GB 50171-1992 Specification for the construction and acceptance of panels, cabinets and secondary circuit connections for electrical installation engineering GB50171-92
Some standard content:
Engineering Construction Standard Full Text Information System
National Standard of the People's Republic of China
50171—92
Code for construction and acceptance of switchboardoutfit completecubicleand secondarycircuitelectric equipment installation engineering standard
1992—12—16
1993—07—01
State Administration of Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering construction standard full text information system
Jointly issued
Engineering construction standard full text information system
National standard of the People's Republic of China
Electrical installation engineering panel, cabinet
and secondary circuit wiring construction and acceptance specification GB50171—92
Editor department: Ministry of Energy of the People's Republic of ChinaApproval department: Ministry of Construction of the People's Republic of ChinaEffective date: July 1, 1993
Engineering construction standard full text information system
Engineering construction standard full text information system
Official release of five national standards including "Electrical installation engineering rotating motor construction and acceptance specification" Notice of National Standards
Jianbiao [1992] No. 911
According to the requirements of the State Planning Commission's Letter of Bidding (1987) No. 78 and the Ministry of Construction's (88) Jianbiao Zi No. 25, five standards, including the "Specifications for Construction and Acceptance of Rotating Electrical Machines for Electrical Installation Engineering" jointly formulated by the Ministry of Energy and relevant departments, have been reviewed by relevant departments. The "Specifications for Construction and Acceptance of Rotating Electrical Machines for Electrical Installation Engineering" GB50170-92, "Specifications for Construction and Acceptance of Panels, Cabinets and Secondary Circuit Connections for Electrical Installation Engineering" GB50171-92, "Specifications for Construction and Acceptance of Storage Batteries for Electrical Installation Engineering" GB50172-92, "Specifications for Construction and Acceptance of Cable Lines for Electrical Installation Engineering" GB50168-92 and "Specifications for Construction and Acceptance of Grounding Devices for Electrical Installation Engineering" GB50169-92 are now approved as mandatory national standards and will be implemented from July 1, 1993. The third chapter of the original "Electrical Installation Engineering Construction and Acceptance Specifications" on rotating electrical machines, the fourth chapter on panels, cabinets and secondary circuit connections, the fifth chapter on batteries, the eleventh chapter on cable lines and the fifteenth chapter on grounding devices are abolished at the same time. This standard is managed by the Ministry of Energy, and the specific interpretation and other work is undertaken by the Ministry of Energy's Electric Power Construction Research Institute. The publication and distribution is organized by the Ministry of Construction's Standards and Norms Research Institute. Ministry of Construction of the People's Republic of China
December 16, 1992
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Revision Notes
This standard is edited by the former Ministry of Water Resources and Electric Power in accordance with the requirements of the State Planning Commission's Bidding Letter (1987) No. 78 and the Ministry of Construction's (88) Jianbiaozi No. 25. It is specifically compiled by the Ministry of Energy's Electric Power Construction Research Institute in conjunction with relevant units. During the revision process, the specification group conducted extensive investigations and studies, carefully summarized the experience since the implementation of the original specification, absorbed some scientific research results, and widely solicited opinions from relevant units across the country. Finally, our department reviewed and finalized the draft together with relevant departments. This specification is divided into five chapters and one appendix. This revision mainly adds content such as weak current circuit anti-interference, static protection and microcomputer monitoring. During the implementation of this specification, if you find any defects, please send your opinions and relevant materials directly to the Electric Power Construction Research Institute of the Ministry of Energy (Beijing Liangxiang, Postal Code: 102401), the management unit of this specification, for reference in future revisions. Ministry of Energy
December 1990
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Appendix 1
Installation of panels and cabinets
Electrical equipment installation on panels and cabinets
Secondary circuit wiring
Project handover and acceptance
Explanation of terms used in this specificationWww.bzxZ.net
Additional explanation
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 1 General Provisions
Article 1.0.1 This specification is formulated to ensure the construction quality of panel and cabinet installation and secondary circuit wiring installation projects, promote the improvement of engineering construction technology level, and ensure the safe operation of panel and cabinet installation and secondary circuits.
