TN-S-/TT-System

Why residual current monitoring?

Information advantage – a key success factor

A comprehensive readiness for operation around the clock, constant competitive pressure and high cost pressure require the highest degree of electrical safety in the power supply of industrial, functional and residential buildings. With continuous monitoring of safety-relevant circuits for fault currents, residual currents and stray currents, incipient critical operating states are detected at an early stage. A potential risk of personal injury, fire damage and material damage as well as EMC interferences can thus be avoided.

The benefits at a glance:

  • Preventive electrical safety for man and machine
  • High availability of power supply systems
  • Reducing EMC interferences
  • Time and cost-optimised maintenance
  • Significant reduction of operating costs and cost risks
  • Saving potential thanks to periodic verification according to the German Social Accident Insurance (DGUV) regulation 3

Information advantage in earthed systems

Benefit from residual current monitoring

Optimised maintenance

  • Immediate information by centralised or distributed alarm messages
  • Optimum planning of time and personnel resources through complete documentation and precise indication of the fault location
  • Fast, preventive intervention by remote diagnostics and remote administration via LAN or WAN network

Increased fire protection

  • Detecting potential fire hazards caused by high fault currents as soon as they occur
  • Signalling N conductor overload or interruption at an early stage
  • Preventing material damage due to unintentional displacement of the star point caused by N conductor interruption
  • Avoiding consequential costs resulting from material and ecological damage

Higher operational and system safety

  • Preventive safety for the protection of man and machine against the hazards of electric current
  • Risks of failure due to unexpected operation of safety devices are kept to a minimum
  • Monitoring systems and devices continuously for insulation deteriorations instead of spot checks at long intervals
  • Detecting potential faults in newly installed electrical systems or during the commissioning of new devices immediately
  • Additional safety by monitoring TN-S systems for unwanted N-PE connections
  • Alarm messages either for signalling or switching off

Improved economic efficiency

  • Reducing maintenance and operating expenses considerably
  • Avoiding expensive and unplanned system downtimes through information at an early stage
  • Higher productivity through increased operational reliability
  • Saving of costs through lower insurance premiums
  • Assistance for investment decision by detecting weak points in the electrical installation

Comprehensive information

  • Clear information centrally indicated on an LC display
  • Transparency of all safety-related information through data transfer via bus systems and integration into LAN/WLAN networks
  • Easy integration into facility management systems via field bus, OPC and Ethernet (TCP/IP)
  • Cost reduction through the use of existing communication architecture (Ethernet)

Safe power supply – in all areas

The range of application of residual current monitors and systems extends from data centres, banks, insurances and office buildings, hospitals, traffic engineering to energy supply and distribution, broadcasting stations, communication technology systems and continuous production processes.

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Products

Insulation fault location

ISOSCAN® EDS440
ISOSCAN® EDS440

Insulation fault locator for localisation of insulation faults in main circuits

Insulation fault location

ISOSCAN® EDS440
ISOSCAN® EDS440

Insulation fault locator for localisation of insulation faults in main circuits

Details

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