HG/T 20509-2014Design code for instrument power supply system (English PDF)
仪表供电设计规范
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Issued by
Ministry of Industry and Information Technology
Level / Type
Industry · Recommended
Issue date
May 6, 2014
Implementation date
October 1, 2014
Scope
HG/T 20509-2014 is the English-translated version of 仪表供电设计规范.
HG/T 20509-2014 is the Chinese standard "Design code for instrument power supply system".
Its scope clause reads: This code was formulated with a view to unify the specifications of instrument power supply design for chemical industry, to promote normalization of instrument power supply engineering design, and to achieve the purpose of advanced technology, economic feasibility, safety and usability.
This code is applicable to the power supply design of measuring and control instrument of chemical plant. Besides the provisions stipulated in this code, instrument power supply design code shall be in accordance with the requirements of current national standards. Its clauses include general provisions; terms and abbreviations.
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Document preview — HG/T 20509-2014
National Standard of the People's Republic of China
- Replacing
- HG/T 20509-2000
Issued by: Ministry of Industry and Information Technology
Contents
- 1 General Provisions
- 2 Terms and Abbreviations
- 2.1 Terms
- 2.2 Abbreviations
- 3 Instrument Power Supply Scope, Load Level and Type of Power Supply
- 3.1 Power supply scope
- 3.2 Load level and type of power supply
- 4 Instrument Power Supply Quality and Capacity
- 4.1 General power supply quality
- 4.2 Uninterrupted power supply quality
- 4.3 Power capacity
- 5 Instrument Power Supply Configuration Requirements
- 5.1 Power supply configuration principle
- 5.2 General power supply
- 5.3 Uninterrupted power supply
- 6 Power Supply System Design and Design Conditions
- 6.1 Power supply system design principles
- 6.2 Power supply system distribution
- 6.3 Power supply system design conditions
- 7 Power Supply Device Selection
- 7.1 AC uninterruptible power supply
- 7.2 DC power supply and DC uninterrupted power supply
- 8 Selection of Power Supply Equipment
- 8.1 General principles for selection of electrical equipment
- 8.2 Selection of Fuse and Breaker
- 8.3 Equipment Installation
- 9 Power Supply System Wiring
- 9.1 Wiring
- 9.2 Wire sectional area
1 General Provisions
1.0.1
This code was formulated with a view to unify the specifications of instrument power supply design for chemical industry, to promote normalization of instrument power supply engineering design, and to achieve the purpose of advanced technology, economic feasibility, safety and usability.
1.0.2
This code is applicable to the power supply design of measuring and control instrument of chemical plant.
1.0.3
Besides the provisions stipulated in this code, instrument power supply design code shall be in accordance with the requirements of current national standards.
2 Terms and Abbreviations
2.1 Terms
2.1.1 Instrument power supply
DC or AC power supply for measuring and control instruments.
2.1.2 Uninterrupted power supply
Power supply can be continuous a certain serving time after interruption of external power supply, which can be divided into AC uninterrupted power supply and DC uninterrupted power supply.
2.1.3 General power supply
No delay power supply without battery-backed system.
2.1.4 Momentary power failure
The time for momentary interruption of power supply.
2.1.5 Power capacity
Rated value for power output of power supply. Generally, AC power capacity expressed in voltamperes or kilovoltamperes, DC power capacity expressed in emetes of output current.
2.2 Abbreviations
CCS - Compressor Control System
DCS - Distributed Control System
FCS - Fieldbus Control System
PLC - Programmable Logic Controller
SIS - Safety Instrumented System
UPS - Uninterrupted Power Supply
3 Instrument Power Supply Scope, Load Level and Type of Power Supply
3.1 Power supply scope
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 47 pages — is available in the English PDF.
Referenced standards
Cited by
- HG/T 20636.6-2017Code for design management of instrumentation for chemical plants - Checklist for checking and review of instrumentation engineering design documents
- HG/T 4175-2011General technical requirements for instrument power supply systems in chemical plants
- HG/T 4177-2011Automatic complete units for lime milk preparation
- HG/T 4096-2009Field analyzer house systems for chemical plants
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