0-25KV 0-33KV 0-132KV Cable fault location system
I.Function
Detect main insulation faults of power cables of voltage class up
to32kV ; calibrate cable length; accurately detect cable burial
direction and depth.
II. Configuration
Cable fault location system
| Name | QTY |
| TDR | 1 |
| 110kV Accessory | Pin pointer | 1 |
| Cable route tracer | 1 |
| Power frequency withstand voltage test set | High voltage trial transformer | 1 |
| Operation Box | |
| Pulse Storage Capacitor | 1 |
0-25KV 0-33KV 0-132KV Cable fault location system
III.Main Technical data
1) Windows operating system, touch operation mode, wireless expert
online guidance, scientific cable management, real-time report
generation; built-in operation instructions, cable data, measured
cases.
2) System function: fault distance measurement, fault point
location, propagation speed test,fault impedance value, cable path
search, buried depth detection, etc.
3) Test methods: low-voltage pulse, flashover method, audio method,
acoustic-magnetic synchronization method, valley method, peak
method, electromagnetic induction method, etc.;
| Display control |
| Flash tester | 5.7-inch industrial-grade one-machine control,built-in 12V/7Ah DC
power supply, can work continuously for 8 hours; other is
controlled by single-chip microcomputer, pointer table display;
|
| Test range |
| test distance | 60km |
| detection depth | 2-5m |
| Measurement accuracy |
| rough measurement error | ±10m (absolute value) or 1% |
| accurate test error | ±0.2m(point,path and depth) |
| Sampling frequency | 100MHz, minimum resolution 0.5m (100m/us) |
| Sampling method | Fully automatic continuous sampling, never miss any single
discharge waveform
|
| Low voltage pulse |
| Width | 0.1uS and 2uS |
| Amplitude | 100Vpp
|
| output power |
| path power | 100W |
| impact power | 0 ~ 25kW |
| Impact high voltage | 0～140KV |
| Short circuit current | 0 ~ 100mA |
| Burn through power | 0 ~ 5000J |
0-25KV 0-33KV 0-132KV Cable fault location system
IV Introduction of every part
- TDR
Introduction
Windows operating system, touch operation mode, wireless expert
online guidance, scientific cable management, real-time report
generation; 10 pulse 10 flashover wave superposition analysis;
built-in operation instructions, cable data, measured cases, etc.;
With ranging, speed measurement, cable management and other
Functions
100MHz sampling frequency, minimum resolution 0.5m (100m/us)
Fully automatic continuous sampling, never miss any discharge
waveform;
| Test method | flashover method, low pressure pulse method |
| Main Specifications |
| Pulse amplitude | 100Vpp
|
| Pulse width | 0.1uS and 2uS
|
| Measuring distance | Smax: 30km Smin: 15m |
| Measurement error |
| rough measurement absolute error | ±10m |
| coarse measurement relative error | ±1% |
| Power supply mode | built-in 24V/7Ah DC power supply, can work continuously for 6 hours
or external AC 220V 50Hz power supply
|
0-25KV 0-33KV 0-132KV Cable fault location system
- Pinpointer
Usage: Work with High voltage generator to determine the exact location
of the fault point, that is, to complete the precise positioning
task within the rough measurement range of the cable fault point.
Consist of :
Host machine,acoustic and electromagnetic synchronous sensor,
anti-noise headphone and charger
Function and index
Acoustic waves and electromagnetic waves generated when the fault
point is discharged can be synchronously received to determine the
position of the cable fault point.
| magnification times | 500,000times |
power supply
| Battery: in-built lithium battery, nominal voltage:9V±20% |
| static current | ＜10mA |
| Receiving signal | tremble and magnetic signal when fault point discharge |
| Output impedance | 350Ω |
| Location accuracy | 0.2m |
0-25KV 0-33KV 0-132KV Cable fault location system
3.Cable route tracer
Usage: Cable path meter is a special instrument for accurately detecting
the position and depth of buried cable in a certain range; path
detection is completed by the path signal generator and path signal
receiver (cable fault fixed point meter); The cooperation between
the two uses the operation to accurately locate the cable path
within the approximate cable embedding range.
Main composition
Path detection is mainly composed of path signal generator and
receiver
Index parameter
| Working mode | continue square wave signal |
| Output signal | audio frequency |
| Receiving signal | audio frequency |
| Work supply | 220V (1±10%),50Hz(1±5%) |
| Output power | 100W |
4.Power frequency withstand voltage test equipment
1).Oil type trail transformer
Technical index:
| Rated output capacity | 10kVA |
| Output AC Voltage | 100kV DC140kV |
| Output current | 100mA |
2).Operation Box
Work with trial transformer,also could used for output 0-450V power
frequency AC power.
| Input voltage | AC380V 50Hz |
| Output voltage | 0-450V, 50Hz |
| accuracy class | 2.5 |
With overflow protection function , protect current for continuous
adjustment.
With HV output indication, low voltage side or high voltage side
leakage current indication function
0-25KV 0-33KV 0-132KV Cable fault location system
5.Pulse storage capacitor
Mainly used for coarse test HV resistance fault, accurately locate
for all cable.
Technical index:
| Capacitance voltage | 1μF±5%/100kV |
| Loss value | ≤0.006(1kHz) |
| Insulation resistance: | RC ＞7500MΩ.uF |
| Insulation resistance: | 1.1-1.5Un.2s |
| Polar to Housing | 2Un·2s |
| Ambient temperature | -25 to 40℃ |
| Latitude | 2000m |
