How Does a Cable Fault Pre-Locator Work?
Understand how a cable fault pre locator works, its testing principles, and how RDCD-Ⅱ/502 improves high resistance cable fault detection and repair efficiency.
Cable faults can stop power supply and cause big trouble for daily work and production. A cable fault pre-locator is a key tool to find these faults quickly. Among all cable fault pre-locators, the RDCD-Ⅱ/502 from Wrindu stands out for its stability and ease of use. This article explains how a cable fault pre-locator works, and shows why the RDCD-Ⅱ/502 is a top choice for many users.
Click the picture to know more about Wrindu RDCD-II Cable Fault Pre-locator.
What Is a Cable Fault Pre-Locator?
A cable fault pre-locator is a special instrument. It measures and analyzes the status of power cables and finds the distance of cable faults. It uses modern electronic and computer technology to make fault finding fast and accurate. The Wrindu RDCD-Ⅱ/502 Cable Fault Pre-locator (multiple pulse) is a high-quality option. It comes from Shanghai, China, and can meet different testing needs for various cables.
How Does a Cable Fault Pre-Locator Work Step by Step?
The working process of a cable fault pre-locator is simple and clear. It has three main steps, and the RDCD-Ⅱ/502 follows this process with advanced functions to ensure accuracy.
Step 1: Send Test Pulses to the Cable
First, the cable fault pre-locator sends test pulses to the faulty cable. The RDCD-Ⅱ/502 uses three methods: low voltage pulse method, high voltage flashover method and multiple pulse method. It has eight pulse transmissions, which can send stable pulses with 400Vpp amplitude and 0.1uS or 2uS width. These pulses travel along the cable and reflect back when they meet a fault.
Step 2. Collect and Process Reflection Signals
When the pulses hit a fault (like short circuit, open circuit or leakage), they reflect back to the instrument. The cable fault pre-locator collects these reflection signals. The RDCD-Ⅱ/502 has a high sampling rate (60MHz, 120MHz, 240MHz) for automatic continuous sampling. It never misses any discharge waveform. Its industrial-grade integrated circuits and components ensure stable signal collection and processing.
Step 3. Calculate and Display Fault Distance
The instrument uses the time between sending the pulse and receiving the reflection to calculate the fault distance. It also combines cable speed measurement data for more accuracy. The RDCD-Ⅱ/502 has an industrial-grade 12.1-inch touch-screen computer. It displays the fault waveform and the full-length open circuit waveform of the good phase at the same time. This allows for side-by-side comparison, making fault distance judgment easier. It shows the fault distance directly, with no test blind area. The instrument’s reading resolution is 0.1m, and the system test accuracy is less than 0.5m, which is very reliable.
What Are Common Questions About Wrindu Cable Fault Pre-Locators?
We collect common questions from users who use cable fault pre-locators. Here are clear answers, focusing on the RDCD-Ⅱ/502.
Q: What types of cable faults can a pre-locator find?
A: It can find low resistance, short circuit, open circuit and breakage faults. It also works for high-resistance leakage and high-resistance flashover faults. The RDCD-Ⅱ/502 is suitable for various cables, including power cables, high-frequency coaxial cables, streetlamp cables and buried wires of different cross-sections and media.
Q: Is the RDCD-Ⅱ/502 easy to operate?
A: Yes, it is very easy. It uses a 12-inch industrial computer control and touch operation mode. It has a Windows operating system and a super cable management system. The software interface is simple, realizing human-machine interactive testing. It even automatically generates test reports, saving users time.
Q: How long can the RDCD-Ⅱ/502 work continuously?
A: It has a built-in li-polymer power supply. It can work continuously for more than 4 hours after being fully charged, which completely meets field test needs. It can also work with an external AC power supply for longer use.
Q: Can I store test waveforms with the RDCD-Ⅱ/502?
A: Yes. It has a mass test waveform storage function. You can conveniently store on-site test waveforms in the instrument in a specified order. You can call and observe them at any time, which is helpful for later analysis and records.
Q: What is the maximum measuring distance of the RDCD-Ⅱ/502?
A: Its maximum testing distance is 60km. It can handle short-distance (＜1km), medium-distance (＜3km) and long-distance (>3km) cable tests, with a low voltage pulse amplitude of 400Vpp.
Q: How long does it take to deliver the RDCD-Ⅱ/502?
A: The delivery time is about 25 days. Wrindu has a large supply capacity, up to 5000 sets per month, so it can meet large-order needs.
Why Choose Wrindu RDCD-Ⅱ/502 Cable Fault Pre-Locator?
The RDCD-Ⅱ/502 is a professional cable fault pre-locator with many advantages. It has stable performance, easy operation and high accuracy. It uses industrial-grade components and a large-capacity lithium-ion battery, making it suitable for field work. Whether you need to test short or long cables, the RDCD-Ⅱ/502 can meet your needs.
For more cable fault test equipment, please click on the cable fault test solution list. If your company has purchasing needs, please click to contact us. We are always ready to provide you with quotes and solutions.
