The Megger HVB10 High-Voltage Bridge is a highly accurate high-voltage bridge designed to locate cable and sheath faults, perform sheath testing, and pinpoint sheath faults, especially suited also for long HV cables. With its top resolution, intermittent fault detetion function, and load adaptation for faster cable charging, the HVB10 is an indispensable tool for all utilities that want to reduce downtime and facilitate repair of power and for example pilot and communication cables.
Automatic test sequences are supported, and these guide the user step-by-step through the correct testing procedure. Extensive safety features are also built in, which inhibit the test sequence if the cable capacitance is too high for the instrument to discharge safely, or if the test leads have been connected incorrectly.
The HVB10 high-voltage bridge is supplied in a strong durable IP54 PELI trolley case that provides dependable protection and ensures easy handling. It can be powered either from its internal battery, which can be recharged either from the mains or from a vehicle electrical supply, or direct from a standard 50/60Hz mains supply.
Megger HVB10 Features:
- Top class measurement and accuracy
- Automatic test sequence
- Bi-polar prelocation for the elimination of external influences
- Detection and indication of wrong connections
- Only one HV connection cable
- Completely independent of the parameters of auxiliary lines
- easyGo operating system
- Intuitive user interface with large backlit touchscreen
The HVB10 has two different methods for fault location:
The standard mode, which provides good results for typical sheath faults faults with fault resistances of up to some hundreds of kilo Ohms and shield cross sections in the range of 25 to 50 mm2. This measurement is typically done in app 30 seconds
The high accuracy mode, which takes approximately 1 minute for the algorithm to complete, but will utilize the full potential of the measuring and control circuits of the instrument. Thus, it is ideally suited for prelocating difficult, high-resistive faults (e.g. in the inner insulation of PILC cables). An intermittent fault detection algorithm is applied to gain a result under even worse conditions with sparking faults.