Design questions regarding the instrument power supply cabinet
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Hello, sea friends. I’ve run into a problem recently regarding the power supply cabinet for instruments. What aspects need to be clearly addressed during its design? 1. Must the system diagram of the instrument power cabinet include 24VDC during design? (Some instruments are powered by 24VDC.) 2. If 24VDC power is included, is it still necessary to explain how 220VAC is converted into 24VDC? 3. What are the requirements for the layout of the main circuit breaker and the branch circuit breakers when designing the power supply cabinet? 4. What is the common way to open a power supply cabinet? 5. When counting the materials for the power supply cabinet, is it necessary to list the model and specifications of the circuit breakers? Thank you to all the sea friends
The power supply cabinet has a 220V AC main input – main switch – sub-switches; several circuits provide 220V AC power, while other circuits are powered by a 24V DC regulated power supply – 24V DC sub-power switches – and individual 24V DC power supplies
Power cabinets usually have front doors; in the case of PLC cabinets, most of the circuit boards come equipped with a 24V power output
1. The system diagram of the instrument power cabinet certainly includes 24VDC during design. 2. It is not necessary to indicate this, as the power supply system diagram already shows which ones are 24 volts and which ones are 220 volts. 3. When designing the power supply cabinet, the main circuit breaker is usually placed at the front, with the branch circuit breakers located at the back. 4. The door type of the power supply cabinet is determined by the indoor space available; it can have double doors or single doors. 5. When compiling the material list for the power supply cabinet, it is necessary to include the parameters and specifications of the circuit breakers.
1. The system diagram of a general instrument power supply cabinet includes 24VDC during design. 2. It should be noted that the specifications are sufficient to be indicated in the equipment list on the layout plan; it is not necessary to specify the model, as it is sufficient to state that the cabinet manufacturer is responsible for it. 3. When designing the power supply cabinet, the main circuit breaker is usually placed at the front, with the branch circuit breakers located at the back. 4. The door type of the power supply cabinet is determined by the indoor space available; it can have double doors or single doors. 5. When compiling the material list for the power supply cabinet, it is necessary to include the parameters and specifications of the circuit breakers.
[For the instrument power supply cabinet, what issues need to be clearly addressed during the design phase? 1. Must the system diagram of the instrument power cabinet include 24VDC during design? Of course, if there are other power sources needed as well. 2. If 24VDC power is included, does it still need to be explained how 220VAC is converted to 24VDC? Simply choose a power supply unit with a 24V output. 3. What are the requirements for the layout of the main circuit breaker and the branch circuit breakers when designing the power supply cabinet? Start with the general and then move to the specific details. 4. What is the common way to open a power supply cabinet? It works whether it opens from the front or from the back. 5. When counting the materials for the power supply cabinet, is it necessary to list the model and specifications of the circuit breakers? Of course it’s necessary; otherwise, how can one make a purchase?
Are there norms and standards as a basis?