Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 3000unit/year |
| Delivery Time | 5-8 work days |
| Packaging Details | wooden packaging |
| Brand Name | XZH TEST |
| Model Number | XHHG521CL |
| Certification | CE/ISO |
| Place of Origin | Xi'an, Shaanxi, China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 3000unit/year |
| Delivery Time | 5-8 work days | Packaging Details | wooden packaging |
| Brand Name | XZH TEST | Model Number | XHHG521CL |
| Certification | CE/ISO | Place of Origin | Xi'an, Shaanxi, China |
| High Light | Open-circuit voltage 15kV Cable Fault Locator ，Precise Detection Power Cable Fault Detector ，Outer sleeve failure Cable Fault Tester | ||
The Cable Outer Sheath Fault Tester is designed on the MURRAY bridge principle and can be used to pinpoint the breakdown points of various wires and cables, as well as defect points that have not yet broken down but have a low insulation-resistance value.
The equipment uses a motorized voltage regulator and an R-type transformer to form a high-voltage constant-current source, with keys to raise and lower the voltage. Its no-load voltage is 15kV, with a high short-circuit current. A high-sensitivity amplifier and a galvanometer provide the balance indication, which together with a proportional potentiometer forms a balanced bridge placed at high potential. The measuring cable is a specially designed two-core high-voltage rubber cable, and the four-terminal resistance measurement method avoids the error introduced by lead resistance. The panel as a whole is at low potential. With one-key operation, the fault distance is calculated automatically once the cable length is entered. The high-voltage source and the bridge are integrated in one portable protective case, so the equipment offers high voltage, light weight, convenient operation and safe use.
Product Features Bridge PartThis tester works on the outer sheath (protective layer) of high-voltage and extra-high-voltage cables. Its focus is the sheath withstand test and the location of high-resistance and flashover-type sheath breakdowns on 10kV–500kV single-core and three-core cables, and it is especially suited to:
1. Extra-high-voltage cable engineering and transmission-and-transformation engineering companiesFor the outer-sheath handover test after laying 110kV and above XLPE cables and for cross-bonded systems, meeting the GB50150-2006 sheath withstand-test requirements (including the 5kV–15kV, 1-minute DC withstand test on HDPE and PVC sheaths).
2. Operation units of 10kV–500kV single-core and three-core cablesFor quickly and accurately finding outer-sheath ground faults and excessive leakage current, and for troubleshooting operating defects such as termite bites, water ingress in grounding boxes, deterioration of existing defect points and moisture penetration in the branched part of the grounding wire.
3. Teams locating high-resistance and flashover-type breakdownsFor linear high-resistance breakdown points that are hard to burn into low resistance (for example at cable intermediate joints), for flashover-type breakdown points where the constant-current source maintains the arc, and for defect points that have not broken down but show low resistance on a megohmmeter — using the bridge-balance method, which has no blind zone.
Especially Suitable For| Item | Specification |
|---|---|
| No-load voltage | ≥15kV |
| Short-circuit current | ≥150mA (when balancing, 5–40mA is recommended) |
| Positioning ratio accuracy | ±(0.2%·L±1) m |
| Working power | Supply: AC 220V (±10%), 50Hz±1Hz; balancing power: 8.4V built-in battery |
| Item | Specification |
|---|---|
| Input voltage | 220V (±10%), 50Hz (±2Hz) |
| Output voltage | 0–15kVDC, adjustable |
| Output current | 0–150mA |
| Output capacity | 2kVA |
It is designed on the MURRAY bridge principle to pinpoint the breakdown points of wires and cables and defect points that have not yet broken down but have a low insulation resistance. For high-voltage and extra-high-voltage cables it finds outer-sheath ground faults and excessive leakage current on 10kV–500kV single-core and three-core cables, and carries out 5kV–15kV, 1-minute DC withstand tests on HDPE and PVC outer sheaths.
Compared with the wave-reflection method, the bridge-balance method has no blind zone, so it is suitable for judging short cables and breakdown points near the terminals, as well as high-resistance breakdown points that are hard to burn into low resistance and flashover-type breakdown points.
Bridge part: no-load voltage ≥15kV; short-circuit current ≥150mA (5–40mA recommended when balancing); positioning ratio accuracy ±(0.2%·L±1) m; weight 35kg; supply AC 220V (±10%), 50Hz±1Hz and an 8.4V built-in balancing battery. Withstand-test part: input 220V (±10%), 50Hz (±2Hz); output 0–15kVDC adjustable; output current 0–150mA; output capacity 2kVA.
It offers zero-position protection on the bridge, and automatic over-current, over-voltage and over-heat protection with zero-position start protection on the withstand-test part, a unique self-discharge design (the high voltage drops to zero as soon as the output is cut off), dual current/voltage pointer meters and an over-current protection switch.
Yes. The output is 15kV and below, which fully meets the cable outer-sheath withstand-test requirements of the Chinese national standard GB50150-2006, including the sheath handover test and preventive test for cross-bonded systems.
Company Details
Business Type:
Manufacturer
Year Established:
2013
Total Annual:
1000000-5000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Xi'an Xu&Hui Electromechanical Technology Co., Ltd. /Xian XZH Electric Power Technology Co., Ltd. Has found in 2013, located in Xi'an, China. which is a highly experienced team dedicated to developing electrical... Xi'an Xu&Hui Electromechanical Technology Co., Ltd. /Xian XZH Electric Power Technology Co., Ltd. Has found in 2013, located in Xi'an, China. which is a highly experienced team dedicated to developing electrical...
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