NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Language
NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–Noyafa Cable Tester
How to use the live cable identifier The use method and measurement steps of the cable identifier are as follows: 1. Disconnect the connection point of the grounding trunk from the grounding body, or disconnect the connection point of all grounding branches on the grounding trunk. 2.
How to use the two grounded live cable identifiers How to use the live cable identifiers The use and measurement steps of the cable identifiers are as follows: 1. Disconnect the connection point of the grounding trunk from the grounding body, or disconnect the connection point of all grounding branches on the grounding trunk. 2.
Insert two grounding rods into the ground 400mm deep, one is 40m away from the grounding body, and the other is 20m away from the grounding body. 3. Place the megohmmeter on a flat surface close to the ground and wire it.
Live cable identification instrument (1) Use a connecting wire to connect the terminal E on the meter and the grounding body E of the grounding device′. (2) Use a connecting wire to connect the terminal C on the workbench to the ground rod C 40 meters away from the grounding body'connect them. (3) Use the connecting wire to connect the terminal P on the workbench to the grounding rod P 20 meters away from the grounding body'connect them.
Live Cable Identifier 4. Adjust the coarse adjustment knob (there are three adjustable ranges on the coarse adjustment knob) according to the grounding resistance requirements of the measured grounding body. 5.
Shake the shaker evenly at about 120 rpm. When the needle is deflected, adjust the dial until the needle is centered. The grounding resistance of the grounding body under test is multiplied by the reading set by the fine adjustment dial and the coarse adjustment positioning multiple.
For example, if the fine adjustment reading is 0.6 and the coarse adjustment resistor positioning multiple is 10, the measured ground resistance is 6Ω. 6. In order to ensure the reliability of the grounding resistance measurement value, the measurement direction must be changed and the measurement must be re-measured.
Take the average of several measured values as the grounding resistance of the grounding body. Shenzhen Noyafa Electronic Technology Co., Ltd.
Copyright © 2022 SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED - www.noyafa.net All Rights Reserved.