GB/T 19835-2015 in English
VALIDSelf-regulating trace heating tape
- Issued on:2015-12-31
- Implemented on:2016-07-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$175.00
《GB/T 19835-2015自限温电伴热带》由TC121（全国工业电热设备标准化技术委员会）归口，主管部门为中国电器工业协会。
本标准规定了自限温电伴热带的术语和定义、产品分类、技术要求、试验方法、检验规则、标志、包装、运输和贮存等。
本标准适用于供石油、化工、电力、机械、建筑等领域的管道、阀门、泵体、槽池、储油罐等伴热用交直流两用的自限温电伴热带。
Introduction
In-depth interpretation of the national standard for self-limiting temperature heating cables GB/T19835-2015
| Standard dimensions | Technical requirements | Test methods |
|---|---|---|
| Product classification | According to the flame retardant and anti-corrosion properties, it can be divided into non-flame retardant, flame retardant, anti-corrosion non-flame retardant and anti-corrosion flame retardant; according to the temperature level, it can be divided into low temperature, medium temperature and high temperature. | Table 2 lists the specific requirements for different temperature groups, including the maximum maintenance temperature, the maximum surface temperature and the maximum withstand temperature. |
| Technical parameters | The nominal power range is 3W/m to 65W/m, and the rated voltage includes 12V, 24V, 36V, 110V, 220V, 380V, etc. | The test methods include insulation resistance test, insulation dielectric strength test and maximum maintenance temperature determination (Table 3). |
Explanation of professional terms and practical applications
Resistivity temperature coefficient (PTC): The relationship between the resistivity of a material and the temperature. The positive temperature coefficient means that the resistivity increases with the increase of temperature.
For example, in the heating of oil pipelines, the PTC characteristics of the self-limiting temperature heating tape can ensure that a constant operating temperature is maintained under different ambient temperatures to avoid overheating or insufficient power.
Analysis of Standard Formulation Background and Technological Evolution
GB/T19835-2015 replaces the old version GB/T19835-2005. The main updates include:
- New terms and definitions (such as insulation layer, metal sheath/shielding net, etc.)
- Adjust product classification and clarify flame retardant and anti-corrosion properties
- Supplement test methods, such as the introduction of DC test methods
Implementation Suggestions
Key points for selection:
- Select appropriate temperature grade and power specification according to the use environment
- Consider explosion-proof and anti-corrosion requirements, and select corresponding models (such as flame retardant or anti-corrosion type)
- Ensure that the rated voltage matches the power supply system
Installation and maintenance:
- Use a dedicated junction box for connection to avoid direct welding
- Regularly check the integrity of the insulation layer and outer sheath
- Follow the safety requirements in the product manual and ensure that the grounding resistance does not exceed 4Ω
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