CJJ 72-1997 Specification for construction and acceptance of trolleybus power supply network projects
Some standard content:
Engineering Construction Standard Full-text Information System
Industry Standard of the People's Republic of China
Code for Installation and Acceptance of Trolleybus Network
72-—97
Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
Industry Standard of the People's Republic of China
Code for Installation and Acceptance of Trolleybus Network NetworkCJJ
Editing unit: Power Supply Station of Beijing Public Transport Corporation Tram CompanyApproving department: Ministry of Construction of the People's Republic of ChinaEffective date: 1
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Notice on the Release of the Industry Standard "Specifications for Construction and Acceptance of Trolleybus Power Supply Network Engineering"
Construction Standard [1997] No. 230
Construction Committees (Construction Departments) of provinces, autonomous regions, and municipalities directly under the Central Government, Construction Committees of independently planned cities, and relevant departments of the State Council:
In accordance with the requirements of the Ministry of Construction's Construction Standard [1991] No. 413, the "Specifications for Construction and Acceptance of Trolleybus Power Supply Network Engineering" edited by the Power Supply Station of Beijing Public Transport Corporation Tram Company has been reviewed and approved as an industry standard, numbered CJJ72-97, and will be implemented on April 1, 1998.
This standard is managed by the Ministry of Construction's Urban Construction Standards and Technology Management Unit, the Ministry of Construction's Urban Construction Research Institute, and its specific interpretation is the responsibility of the Beijing Tramway Company Power Supply Station. This standard is published by the Ministry of Construction's Standards and Norms Research Institute. Ministry of Construction of the People's Republic of China
September 12, 1997
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Engineering Construction Standards Full Text Information System
General Principles·
3 Construction Preparation
Inspection of Line Network Equipment
5 Pole Foundation and Tensioning
Digging Pole PitwwW.bzxz.Net
Shipping Pole
5.4 Tensioning
Installation of Contact Network Support Structure
General Provisions·
Installation of Horizontal Tension Wire
Installation of Single-arm Beam
Chain Wire Installation·
Installation of Contact Network Suspension Structure
General Provisions·
Suspension Installation··
Erection of Contact Wire
Regrinding Installation of the body
Installation of contact wire and anchor wire·
Installation of hub equipment
General provisions
Installation of splitter·
Installation of combiner·
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8.4 Installation of crossover
8.5 Installation of section insulator
Erection of contact network in maintenance yard, turnaround yard and bridge culvert··28
Contact network in maintenance yard and maintenance workshop
Contact network in turnaround yard..
Contact network in bridge culvert
Overhead feeder
Direction and position of overhead feeder
Feeder support structure Installation
Feeder laying
Feeder lead-through and fixed binding
Feeder box and feeder line installation
Equalizing line installation
Lightning arrester installation
Cable line installation
General provisions
Cable duct laying
Cable bracket installation
Cable laying in tunnels and trenches
Cable laying in pipelines
Cable laying on bridges
Straight cable laying
Cable joints and terminals
Acceptance of power supply network engineering
General provisions
13.2 Acceptance inspection of contact network engineering
13.3 Acceptance inspection of feeder network engineering
13.4 Power transmission and opening test Operation…….
Completion and handover
Appendix A
Explanation of terms used in this specification
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Electricity et electricity
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Additional Notes
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1 General Provisions
1 This specification is formulated to improve the construction technology level of trolleybus power supply line network projects and the enterprise management level, ensure construction quality and safety, save investment and improve economic benefits.
This specification applies to the construction and acceptance of new trolleybus power supply line network projects and overhaul projects of existing lines in urban and suburban areas with a DC system rated voltage of 750V or less.
3 Trolleybus power supply line network projects should be constructed according to the approved design. When changing the design, the change procedures should be handled in accordance with the prescribed procedures. 1.0.4 All ferrous metal parts and assemblies used in power supply line network projects should be galvanized or subjected to other anti-corrosion treatments.
