1 Scope
This standard specifies definitions, classifications, performance requirements and inspection rules of performance requirements for surge protective devices connected to low-voltage distribution systems of telecommunication stations/sites (hereinafter referred to as "surge protective device").
This standard is applicable to quality inspection and assessment of surge protective device connected to low-voltage distribution system of telecommunication stations/sites at all levels (low-voltage side of distribution transformer, a.c. input end of distribution room and power room, a.c and d.c. distribution cabinet (box) at each machine room).
Surge protective device integrated in the equipment may refer to it.
2 Normative References
The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies.
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Operating Environments
4.1 Power Supply
4.2 Climate
5 Classifications
5.1 Classify According to Impulse Test Current Grade
5.2 Classify According to Functions
5.3 Classify according to Ports
5.4 Classify according to Composition
6 Performance Requirements
6.1 Nominal Rated Value
6.2 Overall Requirements
6.3 Surge Protection Performance
6.4 Safety Performance
6.5 Additional Requirement for Two-port SPD and One-port SPD with Separate input/output terminals
6.6 Environmental Applicability
7 Inspection Rules
7.1 Acceptance Inspection
7.2 Type Test
8 Marking, Packing, Transport and Storage
8.1 Information on Marking
8.2 Packing
8.3 Transport and Storage
Appendix A (Normative) Structure of Surge Protective Device (SPD) for Distribution System of Telecommunication Stations/Sites
YD/T 1235.1-2002 引用如下标准：
* GB/T 4942-1993 * GB 10963-1999 * GB/T 14048.1-1993 * GB 17464-1998 连接器件 连接铜导线用的螺纹型和无螺纹型夹紧件的安全要求 * YD/T 1235.2-2002 通信局(站)低压配电系统用电涌保护器测试方法 * YD/T 5098-2001 * IEC 61643-1:1998 "Surge Protective Devices Connected to Low-voltage Power Distribution Systems-Part 1: Performance Requirements and Testing Methods" * IEC 61312-1:1995 "Protection against Lightning Electromagnetic Impulse Part 1: General Principles" * UL 1449-1996 "Standard of Surge Arrester for Transient Voltage" * IEEE Std C62.62-2000 "Test Specifications for Surge-protective Devices for Low Voltage AC Power Circuits"
