Key Points of Power Supply and Distribution Design in Purification Workshop Construction

In the construction of purification workshops, power supply and distribution design is of crucial importance, as it is related to the normal operation of the workshop, production efficiency, and product quality. Guangzhou Kunling Purification Equipment Co., Ltd. is experienced and well aware of the key points.

I. Load grade and calculation

1. Determination of load grade

Based on production processes, equipment importance, and the impact of power outages, determine the load grade of the purification workshop. Key equipment, purification air conditioning, and emergency lighting are often classified as first or second-level loads. For example, in a chip manufacturing workshop, photolithography machines, which cause huge losses in case of power outages, belong to first-level loads.

2. Load calculation

Accurate calculation is the foundation. It is necessary to statistically analyze equipment power, operating time, and simultaneous use coefficient. Determine the total calculated load using reasonable methods to provide a basis for equipment selection and avoid overdesign. For example, in a pharmaceutical purification workshop, consider the equipment in different production processes and the load changes of the air conditioning system.

II. Power supply and distribution system

1. Power supply reliability

To meet the requirements of first and second-level loads, two or more independent power supplies are needed, combining municipal power and backup generators. When there is a power outage in municipal power, the generator automatically starts to ensure the power supply for key equipment. The incoming line and laying should comply with specifications, such as setting up a dual-power switch.

2. Distribution system structure

Generally, a combination of trunk type and radial type is used. For important equipment and areas with large loads, such as purification air conditioning units and large production equipment, radial distribution is used; for low-power equipment, trunk distribution is used. Set up hierarchical protection, such as short-circuit, overload, and leakage protection. Install circuit breakers and leakage protectors in the distribution box.

III. Lighting design

1. Illumination requirements

Meet illumination standards according to areas and processes. The illumination in production areas is high, and that in non-production areas is low. Pay attention to uniformity. For example, in the production line of an electronic assembly workshop, the illumination should reach 500 - 750 lux, and the uniformity should not be less than 0.7.

2. Selection and layout of lighting fixtures

Select high-efficiency and energy-saving lighting fixtures with dustproof, waterproof, and anticorrosive properties. LED is preferred. Layout according to the building structure and process layout. Install by suspending or ceiling mounting. Set up emergency lighting and evacuation indication signs. The illumination and duration should comply with regulations.

IV. Grounding and lightning protection system

1. Grounding system design

Adopt a comprehensive grounding system where working grounding, protection grounding, and lightning protection grounding are shared. The grounding resistance should meet standards. For electrostatic-sensitive workshops, set up an electrostatic grounding system. For example, in a semiconductor manufacturing workshop, set up a grounding grid to connect equipment.

2. Lightning protection measures

Although it is an indoor building, lightning protection still needs to be considered. Determine the lightning protection level according to the lightning activity in the area and the building conditions. Set up lightning arresters such as lightning rods and lightning conductors and down conductors. Install surge protectors for important equipment, such as in power distribution rooms and computer rooms.

V. Selection and installation of electrical equipment

1. Equipment selection

Meet the environmental requirements of purification workshops. For example, transformers, switch cabinets, etc. should have good protection performance. The parameters should comply with the design. For frequently operated equipment, select reliable products. For example, switch cabinets with a protection level of IP54 or above.

2. Equipment installation

Install strictly according to specifications and design. The layout should be reasonable. The installation should be firm and the wiring reliable. Special treatment should be given to special equipment. For example, the electrical control cabinet of the purification air conditioning unit should be installed in a ventilated and dry place, and the connecting line should use shielded cables.

VI. Energy-saving measures

1. Optimize the distribution system

Select the appropriate transformer capacity and model. Optimize the line layout. Adopt reactive power compensation devices to improve power factor and reduce losses.

2. Use energy-saving equipment

Select energy-saving transformers, high-efficiency motors, LED lighting fixtures, etc. The energy-saving effect is remarkable. For example, the no-load and load losses of energy-saving transformers are reduced.

3. Intelligent control system

Use intelligent systems to control lighting, air conditioning and other equipment. Adjust the operating state according to actual conditions. For example, intelligent lighting systems adjust according to illumination and personnel activities. Purification air conditioning systems adjust parameters according to temperature and humidity changes.

The power supply and distribution design of purification workshops involves many key aspects. It is necessary to comprehensively consider various factors to ensure safe, reliable, and energy-saving operation. Guangzhou Kunling Purification Equipment Co., Ltd. attaches importance to power supply and distribution design, pays attention to details, and provides high-quality solutions. If you have any questions or need to know more, please feel free to contact us.