Standards

DL/T 307-2024 Active

DL/T 307-2024 Operating regulations for 1000kV AC overhead transmission line

This document stipulates the general requirements for the operation of 1000kV AC overhead transmission lines, component requirements, operational requirements, special section requirements, maintenance requirements for the line protection zone, environmental protection, and technical documentation. This document is applicable to the operation and maintenance of 1000kV AC overhead transmission lines.

Publish Date: 2024-12-25

DL/T 304-2024 Active

DL/T 304-2024 Gas Insulated Metal Enclosed Transmission Line Field Handover Test Guidelines

This document specifies the test items, technical requirements, and judgment criteria for the on-site acceptance and commissioning of gas-insulated metal-enclosed transmission lines (GILs). This document applies to on-site acceptance and commissioning tests before the commissioning of new and expanded AC GILs with a rated voltage of 72.5 kV and above and a frequency of 50 Hz, installed in various laying modes. The disassembly and overhaul of GILs can be implemented with reference to this document. Other frequencies and DC GILs can be implemented with reference to this document. The relevant requirements for 1100 kV GILs are included in DL/T 5846.

Publish Date: 2024-12-25

DL/T 288-2024 Active

DL/T 288-2024 Helicopter patrol technical guidelines for overhead power transmission lines

This document stipulates the technical principles and requirements for helicopter inspections of overhead transmission lines, including general requirements, preparation before inspection, inspection methods, inspection approaches, inspection requirements, safety requirements, and the organization and transfer of inspection data. This standard applies to helicopter inspections of AC and DC overhead transmission lines with voltages of 110 (66) kV and above. Helicopter inspections of overhead power lines with voltages of 35 kV and below can be implemented with reference to this standard.

Publish Date: 2024-12-25

DL/T 274-2024 Active

DL/T 274-2024 "Technical specification for handover test of equipment used in ±800kV high voltage direct current transmission"

This document specifies the acceptance test requirements for equipment such as converter transformers, thyristor converter valves, primary equipment of DC substations, AC filters, DC lines, and grounding electrodes in ±800kV high-voltage direct current (HVDC) transmission projects. This document is applicable to ±800kV HVDC transmission projects. Other voltage-level HVDC transmission projects may refer to and implement it as appropriate.

Publish Date: 2024-12-25

DL/T 5890-2024 Active

DL/T 5890-2024 DL/T 5890-2024 Electrical installation engineering Code for the installation and acceptance of rotating motors

1.0.1 In order to standardize and unify the construction and acceptance standards of rotating motors, ensure the construction quality, and promote the improvement of construction technology, this specification is formulated. 1.0.2 This specification applies to the construction and acceptance of electric motors in rotating motors, and turbine generators, gas generators, and phase adjusters with a capacity of 6,000 kW or more. 1.0.3 The installation and trial run of the mechanical parts of rotating motors shall comply with the provisions of the relevant national standards currently in force. 1.0.4 In addition to complying with the provisions of this specification, the construction and acceptance of rotating motors shall also comply with the provisions of the relevant national standards currently in force.

Publish Date: 2024-09-24

DL/T 5889-2024 Active

DL/T 5889-2024 DL/T 5889-2024 Safety Technical Specification for Electrical Work in Water and Hydropower Construction

1.0.1 This standard is formulated to regulate the supply and use of electricity at the construction sites of hydropower and water conservancy projects and ensure safety. 1.0.2 This standard applies to the supply and use of electricity at the construction sites of hydropower and water conservancy projects with voltages of 10kV or lower. 1.0.3 For the supply and use of electricity at the construction sites of hydropower and water conservancy projects, it is recommended to adopt new technologies, new processes, new materials, and new equipment that have been verified through testing. 1.0.4 For the supply and use of electricity at the construction sites of hydropower and water conservancy projects, in addition to complying with the provisions of this standard, they shall also comply with the provisions of the relevant national standards currently in force.

