Cable Fault Tester
Darui Electric recommends:
1. Product Name: Cable Fault Tester
2. Model: GHDL-2010
II. Relevant National Standards for Manufacturing Bid Products
GB 311—83 Insulation coordination for high-voltage transmission and transformation equipment High-voltage test techniques
GB/T16927.1 High-voltage test techniques Part 1: General test requirements EQV IEC 600600
GB/T16927.2 High-voltage test techniques Part 2: Measuring systems EQV IEC 60060
GB 191 Packaging, storage and transportation pictorial marking EQV ISO 780:1997
DL/T849.1-2004 <<General technical conditions for special testing instruments for power equipment>>
GB/T6587.7-1986 Electronic measuring instruments Basic safety tests
GB/T6587.8-1986 Electronic measuring instruments Power frequency and voltage tests
GB/T6593-1996 Quality inspection rules for electronic measuring instruments
GB/T11463-1989 Reliability tests for electronic measuring instruments
III.Product Features of Cable Fault Tester:
1. Adopts industrial embedded computer platform system, industrial-grade environment, achieving extremely high stability. Lithium battery power supply, convenient for on-site testing.
2. The first in China to adopt a 12.1-inch large-screen touch system with fully computerized operation platform integrated software, completely bidding farewell to the single-chip era of cable instruments, and equipped with cable fault testing software and cable data management software.
3. Uses the latest USB communication interface, stable signal acquisition, with a laptop computer can achieve dual control and dual display. The host can automatically select five sampling frequencies from a minimum of 6.25MHz to a maximum of 100MHz, meeting the testing requirements of different cable lengths and reducing coarse measurement errors.
4. Software enables automatic fault search, automatic distance display, dual cursor movement accurate to 0.1 meters, waveforms can be arbitrarily compressed and expanded, 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. Supports the latest 3G communication terminals or wireless data cards. Dedicated 3G software enables expert remote real-time on-site testing technical services. Experts can remotely control the user's host, providing timely and accurate waveform analysis and communication guidance for on-site testing, ensuring worry-free work.
6. 4G electronic disk memory stores multiple types of on-site waveforms and on-site physical wiring diagrams. A single click can use them. The cable data management software can perform comprehensive cable file management, providing reference and assistance for cable maintenance and precise location.
7. The key precise locator part directly displays the distance from the tester to the fault point digitally, which is another innovation in domestic similar pinpointing technology, providing strong support for quickly and accurately finding cable faults and reducing power outage losses.
9. The newly developed intelligent combined sampler replaces cumbersome on-site wiring, featuring intuitive waveforms, easy analysis, complete isolation from high voltage, and absolute safety for the host and operators.
10. The high-voltage discharge part offers three options for users. The first in China to use the latest high-frequency high-voltage power supply of 8.9kg to replace the 65kg test transformer and operation box, filling a domestic gap.
III. Test Indicators:
1. Can test various types of faults in power cables of different voltage levels, cross-sections, media, and materials, including: open circuit, short circuit, low resistance, high resistance leakage, and high resistance flashover faults.
2. Can measure the propagation speed of electromagnetic waves in any cable of known length.
3. Can test cable route and burial depth.
4. Display method: 12.1-inch industrial-grade LCD screen
5. Storage method: fixed and mobile two modes 4G/2G
6. Test methods: low-voltage pulse method, impulse current method, direct flash current method
7. Operation method: touch screen, pen operation. Test distance: not less than 40km
8. Minimum test distance (blind zone): 10 meters
9. Precise pinpointing error: ±0.15m
10. Test error: system error less than ±1%
11. Resolution: V/50m; V is the wave propagation speed m/μs;
12. Software cursor 0.1 meters.
13. Ambient temperature: -20°C ~ 50°C
14. Relative air humidity: ≤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
IV. System composition: composed of cable fault testing system, testing system, pinpointing instrument, path instrument, and high-voltage components.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
