Standards

DL/T 2439.2-2024 Active

DL/T 2439.2-2024 Guidelines for the use of rated voltage above 1000V station-mounted insulators Part 2: Composite insulators for poles

This document specifies the conditions of use, selection requirements, acceptance, storage and transportation, installation, and operation and maintenance for pillar composite insulators used in substations with a nominal voltage of more than 1000V. This document applies to pillar composite insulators used in AC 1000V, DC ± 1500V, and higher AC/DC systems for electrical devices or equipment. This document applies to pillar composite insulators composed of a solid cylindrical insulating core made of resin-impregnated fiber, high-temperature silicone rubber sheaths, and end fittings, hereinafter referred to as insulators. This document does not apply to hollow pillar composite insulators.

Publish Date: 2024-12-25

DL/T 1867-2024 Active

DL/T 1867-2024 Electricity Demand Response Information Exchange Specification

This document specifies the general principles and requirements for the exchange of power demand response information, the information model, information exchange services, and information exchange mechanisms. This document is applicable to the design, development, and upgrading of power demand response systems. It can also provide technical guidance for load management support systems, virtual power plant support systems, and other related systems.

Publish Date: 2024-12-25

DL/T 1789-2024 Active

DL/T 1789-2024 Optical Fiber Current Transformer Technical Specification

This document specifies the technical requirements, test methods, inspection rules, marking, labels, and accompanying documents, as well as packaging, transportation, and storage requirements for fiber optic current transformers. This document is applicable to the production, use, and inspection of fiber optic current transformers used in power systems.

Publish Date: 2024-12-25

DL/T 1759-2024 Active

DL/T 1759-2024 Electricity load aggregation service provider demand response system technical specification

This document specifies the working environment requirements, system design requirements, system functional requirements, main performance indicators of the demand response system for power load aggregation service providers, and the evaluation of their certification and aggregation response capabilities. This document is applicable to the design, development, construction, operation, and maintenance of the demand response system for power load aggregation service providers.

Publish Date: 2024-12-25

DL/T 1726-2024 Active

DL/T 1726-2024 DL/T 1726-2024 Ultra-high voltage DC through-wall insulator technical specification

This document specifies the usage conditions, general requirements, testing, type testing, individual testing, acceptance testing, packaging, transportation, and storage requirements for ultra-high voltage DC wall-penetrating bushings. This document applies to wall-penetrating bushings used in ±800kV and ±1100kV ultra-high voltage DC transmission projects, including pole bus wall-penetrating bushings, neutral bus wall-penetrating bushings (when each pole has two valves and a bypass switch), and center-point bus wall-penetrating bushings. Oil-immersed smoothing reactors bushings used in conventional high-voltage DC transmission projects, wall-penetrating bushings used in flexible DC transmission projects, and wall-penetrating bushings used in conventional high-voltage DC transmission projects below ±800kV can be referenced for reference.

Publish Date: 2024-12-25

DL/T 1694.11-2024 Active

DL/T 1694.11-2024 High-voltage testing instrument and equipment calibration specification Part 11: Capacitance current tester

This document specifies the metrological characteristics, calibration conditions, calibration items, calibration methods, calibration results, and recalibration time requirements for capacitor current testers (hereinafter referred to as testers). This document is applicable to the calibration of testers used for the injection method of non-50 Hz signals in 6 kV to 66 kV AC distribution network systems.

Publish Date: 2024-12-25

DL/T 1694.10-2024 Active

DL/T 1694.10-2024 High-pressure testing instrument and equipment calibration specification Part 10: Calibration of SF6 density controller calibrator

This document specifies the metrological characteristics, calibration conditions, calibration items, calibration methods, expression of calibration results, and re-calibration time intervals of the sulfur hexafluoride density controller calibrator (hereinafter referred to as the "calibrator"). This document is applicable to the calibration of the calibrator.

Publish Date: 2024-12-25

DL/T 1692-2024 Active

DL/T 1692-2024 DL/T 1692-2024 Safety tooling cabinet technical specifications

This document specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, and storage of safety tool cabinets. This document is applicable to safety tool cabinets in the fields of power generation, transmission, substation, distribution, and electricity consumption.

Publish Date: 2024-12-25

DL/T 1679-2024 Active

DL/T 1679-2024 The technical specifications for sintered petroleum coke used in high-voltage direct current grounding electrodes

This document specifies the technical requirements, test methods, inspection requirements, marking and accompanying documents, packaging, transportation, and storage requirements for calcined petroleum coke used in high-voltage direct current grounding electrodes. This document is applicable to the production, inspection, and acceptance of calcined petroleum coke used in high-voltage direct current grounding electrodes.

Publish Date: 2024-12-25

DL/T 1673-2024 Active

DL/T 1673-2024 DL/T 1673-2024 Switching Transformer Valve Side Gland Technical Specification

This document specifies the technical requirements for the valve side bushings of converter transformers in terms of their use conditions, testing, packaging, transportation, and storage. This document applies to valve side bushings of oil-immersed converter transformers used in conventional high-voltage direct current (HVDC) transmission projects with voltages of ±1100 kV and below. Valve side bushings of oil-immersed smoothing reactors used in conventional HVDC transmission projects, valve side bushings of transformers used in flexible HVDC transmission projects, and wall-through bushings connecting transformers to valve halls in flexible HVDC transmission projects can be referenced for reference.

Publish Date: 2024-12-25

DL/T 1579-2024 Active

DL/T 1579-2024 Technical specification for terminal assembly components used in composite insulators for overhead lines

This document specifies the classification and naming, dimensional characteristics, technical requirements, inspection rules, marking, and packaging of end fittings for composite insulators used in overhead lines. This document is applicable to end fittings for composite insulators used in AC 1000V, DC ± 1500V, and higher voltage systems.

Publish Date: 2024-12-25

DL/T 1560-2024 Active

DL/T 1560-2024 Guidelines for on-site assembly and testing of power transformers during dismantlement transportation

This document specifies the requirements for the design of disassembling and transporting power transformers, on-site assembly, disassembly and transportation, on-site assembly and acceptance, and on-site installation. This document is applicable to power transformers with a voltage rating of 1000 kV and below, which are disassembled and transported after completing factory tests, and then assembled on-site.

Publish Date: 2024-12-25