Manufacturer of cable fault tester

1、 Product Overview:

SDDL-2013A Yangzhou Sudian Cable Fault Tester is a solution for the power industry and a rapid development in the IT era. Yangzhou Sudian has systematized the limitations of the original cable fault tester using an industrial control embedded computer platform system, network service business, USB communication technology, and convenient on-site environment operation of the instrument. The testing software automatically identifies card positions and reads fault distances, providing a set of multi solution service methods and management learning software, especially for the increasing number of buried cable faults.

2、 Product Features:

1. Adopting an industrial control embedded computer platform system and an industrial grade usage environment to achieve * stability. Lithium battery power supply, convenient for on-site testing.

2. Adopting a 12.1-inch large screen touch system and fully integrated software for computer operation platform, bidding farewell to the era of cable instrument microcontrollers, and equipped with cable fault testing software and cable data management software.

3. Adopting a new USB communication interface, stable signal acquisition is achieved. Paired with a laptop, dual control and dual display can be achieved. The host can automatically select the lowest 25MHz and sampling frequency, which can meet the testing requirements of cables of different lengths and reduce rough measurement errors.

4. The software implements automatic fault search, distance display, and dual cursor movement with an accuracy of 0.1 meters. The waveform can be compressed and expanded arbitrarily, and two waveforms closer to the standard are randomly displayed on the same screen for accurate comparison and analysis, improving testing accuracy and reducing errors.

5. Provide timely and accurate waveform analysis and communication guidance for on-site testing to ensure worry free work for users.

6. The 4G electronic disk memory has multiple types of on-site waveforms and physical wiring diagrams, which can be easily used with just a click. The cable data management software can provide comprehensive cable file management, providing reference and assistance for cable maintenance work and precise positioning.

7. The key precise fixed-point instrument part, which directly displays the distance between the tester and the fault point digitally, is another innovation of similar fixed-point technology in China, providing strong support for quickly and accurately finding cable faults and reducing power outage losses.

8. The newly developed intelligent combination sampler replaces tedious on-site wiring, with intuitive waveform, easy analysis, isolation from high voltage, and safety features for the host and operators.

9. Three types of high-voltage discharge parts are available for users to choose from, with a new high-frequency high-voltage power supply of 8.9kg replacing the 65kg test transformer and operation box

Test indicators:

1. It can test various faults of power cables with different voltage levels, cross-sections, media, and materials, including open circuit, short circuit, low resistance, high resistance leakage, high resistance flashover fault, armored cable short circuit, overhead bridge, etc.

2. The speed of radio wave propagation in any cable with a known length can be measured.

3. Can test cable routing and burial depth.

4. Display mode: 12.1-inch industrial grade LCD screen

5. Storage method: Fixed and mobile dual mode 4G/2G

6. Testing methods: Low voltage pulse method, impulse lightning current method, direct lightning current method

7. Operation mode: touch screen, pen operation Test distance: not less than 40km

8. Zui Short Test Distance (Blind Spot): 10 meters

9. Accurate positioning error: ± 0.15m

10. Test error: System error less than ± 1%

11. Resolution: V/50m; V is the wave propagation velocity m/μ s;

12. Software cursor is 0.1 meters.

13. Environmental temperature: -20 ° C~50 ° C

14. Relative humidity of air: ≤ 85% RH

15. Atmospheric pressure: 86~106KPa

16. Altitude: below 2500 meters

17. Maximum wind speed: ≤ 40m/s

18. Basic seismic intensity: 8 degrees, peak ground acceleration 0.214g

19. Pollution level: Level IV

Product system composition

It consists of cable fault testing system, testing system, fixed-point instrument, path instrument, acoustic magnetic synchronous receiver, and high-voltage components.

