Portable Cable Outer Sheath Fault Pinpointing Device
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Detailed Product Description
Basic Info.Model NO. XHHD523L Test Mode Saved Test Usage Audio Cable Tester, Coaxial Cable Tester, Digital Cable Tester Test Region Forming Cable Certification CE, ISO Customized Customized Color Orange Test Frequency 128Hz/111Hz/105Hz/94Hz(Afc) Resolution 0.5m Transport Package Wooden Box Filled with Foam Inside Specification 350mm*280mm*170mm Trademark XZH TEST Origin China Xi'an HS Code 8543201000 Production Capacity 1000pieces/Year Product DescriptionXHHD523L Cable Fault Sheath Locator Designed based on the principle of MURRAY Bridge. The equipment has
the characteristics of high voltage, light weight,convenient
operation and High voltage Cable sheath fault locator.
Testing step: 1. Check the breakdown status of the cable with a multimeter, a rocking watch or other pressure resistant equipment, and record the value of each core's insulation resistance against the ground or residual voltage breakdown. 2. Record the length, model, cross section and other parameters of
the cable to be tested, and inspect the route along the cable
laying path. In the remote short-circuit fault cable and the
auxiliary cable outlet terminal, leave one person at the remote
monitoring to avoid high-pressure injury. 3. wiring. The ground of the instrument is reliably connected to
the grounding body of the positioning site. Ground rods are connected to the instrument ground. The measuring head (black clip) is connected to the faulty cable core and the measuring end (red clip) is connected to the auxiliary cable core. 4. bridge zero (high voltage knob is not zero). Turn on thepower
and rotate the zero button to zero the galvanometer. 5. power supply connected to AC220V. 6. Boost pressure. Turn on the power switch and the power indicator
lights up. When the high pressure knob is turned counterclockwise,
the zero position is activated. 7. Turn the high pressure knob clockwise and watch the voltmeter
and ammeter until the ammeter exceeds 5mA. If the current is not
stable, the voltage may continue to rise for a period of time to
form a stable arc or conductive area, stabilizing the current
during the test. 8, balance adjustment. Rotate the zoom knob clockwise to increase
the sensitivity step by step until the galvanometer deflects significantly but does not overshoot. Rotate the dial to make the galvanometer zero. (If the pointer is to the left, rotate clockwise, the pointer is to the right, and counterclockwise). Take note of the reading P1 of the cymbal dial at this time. 9, drop voltage, discharge. The clamp exchange position will be
measured and steps (4) to (10) will be repeated to obtain another reading P2, which should have P1+P2=1000 10. Calculation. Location of fault point X=2×L ×P1‰ Pay more
attention to the "2" in the formula. The auxiliary cable will double the number of cables involved in the calculation. |
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| Product Tags: portable cable fault locator cable sheath fault detector handheld cable pinpointing device |
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