1.0.5 The wire materials, equipment and devices used in power supply line network projects should comply with the provisions of the current relevant national product standards and should have a certificate of conformity. 1.0.6
3 In addition to complying with this specification, the construction and acceptance of trolleybus power supply line network projects should also comply with the provisions of the current relevant national standards. Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
2.0.1 Contact Network
A conductive network that supplies electric energy to the tram through a collector. 2.0.2 Feeder
Wire that transmits electric energy from the tram rectifier station to the contact network. 2.0.3 Feed-in point
The part where feeder clamps are used to transmit electric energy to the contact network. 2.0.4 Voltage-equalizing wire
Wire that connects wires of the same polarity on the contact network to make the voltage in its section equal.
5 Chain wire
The rope that suspends the contact network longitudinally.
2.0.6 Horizontal tension wire
The rope that suspends the chain wire or contact network horizontally. 2.0.7Y-type horizontal tension wire
The horizontal tension wire that suspends the chain wire or contact network through a force dividing circle. 2.0.8 Soft stop wire
The rope that suspends the contact network without support on one side of the horizontal tension wire. 2.0.9
Oblique pendulum suspension
Use parallelogram oblique pendulum suspension to suspend the contact wire in a zigzag suspension form.
Chain wire suspension
The contact wire is suspended on the chain wire through the string hanger. 2.0.11 Line position
The projected position of the chain wire, horizontal tension wire and contact wire on the road plane. 2.0.12 Compound grinding body
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A special-shaped conductor that contacts the collector under the contact wire and transmits electric energy. 2.0.13 Anchor wire
A pull wire used to anchor the contact network and balance the tension of the contact network. 2.0.14 Sag
Feeder, chain line, contact line sag due to deadweight and additional loads, the distance between the lowest point of sag and the line connecting its two suspension points in the vertical direction. 2.0.15 Spacing
The distance between the centers of two adjacent poles.
Equivalent section
The anchoring length of the selected contact line.
2.0.17 Bat iron
The component that suspends the contact line at the bending angle of the contact line in a curve. 2.0.18 Loop chain line
The half-chain line that continues the chain line beyond the starting and terminal anchor lines, and is made of looped connecting lines.
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3 Construction Preparation
1 Before construction, the construction organization design and technical measures should be formulated according to the design requirements. 3.0.1
2 Construction surveys should be conducted, and the survey items should include the following: 3.0.2.1
1 Transportation, loading and unloading, storage conditions of construction equipment and road conditions during construction;
Conditions of bridges, tunnels, railways and related facilities along the power line network; 3.0.2.2
3 Coordination conditions and cooperation requirements for the construction of power line network projects and municipal facilities such as underground pipe networks;
3.0.2.4 Whether civil engineering projects or preliminary projects meet the requirements of line network construction. 3.0.3 Technical preparations for construction should include the following: 3.0.3.1 Various installation drawings of power line networks and related construction technical data; 3.0.3.2
Construction safety measures and construction organization plan. 3.0.4 According to the construction progress and the engineering budget of the design documents, a power supply network equipment supply plan should be prepared.
3.0.5 Construction machinery and equipment should include the following: 3.0.5.1 Measuring instruments, meters and measuring tools; general and special machinery, tools and equipment for power supply network projects. 3.0.5.2
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4 Network Equipment Inspection
4.0.1 The equipment used in the trolleybus power supply network project should meet the requirements of the current product standards and have a certificate of conformity.
4.0.2 The use of new materials, new processes and new products should be inspected according to the current technical standards: products that do not meet the standards after inspection are strictly prohibited from being used. 4.0.3 The equipment and devices used in the trolleybus power supply network project shall be re-inspected if any of the following conditions are met:
4.0.3.1 Exceeding the prescribed storage period;
Deterioration and damage due to improper storage or transportation; 4.0.3.3 Doubts about the original inspection results. 4.0.4 Ordinary reinforced concrete poles shall have a certificate of conformity. An appearance inspection shall be carried out before construction and shall comply with the following provisions:
1 The surface shall be smooth and flat, with uniform wall thickness, and there shall be no unloading caused by exposed reinforcement and leakage of mortar.
