Standards

DL/T 696-2024 Active

DL/T 696-2024 Soft busbar fittings

This document specifies the classification and types, technical requirements, test methods, judgment criteria, marking, packaging, transportation, and storage of soft busbar fittings. This document is applicable to fittings used for fixing and separating soft busbars in substations, converter stations, and power plants.

Publish Date: 2024-12-25

DL/T 683-2024 Active

DL/T 683-2024 DL/T 683-2024 Electricity Fittings Model Naming Methodology

This document specifies the general requirements, marking components, and detailed rules for naming power fittings models. This document is applicable to power fittings used in overhead power lines with a rated voltage of 35kV and above, as well as in substations and power plants. For power fittings used in other voltage ranges, the naming methods specified in this document can be used as a reference.

Publish Date: 2024-12-25

DL/T 626-2024 Active

DL/T 626-2024 DL/T 626-2024 Detection Regulations for Degraded Suspended Insulators

This document specifies the classification, detection methods, detection requirements, and technical data for the detection of deteriorated suspension insulators. This document is applicable to disc-shaped suspension insulators made of porcelain or glass used in AC 1000V and DC ±1500V and higher systems, as well as composite insulators used in overhead power lines (hereinafter referred to as insulators).

Publish Date: 2024-12-25

DL/T 567.6-2024 Active

DL/T 567.6-2024

This document specifies the method outline, instrumentation, testing steps, method precision, and result calculation for the combustion loss method and carbon content determination method (high temperature combustion-infrared spectroscopy) used to determine the combustible matter in fly ash and slag discharged from coal-fired boilers. The combustion loss method is suitable for the supervision of coal-fired boiler operation, and Method A of the combustion loss method and the carbon content determination method (high temperature combustion-infrared spectroscopy) are suitable for the determination of combustible matter in fly ash and slag during performance tests of boiler units.

Publish Date: 2024-12-25

DL/T 540-2024 Active

DL/T 540-2024 Gas relay inspection regulations

This document specifies the inspection conditions, inspection methods, and inspection requirements for gas relays used in transformers. This document is applicable to the inspection of gas relays used in transformers (hereinafter referred to as relays). The inspection of gas relays installed on other oil-filled electrical equipment can be carried out in accordance with this document.

Publish Date: 2024-12-25

DL/T 487-2024 Active

DL/T 487-2024

This document specifies the basic requirements, measurement methods, criteria for evaluating measurement results, and processing of measurement data for the distribution voltage measurement of insulator strings on 330 kV and above AC overhead power lines. This document is applicable to disc-shaped suspension porcelain or glass insulator strings (hereinafter referred to as insulator strings) used on 330 kV and above AC overhead transmission lines.

Publish Date: 2024-12-25

DL/T 437-2024 Active

DL/T 437-2024 High-voltage direct current grounding electrode technology guidelines

This document specifies the requirements for the design, testing, operation and maintenance of high-voltage DC grounding electrodes, as well as the assessment and protection against the impact on surrounding facilities. This document is applicable to grounding electrodes used in high-voltage DC transmission systems.

Publish Date: 2024-12-25

DL/T 368-2024 Active

DL/T 368-2024 The high-altitude correction of the external insulation of insulators used in power transmission lines for pollution

This document specifies the altitude correction requirements for the uniform creepage distance of insulators used in transmission lines. This document is applicable to transmission lines in areas with an altitude of 1000m to 5500m, and for insulators used in AC 1000V and DC ±1500V and higher systems. The altitude correction method for the uniform creepage distance of insulators and bushings used in substations under high-altitude pollution conditions can be referred to this document for implementation.

Publish Date: 2024-12-25

DL/T 324-2024 Active

DL/T 324-2024

This document specifies the data transmission format and universal instruction set used by the dam safety monitoring automation system. This document is applicable to the data communication of dam safety monitoring automation system equipment that uses EIA-485/422, Ethernet (TCP/IP), or other communication interfaces that comply with international standards, and is networked in a master-slave response mode.

Publish Date: 2024-12-25

DL/T 313-2024 Active

DL/T 313-2024 1000kV Power Transformer Field Inspection Specification

This document specifies the general requirements for on-site inspection of 1000kV power transformers, testing equipment, accuracy testing of voltage transformers, accuracy testing of current transformers, and the processing of inspection results. This document is applicable to on-site inspection of the measurement accuracy of 1000kV power transformers.

Publish Date: 2024-12-25

DL/T 312-2024 Active

DL/T 312-2024 Recommendations for inspection and maintenance of 1000kV capacitive voltage transformer equipment

This document specifies the general requirements, preparation for maintenance, maintenance requirements, acceptance requirements, and commissioning monitoring for the maintenance of 1000kV capacitive voltage transformers. This document is applicable to the on-site maintenance of 1000kV capacitive voltage transformers.

Publish Date: 2024-12-25

DL/T 311-2024 Active

DL/T 311-2024 Guidelines for maintenance of 1100kV gas-insulated metal-enclosed switchgear

This document specifies the general requirements, preparation for maintenance, maintenance requirements, acceptance requirements, and commissioning tests for 1100kV gas-insulated metal-enclosed switchgear (hereinafter referred to as GIS). This document is applicable to AC GIS with a rated voltage of 1100kV (including HGIS).

Publish Date: 2024-12-25