Product Use:
FZY-3 Mine Stray Current Measuring Instrument is a portable rectifier instrument with high sensitivity, multi-range protection circuit. Its characteristics are: wide measurement range, with a total of twenty ranges, can separately measure AC/DC stray voltage and stray current, does not require its own power supply, safe and reliable. Suitable for testing the current and voltage generated by steel rails, water pipes, cables, etc. in coal mines, preventing premature explosion and other combustion and explosion accidents caused by stray current discharge, reducing the fire source in the mine to the lowest limit.
FZY-3 Mine Stray Current Measuring Instrument Product Usage Method:
4. When AC stray current cannot be measured at a location, DC stray current should also be tested, and vice versa.
5. When measuring stray voltage value, the gear positions are: 50mA corresponds to 0.2V, 250mA corresponds to 1V, 1A corresponds to 4V, 5A corresponds to 20V, 10A corresponds to 40V. (That is, the current value multiplied by 4 is the voltage value)
6. When the stray current magnitude is unknown, first set to the maximum range gear, then gradually decrease until the appropriate measurement gear.
7. When the measured current is greater than 5A, the instrument should only be used for short-term measurement; when the measured current is greater than 10A, the instrument should only be used for instantaneous measurement. To avoid large current burning out components and the instrument.
8. When measuring DC stray current, if the meter pointer deflects in the reverse direction, swap the test leads.
9. When the instrument is not in use, it should be placed in the "Off" position.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
