f ABB Relay Insulation monitoring relay CM-LWx- A&S Automation Co., Ltd
 
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The insulation monitoring relays of the CM-IWx range guarantee a continuous insulation monitoring of an IT system. The devices recognize insulation faults as they develop and trip immediately if the value has fallen below the minimum set threshold (1-200 kOhm). This ensures a reliable operation of the system and prevents operational interruption caused by a second, more severe, insulation fault which may lead to a short circuit tripping the main circuit breaker.Main benefits:Down-time reduction; Safe and reliable operation; Easy to install\Main features: Monitoring of system voltages up 1000 V DC and 690 V A; Monitoring of system leakage capacitances up to 2000 µF; All kind of systems can be monitored: 2-wire, 3-wire, 4-wire as well as battery systems; Prognostic measuring principle; Interrupted wire detection configurable; Non-volatile fault storage configurable

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