Standards

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 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 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 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 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 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 763-2024 Active

DL/T 763-2024 Technical Specification for Pre-wound type Fittings for Aerial Line Infrastructure

This document specifies the models and structural types, technical requirements, test methods, judgment criteria, marking, packaging, transportation, and storage of pre-tensioned fittings for overhead lines. This document is applicable to suspension clamps, tension clamps, connection fittings, and protective fittings installed on overhead lines by the pre-tensioning method.

Publish Date: 2024-12-25

DL/T 826-2024 Active

DL/T 826-2024 AC Power Tester for Field Testing

This document specifies the classification, technical requirements, test methods, inspection rules, packaging, and storage requirements for AC power field testers. This document is applicable to the design, manufacture, and acceptance of AC power field testers.

Publish Date: 2024-12-25

DL/T 840-2024 Active

DL/T 840-2024 High-voltage parallel capacitors using technical specifications

This document specifies the operating conditions, technical requirements, test methods, inspection rules, marking and packaging of high-voltage parallel capacitors. This document is applicable to capacitors connected in parallel to AC power systems with a rated frequency of 50Hz and a nominal voltage of more than 1kV, used to improve power factor. This document is not applicable to the following capacitors: --- - Self-healing type capacitors; - Combined capacitors; - Series capacitors for power systems; - Capacitors used in induction heating devices; - Capacitors used under AC voltage superimposed with DC voltage.

Publish Date: 2024-12-25

DL/T 849.4-2024 Active

DL/T 849.4-2024 Electric power equipment dedicated testing instrument general technical specification Part 4: Ultra-low frequency high voltage generator

This document specifies the technical requirements, test methods, inspection rules, and requirements for marking, labels, accompanying documents, packaging, transportation, and storage of ultra-low frequency high-voltage generators. This document is applicable to the production and inspection of ultra-low frequency high-voltage generators.

Publish Date: 2024-12-25

DL/T 887-2024 Active

DL/T 887-2024 The method for measuring the grounding resistance of tower workers' frequency grounding

This document specifies the general requirements for the measurement of tower AC grounding resistance, as well as the requirements for three-pole method testing and loop impedance method testing. This document is applicable to the measurement of AC grounding resistance of towers.

Publish Date: 2024-12-25

DL/T 1001-2024 Active

DL/T 1001-2024 Composite Insulated High Voltage Through Wall Bushing Technical Specification

This document is applicable to the measurement of the working frequency grounding resistance of towers.

Publish Date: 2024-12-25