YD/T 1235.1-2002Performance requirements for surge protective devices connected to low-voltage distribution systems of telecommunication stations/sites (English PDF)
通信局(站)低压配电系统用电涌保护器技术要求
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Issued by
Ministry of Industry and Information Technology
Level / Type
National · Recommended
Issue date
November 8, 2002
Implementation date
November 8, 2002
Scope
YD/T 1235.1-2002 is the English-translated version of 通信局(站)低压配电系统用电涌保护器技术要求.
YD/T 1235.1-2002 is the Chinese standard "Performance requirements for surge protective devices connected to low-voltage distribution systems of telecommunication stations/sites".
This standard specifies the Communications Authority (station) with a low voltage distribution system surge protector (hereinafter referred to as SPD) of the definition, classification, technical requirements and inspection rules.
This standard applies to Communications Authority (station) low-voltage distribution systems at all levels (low pressure side distribution transformers, power distribution room and room AC input, each room AC and DC power distribution cabinet (box), etc.) with a surge protector Quality inspection and evaluation.
Integrated in the device surge protection can be implemented by reference. Issued on 2002-11-08, in force from 2002-11-08.
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Document preview — YD/T 1235.1-2002
National Standard of the People's Republic of China
- Classification
- K31
Contents
- [Preview only]
- 1 Scope
- 2 Normative References
- 2.1 Term
- 3 Terms and Definitions
- 3.2 Abbreviations
- 3.3 Specifications
- 3.4 Product model and designation
- 3.5 Product marking
- 4 Operating Environments
- 5 Classifications
- 6 Performance Requirements
- 7 Inspection Rules
- 7.1 Packaging
- 7.2 Marking
- 7.3 Transport
- 7.4 Storage
- 7.5 Safety Test for Temporary Overvoltage Failure
- 7.6 Test of Temporary Overvoltage Withstand Characteristic
- 7.7 SPD Thermal Stability Test
- 8 Marking, Packing, Transport and Storage
- 8.1 Voltage Drop Test
- 8.2 Surge Withstand Capability at Load side
- 8.3 Short-circuit Withstand Capability at Load Side
1 Foreword
YD/T 1235.1-2002 was issued by Ministry of Industry and Information Technology on 8 November 2002 and took effect the same day.
It is one of 2 parts of the YD/T 1235 series.
The YD/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.
2 Scope Preview
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.
YD/T 1235.1-2002 is filed under Chinese Standard Classification K31, in the field of electrical engineering.
This catalogue holds 2,288 other YD/T standards without an ICS number.
In this catalogue, YD/T standards carry edition years from 1982 to 2026.
3 About this standard
Sector: Telecommunication Industry Standard (Recommended)
Issued by: Ministry of Industry and Information Technology
English translation: about 11 pages (approximate)
Chinese original: about 16,126 characters
4 Related standards
Other parts of this standard:
YD/T 1235.2-2002 — Testing methods for surge protective devices connected to low-voltage distribution systems of telecommunication station/sites
Standards on related subjects:
GB/T 7251.1-2023 — Low-voltage switchgear and controlgear assemblies - Part 1: General rules
GB 7251.12-2013 — [GB/T 7251.12-2013] Low-voltage switchgear and controlgear assemblies -- Part 2: Power switchgear and controlgear assemblies
5 Classification and status
Chinese Standard Classification (CCS): K 31
Prefix YD/T: recommended standard.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 11 pages — is available in the English PDF.
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