Cable Fault Testing

Features and Applications

    EDDQ-3 High-Voltage Cable Outer Sheath Fault Locating InstrumentEquipped with three functions:

Direct Current Insulation Resistance TestEquipment output0-15kV DC voltage, suitable for cable DC withstand voltage testing.

2. Burn-through fault point:Pierce through and reduce the resistance at high resistance and flashover fault points.

3. Fault Pre-Location:Utilizing the bridge principle for preliminary positioning, the four-terminal resistance measurement method avoids errors introduced by lead resistance.

At the same time,EDDQ-3 High-Voltage Cable Outer Sheath Fault Locating InstrumentEspecially suitable for:

1、High dielectric breakdown points post-laying, particularly the linear high dielectric breakdown points that are difficult to achieve low resistance, such as the linear high dielectric breakdown points of cable intermediate joints.

2、Flashover breakdown points can sustain an arc with a constant current source, allowing a stable current to pass through the bridge, which has sufficient sensitivity.

3、Unpenetrated but with a low resistance defect point, such as a cable with a low resistance value detected by a megohmmeter, but an insulation defect point that does not puncture under operating voltage.

Due to the aforementioned features,EDDQ-3 High-Voltage Cable Outer Sheath Fault Locating InstrumentPreferred by the following types of users:：

1. Professional cable maintenance and testing teams: such as cable maintenance teams in large and medium-sized power supply bureaus and large-scale power-consuming enterprises. The majority of cable breakdown points can beEDDQ—3Quickly locate the approximate piercing position. When used in conjunction with the wave reflection method and a fixed-point instrument, each takes advantage of its strengths, resulting in faster and more reliable positioning.

2. Small-scale Users: Such as small power supply bureaus and medium-sized electricity-consuming enterprises. Cables are generally not extensive, with clear paths and limited lengths, and the number of faults is relatively low. If a complete set of wave reflection locator is chosen, it is expensive and requires high quality and experience from the users, making it not a favorable option.EDDQ-3 High-Voltage Cable Outer Sheath Fault Locating Instrument，Priced affordably, easy to operate, and capable of handling daily needs, it's a great choice.

3. Cable Production Factory: On-site, this equipment can be used for pinpointing various cable breakdown points. By pairing with a digital capacitance meter, it can identify broken wire locations. The device is lightweight and portable, making it convenient for providing on-site location services to cable users.