Testing, diagnostics and fault location on power cables
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Testing, diagnostics and fault location on power cables Find all your cable faults and maintain your network to prevent outages.

We are setting the standards We are the world’s leading provider of measurement technology in the field of cable fault location, testing and diagnostics. In order to increase the reliability of your cable networks and systems, our products offer the highest level of accuracy, innovative technologies and unique userfriendliness and reliability. Our systems find cable faults that cannot be detected by other devices and thus ensure maximum security of supply and reduced costs. Cable test van systems – designed for your needs. System descriptions from page 52 onwards

CABLE TESTING Megger’s cable test solutions are comprehensive, with a focus on portability, usability and reliability. Cables can be highly capacitive, so testing the insulation at a standardized test frequency of 0.1 Hz often requires a significant power output from the test equipment. Many cable test systems are therefore quite large as a result. Our experience in testing, knowledge of cables and cable test methods fuel our designs to address this, resulting in the most efficient solutions and best-in-class performance.

FEATURES ■ Wide range of VLF systems for all type of applications ■ Testing in accordance to international standards and guidelines such as IEEE 400.2 and IEC 60502-2 ■ VLF, DC and sheath testing in one unit ■ Expendable with tan delta or partial discharge (PD) measurement ■ Maximum user-safety through automatic discharge of test object and earth-loop monitoring Very Low Frequency test sets are used to verify the dielectric integrity of the cable under test, be it for commissioning/ acceptance testing or for maintenance testing. VLF Sineoidal and VLF Cosine Rectangular (CR) are the two most...

VLF SINE 34 kV The VLF Sine 34 kV is a compact, robust and portable VLF sine wave test system for medium voltage cables. With its output voltage of 34 kVpeak it is ideally suited to perform withstand testing on cables rated up to 15 kV. For diagnostic applications it is suited for cables up to the 23 kV class. ■ High test capacity of 5 µF at maximum test voltage ■ Single-button operation ■ Integrated safety system ■ Continuous duty-cycle VLF SINE 34 Datasheet VLF SINE 45 kV The VLF Sine 45 kV, with optional integrated tan delta, is a compact system for commissioning and condition analysis...

FEATURES ■ VLF test, DC test and sheath test in one device ■ High test capacity for standard-compliant testing of all three phases at the same time ■ Integrated discharge system and breakdown detection ■ Leakage current measurements for evaluation of the cable insulation quality ■ Expendable to a full PD diagnostic system via the PDS 60 PD coupler ■ Optional: Transport case available for offshore use VLF CR (cosine-rectangular) is a Megger patented waveform approved by IEC & IEEE. Portable VLF CR models can test high capacitances up to 5 |jF @ 0.1 Hz, and are suitable for testing longer...

VLF CR 28…60 kV The portable VLF CR systems VLF CR 28…60 kV are high power test sets that allow standard compliant testing at 0.1Hz. Aside from cable and sheath testing, the test systems can also be used for precise pinpointing of sheath faults. The VLF CR 28 is suited for cables rated up to 15 kV, the VLF CR 40 up to 23 kV and the VLF CR 60 up to 36 kV. ■ High test capacity at standardized frequency of 0.1 Hz ■ Portable thanks to two part design ■ Can be expanded to a PD diagnostic system with the PD coupler PDS 60 ■ Integrated discharge system The VLF CR system VLF CR 60-HP is a high...

CABLE DIAGNOSTICS The main goal of Megger diagnostic technologies is to avoid service interruptions during network operation in medium voltage, high voltage and extra high voltage cable systems. Service interruptions are primarily caused by damage to the cable resulting from poor cable laying, workmanship failures on accessories and age-related deterioration in joints, terminations and cable insulation. With Megger diagnostic systems, it is possible to verify the quality of a new cable system and assess its condition before a cable is put into operation. Potential issues and damage caused...

RECOMMENDED ACCESSORIES MV DAC-30PD diagnostics system for medium voltage cables Diagnostic connection set and test bushings Transport cases PD-free connection cable FEATURES ■ Safest operation thanks to fully isolated design ■ Uses well proven DAC excitation voltage for PD measurements ■ Real-time data evaluation and display of results ■ Two part design for easy transportation ■ Ideally suited for cables rated up to 23 kV Partial discharge (PD) activity is an indication of an incipient fault in the insulation and is one of the best "early warning" indicators of deterioration in medium and...

TDS NT SERIES High power test & diagnostics combination for MV cables ■ Two proven voltage wave shapes, VLF CR and DAC, in one device ■ High test capacitance enables standard compliant VLF 0.1 Hz cable testing and diagnostics on long cables or multiple phases in parallel ■ Non-destructive PD diagnostics by means of proven DAC voltage (acc. IEEE 400.4) ■ 50/60 Hz slope technology for a direct comparison with the power frequency ■ Two-piece design allows for portable and easy transport ■ Leakage measurement ■ Real-time data evaluation and display of results Network operators can now get...

TDM SERIES High power test & diagnostics combination for MV cables ■ Cable testing, cable diagnostics and sheath testing in one device ■ Available in two voltage levels and different application packages ■ Portable as well as van-mount version ■ Enables standard compliant high power VLF testing at 0.1 Hz (up to 7.8 µF @ 36 kV RMS and 5 µF @ 54 kVRMS) ■ Internal tan delta measurement with automatic result interpretation according IEEE 400.2 ■ PD diagnostics using VLF sine wave, Damped AC or 50/60 Hz Slope technology voltages ■ Real-time data evaluation and display of results ■ PD and TD...