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

The following measurements can be taken:

• 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 using the method of 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 5 has further special features such as:

• Continuously adjustable output voltage in voltage ranges 500, 1000, 2000, 5000 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 Pre-locating Device MVG 5
• Emergency-off switch NAG 1 for stand-alone operation
• For operation with Sheath Fault Pre-locating Device MVG 5:
• Emergency-off switch NAG 2