With the requirements of motor operating conditions and motor protection, motor winding temperature, bearing temperature, motor vibration and other test components soon entered the motor manufacturing industry, such as PT00 and PTC are the most widely used temperature measurement components. The terminal block is derived from this, which is a wiring device connecting the motor temperature measuring element and the customer control end. Terminal block is commonly used in electrical engineering, which is a series of combined wiring fixed devices, the number of terminal points in each row is different, and its model can be determined according to the needs of engineering technical parameters.
1. What is the purpose of the ground terminal block in the distribution box?
Answer: The ground terminal is the special wiring terminal of the ground wire, and the electricity consumption in our country is now three-phase four-wire system. The neutral line is separated from the ground line. The ground wire is generally connected to the ground wire of the socket to protect the safety of electricity!
2, when to use the terminal block?
A: The cable connection between different devices requires a terminal block, and some plug-ins (modules) also require a terminal block.
3. When is the terminal block needed in the electrical cabinet?
A: With one mounting unit as the boundary, in and out of this unit requires a wire terminal block.
4. What does the 4EN in the terminal block model mean?
A: 4EN indicates a contact area of 4 square millimeters.
5. What is the function of the terminal block?
A: Convenient connection; For example, when installing a distribution cabinet, the signal light or meter on the cabinet door should be connected to the terminal. Easy to check the line; Easy to measure in case of failure. Node expansion; Nodes with the same line number expand.
6. How to choose transformer and terminal block in substation design?
A: The capacity of the transformer should be calculated, too big or too small; Generally, the distance between the terminal block and the ground is not less than 350mm. The current circuit must use the current test terminal of the OT connection.
