Loop Resistance Measuring Instrument

The METRALINE Z-CHECk allows measurement of fault loop impedances and line impedances.
The measuring range from 0 through 200 Ω (0,27 Ω through 200 Ω per VDE 0413 / EN 61557) allows short-circuit current calculation from 0 through 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


  • 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 means of securing test probes
  • Compact and rugged - for service calls and laboratory use


  Article No: M507A
Icon Technical Data » D » GB » PL (pdf 151 kB)
Icon Operating Instructions » D » GB » F (pdf 487 kB)
Icon Operating Instructions » I » E » NL
Short-form Operating Instructions D-GB (pdf 267 kB)
Icon Pamphlet » GB » RU (pdf 1736 kB)