Stray Current Comprehensive Tester Usage Methods and Precautions
1. Before measurement, screw the test leads onto the two binding posts respectively, and adjust the meter pointer to the zero scale line.
2. Place the test leads connected to the binding posts on the two points to be measured (e.g., rails, water pipes, cable sheaths, coal, ground, etc.). The two test points should be on different conductors, with a distance of about 2 meters. Normally, measure every 50-100 meters, or temporarily determine test points as needed. Set the switch to the appropriate range, and the meter reading will give the corresponding current value after conversion.
3. During measurement, ensure good contact between the hard alloy tip of the measuring probe and the object under test. The instrument should be placed horizontally to ensure accurate readings.
4. If no AC stray current is detected at a location, also test for DC stray current, and vice versa.
5. When measuring stray voltage values, the corresponding ranges are: 50mA corresponds to 0.2V, 250mA to 1V, 1A to 4V, 5A to 20V, and 10A to 40V. (That is, the current value multiplied by 4 gives the voltage value.)
6. When the stray current magnitude is unknown, start with the highest range and then gradually decrease to the appropriate measurement range.
7. When the measured current exceeds 5A, the instrument should only be used for short-time measurements. When the measured current exceeds 10A, the instrument should only be used for instantaneous measurements to avoid burning out components and the meter due to large currents.
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, set it to the "Off" position.
1. Main unit: 1 unit
2. Test leads: 1 pair
3. Product manual: 1 copy
4. Product certificate of conformity: 1 copy
Brief Introduction:
Stray Power Tester: When the measured current exceeds 5A, the instrument should only be used for short-time measurements. When the measured current exceeds 10A, the instrument should only be used for instantaneous measurements to avoid burning out components and the meter due to large currents.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
