When the electric meter has an alarm failure, the smart electric meter will remind the user with a liquid crystal display and an alarm light. When the electric meter is in an alarm state, it needs to ...
Precautions for the use of DC ammeter1. The ammeter should be connected in series in the circuit.2. Choose the appropriate range according to the measured current. For an ammeter with two ranges, it h...
1. There are certain differences in the structure between them. The current transformer is generally made of thick wire. It should be used in series with the load that measures the current, and the v...
A shunt for an electric energy meter, comprising two sheet metal bases and a piece of manganese copper sheet; the manganese copper sheet is welded to the upper part of the two sheet metal bases, and t...
Generally, there are four bolts on the shunt, two large and two small. Two large bolts are used to connect the shunt in series to the circuit of the current signal to be measured. Two small bolts are ...
1. Classified by purpose From the purpose of classification of relays, it can be divided into two types: control relays and protection relays. Among them: thermal relays, overcurrent relays, and unde...
"Meters and Copper Shunts" are the most often searched keywords on the Internet. Meters are a common form of copper for underground gas and oil lines, water pipelines, and telecommunications cables....
Meters are electrical device used to indicate the distance between two points. It is fixed against the roof of a building and is usually made from copper, brass or steel to serve as indicator of the...
The technical constraints of shunts are different from standard resistors. Precision shunts are high-precision resistors with low ohmic values. When hundreds of amperes of current must be measured, ...
The protection object of the thermal relay is the motor, so the technical performance, starting situation, load nature of the motor and the allowable overload capacity of the motor should be understo...
1. The method of interlocking two intermediate relays If it is assumed that the relay power supply is a power supply that will not lose power for a long time: The power of the attraction loop of the...
On the core and coil. There is eddy current in the electromagnet core of AC contactor, so the electromagnet core is made one by one and stacked together. To prevent electromagnetic release at the mome...
Haiyan Weijia Electric Technology Co., Ltd. was established in 2008 with a registered capital of 20 million yuan, the company covers an area of 13 acres, with a total construction area about 12,000 square meters and more than 300 employees.
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