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| Place of Origin: | Xi'an, Shaanxi, China |
| Brand Name: | XZH TEST |
| Certification: | CE |
| Model Number: | XHSC-60Q |
Cable fault location intelligent bridge, XHSC-60Q, set burn through and intelligent bridge in one. Rated voltage in burn mode is 60kV, short circuit current is 600mA, which can quickly burn high resistance fault to low resistance. The rated working current of intelligent bridge is 600mA, which greatly improves the accuracy of fault location.
It is especially suitable for the insulation fault location of high voltage, large section and long complex cable system, such as the insulation fault location of complex high voltage cable with GIS terminal and cross interconnection. The location can be completed quickly without removing the GIS switch and short circuit cross interconnection.
The intelligent cable fault location bridge can be used to locate all cable insulation and sheath faults except some short line faults.
Technical features
1.The equipment adopts switching power supply to form high voltage constant current source, high voltage and stable current.
2.The bridge detection module is integrated with a large LCD screen display at high potential. The operating button on the panel is at ground potential and the bridge is operated through the insulation rod.
3.The special custom-made four-core high-voltage measuring cable with shield, the copper mesh braided shield layer is reliably grounded and safe to use. The four - end resistance measurement method avoids the error of lead resistance.
4.The high voltage constant current source and bridge are integrated in a portable pull rod plastic box. High voltage, light weight, easy to operate.
5.The bridge method has no blind spot compared with the wave reflection method, and is especially suitable for determining the breakdown points of short cables and near the ends.
6.High voltage and high current are especially suitable for the fault locating of insulation and sheath of complex high-voltage cable systems with large length and large section.
Panel description
1.Voltmeter:Output voltage in kV.
2.Ammeter: Output current in mA.
3.Bridge indication:Turntable switch The light is on when in the bridge mode.
4.Fuse holder:Built-in 10A (5×20) fuse.
5.Power socket:Power frequency 220V±10%
6.Grounding post:The equipment and the test site must be reliably grounded to prevent the shell from being electrified, endangering personal safety and damaging the equipment.
7.Output selection dial: Select bridge output or burn-through output. Method: Rotate the turntable clockwise to expose the burn-through output socket and select the burn-through mode; rotate the turntable counterclockwise to expose the bridge output socket and select the bridge mode; only two gears can be rotated.
8.Burn through instructions:Turntable switch The light is on when in burn-through mode.
9.High voltage enable: Press this button to power off and the high voltage output will be disconnected. Rotate the button clockwise to pop up, and the device can resume normal operation.
10.High voltage adjustment: Rotate clockwise to increase pressure, and vice versa to decrease pressure. It is interlocked with the high-voltage switch. Only when the knob returns to zero counterclockwise, the high-voltage can be switched on, and the bridge indicator or burn-through indicator is on before the voltage can be boosted.
11.High pressure: Press this button, the button's indicator light is on, then high voltage can be output. If the switch cannot be closed, it may be that the high-pressure adjustment knob is not in the zero position or the high-pressure enable button has not popped up.
12.Power switch: Turn the switch clockwise, the power indicator light is on, and the instrument is powered on.
13.Set/Confirm: Bridge positioning operation button. In the LCD screen operation interface, turn the button clockwise or counterclockwise, the cursor will move accordingly, select the menu or input parameters, press the button to confirm the selection or modify the result.
14.LCD screen: Man-machine operation interface display screen.
Technical Parameters
| Burn through mode | The output voltage | 0～60kV Continuous adjustable |
| Short circuit current | 600mA | |
| A bridge model | The output voltage | 0～4kV Continuous adjustable |
| Short circuit current | 600mA | |
| LCD The display screen | 3.5 inch TFT Color screen | |
| Positioning accuracy | ±(0.2%·L+1)m | |
| Test range | 1～50000m | |
| Operating keyboard | One key operation | |
| The power supply | 220V AC±10%,50Hz | |
| power | 2kVA,Generator power supply (greater than 2kW) | |
| weight | 29kg | |
| Dimensions (length × width × height) | 30cm´46cm´50cm | |
| Operating temperature | -10℃～+55℃ | |
Function
1.DC withstand voltage test
This equipment can do withstand voltage test. Unlike general withstand voltage equipment, there is no over-current alarm function. The insulation status should be judged based on the reading of the voltage and ammeter.
The wiring and operation steps of the DC withstand voltage test are the same as the burn-through test, which will not be introduced here.
