GB/T 26802.2-2017Industrial control computer system—General specification—Part 2:Safety requirements for industrial control computer (English PDF)

National Standard of the People's Republic of China

ICS

25.040.40

Classification

N 18

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

• Foreword V.
• 1 Scope
• 2 Normative references
• 3 Terms and definitions
• 4 test
• 4.1 Overview
• 4.2 Test sequence
• 4.3 benchmark test conditions
• 4.3.1 Environmental conditions
• 4.3.2 equipment status
• 4.4 Single fault conditions test
• 4.4.1 Overview
• 4.4.2 Application of fault conditions
• 4.4.3 Test duration
• 4.4.4 Conformity after application of fault conditions
• 5 signs and documents
• 5.1 mark
• 5.1.1 Overview
• 5.1.2 logo
• 5.1.3 Power
• 5.1.4 Fuse
• 5.1.5 terminals, connectors and operating device
• 5.1.6 Switches and Circuit Breakers
• 5.1.7 Controls and Indicators
• 5.1.8 Industrial control computer with double or reinforced insulation
• 5.2 Warning signs
• 5.3 logo durability
• 5.4 Documents
• 5.4.1 Overview
• 5.4.2 Industrial control computer rating
• 5.4.3 Industrial Control Computer Installation
• 5.4.4 Industrial Control Computer Operation
• 5.4.5 Industrial Control Computer Maintenance
• 6 anti-shock
• 6.1 Overview
• 6.2 Determination of accessible components
• 6.2.1 Overview
• 6.2.2 Inspection
• 6.2.3 Hazardous electrical components above the opening
• 6.2.4 pre-conditioning control of the opening
• 6.3 Permissible limits of accessible components
• 6.3.1 Overview
• 6.3.2 Limit under normal conditions
• 6.3.3 Limitations under single fault conditions
• 6.4 Protection under normal conditions
• 6.5 Single fault protection
• 6.5.1 Overview
• 6.5.2 Protection Connection
• 6.5.3 Double insulation and reinforced insulation
• 6.5.4 Protection Impedance
• 6.5.5 Industrial Control Computer Automatic Disconnection
• 6.6 Connection with External Circuit
• 6.7 Clearances and creepage distances
• 6.7.1 Overview
• 6.7.2 General requirements
• 6.7.3 Grid Power Supply Circuit
• 6.7.4 Circuits other than the mains power supply circuit
• 6.8 Dielectric Strength Test Procedure
• 6.8.1 Reference test site
• 6.8.2 Wet Pretreatment
• 6.8.3 Test Implementation
• 6.8.4 Voltage test
• 6.9 Structural requirements for protection against electric shock
• 6.9.1 Overview
• 6.9.2 double insulated or reinforced insulation housing
• 6.10 and the power supply connection
• 6.10.1 Power Cord
• 6.10.2 Installation of Non-detachable Power Cables
• 6.10.3 Plugs and Connectors
• 6.11 Input Power Disconnect
• 6.11.1 Overview
• 6.11.2 Exceptions
• 6.11.3 according to the type of power requirements
• 6.11.4 Disconnect device
• 7 anti-mechanical danger
• 8 resistant to mechanical shock and impact
• 8.1 Overview
• 8.2 Housing rigidity test
• 8.2.1 Static test
• 8.2.2 Dynamic test
• 9 to prevent the spread of fire
• 9.1 Overview
• 9.2 Elimination or reduction of ignition sources within the equipment
• 9.3 In the event of a fire, control the flame in the equipment
• 9.3.1 Overview
• 9.3.2 Structural Requirements
• 9.4 limit circuit
• 9.5 Over-current protection
• 10 equipment temperature limits and heat