Low-voltage line and low-voltage equipment leakage fault finding method - Database & Sql Blog Articles

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1. Preparation tools: multimeter, soft copper wire, a full length of about 12M, boarding tools, foot buckles, belts, screwdrivers, a total length of 30CM. 2. First, in the power distribution room, the road that can not send electricity is leaking The segment is opened, firstly, it is possible to eliminate the possibility of power leakage. 3. When the leakage is leakage on the side of the leakage load, remove the zero line on the side of the leakage load, and connect the black meter on the load side zero line with the red meter of the multimeter. Connect a soft ground wire and a screwdriver to make a temporary grounding wire, but the grounding point must be wet. If the measured value is below 2000 ohms to several hundred ohms, it is not directly grounded. If the measured value is 0 ohms, it is directly grounded ( The measured value is the value of the four lines because it is connected in series through each electric appliance. 4. Find the first branch along the line or disconnect it, and measure the value according to the above method (the four bow lines of the overhead line must be all) Demolition) If the measured value is on the first branch line, look for the branch line. The one-to-one demolition line includes the powerhouse to remove the value above 2000 ohms, which means that the line has been leaking. Finding the leakage point is very convenient, but the staff is at 4 5 people will be fast. 5. Note: The grounding line can not be hung on the leakage load side. Someone should be in the power distribution room. The person on the pole must be supervised. After finding the fault point, the branch line and the broken bow line will be connected. Connected and the zero line of the leakage port is connected, you can test the power.