1、 Acoustic magnetic digital synchronous fixed-point instrument (unit)
1. Product Usage:
Used for precise positioning of fault points in buried cables.
2. Main features
2. 1. The instrument uses special structured acoustic vibration sensors and low-noise components as preamplifiers, which improve the sensitivity and accuracy of the instrument's fixed-point and path detection.
2. 2. Adopting advanced static noise fixed-point technology effectively overcomes most of the noise interference in the on-site environment. Only when working under high pressure shock, the sound channel of the fixed-point instrument is opened to listen for the vibration waves of the underground fault point. The rest of the time * is in a quiet state.
2. 3. In signal processing technology, the distance between the fault point and the sensing probe is displayed digitally, greatly eliminating the need for calibration
Blindness in timing. And it can accurately display the distance and direction of the fault, effortlessly and quickly determining the fault location.
2. 4. By applying the power frequency adaptive cancellation theory and high-Q power frequency notch technology, the suppression and anti-interference ability of 50Hz power frequency signals in strong power frequency electric field environments have been strengthened, and the fixed-point blind spot has been reduced.
2. 5. In terms of instrument functionality, the use of acoustic electric synchronous reception and display technology effectively overcomes the difficulty of fixed-point positioning caused by environmental noise interference in the fixed-point site. Especially the digital display of fault distance eliminates the need for operators to analyze and judge complex waveforms, and to a considerable extent replaces the rough distance measurement function of the flash tester. For hundreds of meters long faulty cables, it is generally not necessary to conduct rough measurements to implement fixed points, which truly achieves high efficiency, speed, and accuracy.
2. 6. The use of 15KHz amplitude modulated electromagnetic waves and amplitude detection technology for path detection and cable burial depth measurement avoids the interference of TV line frequency on the fixed-point instrument when the original equal amplitude 15KHz signal source is used.
The instrument is extremely easy to operate, just turn on the power switch, there is no need to shift gears or select functions.
Another significant feature of the instrument is its compact structure, small size, modularity, ease of carrying and maintenance, powerful functionality, and high precision.
3. Fixed point principle:
The precise positioning of the fault point is achieved using the principle of acoustic magnetic synchronous fixed-point. The specific implementation method is as follows:
Apply pulse high voltage to one end of the buried power cable to generate a discharge arc at the fault point of the buried power cable. The discharge arc generates electromagnetic waves and vibration sound waves - acoustic and magnetic signals. The digital synchronous fixed-point instrument synchronously receives the acoustic and magnetic signals radiated by the discharge arc. Based on the time difference between the electromagnetic waves and sound waves received by the digital synchronous fixed-point instrument, it is converted and displayed digitally as the straight-line distance from the receiver fixed-point probe to the fault point. At the same time, along the path of cable burial, the size of the discharge vibration sound at the fault point is determined from the headphones based on the sound waves received by the probe. Directly above the fault point, the digital display screen shows a small reading and a loud vibration wave, which can accurately determine the precise location of the fault point.

4. Technical specifications of digital synchronous fixed-point instrument:
★ Digital display distance: up to 100 meters, down to 0.1 meters.
★ Fixed point error:<0.1 meters.
★ Sensitivity of electromagnetic channel receiver:<5 μ V.
★ Sound channel audio amplifier gain:>70dB.
★ 50Hz power frequency suppression system:>40dB.
★ Power supply: 7.4V/2600mAh polymer lithium battery.
★ Power consumption:<100mA (0.7W) can work continuously for more than 24 hours after being fully charged.
Working environment: temperature -20 ℃ -+50 ℃, humidity 80%.
5. Attention:
Firstly, roughly measure the distance of cable faults, then accurately determine the cable burial path, and then use this instrument to implement fixed-point measurement. Do not implement fixed-point in situations where the path is unclear.
The digital synchronous fixed-point instrument needs to be charged before use and must use an 8.4V charging adapter. The charging time should not be less than 8 hours (the charging socket is located on the back panel of the instrument). If the indicator light on the charging adapter changes from red to green during the charging process, it means that the internal battery is fully charged.
In the process of searching for cable paths, when the output of the path signal is large, the cables laid in parallel near the tested cable will also sense the path signal and generate secondary radiation, which will cause the small sound point characteristics of the headphones to be unclear, and even walk along the path of nearby cables, resulting in incorrect judgment.
If this situation occurs, the cable path can be traced from the end of the tested cable to the starting direction. This can avoid the trouble of path detection misjudgment.
2、 Cable Path Tester (Unit)
1. Purpose:
This path signal source, when combined with a path detection receiver, can reliably detect the burial path and depth of various buried cables.
2. Characteristics:
Due to the use of intermittent amplitude modulation for a 15KHz sine signal. When detecting the path direction and burial depth of buried cables, it can effectively suppress power frequency interference and co frequency interference of TV horizontal frequency (15625Hz). Improved on-site detection efficiency. Due to the use of amplitude modulation technology, this signal source is not only suitable for traditional beat type receivers but also for direct amplification type double voltage detection path receivers. The high-power output signal of this signal source can enable the detected path distance to reach more than 10Km, for various types of cables laid over long lengths in various fields and enterprises.
3. Technical indicators:
1. Output power: When the load resistance is 10 ohms, the output power is greater than 30 watts and continuously adjustable.
2. Operating frequency: 15KHz
3. Working mode: intermittent (repetition cycle 1Hz/s), equal amplitude, amplitude modulation (modulation frequency 400-1000Hz). Equal amplitude output is suitable for differential receivers, and amplitude modulation output is suitable for direct amplification double voltage detection receivers.
4. It has automatic overheating and overload protection functions, and can work continuously for more than eight hours.
5. Power supply: AC 220V
6. Environmental conditions: temperature -25 ℃ to+50 ℃ Celsius, humidity less than 95%

