The Sheath Tester MMG 10 is mainly designed for voltage testing of cable sheaths made of PE or PVC as well as for the location of sheath faults on shielded plastic-insulated cables and the detection of earth-leakage faults in plastic-sheathed cables. In combination with the Sheath Fault Pre-location Device MVG 5, sheath faults can be pre-located.

The following measurements can be taken with the MVG 5:

• Sheath fault pre-location on shielded medium-high voltage cables
• Pre-location of line-to-earth faults on plastic-insulated low-voltage cables

Pin-Pointing is carried out by means of the Line-to-Earth Fault Locating Device ESG 80-2 by measuring the step voltage. Due to the excellent burn down effect achieved by the full-wave rectification, this device is very well suited for converting high-resistance cable faults in low-voltage power cables into low-resistance ones.

Moreover our new Sheath Tester MMG 10 has further special features such as:

• Continuously adjustable output voltage in voltage ranges 1000 V, 5000 V and 10000 V
• Protection against overload by voltage and current control
• Fault location at reduced power to prevent damages to adjacent wires or cables
• Indication of voltage and current by two analog indicating instruments
• Automatic discharge unit provides for removal of residual charge and for earthing the test object
• Clock-controlled operation of the voltage source to prevent the drying-out of faults when pinpointing sheath faults
• Excellent burn down effect through full-wave rectification

Accessory equipment:

• Earth Fault Locating Device ESG 80-2
• Earth spikes with measuring leads EEB
• Sheath-Fault Prelocating Device MVG 5 (Pre-location up to 5 kV)
• Emergency-off switch NAG 1 for stand-alone operation
• For operation with Sheath Fault Pre-locating Device MVG 5:
• Emergency-off switch NAG 2