Article 1.0.2 This specification applies to the construction and acceptance of various types of distribution boards, protection boards, control boards, screens, desks, boxes and complete sets of cabinets and their secondary circuit wiring installation projects. Article 1.0.3 The installation of panels, cabinets and secondary circuit wiring should be constructed according to the approved design.
Article 1.0.4 When transporting and installing panels and cabinets, safety measures such as shockproof, moisture-proof, and preventing frame deformation and paint damage should be taken. If necessary, the installation equipment and vulnerable components can be removed and packaged separately for transportation. When there are special requirements for the product, it should still comply with the provisions of the product technical documents.
Article 1.0.5 Panels and cabinets should be stored indoors or in a dry place that can avoid rain, snow, wind and sand. Installation equipment and electrical components with special storage requirements should be kept in accordance with regulations.
Article 1.0.6 The equipment and instruments used must be qualified products that meet the current national technical standards and have qualified certificates. The equipment should have a nameplate. Article 1.0.7 After the equipment and instruments arrive at the site, they shall be inspected and accepted within the prescribed period and shall meet the following requirements:
1. The packaging and sealing are in good condition.
2. The model and specifications of the unpacking inspection meet the design requirements, the equipment is not damaged, and the accessories and spare parts are complete.
3. The technical documents of the product are complete
4. The appearance inspection is qualified according to the requirements of this specification. Article 1.0.8 The safety and technical measures during construction shall comply with the provisions of this specification and the current relevant safety and technical standards and product technical documents of the National Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Article 1.0.9 The construction of construction projects related to panel, cabinet installation and secondary circuit wiring installation projects shall meet the following requirements: 1. The construction quality of buildings and structures related to panel, cabinet installation and secondary circuit wiring installation shall comply with the relevant provisions of the current national construction and acceptance specifications for construction projects. When there are special requirements for equipment or design, their requirements shall also be met. 2. Before equipment installation, the construction project should meet the following conditions: 1. The roof and floor construction are completed and no leakage is allowed. 2. The indoor ground work is completed, and there is no water accumulation or debris in the indoor channels. 3. The pre-prepared parts and reserved holes meet the design requirements, and the embedded parts should be firm. 4. The doors and windows are installed.
5. All decoration work that may damage the installed equipment during decoration work or that cannot be constructed after the equipment is installed is completed. 3. For equipment with special requirements, the construction project should meet the following conditions before installation and commissioning:
1. All decoration work is completed and cleaned. 2. If special facilities such as air conditioning or ventilation devices are installed, they should be installed and put into operation.
Article 1.0.10
Use standard parts.
Article 1.0.11
Provisions of 1.0.11.
Fasteners used for equipment installation should be galvanized products, and the marking color of the simulated busbar on the panel and cabinet should be consistent with the marking color of the simulated busbar in the table
Voltage (kv)
AC 0.23
AC 0.40
AC 3
AC 6
Engineering 2 Construction Standard Full Text Information System
Table 1.0.11
Engineering Construction Standard Full Text Information System
Voltage (kv)
AC 1 0
AC 13.8~20
AC 35
AC 60
AC 110
AC 154
AC 220
AC 330
AC 500
DC 500
Note: ① The width of the simulated busbar should be 6~12mm; the color of the equipment simulation should be consistent with the rated color of the busbar of the same voltage level; ③ It is not suitable for weak current panels and process simulation panels. Continued Table 1.0.11
When the secondary circuit wiring construction is completed, when testing the insulation, there should be safety technical measures to prevent the damage of weak current equipment. After installation and commissioning, the reserved holes and cables in the building shall be 1.0.Article 13
The pipe openings shall be properly sealed.
In addition to the implementation of this specification, the construction and acceptance of panels and cabinets shall also comply with the provisions of the relevant national standards and specifications in force in Article 1.0.14. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Chapter 2 Installation of Panels and Cabinets
Article 2.0.1 The installation of foundation steel shall comply with the following requirements:, the allowable deviation shall comply with the provisions of Table 2.0.1. Allowable deviation of foundation steel installation
Non-straightness
Horizontality
Position error and non-parallelism
Note: Circular layout is in accordance with design requirements.