The top concrete shall be tightly sealed;
4.0.4.3 There shall be no longitudinal cracks on the outer surface; the width of the circumferential crack shall not be greater than 0.2mm, and its length shall not be greater than 1/3 of the circumference. 4.0.5 Metal welded poles shall have a certificate of conformity. Before construction, an appearance inspection should be carried out and the following provisions should be met:
4.0.5.1 The weld should be smoothly connected and should not have defects such as slag inclusion, leaking welding, arc pits, pores, cracks, etc. The undercut depth should not be greater than 0.5mm. 4.0.5.2 Anti-corrosion treatment should be carried out, and the coating or anti-corrosion paint on the entire surface should be uniform, without defects such as rust spots, bubbles, paint peeling, etc. 4.0.6 The surface of precast concrete components should not have defects such as honeycombs, exposed reinforcement, cracks, etc., and its strength should meet the design requirements.
4.0.7 The appearance of the wire should be inspected before construction and should comply with the following regulations: Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
4.0.7.1 There should be no defects such as loose strands, crossings, folds, breaks and damage; 4.0.7.2
The bare aluminum stranded wire should not be corroded;
4.0.7.3 The zinc coating on the surface of galvanized steel stranded wire and galvanized iron wire should be uniform and free of spots and rust.
4.0.8 Hardware and accessories should be visually inspected before construction and should comply with the following provisions: 4.0.8.1 Models, specifications and structural dimensions should comply with design requirements; 4.0.8.2 The surface should be smooth and free of defects such as cracks, burrs, flash, sand holes and bubbles.
The contact groove surfaces of the main body, auxiliary clamp and pressure plate of the contact clamp and the conductor hook clamp should be smooth and flat;
4.0.8.4 The transition interface between copper and aluminum should not have defects such as pores, slag inclusions and cracks; 4.0.8.5 The surfaces of fastening fittings such as threaded joints and bolts should not have damage, cracks, zinc peeling and rust spots. 4.0.9 Before construction, insulators and insulating parts shall be inspected for appearance and shall comply with the following provisions:
The porcelain parts and iron parts shall be tightly combined, and the cast cement parts shall not be loose or have radiating cracks;
The porcelain glaze of porcelain parts shall be smooth, without defects such as cracks, glaze defects, spots, burn marks and bubbles;
The surface of non-porcelain insulating parts shall be smooth, without defects and cracks; the processed 4.0.9.3
surface shall be dipped and brushed with insulating paint.
4.0.10 Before construction, the appearance of re-grinding body special-shaped parts shall be inspected for appearance and shall comply with the following provisions:
4.0.10.1The structural dimensions and the position of the connection holes shall comply with the design requirements; 4.0.10.2The vertical surface of the profile shall not be twisted, grooved or hard bent. 4.0.11 The main body of the splitter should be assembled, debugged and inspected before construction, and should comply with the following regulations:
4.0.11.1 After the main body is assembled, the connectors of each part should not be loose, the guide tongue should be fixed stably, the split position should be flexible, the fixed position slideway and the split position slideway should not be misaligned, and the allowable deviation of the connection gap is +2mm; Engineering Construction Standard Full Text Information System
kAoNTKAca-1 After the main body is assembled, the connectors of each part should not be loose, the guide tongue should be fixed stably, the split position should be flexible, the fixed position slideway and the split position slideway should not be misaligned, and the allowable deviation of the connection gap is +2mm; Engineering Construction Standard Full Text Information System
kAoNTKAca-1 After the main body is assembled, the connectors of each part should not be loose, the guide tongue should be fixed stably, the split position should be flexible, the fixed position slideway and the split position slideway should not be misaligned, and the allowable deviation of the connection gap is +2mm; Engineering Construction Standard Full Text Information System
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