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FAQ
- How can the clamp meter measure alternating current?
- The general type for measuring current clamp meter, you open the jaw vise current wires can be, if you want to measure the AC voltage, can use the pen, with a multimeter used almost
- How can the air outlet of the air conditioner in the air conditioner flow out?
- Drainage pipe bad: because the drainpipe aging, relaxation or bend into wave shape, resulting in poor drainage. Check whether the current reaches the rated current indicated by the nameplate in the refrigeration operation. (not up to rated current may be refrigerant leak).
- How to use the correct measuring clamp current meter
- 1, in the high pressure loop measurement, prohibit the use of lead from the clamp ammeters another meter measurement. When measuring the phase current of high voltage cable, the distance between the cable head and line should be above 300mm, and the insulation is good, which can be carried out when the measurement is convenient. 2, the observation time, we must pay special attention to keep a safe distance from the head and charged part of the human body and any part of the charged body distance shall not be less than the entire length of the clamp meter. 3. When measuring low voltage fusible fuse or horizontally arranged low voltage bus current, each phase shall be protected or insulated by insulation materials, so as to avoid interphase short circuit4, the use of high voltage clamp current meter should be paid attention to when the voltage clamp current meter, prohibit the use of low voltage electric current clamp meter high voltage measurement circuit. With high voltage clamp meter measurement, by the two person operation, non duty measurement should fill in second working ticket, should wear gloves when measuring stand on the insulating mat, must not touch the other equipment, to prevent a short circuit or grounding.5, after the end of the clamp current meter to measure the switch to the maximum file, so that next time use careless flow; and should be kept in a dry room6, when the cable has a ground, it is strictly prohibited to measure. To prevent the breakdown of the ground due to the low insulation level of the cable head, and endanger personal safety.7, clamp meter measurement, near the wire current, also have influence on it, so must pay attention to the position of the wire to the equal phase.8, maintenance should not live operation, in case of electric shock.
- A fire was found with a ground electricity? Stealing electricity.
- To do so is very dangerous, prone to accidents, in case the public grounding wire grounding resistance is large, it will cause the water running electricity, indirectly causing electrocution, death accident, that would be troublesome
- My model number is UA9250. Would you like to ask how to distinguish the gears on the following table?! There are no letters on it. Some numbers will do. Please explain
- Usage method(1) mechanical zeroing is necessary before measurement(2) select the appropriate range, first select large, then select small range, or see the nameplate value estimation.(3) when the minimum range measurement is used and the reading is not obvious, the number of turns to be measured shall be measured by the number of turns in the center of the jaw, and the readings = indication value * range / full bias * turn number(4) when measuring, the wire should be placed in the center of the jaw and close the jaw so as to reduce the error.(5) after measuring, place the change-over switch at the most measuring range.
- To measure current, how many transformers are used in 0-100A? How big is the ammeter? How do I get the S1'S2 line?
- Under normal circumstances, if one hundred is the maximum power output of current equipment when the transformer is one hundred, 100/5 transformer can; if the rated current of one hundred a, choose 150/5, ammeter and transformer ratio should be one to.Mutual inductor S1 terminal current meter A1, A2, then S2 and then ground
- How to distinguish stealing from electricity
- 1, carefully check the internal wiring of this new watch, whether or not the connection is off or short circuited.2, check the line of the meter to see if the user has other circuitry to bypass the meter.3, check the line, we must ensure that the entire line intact, there is no "private", "random" phenomenon.
- Excuse me, great God. What is a DC clamp type?
- Clamp meter is composed of a current transformer and current meter assembly. The iron core of the current transformer can be opened when the wrench is tightened; the wire through which the current is measured can be cut through the opening of the iron core without cutting off, and when the wrench is released, the iron core is closed.
