GB/T 2681-1981
Abolished
NB/T 11728-2024
Active
Industry standards-Energy
NB/T 11728-2024 NB/T 11728-2024: Highland environment: Leakage-discharge distance configuration for insulated corrosion in 27.5kV system
NB/T 11728-2024 NB/T 11728-2024: Highland environment: Leakage-discharge distance configuration for insulated corrosion in 27.5kV system
Price:
$ 20.00
Basic Information
Standard Code:
NB/T 11728-2024
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Basic standards and general methods
ICS Name:
Comprehensive Electrical Engineering
Publish Date:
2024-12-25
Implement Date:
2025-06-25
Scope
This document specifies the technical requirements for the configuration of insulation creepage distances under contamination conditions in 27.5 kV AC systems in plateau environments, as well as altitude correction and configuration methods. This document is applicable to the configuration of insulation creepage distances for porcelain insulators (strings) and polymer insulators in 27.5 kV systems in areas with altitudes ranging from 1,000 m to 5,500 m. The configuration of insulation creepage distances for 35 kV systems should be implemented in accordance with this document.
Development Information
Related Standards
GB/T 2682-1981
Abolished
GB/T 2682-1981 Colors of indicator lights and push-buttons used in electrical assembly devices
GB/T 3926-1983
Replaced
GB/T 3926-1983 Rated voltage for medium frequency equipment
GB/T 4064-1983
Abolished
GB/T 4064-1983 General guide for designing of electrical equipment to satisfy safety requirements
GB/T 4776-1984
Replaced
GB/T 4776-1984 Electrical safety terminology
GB/T 5080.4-1985
Active