The 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.
| Key Features |
| Top class measurement and accuracy |
| Automatic test sequence |
| Bi-polar pre-location 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 |
| Easy Go operating system |
| Benefits |
|
| Standard Mode | 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
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| Accuracy Mode | 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.
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| Cable Fault Location | The HVB10 accurately prelocates cable interruptions and short-circuit faults, and detects high-resistance conductor faults that cannot be prelocated with impulse reflection based methods.
The HV bridge is equipped with a strong discharge unit which allows the safe discharge of cables with a capacity of up to 25 μF.
Prior to each test, a capacity measurement ensures that the expected discharge energy does not exceed these parameters and damage the HVB10.
This makes is very suitable for very long cables and their parameters.
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| Sheath Fault Prelocation | The prelocation of sheath faults takes place automatically.
The only parameters that need to be entered are the peak test voltage and the cable length.
If the cable length is not available, the fault distance is displayed as a percentage of the length.
The HVB10 evaluates all measurements automatically, providing the user with a report of the test results and a statement about the sheath condition.
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| Sheath Fault Pinpointing | The HVB10 provides two possibilities for sheath fault pinpointing:
- By means of the standard pulsed DC and the step voltage method (in combination with an earth fault probe such as our ESG NT)
- By means of 3 or 4.8 Hz signal and A-frame
Optionally, the HVB10 can be equipped with an audio frequency module.
In addition to the step voltage, this module generates an audio frequency signal of 8.44 kHz for simultaneous tracing and fault pinpointing.
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| Specifications |
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HVB10
High-Voltage Bridge
|
|
| Feature | Parameter |
| 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
Option AF: 8.44 kHz, Uo = 100 Vrms, P = 7 Wpeak (500 Ω)
|
| 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 |
| Specifications |
|
| HVB10 High-Voltage Bridge |
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| Model Overview |
|
| Model | Description |
HVB10-1
(101 2574)
| HV Measuring Bridge System |
HVB 10-1-AF
(101 2575)
| HV Measuring Bridge System with option Audio Frequency |
