Ettevaatusabinõud kontrollimine kontroll liin leke koos multimeeter
Fault Finding Analysis
Before analyzing where the leakage occurs, we must first look at the fault phenomena and obvious features in the home; secondly, observe kas there are intuitiivne fault points from the surface, and then proceed to the next step of inspection.
1. Esimene lahtiühendamine the main isoleeriv lüliti of meie toide sisselaskeava liin, ja lülitamine välja kõik kasutaja's elektriline koormus, selline nagu vooluvõrgust lahtiühendamine the külmik, lahtiühendamine the vesi pump lüliti, jne.
2. Put the gear of the digital multimeter on the 200M gear of the ohm gear, place one test lead on one of the two outlets on the load side, and the other test lead touch the wall, soovitavalt the grounding wire or a temporary Ground wire. After the number display on the multimeter is stable, the insulation resistance value of the main line is read out.
If the insulation resistance value is less than {{0}}.5 megohm, then there is a problem with the main line. If the insulation resistance is above 0.5 megohm, it can be ruled out that there is a problem with the main line. Use the same method to measure another wire, and also check the value to see if there is a problem with the main line.
3. Kontroll isolatsioon takistus väärtus of the šunt ja iga elektriline seade, ja kasutamine the same meetod to check one one until the fault point is found.
Toimimine ettevaatusabinõud
1. When using the 200M gear of the ohm gear of the multimeter, be careful not to touch the metal part of the test pen with your hands when measuring, otherwise the reading will be inaccurate.
2. Millal mõõtmine erinevad elektrilised seadmed, pööramine tähelepanu tühjenemine esimene to ennetamine mahtuvus vool sisse elektriline seadmed alates haigettegemine inimesed.
