Cable, distribution box leakage detection methods to consult.
In testing the ground resistance and insulation resistance of the cable, the ground resistance is measured by the resistance of the wire and ground with a shake meter. An insulation resistance is a measure of resistance between wires. Measurement method with two lines of shaking table are respectively connected to the two measured object, shaking the handle reaches a certain speed value at. You can search for the use of a shake table, you say, like a remote controller, it should be an electronic multimeter. Using the method of search, which is the basic knowledge of electrical engineering.
Distribution box: the distribution box is assembled by the switch equipment, measuring instrument, protective appliance and auxiliary equipment according to the requirements of the electrical wiring, in the enclosed or semi enclosed metal cabinet or on the screen, forming the low voltage distribution box. During normal operation, the circuit can be switched on or off by manual or automatic switch. The commonly used distribution boxes are made of wood and metal. There are two kinds of distribution boxes.
In testing the ground resistance and insulation resistance of the cable, the ground resistance is measured by the resistance of the wire and ground with a shake meter. An insulation resistance is a measure of resistance between wires. Measurement method with two lines of shaking table are respectively connected to the two measured object, shaking the handle reaches a certain speed value at.
The ground resistance of the two floor is a little inaccurate, and the grounding resistance is the resistance of the grounding body. The resistance is not measured by shaking meter, and the grounding resistance measuring instrument is used. If the ground resistance of the two floor is changed to ground, the insulation resistance is basically correct.The leakage of the line shall be measured: interphase insulation resistance (phase line and phase line), line and zero line insulation resistance, line to ground insulation resistance, and zero line to ground insulation resistance.If you have a shaking table, you don't need a multimeter. The meter is specially designed to measure the insulation resistance. Test whether leakage is measured insulation resistance is not up to standard (minimum not less than 0.5M), if buried, it is best not to be less than 1M.
