Secondary Wiring Standards for High- and Low-Voltage Switchgear
Release time:
2023-02-01
Source:
Standard for secondary wiring of high- and low-voltage switchgear: cables shall be secured in place using binding wire or cable ties; the specifications of the cable ties must match the cable size and be of a uniform type and model; the orientation of the tie ends must be consistent, and the longer portion of the cable tie should be trimmed off.
High pressure, low pressure Power distribution Secondary Wiring Standards for Cabinets
From an electrical-connection standpoint, the design of high- and low-voltage switchgear shall prioritize aesthetic appeal, ease of use, and operational convenience during construction, as well as straightforward maintenance and fault-finding. Wiring should be planned with a holistic approach, ensuring neatness, uniformity, and harmonious integration to convey a sense of overall beauty; individualistic or haphazard arrangements must be avoided to prevent a cluttered and disorganized appearance.
1. Cable tidying
1.1 Cable routing shall be neat and orderly, with consistent refractive indices and appropriate tension; distortion, crossing, or chaotic arrangement is prohibited.
1.2 Cables shall be secured in place using binding wire or cable ties. The specifications of the cable ties shall match the cable size and be of a uniform type and model, with the tie ends oriented consistently; the longer portion of the cable tie shall be trimmed off.
2. Cable Termination Fabrication
2.1 When stripping cable insulation, exercise caution and maintain an appropriate stripping depth to avoid damaging the conductor’s insulation.
2.2 The fabrication of cable joints shall use plastic tape and black plastic insulating tape.
2.3 When forming the head, neatly wind a bright red plastic tape around it, and after shaping, seal it with black plastic tape.
2.4 When forming the cable termination, fold the plastic tape over and tightly pull it taut while winding. During winding, ensure that the tape is firmly pressed against the junction between the copper core cable and the cable jacket. The cross-section of the upper portion of the termination must be aligned and perpendicular to the cable’s central axis, resulting in a solid, compact cylindrical shape with a smooth surface and an aesthetically pleasing, well-proportioned appearance; spindle-shaped deformations are strictly prohibited.
2.5、High Voltage and Low Voltage Power distribution The length of the cable end in the cabinet should be approximately 26 mm; the hole diameter must not exceed the insulating sleeve diameter by more than 2 mm; and the bundled length of the cable joint within the cable protection sleeve is generally around 13 mm.
2.6 After the cable conductors are bundled, the cable joints shall be at the same elevation and lie on a single horizontal plane.
2.7 The cable’s metallic shield, tape, and core shall be reliably extended outward to facilitate grounding.
3. Cable Marking
3.1 High Voltage and Low Voltage Power distribution Cable identification tags for cabinets are printed using a microcomputer and manufactured via injection molding, with the basic information including cable specifications, model designation, primary applications, and direction of travel.
3.2 The hanging of identification signs shall use corrosion-resistant, mildew-preventing cords made of synthetic fibers.
Select and purchase Power distribution What should I pay attention to when柜ing?
1. Is the box size appropriate?
2. Is the quality of the electronic components reliable?
3. Uses of the Distribution Cabinet
4. Do the wiring standards comply with national standards?
5. Operating Voltage and Waterproof Rating Specifications
6. Environmental and Site Conditions for Distribution Cabinets
7. Exercise extreme caution when selecting a manufacturer; consider visiting the facility to assess its scale of operations and production capacity, ensuring that the manufacturer holds the necessary production license and can deliver on time.
8. The quality of a product can be assessed by examining factors such as the thickness of the enclosure, the brand reputation of the electrical components, the neatness of the wiring terminals, and the stability of the current output.
9. Investigate customer reviews for completed projects served by the manufacturer: What is the failure rate? Is after-sales service comprehensive and well-established?
Company News
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