GB/T 17557-1998 Insulation materials for marine power cables

This standard specifies the test requirements for electrical properties, mechanical properties and special properties of marine power cable insulation materials. GB/T 17557-1998 Marine power cable insulation materials GB/T17557-1998 Standard download decompression password: www.bzxz.net

ECS 47.020.05 National Standard of the People's Republic of China GB/T 17557 -- 1998 IEC92-351:1983 Ensulating materials for shipboard power cables Issued on November 9, 1998 Implementation on June 1, 1999 Issued by the State Administration of Quality and Technical Supervision GB/T17557—T998 This standard is formulated based on Part 351 of the International Standard for Electrical Equipment (1953 edition) published by the International Electrical Association No. 92 and the Notice of Revision No. 1 (1992 edition), and is equivalent to the international standard in terms of content. When converting the international standard IEC92251 into the national standard, the reference list is added, and the second chapter of TEC52.351 is changed to the third chapter. The article number is changed accordingly, but the content remains unchanged. This standard is implemented from June 1, 1990, and from December 1, 1999, all marine power cables are required to meet the requirements of the standard.
This standard is issued by China National Aviation Industry Corporation, and this standard is under the jurisdiction of the Seventh Research Institute of China Light Industry Corporation. The drafting units of this standard are: the Seventh Research Institute of China New Industry Corporation, the Seventh Research Institute of China New Industry Corporation, the Cable Research Institute of the Ministry of Machinery Industry, the 11th Research Institute of China Shipbuilding Industry Corporation, and the Ship Cable Institute of China Shipbuilding Industry Corporation. The main contributors of this standard are Xia Yuanlai, Liu Yuexing, Zhao Zhengping and Zhou Eyuan. GR/T175571998
IEC Foreword
The formal resolutions of the International Electrotechnical Commission on technical issues are formulated by technical meetings representing all national committees with special interests. This agreement expresses international consensus on the issues involved as much as possible. These resolutions and agreements are provided for international use in the form of recommended standards and are accepted by national committees in this sense. In order to promote international unification, IEC hopes that national committees will adopt the standards recommended by IEC as their national standards under the conditions permitted by their countries. All differences between the standards recommended by IEC and the standards based on national standards should be clearly stated in the national standards as much as possible. 1 Scope
National Standard of the People's Republic of China
Insulating materlaisforshlpboardpopercablesGI/T 17557—1998
eqvEC 92-351:1983
Not standardized to specify the test requirements for electrical properties, mechanical properties and special properties of insulating materials for decompression power cables2 Referenced standards
The provisions contained in the following standards become the text of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. All parties using this standard should consider the possibility of using the following references as the latest version. GB/T 2951.1—197 General test methods for egg protection materials Part 1: General test methods Section 1, Thickness and dimensions measurement - Mechanical test (IAC811-1-11593) GR/T 2951.2—1997
Test methods for cable insulation and sheath materials Part 1: General test methods Section 2: Thermal aging test methods (idIEC811-1-2:19B5) CB/T51-1997
General test methods for cable insulation and sheath materials Part 1: General test methods Section 4: Thermal aging test (ultIEC81114:1585)
GD/2951.5—1997 General test methods for cable insulation and sheath materials Part 2: Special test methods for aging mixtures Section 1: Heat test - Thermal elongation test - Mineral oil test (idE812-1986)
GB/T2951.6—1997[
General test methods for cable insulation and sheath materials Part 3: Special test methods for aging mixtures Test method Section 1: High temperature positive force test - Anti-cracking test (IDLT1FC:81i-3-1:1.985) GB/T2951.7-1997 General test methods for cable insulation and protection materials Part 3: Special test method for vinyl chloride mixtures Section 2: Loss test - Hot night qualitative test (IDLT1EC811-3-21935) GB/T3048.5-1a94 Test method for electrical properties of wires and hoop insulation resistance test galvanometer comparison method GH/T3486139: Electrical insulation performance test of electric war wire insulation resistance test - electric drop method GB/T9331.1-1988 Vehicle insulation method 0.6/1kV and above shipboard electric cable and wire strand specification EC5021983 Rated voltage 1kV~30kV extruded solid dielectric insulation power cable 3 insulation materials
3. 1 General provisions
The types of insulating mixtures covered by this standard and their codes, the amount of leakage of the conductor during normal current and short circuit are listed in 1, National Quality Supervision and Inspection Requirements 1998-11-09 Approved 1999-06-07 Implementation
G/T 1755--1998
Table 1 Types, codes and maximum color of insulating materials Types of condensation compounds
Ethylene-vinyl ether copolymer
Polyester or similar
Based on elastic
★Normal considerations,
3.2 Electrical properties
The test requirements for the electrical performance of single insulating compounds are listed in Table 2. 1.1.2 Test requirements for electrical properties of liquid mixtures Code of material 1.1.1.2 Test number KrMn·hm (test dial CB/3048.5 and G/T304R-E) at 200, minimum 2.1.2 Test method according to Appendix H of GB9231.1, minimum 30% water discharge (test method according to Appendix H of GB9231.1) 3.3.3 Test requirements for electrical properties of mechanical mixtures before or after aging The test requirements for mechanical properties of mechanical mixtures before or after aging are listed in Table 3. Table 3 Test requirements for mechanical properties of absolute mixtures Code of absolute mixture Mechanical properties after aging (test method according to B/2951.1) 1.1 Degradation, minimum, N/m 2 Fracture growth, minimum, % 2 Mechanical properties after air aging (test method according to B/2951.2) Aging degree (ageing labor difference, minimum, N/m 21 Strength ratio, minimum, N/m a) Change rate, maximum, %
2.2 Design elongation
b) Change rate, maximum, %
0.55 G.02MP air shower test Mechanical properties after aging Test method GB/T2951.2 Article 8-2
Aging test seat [wearing on]:],:
Aging characteristics.h
3.1 Tensile strength
Change rate, maximum,
3.2 Continuous elongation
Change rate, avoid large,
Conducting high allowable degree,
Normal operation
3.4 ​​Special rotten performance
CE/T17557—1998
Absolute mixture Special properties test requirements List 4. Table 4 Special performance test requirements for insulating lubricants Insulating materials High pressure test (test method GB/T295T.E. 8.1) 1 Specification, h Test diameter ≤: 12.5mm) Specimen outer diameter> 12.mm 1.1 Maximum allowable depth, 2 Thermal over-extension test (test method GB/T2951.59) Slowly test, N/mm ||2.1 Maximum elongation,
2.2 Maximum elongation,
3 Anti-cracking test method according to GB2951-0 Article 9.1 Test temperature (±2°C), ℃
Duration of the test,
4 Preliminary test method according to GBT2051-7 Article 6.1) (2.
Test duration
4.1 Maximum allowable number of times. mg/em
5 Low humidity performance
5.1. Chemical protection testbzxz.net
General test 12.Smm)
(Test left method GB29514 No. 8.! Millimeter) Welcome your people
5.2 Tensile test (no roll test) (Test method according to 432951.4 No. 8-3)
Test fast product degree C "
(Test fast method according to GB2851.68.5)
Reach part degree,
(Reduce single 6 transfer 2HT2951.5 No. 8)
And flat degree (connection process meter)
(IR:502 Table 111.-1)
No crack test special duration 11
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