3、 Lightweight high-voltage generator (unit)
1. Performance characteristics of lightweight high-voltage generator:
The lightweight high-voltage generator meets the "General Technical Conditions for High Voltage Test Devices" of the People's Republic of China Power Industry Standards. Mainly used for conducting impulse discharge tests on 35KV and below cable faults The whole machine adopts high-precision and high stability electronic components and high-frequency and high-voltage technology, making its structure extremely simple, easy to operate, and high safety. Its weight is only 9 kilograms. Replacing dozens of kilograms of test transformers and operation boxes, on-site wiring is extremely simple. Fully demonstrate the application of high technology in high-voltage equipment. It is currently a lightweight and easy-to-use portable impact high-voltage equipment among similar integrated high-voltage generators in China. Equipped with automatic protection against overcurrent and overvoltage. Only one knob can be used to increase or decrease the pressure. Especially suitable for outdoor mobile use, it is an ideal impulse high-voltage equipment for cable fault detection.
Scope of application: Suitable for rough measurement and precise positioning of various high and low voltage power cables, control cables, signal cables, and communication cables, including various high resistance faults, flashover faults, and low resistance grounding faults. It is very effective in locating complex and difficult faults such as moisture intrusion and cable joint sealing.
2. Technical indicators:
1. DC high voltage output: 35 KV
2. Impact high voltage: 0-35kv continuously adjustable
3. External capacitor: 1-8 μ F
4. Impact time: 3-8 seconds
5. High pulse energy: 560-2800J
6. High output current: 50mA
7. Voltage indication error: ± 2%
8. Power supply voltage: 220VAC 50Hz
9. Environmental temperature: -10 to+50 ℃
10. Weight/Volume: 9kg/380 × 260 × 260 mm

3. Main products:

Variable frequency series resonance test device, DC high voltage generator, SF6 micro water meter, SF6 gas recovery device SF6 Gas vacuum inflation device, vacuum pump, dry air generator, vacuum oil filter, power frequency withstand voltage test device (test transformer), ultra-low frequency high voltage generator, cable fault tester, induction withstand voltage test device, transformer DC resistance tester, transformer ratio group tester, three-phase relay protection tester, circuit breaker characteristic tester (high voltage switch mechanical characteristic tester), insulation oil dielectric strength tester (insulation oil withstand voltage tester), high voltage dielectric loss tester (frequency conversion anti-interference dielectric loss tester), fully automatic capacitance inductance tester, loop resistance tester (contact resistance tester), high current generator (current converter), grounding resistance tester, insulation resistance tester (megohmmeter), oxidation tester Zinc lightning arrester tester, transformer characteristic tester Insulated boot glove withstand voltage test device, power safety tool mechanical performance testing machine (electronic force measuring machine), wireless high-voltage phase analyzer, transformer capacity characteristic tester, transformer on load tap changer tester, transformer winding deformation tester, transformer characteristic comprehensive testing bench, lightning counter calibrator, vacuum degree tester, vacuum oil filter, solar photovoltaic junction box tester, various oil analysis instruments, electric heating appliances, insulation products, etc

Our company provides year-round leasing services for testing instruments and construction equipment tools with qualifications ranging from 1-5 levels for installation (repair, testing). Consultation!
Yangzhou Sudian Electric Co., Ltd