Loop resistance measuring instrument
The test instrument is used to measure earth-fault loop impedances and line impedances.
• 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
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