How the DD28 type meter screws to make the meter slower

First of all, let's talk about the role (principle) of the four binding posts, one and two ends are connected to a coil with a very thick wire diameter, and the current used is expressed from this coil (the wire diameter is about 2 square meters, and the size of the meter is the thickness of this coil), and the connection method of one in and two out is forward rotation, and the connection method of one out and two in is reversed. The three and four two binding posts are actually the same as a binding post, which is a pole, and the third, fourth and fifth ends are connected to a very thin coil, which has been consuming electricity, that is, the electricity consumed by each meter, as long as the five ends of the connecting piece are disconnected, the coil will not be energized, and the meter will not turn, generally.

The third and fourth ends are connected to the zero line, and the fifth end is connected to the live wire, if you want to make the meter slower, it is not good to do it from the outside, open the meter, there are two screws inside, there is a two-way arrow drawn on the outside of the screw, and there is a + and - sign at both ends of the arrow, and the screw is slower in the direction of the -sign, and the direction of the addition is faster.

1 and 3 are incoming lines, 2 and 4 are outgoing lines, phase wires (live wires) are from 1 into 2 out, neutral wires (neutral wires) from 3 into and then from 4 out, in fact, 3 and 4 are the same binding post, such as 1 and 2 are connected, only one of the 3 and 4 binding posts needs to be connected to a zero line watt-hour meter to work normally. The upper and lower screws you mentioned are used to tighten the wire, and they cannot be loosened. If you want to make the meter slower, please pay attention to open the junction box cover, there is a terminal post between the terminal post 1 and 2, this binding post is connected to 1 with a dozen connecting pieces, unscrew the screws on this binding post to separate the connecting piece from it, then the meter will slow down, pay special attention to the current coil of the meter that is disconnected at this time, that is, only the voltage coil is working at this time.

Because the wire diameter of the voltage coil is thin and cannot withstand a large current, that is, the meter at this time can only bear a smaller load, (a smaller power electrical equipment).

If you want to reverse, change the order of the wires of the first and second piles, and if you want to stop, open the No. 5 connecting piece of your mark so that it cannot be connected. Anything else I don't understand, asking me.

It has been changed earlier, there is leakage protection, and you trip immediately after shorting

The screws marked with positive and negative signs on the left side of the glass of the old watch are slow, but the one has a lead seal, which can be adjusted by opening the glass cover. The adjustment to the negative sign is slow, but it's a small one.

Smart energy meters can provide users with electricity consumption information and energy consumption data. Through data comparison, it can reflect the difference between energy-saving products and high-energy-consuming equipment, and guide users to adopt advanced energy-saving technologies and high-efficiency equipment, so as to improve the efficiency of terminal electricity consumption. At the same time, it can provide users with scientific electricity suggestions, power information, power outage notices, reminder information, etc.

So as to strengthen the management of electricity marketing.

Extended Information: Notes:

Please keep the IC card in a safe place, avoid bending or breaking, and do not put it in a wet place.

Please choose a high-quality alkaline dry cell battery, and pay attention to the polarity when installing the battery. Do not mix old and new batteries, and do not mix batteries from different manufacturers and models. Only the water meter needs to replace the battery (3 No. 7 batteries), and the general service life is about 1 year.

Hello, the position of the meter speed adjustment screw may vary depending on the meter model, but generally speaking, the meter speed adjustment screw is usually located on the shell of the meter, that is, behind the meter cover. It is usually necessary to use a screwdriver or a special clip to open the meter cover and adjust the speed of the meter. It should be noted that adjusting the speed of the meter is a relatively technical work, and it is not recommended for non-professionals to adjust it privately, so as not to affect the normal use and measurement accuracy of the meter.

If you need to adjust the speed of the meter, it is recommended to consult the local power company or professional electrical maintenance personnel to ensure the safety and accuracy of the adjustment.