GB/T 21399-2008Evaluating rule of automatic control system for grain driers (English PDF)
粮食干燥机自动控制系统评定规则
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 3, 2008
Implementation date
July 1, 2008
Scope
GB/T 21399-2008 is the English-translated version of 粮食干燥机自动控制系统评定规则.
GB/T 21399-2008 is the Chinese standard "Evaluating rule of automatic control system for grain driers". Its scope clause reads: This standard specifies the technical performance requirements grain dryer automatic control system, test methods and evaluation methods.
This standard applies to all types of grain dryer automatic control system (control system). Its clauses include general requirements.
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Document preview — GB/T 21399-2008
National Standard of the People's Republic of China
- ICS
- 65.060.99
- Classification
- B 91
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 General requirements
- 3.1 General requirements
- 3.2 Safety Requirements
1 Scope
This standard specifies the technical performance requirements grain dryer automatic control system, test methods and evaluation methods.
This standard applies to all types of grain dryer automatic control system (control system).
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 2423.1-2001 Environmental testing for electric and electronic products Part 2. Test methods Test A. Cold (idt IEC 60068-2-1.1990)
GB/T 2423.2-2001 Environmental testing for electric and electronic products Part 2. Test methods Test B. high temperature (idt IEC 60068-2-2. 1974)
GB/T 2423.3-2006 Environmental testing for electric and electronic products Part 2. Test methods - Test Cab. Damp heat test (IEC 60068-2-78.2001, IDT)
GB 5491-1985 grain and oilseeds testing for sampling, and sample method
GB/T 5497-1985 grain and oilseeds - Determination of water test
GB/T 11605-2005 humidity measurement
GB/T 17626.2-2006 Electromagnetic compatibility - Testing and measurement techniques - Electrostatic discharge immunity test (IEC 61000-4-2.2001,
IDT)
GB/T 17626.3-2006 Electromagnetic compatibility - Testing and measurement techniques RFEMS test (IEC 61000-4-
3.2002, IDT)
GB/T 17626.4-1998 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient burst immunity test (idt IEC 61000-4-4.1995)
GB/T 17626.5-1999 Electromagnetic compatibility - Testing and measurement techniques - Surge (impact) immunity test (idt IEC 61000-4-5.
1995)
GB/T 17626.11-1999 Electromagnetic compatibility Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity
Test (idt IEC 61000-4-11.1994)
Low voltage power distribution design specifications GB 50054-1995
3 General requirements
3.1 General requirements
3.1.1
The control system manufactured in accordance with prescribed procedures approved product drawings and technical documents.
3.1.2
Control system components and parts shall comply with the relevant standards, and after passing inspection before assembly.
3.1.3
Control system should be able to work at a relative humidity of 0 °C ~ 40 °C ambient temperature, and 20% to 80% air. sensor
And control means relative humidity should be able to work at -20 °C ~ 40 °C ambient temperature and 20% to 90% air.
3.2 Safety Requirements
Fire control system should be set, static grounding, leakage and overload protection and other safety devices. Use of electrical components, electrical wire, electrical
Connection, the control device shall be designed to comply with the relevant safety standards.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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