Allowable deviation
mm/full length
2. After the foundation steel is installed, its top should be 10mm higher than the leveled ground, and the trolley-type complete cabinet shall be implemented in accordance with the product technical requirements. The foundation steel should have obvious and reliable grounding. Article 2.0.2 When panels and cabinets are installed in vibrating places, anti-vibration measures should be taken according to design requirements.
Article 2.0.3 The connections between panels, cabinets and the sound equipment of panels and cabinets and various components should be firm. The main control panel, relay protection panel and automatic device panel should not be welded to the foundation steel. Article 2.0.4 When panels and cabinets are installed individually or in a row, their verticality, horizontal deviation, panel and cabinet surface deviation and the allowable deviation of the joints between panels and cabinets should comply with the provisions of Table 2.0.4.
The analog busbars should be aligned, and their errors should not exceed the parallax range. They should be complete and firmly installed.
Article 2.0.5 The terminal box should be firmly installed, well sealed, and moisture-proof and dust-proof. The installation location should be easy to check; when installed in a row, they should be arranged neatly. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Vertical degree (per meter)
Horizontal deviation
Disk surface deviation
Disk joint
Allowable deviation of installation of disks and cabinets
Top of two adjacent disks
Top of disks in a row
Side of two adjacent disks
Disk surface in a row
Allowable deviation (mm)
Article 2.0.6 The grounding of disks, cabinets, tables and boxes should be firm and good. The openable doors equipped with electrical appliances should be reliably connected to the grounded metal frame with bare copper soft wire. The complete cabinet should be equipped with a grounding device for maintenance. Article 2.0.7 The installation of complete cabinets should meet the following requirements: 1. Mechanical interlocks and electrical interlocks should act accurately and reliably. 2. The center lines of the moving contact and the static contact should be consistent, and the contacts should be in close contact. 3. The switching contacts of the secondary circuit auxiliary switch should operate accurately and have reliable contact. 4. The lighting inside the cabinet is complete.
Article 2.0.8 The installation of the drawer-type distribution cabinet shall also meet the following requirements: 1. The drawer should be pushed and pulled flexibly and lightly, without jamming or collision, and the drawers should be interchangeable. 2. The mechanical interlock or electrical interlock device of the drawer should operate correctly and reliably, and the isolating contacts can only be separated after the circuit breaker is opened.
3. The secondary circuit connection plug-in between the drawer and the cabinet body should have good contact. 4. The contact between the drawer and the cabinet body and the grounding of the cabinet body and the frame should be good. Article 2.0.9 The installation of the trolley-type cabinet shall also meet the following requirements: 1. Check that the "five protection" devices to prevent electrical misoperation are complete and flexible and reliable.
2. The trolley should be pushed and pulled flexibly and lightly, without jamming or collision, and the trolleys of the same model should be interchangeable.
3. After the trolley is pushed into the working position, the gap between the top of the moving contact and the bottom of the static contact should meet the product requirements.
4. The secondary circuit connection plug-in between the trolley and the cabinet should have good contact. 5. The safety isolation plate should be opened flexibly and move accordingly with the entry and exit of the trolley. 6. The position of the control cable in the cabinet should not hinder the entry and exit of the trolley and should be firm. 7. The grounding contact between the trolley and the cabinet should be in close contact. When the trolley is pushed into the cabinet, its grounding contact should be in contact before the main contact, and when it is pulled out, the grounding contact should be disconnected after the main contact.
Article 2.0.10 The paint layer of the panel and cabinet should be complete and undamaged. The brackets for fixing electrical appliances should be painted. The panel colors of the panels and cabinets installed in the same room and frequently monitored should be harmonious.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3, Installation of Electrical Appliances on Panels and Cabinets
Article 3.0.1 The installation of electrical appliances shall meet the following requirements: 1. The quality of electrical components is good, the model and specifications shall meet the design requirements, the appearance shall be intact, and the accessories shall be complete, neatly arranged, firmly fixed and well sealed. 2. Each electrical appliance shall be able to be disassembled and replaced separately without affecting the fixation of other electrical appliances and wire bundles.
3. The heating element should be installed in a place with good heat dissipation; the connection between two heating elements should use heat-resistant wires or bare copper wires in porcelain tubes. 4. The fuse specifications and the setting values of the automatic switch shall meet the design requirements. 5. The switching pressure plate shall have good contact, and there shall be sufficient safety distance between adjacent pressure plates. The adjacent pressure plates shall not be touched during switching; for the switching pressure plate with one end energized, the active end shall be non-energized when the pressure plate is disconnected.
