) for controlling the switch (24), and also exactly one transformer (30) for voltage supply and for potential separation.
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