GB/T 20841-2007
Heating cables with a rated voltage of 300/500 V for comfort heating and prevention of ice formation (English Version)

Standard No.

GB/T 20841-2007

Language

Chinese, Available in English version

Release Date

2007

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 20841-2007

Scope

This standard applies to heating cables used at low temperatures, such as heating of living facilities and protection against freezing. This standard applies to cables with a rated voltage of 300/500V. Heating cables for industrial use will be specified in a separate standard. This standard applies only to cables and not to any other components of the heating system. This standard specifies the construction of cables using single or multiple conductors. It also recommends approved combinations of insulation and sheath materials. Bare conductors and protected conductors with a supply voltage equal to or less than 50V are not included in the scope of this standard.

GB/T 20841-2007 Referenced Document

• GB/T 13033.1-2007 Mineral insulated cables and their terminations with a rated voltage not exceeding 750 V Part 1: Cables
• GB/T 20637 Electrical installations in ships Shipboard power cables General construction and test requirements
• GB/T 2900.10 Electrotechnical terminology.Electric cables*， 2013-12-17 Update
• GB/T 2951.1-1997 Common test methods for insulating and sheathing materials of electric cables. Part 1: Methods for general application. Section one: Measurement of thickness and overall dimensions--Tests for determining the mechanical properties
• GB/T 2951.2-1997 Common test methods for insulating and sheating materials of electric cables. Part 1: Methods for general application. Section two: Thermal ageing methods
• GB/T 2951.3-1997 Common test methods for insulating and sheathing materials of electric cables. Part 1: Methods for general application. Section three: Methods for determining the density--Water absorption tests--Shrinkage test
• GB/T 2951.4-1997 Common test methods for insulating and sheating material of electric cables. Part 1: Methods for general application. Section four: Test at low temperature
• GB/T 2951.5-1997 Common test methods for insulating and sheathing materials of electric cables. Part 2: Methods specific to elastomeric compounds. Section one: Ozone resistance test--Hot set test--Mineral oil immersion test
• GB/T 2951.6-1997 Common test methods for insulating and sheathing materials of electric cables. Part 3: Methods specific to PVC compounds. Section one: Pressure test at high temperature--Test for resistance to cracking
• GB/T 2951.7-1997 Common test methods for insulating and sheathing materials of electric cables. Part 3: Methods specific to PVC compounds. Section two: Loss of mass test--Thermal stability test
• GB/T 3956 Conductors of insulated cables*， 2008-12-30 Update
• IEC 60885-1:1987 Electrical test methods for electric cables. Part 1 : Electrical tests for cables, cords and wires for voltages up to and including 450/750 V

GB/T 20841-2007 history

• 2007 GB/T 20841-2007 Heating cables with a rated voltage of 300/500 V for comfort heating and prevention of ice formation