Six. The signal lights, light signs, electric bells, electric whistles, emergency electric clocks, etc. of the signal circuit should display accurately and work reliably.
Seven. If the panel is equipped with device equipment or other electrical appliances with grounding requirements, its casing should be reliably grounded.
Eight. Closed panels and cabinets with lighting should ensure that the lighting is intact. Article 3.0.2 The installation of terminal blocks shall meet the following requirements: 1. The terminal blocks should be free of damage, firmly fixed, and well insulated. 2. The terminals should have serial numbers, and the terminal blocks should be easy to replace and convenient to wire; the height from the ground should be greater than 350mm.
Three. For circuit voltages exceeding 400V, the terminal board should have sufficient insulation and be painted with red marks.
Four. Strong and weak current terminals should be arranged separately. When there are difficulties, there should be obvious signs and empty terminals should be separated or partitions with enhanced insulation should be set. Five. Between the positive and negative power supplies and between the positive power supply that is often energized and the closing or tripping circuit engineering construction standard full text information systemArticle 8 The installation of drawer-type power distribution cabinets shall also meet the following requirements: 1. Drawers should be pushed and pulled flexibly and lightly, without obstruction or collision, and drawers should be interchangeable. 2. The mechanical interlock or electrical interlock device of the drawer should operate correctly and reliably, and the isolating contacts can only be separated after the circuit breaker is opened.
3. The secondary circuit connection plug-in between the drawer and the cabinet should have good contact. 4. The contact between the drawer and the cabinet and the grounding of the cabinet and frame should be good. Article 2.0.9 The installation of the trolley-type cabinet shall also meet the following requirements: 1. Check that the "five-protection" devices to prevent electrical misoperation are complete and flexible and reliable.
2. The trolley should be pushed and pulled flexibly and lightly, without obstruction or collision, and the trolleys of the same model should be interchangeable.
3. After the trolley is pushed into the working position, the gap between the top of the moving contact and the bottom of the static contact should meet the product requirements.
4. The secondary circuit connection plug between the trolley and the cabinet should have good contact. 5. The safety isolation plate should be opened flexibly and move accordingly with the entry and exit of the trolley. 6. The position of the control cable in the cabinet should not hinder the entry and exit of the trolley and should be firm. 7. The grounding contact between the trolley and the cabinet should be in close contact. When the trolley is pushed into the cabinet, its grounding contact should be in contact before the main contact, and when pulled out, the grounding contact should be disconnected after the main contact.
Article 2.0.10 The paint layer of the panel and cabinet should be intact and undamaged. The brackets for fixing electrical appliances should be painted. The panel colors of the panels and cabinets installed in the same room and frequently monitored should be harmonious.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3, Installation of Electrical Appliances on Panels and Cabinets
Article 3.0.1 The installation of electrical appliances shall meet the following requirements: 1. The quality of electrical components is good, the model and specifications shall meet the design requirements, the appearance shall be intact, and the accessories shall be complete, neatly arranged, firmly fixed and well sealed. 2. Each electrical appliance shall be able to be disassembled and replaced separately without affecting the fixation of other electrical appliances and wire bundles.
3. The heating element should be installed in a place with good heat dissipation; the connection between two heating elements should use heat-resistant wires or bare copper wires in porcelain tubes. 4. The fuse specifications and the setting values of the automatic switch shall meet the design requirements. 5. The switching pressure plate shall have good contact, and there shall be sufficient safety distance between adjacent pressure plates. The adjacent pressure plates shall not be touched during switching; for the switching pressure plate with one end energized, the active end shall be non-energized when the pressure plate is disconnected.
Six. The signal lights, light signs, electric bells, electric whistles, emergency electric clocks, etc. of the signal circuit should display accurately and work reliably.
Seven. If the panel is equipped with device equipment or other electrical appliances with grounding requirements, its casing should be reliably grounded.
