Under What Circumstances Will Terminal Blocks Be Used?

The terminal block is used to facilitate the connection of wires. It is actually a piece of metal enclosed in insulating plastic. There are holes at both ends to insert the wire, and screws are used for fastening or loosening. For example, two wires need to be connected sometimes, and they can be disconnected at any time by terminals They are welded or twisted together, which is very convenient and fast. And suitable for a large number of wire interconnection, in the power industry there are special terminal blocks, terminal boxes, above all terminal blocks, single layer, double-layer, current, voltage, common, broken and so on. A certain crimping area is to ensure reliable contact and to ensure enough current. In fact, the terminal is also called terminal block.

1. What is the purpose of the grounding terminal block in the distribution box? A: the grounding terminal is a special terminal for ground wire. At present, China's power consumption is three-phase four wire system. The zero line is separated from the ground wire. The ground wire is generally connected to the ground wire of the socket to protect the safety of electricity!

2. When to use terminal block? A: terminal block is required for wire connection between different equipment, and terminal block is also required for some plug-ins (modules).

3. When is the terminal strip needed in the electrical cabinet? 4. What does 4En in terminal block model mean? A: 4En means contact area of 4mm2.

5. What is the function of terminal block? A: convenient for wiring; for example, when installing the distribution cabinet, the signal lamp or meter on the cabinet door should be connected with terminals. It is convenient to check the line and measure in case of failure. Node expansion; node expansion with the same wire number.

6. How to select transformer and terminal block in substation design? Answer: if the capacity of the transformer should be calculated, it is not allowed to be too large or too small; the distance between the terminal block and the ground is generally not less than 350mm, and the current circuit must adopt the current test terminal with ot connection.