2. Burn through test
3. Fault pre-positioning
The maximum output voltage of the bridge mode is 4kV.
When using the bridge method, cross section method or intelligent voltage method for positioning, if the current is less than 20mA or the current is unstable, the positioning should be terminated. Use the equipment burn-through mode to burn high-resistance faults into low-resistance faults, and the current is stable, and then pre-position.
The figure above shows the bridge method for pre-locating the cable fault distance. In addition to the bridge method, the cross-sectional area method can also be used to detect cable fault distance.
The above two pictures show the burn-through work interface and results
Principles for selecting bridge method, cross-section method and intelligent voltage method
If the cable length is known, use the bridge method or voltage comparison method; if the cross-sectional area and material are known, use the section method.
The electric bridge method must have the following conditions at the same time:
(1)The cross-sectional area of the faulty cable and the auxiliary cable are the same, and the cable length is the same;
(2)The far end of the cable must be short-circuited with a low-resistance short-circuit wire;
(3)There is no broken core in the faulty cable.
The section method must have the following conditions at the same time:
(1)The faulty cable and the auxiliary cable have the same cross-sectional area and the same material;
(2)The far end of the cable can be short-circuited with a low-resistance short-circuit wire or other low-resistance connecting wires;
(3)There is no broken core in the faulty cable.
The voltage comparison method must meet the following conditions:
(1)Known cable length;
(2)The conductor section of the faulty cable is the same and the material is the same;
(3)Test the voltage values of the two wiring methods, calculate the percentage of fault points, and calculate the distance to the fault point from the known length.
Packing List
| 1 | Cable fault locating Intelligent bridge | 1 set |
| 2 | Bridge test box | 1pcs |
| 3 | Spare fuse(10A,5×20) | 5pcs |
| 4 | Accessories bag | 1pcs |
| 5 | Accessories | |
| 5.1 | Bridge positioning test line | 1pcs |
| 5.2 | Burn through source output line | 1pcs |
| 5.3 | bridge positing low resistance short circuit wire | 1pcs |
| 5.4 | Short wire for bridge positioning | 1pcs |
| 5.5 | Special ground wire | 1pcs |
| 5.6 | Discharge rod ground wire | 1pcs |
| 5.7 | Power cord | 1pcs |
| 5.8 | Discharge rod | 1pcs |
| Optional accessories | ||
| 10m low resistance short circuit wires(Can be used for 110kV ~ 220kV cable) | 1pcs | |
| Cable fault connection kit | 1set |
Company profile
XZH TEST is a professional cable fault detection equipment manufacturer. We are a young team. Our development philosophy is humanized management, intelligent cloud-based products, and internationalized operations. Our development mission is to make electrical equipment free from undetectable failures.
Since its inception in 2013, our company has grown to become one of the largest manufacturer of underground cable fault detection equipment in China. An ISO 9001 and CE certified company, we produces a broad range of testing equipment.
What we can do
We have the ability to innovate new products and technologies.
We can provide complete system solutions for your project.
We provide online and offline practical and theoretical training.
We provide instrument repair and calibration.
FAQ
1. Are you a trading company or a manufacturer?
We are a professional manufacturer with more than 10 years of experience. We can strictly control the quality of parts and finished products.
2. What is the delivery time and inventory?
If our best-selling products are in stock, it will be 5-8 working days for shipment. But for mass production and customized production, the time will take 2-4 weeks.
3. What are your payment terms?
Payment ≤ USD 2000, 100% T/T prepayment. Orders over USD 2000 can be negotiated.
4. How long is your product warranty?
We provide 1 year warranty for the equipment.
5. How do you ensure quality?
The product links include R&D, manufacturing, commissioning and technical support, following strict and scientific management principles. Therefore, we can support strong production and R&D capabilities, and can produce high-quality products at competitive prices to meet customers' high requirements.
6. What support can I get?
We will provide training support, marketing support, technical support and supply chain support. You can contact us for more information.
7. Where is your factory? Can I visit your factory?
We are located in Xi'an, Shaanxi, China. We are close to Xi'an Xianyang International Airport, which is about 2 and half hours by plane from Shanghai and Guangzhou. All customers from all over the world are welcome to visit us.
8. How to become your dealer?
Every company interested in power system instruments can contact us without hesitation, including website letters, emails, telephones, etc. We will contact you quickly according to your company information and cooperation intentions.
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