• Gossen Metrawatt


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Item number: M507A

Loop resistance measuring instrument

The test instrument is used to measure earth-fault loop impedances and line impedances.

  • Loop resistance measuring instrument

Product Highlights

  • Table of common protective devices can be displayed
  • Digital display, backlit color OLED display, switching between brief and detailed representation
  • LED for measurement point illumination
  • Patented test probe retainer
  • Compact and rugged – for service calls under harsh conditions and laboratory use
  • Technical characteristics

    The measuring range of 0 to 200 Ω (0.27 Ω to 200 Ω per VDE 0413 / EN 61557) permits calculation of short-circuit current from 0 to 23 kA.

    The following measurements can be performed with the METRALINE Z-CHECK:

    • Fault loop impedance with short-circuit current
    • Fault loop impedance with short-circuit current without tripping the RCCB
    • Line impedance with short-circuit current
    • Line voltage • Phase detection


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