GB/T 12706.4-2008 in English

《GB/T 12706.4-2008额定电压1kV（Um=1.2kV）到35kV（Um=40.5kV）挤包绝缘电力电缆及附件 第4部分：额定电压6kV（Um=7.2kV）到35kV（Um=40.5kV）电力电缆附件试验要求》由TC213（全国电线电缆标准化技术委员会）归口，主管部门为中国电器工业协会。
GB/T 12706的本部分规定了额定电压3.6／6kV（7.2kV）到26／35kV（40.5kV）且符合GB/T 12706.2-2008或GB/T 12706.3-2008要求的挤包绝缘电力电缆用附件的型式试验和试验要求。
本部分不包括在特殊条件下使用的电缆附件，如架空电缆、海底电缆或船用电缆或危险环境（易爆环境、耐火电缆、地震条件）的附件。

1 Scope

This part of GB/T 12706 specifies the test requirements for type testing of accessories for power cables with extruded insulation with rated voltages from 3.6/6 (7.2)kV up to 26/35 (40.5)kV, complying with GB/T 12706.2-2008 or GB/T 12706.3-2008.
Accessories for special applications, such as aerial cables, submarine or ship cables or hazardous situations (explosive environments, fire resistant cables or seismic conditions), are not included in this part.
Formerly, approvals of products now covered by this part have been achieved on the basis of national standards and specifications and/or the demonstration of satisfactory service performance. The publication of this part does not invalidate existing approvals. However, products approved according to these earlier standards or specifications cannot claim approval to this IEC standard unless specifically tested to it.
It is not necessary to repeat these tests, once successfully completed, unless changes are made in the materials, design or manufacturing process which might affect the performance characteristics.
Test methods are included in GB/T 18889-2002.

Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Types of Accessory
5 Voltage Designations and Maximum Conductor Temperatures
6 Assembly of Accessories to be Tested
7 Range of Approval
8 Test Sequences
9 Test Results
Appendix A (Informative) Identification of Test Cable
Appendix B (Informative) Technical Differences between This Part and IEC 60502-4:2005 and Reasons