Eight. Closed panels and cabinets with lighting should ensure that the lighting is intact. Article 3.0.2 The installation of terminal blocks shall meet the following requirements: 1. The terminal blocks should be free of damage, firmly fixed, and well insulated. 2. The terminals should have serial numbers, and the terminal blocks should be easy to replace and convenient to wire; the height from the ground should be greater than 350mm.
Three. For circuit voltages exceeding 400V, the terminal board should have sufficient insulation and be painted with red marks.
Four. Strong and weak current terminals should be arranged separately. When there are difficulties, there should be obvious signs and empty terminals should be separated or partitions with enhanced insulation should be set. Five. Between the positive and negative power supplies and between the positive power supply that is often energized and the closing or tripping circuit engineering construction standard full text information systemArticle 8 The installation of drawer-type power distribution cabinets shall also meet the following requirements: 1. Drawers should be pushed and pulled flexibly and lightly, without obstruction or collision, and drawers should be interchangeable. 2. The mechanical interlock or electrical interlock device of the drawer should operate correctly and reliably, and the isolating contacts can only be separated after the circuit breaker is opened.
3. The secondary circuit connection plug-in between the drawer and the cabinet should have good contact. 4. The contact between the drawer and the cabinet and the grounding of the cabinet and frame should be good. Article 2.0.9 The installation of the trolley-type cabinet shall also meet the following requirements: 1. Check that the "five-protection" devices to prevent electrical misoperation are complete and flexible and reliable.
2. The trolley should be pushed and pulled flexibly and lightly, without obstruction or collision, and the trolleys of the same model should be interchangeable.
3. After the trolley is pushed into the working position, the gap between the top of the moving contact and the bottom of the static contact should meet the product requirements.
4. The secondary circuit connection plug between the trolley and the cabinet should have good contact. 5. The safety isolation plate should be opened flexibly and move accordingly with the entry and exit of the trolley. 6. The position of the control cable in the cabinet should not hinder the entry and exit of the trolley and should be firm. 7. The grounding contact between the trolley and the cabinet should be in close contact. When the trolley is pushed into the cabinet, its grounding contact should be in contact before the main contact, and when pulled out, the grounding contact should be disconnected after the main contact.
Article 2.0.10 The paint layer of the panel and cabinet should be intact and undamaged. The brackets for fixing electrical appliances should be painted. The panel colors of the panels and cabinets installed in the same room and frequently monitored should be harmonious.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3, Installation of Electrical Appliances on Panels and Cabinets
Article 3.0.1 The installation of electrical appliances shall meet the following requirements: 1. The quality of electrical components is good, the model and specifications shall meet the design requirements, the appearance shall be intact, and the accessories shall be complete, neatly arranged, firmly fixed and well sealed. 2. Each electrical appliance shall be able to be disassembled and replaced separately without affecting the fixation of other electrical appliances and wire bundles.
3. The heating element should be installed in a place with good heat dissipation; the connection between two heating elements should use heat-resistant wires or bare copper wires in porcelain tubes. 4. The fuse specifications and the setting values of the automatic switch shall meet the design requirements. 5. The switching pressure plate shall have good contact, and there shall be sufficient safety distance between adjacent pressure plates. The adjacent pressure plates shall not be touched during switching; for the switching pressure plate with one end energized, the active end shall be non-energized when the pressure plate is disconnected.
Six. The signal lights, light signs, electric bells, electric whistles, emergency electric clocks, etc. of the signal circuit should display accurately and work reliably.
Seven. If the panel is equipped with device equipment or other electrical appliances with grounding requirements, its casing should be reliably grounded.
Eight. Closed panels and cabinets with lighting should ensure that the lighting is intact. Article 3.0.2 The installation of terminal blocks shall meet the following requirements: 1. The terminal blocks should be free of damage, firmly fixed, and well insulated. 2. The terminals should have serial numbers, and the terminal blocks should be easy to replace and convenient to wire; the height from the ground should be greater than 350mm.
Three. For circuit voltages exceeding 400V, the terminal board should have sufficient insulation and be painted with red marks.
Four. Strong and weak current terminals should be arranged separately. When there are difficulties, there should be obvious signs and empty terminals should be separated or partitions with enhanced insulation should be set. Five. Between the positive and negative power supplies and between the positive power supply that is often energized and the closing or tripping circuit engineering construction standard full text information system
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