JB/T 12719-2016Test method of accelerated life of daily-use metallic tube electric heating elements (English PDF)
日用管状电热元件加速寿命试验方法
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Issued by
MIIT
Level / Type
Industry · Recommended
Issue date
January 15, 2016
Implementation date
June 1, 2016
Scope
JB/T 12719-2016 is the English-translated version of 日用管状电热元件加速寿命试验方法.
JB/T 12719-2016 is the Chinese standard "Test method of accelerated life of daily-use metallic tube electric heating elements". Its scope clause reads: This standard specifies the test method of accelerated life of daily-use metallic tube electric heating elements (hereinafter referred to as “elements”).
This document is applicable to the accelerated life test of daily-use metallic tube electric heating elements installed in household electrical appliances, with a rated voltage not exceeding 480 V and single-tube rated power not exceeding 6 kW. Its clauses include terms and definitions.
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Document preview — JB/T 12719-2016
National Standard of the People's Republic of China
- ICS
- 29.120.01
Issued by: Ministry of Industry and Information Technology of the People's Republic of China
Contents
- Foreword i
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Test principle
- 4.1 Failure mechanism and failure mode
- 4.2 Failure factors
- 5 Classification and key technical parameters
- 5.1 Classification
- 5.2 Main technical parameters
- 6 Test device and environmental requirements
- 6.1 Test device
- 6.2 Test environment
- 7 Test requirements
- 7.1 General requirements
- 7.2 Elements classified under 5.1.
- 7.3 Elements classified under 5.1.
- 7.4 Elements classified under 5.1.
- 7.5 Elements for other heating purposes
- 7.6 Situations allowing for coverage test
- 8 Test methods and evaluation
- 8.1 General requirements
- 8.2 Dry heating cycle test
- 8.3 Dry heating and fast cooling test
- 8.4 Voltage step-up test
- 8.5 Overload cycle test
- 8.6 Fast on-off cycle overload test
- 8.7 Leakage current measurement at operating temperature
- 8.8 Electric strength test at operating temperature
- Annex A (Informative) Limit operating temperatures of materials commonly used for the elements
- Bibliography
1 Scope
This standard specifies the test method of accelerated life of daily-use metallic tube electric heating elements (hereinafter referred to as “elements”).
This document is applicable to the accelerated life test of daily-use metallic tube electric heating elements installed in household electrical appliances, with a rated voltage not exceeding 480 V and single-tube rated power not exceeding 6 kW.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 4706.1-2005 Household and similar electrical appliances - Safety - Part 1: General requirements
GB 14536.8-2010 Automatic electrical controls for household and similar use - Particular requirements for timers and time switches
JB/T 4088-2012 Daily-use metallic tube electric heating elements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in JB/T 4088-2012 and the following apply.
3.1
daily-use metallic tube electric heating elements elements used for heating, using metallic tube as the case and alloy heating wires as the heater, with the space between them filled with dense magnesium oxide powder or similar insulating material as the insulating medium, and connected to the power supply through a lead-out rod
3.2 failure mechanism
intrinsic causes such as physical and chemical changes that cause failure
3.3 failure mode
manifestation of an observable or measurable failure phenomenon occurring in an element
3.4 failure factor
external causes or conditions leading to failure
3.5 testing stress
input factors that directly act on the elements during the test
3.6 predefined working condition
rated usage conditions and requirements of the elements as specified by the manufacturer […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB 4706.1-2005 — Household and similar electrical appliances - Safety - Part 1: General requirements
JB/T 4088-2012 — Tubular electric heating elements for household use
JB/T 10062-2026 — Probes used in ultrasonic flaw detection - Testing methods for performance
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