The Megger HVB10 is a highly accurate high voltage (HV) bridge designed to locate cable and sheath faults, perform sheath testing, and pinpoint sheath faults. It is particularly suited for long HV cables.
With its top resolution, intermittent fault detection function, and load adaptation for faster cable charging, the HVB10 is an indispensable tool for all utilities that want to reduce downtime and facilitate the repair of power in, for example, pilot and communication cables.
The HVB10 has two different methods for fault locations, a standard mode, and a high-accuracy mode.
The standard mode provides good results for typical sheath faults with fault resistances of up to some hundreds of kilo Ohms and shieldS cross sections in the range of 25 to 50 mm2. This measurement is typically done in an app within 30 seconds
The high accuracy mode takes approximately 1 minute for the algorithm to complete but will use the full potential of the measuring and control circuits of the instrument. Thus, it is ideally suited for pre-locating 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. An Audio Frequency option is available.
The HVB 10 generates a dangerous voltage of up to 10 kV during HV operation. This is induced into the HV connection cable through the HV output.
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Output Voltage | 0 ... 10 kV DC, bi-polar |
---|---|
Output Current | 200 mA @ 0.5 ... 1.5 kV, 60 mA @ 5 kV, 30 mA @ 10 kV |
Max. Test Object Capacity | 25 μF |
Test Voltage | 0 ... - 10 kV |
Prelocation Method | Voltage drop method (automatic.) |
Accuracy | ± 0,1 % |
Pinpointing | 0 ... - 10 kV DC, pulsed |
Voltage | 0.5:1 / 1:2 / 1.5:0.5 / 1.5:3.5 |
Pulse Rate | 3 and 4.8 Hz for A-frame |
Supply Voltage | 88 V ... 264 V, 50/60 Hz |
DC Supply (charge only) | 12/24 V DC |
Battery | Int. NiMH battery (340 Wh) |
Battery Operating Time | approx. 2 hours |
Power Consumption | max. 500 VA |
Display | 320 x 240 pixel LCD, LED rear light |
Interfaces | USB port |
Storage | 2 GB Flash memory for System and data |
Data logging | by USB stick |
Operating Temperature | 25° C ... + 55° C, max. 93 % rel. humidity |
Storage Temperature | - 40° C ... + 70° C |
Dimensions (W x H x D) | 500 x 457 x 305 mm |
Weight | 25 kg |
Protection Class Acc. IEC 61140 | I (Protective earthing) |
Protection Class Acc. IEC 60529 | IP 53 (with closed lid) |