Publish Date: 2024-09-24

DL/T 5888-2024 Active

DL/T 5888-2024 DL/T 5888-2024 Hydraulic Deep-Mixing Grinding Wall Construction Technical Specification for Hydraulic Power and Water Conservancy Engineering

1.0.1 This standard is formulated to regulate the construction of deep-stirred and milled cement-soil impermeable walls in hydropower and water conservancy projects and ensure the quality of the projects. 1.0.2 This standard is applicable to hydropower and water conservancy projects. 1.0.3 Before the construction of deep-stirred and milled cement-soil impermeable walls, a construction plan shall be formulated based on comprehensive factors such as the engineering geology and hydrogeology, the characteristics of the project, the performance of the materials, and the construction conditions. 1.0.3 In addition to complying with this standard, the construction of deep-stirred and milled cement-soil impermeable walls shall also comply with the provisions of the relevant national standards currently in force.

Publish Date: 2024-09-24

DL/T 5887-2024 Active

DL/T 5887-2024 DL/T 5887-2024 Code for construction technology of cable machine in water conservancy and hydropower engineering

1.0.1 This standard is formulated to regulate the installation and operation management of cable cranes in hydropower and water conservancy projects. 1.0.2 This standard applies to fixed-type, radial-type, translational-type, and swing-tower-type cable cranes. 1.0.3 Cable crane construction special operators shall hold certificates to perform their duties. 1.0.4 The installation and operation of cable cranes shall comply with this standard and the provisions of relevant national and industry standards.

Publish Date: 2024-09-24

DL/T 5886-2024 Active

DL/T 5886-2024 DL/T 5886-2024 Standard for Testing of Geosynthetics in Hydropower and Water Resources Engineering

1.0.1 This specification is formulated to standardize the test methods and technical requirements for geosynthetic materials in hydropower and water conservancy projects. 1.0.2 This specification is applicable to the testing of geosynthetic materials in hydropower and water conservancy projects. 1.0.3 In addition to complying with this specification, the testing of geosynthetic materials in hydropower and water conservancy projects shall also comply with the provisions of the relevant national standards currently in force.

Publish Date: 2024-09-24

DL/T 5885-2024 Active

DL/T 5885-2024 DL/T 5885-2024 Specification for Concrete lining construction of underground engineering steel formwork trolley

1.0.1 In order to standardize the concrete lining construction of steel formwork carriages in hydropower and water conservancy underground projects and ensure quality and safety, these regulations are formulated. 1.0.2 These regulations are applicable to the concrete lining construction of flat-ditch in hydropower and water conservancy underground projects. 1.0.3 For the concrete lining construction of steel formwork carriages in underground projects, in addition to complying with these regulations, they shall also comply with the provisions of the relevant national standards currently in force.

Publish Date: 2024-09-24

DL/T 5884-2024 Active

DL/T 5884-2024 DL/T 5884-2024 Catenary Hoist Installation and Acceptance Specification

1.0.1 These regulations are formulated to standardize the installation and acceptance of cable cranes. 1.0.2 These regulations apply to the installation and acceptance of cable cranes in hydropower and water conservancy projects. 1.0.3 For the installation and acceptance of cable cranes, in addition to complying with these regulations, they shall also meet the requirements of relevant national standards.

Publish Date: 2024-09-24

DL/T 5883-2024 Active

DL/T 5883-2024 DL/T 5883-2024 Hydraulic and Water Conservancy Construction Machinery Safety Operating Regulations for Open-cut Full-face Tunneling Machine

1.0.1 In order to standardize the safe operation of open full-face tunnel boring machines and their supporting equipment and facilities in hydropower and water conservancy projects, prevent various accidents, and ensure the safety of personnel and equipment, these regulations are formulated. 1.0.2 These regulations apply to all types of tunnel projects in hydropower and water conservancy projects that use open full-face tunnel boring machines for construction. 1.0.3 The environmental conditions for the use of the boring machines and their supporting equipment and facilities shall meet the requirements of the equipment's technical documents. 1.0.4 In addition to complying with these regulations, the safe operation of the boring machines and their supporting equipment and facilities shall also comply with the provisions of the relevant national standards currently in force.

Publish Date: 2024-09-24