Cable Fault Locator

Basic Features:

Equipment utilizes a switch-mode power supply to form a high-voltage constant current source, with no-load voltage-15000VShort-circuit current30mAUtilizing high-sensitivity amplifiers and galvanometers for balance indication, the device forms a balanced bridge with a proportional potentiometer, all housed at a high potential. The test lines are specially designed double-core high-voltage rubber cables. They employ a four-terminal resistance measurement method to avoid errors introduced by lead resistance. The test lines are grounded through a woven shielding layer, and the control buttons on the panel are at ground potential. The bridge is operated via an insulated rod. The high-voltage constant current source and the bridge are integrated into a portable industrial enclosure. Consequently, the equipment is characterized by high voltage, light weight, ease of operation, and safe use.

Technical Features:

EDDQ—3The Fault Location Device for Extradosed High-Voltage Power Cables boasts three functions:

1DC Voltage Withstand Test: Equipment capable of output0～15kVDirect current voltage, suitable for cable DC withstand tests.

2Burn-through fault points: Reducing the resistance of burn-through and high-resistance as well as flashover fault points.

3Fault Pre-location: Utilizing the bridge principle for pre-location, the four-terminal resistance measurement method avoids the error introduced by the lead resistance.

At the same time,EDDQ—3High-voltage cable outer sheath fault locator is particularly suitable for:

1Post-laid cable with high breakdown voltage, particularly challenging to achieve low resistance in linear high breakdown voltage points, such as the linear high breakdown voltage of the cable's intermediate joints.

2Arc-through points with flashover, after breakdown, the constant current source can maintain the arc, with a stable current passing through the bridge, which has sufficient sensitivity.

3Defect points with low resistance but no puncture, such as insulation defects that do not puncture under operating voltage, which are discovered when the cable resistance is found to be low using a megohmmeter.

Technical specifications:

1Test Voltage:0～15kVNegative high voltage, continuously adjustable

2High Current:30mA

3Please provide the Chinese content to be translated into American English.0.2%·L±1) Mi

4Outer sheath burn-through output voltage:0～15kVContinuous adjustable

5Outer sheath burn-through output current:30mA

6Work Power Supply:AC220V±10%

7Interference Resistance:>100VAC

8Weight: ≤12kg

9No Chinese content provided for translation.L478mm × W360mm × H316mm