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Control voltage circuits must be monitored for electrical safety; after all, an undetected electrical fault is as significant as unexpected system downtime and also significantly increases the fire risk. At the same time, unplanned service interventions can be expensive and time-consuming. Some power plant insurers also demand effective condition monitoring systems. The Bender condition monitoring system gives you a clear overview of all the relevant data for your system.

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All kinds of power plant use generators which convert mechanical energy into electrical energy. Therefore, operating them reliably is crucial for a functional energy supply. All insulation in electrical machines is subject to ageing processes. Permanent insulation monitoring can determine the condition of the insulation of your machine. This protects you from surprises. The contacting is either direct (stator) or via collector rings (rotor). Potential problems and risks can easily be recognised. For example, the excitation system is causing high levels of harmonics which generate incorrect readings in many conventional insulation measuring devices. An ISOMETER® from Bender considers these problems during insulation measurement.

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Continuous insulation monitoring of de-energised loads plays a decisive role in damage prevention. Crane systems, fire extinguisher pumps, pusher drives, etc. are often only used occasionally or in an emergency - but that is exactly when they need to work flawlessly. Bender offline ISOMETER®s permanently monitor de-energised systems, reporting insulation faults early and thus providing perfect protection against critical situations.

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The VMD258 analogue voltage relay monitors three-phase AC systems for under and overvoltage (window function). It does not need a neutral point connection and is therefore suitable for all 3AC systems. The supply voltage of the electronics is taken from the system to be monitored. The supply for the electronics, the relays and the connection for the external energy store are separated from the system with dual insulation. Special input transformers muffle the transfer of interference factors from the system. The response values for under and overvoltage and for response delays can be adjusted to any level.

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