GB/Z 43963-2024Guidance for determination of clearances, creepage distances and requirements for solid insulation for equipment with a rated voltage above 1 000 V AC and 1 500 V DC, and up to 2 000 V AC and 3 000 V DC. (English PDF)

1 Scope

This document is a technical specification that provides technical committees with the criteria for determining rated voltages from 1000V to:2000V AC and 1500V DC:

Insulation coordination guide for equipment with rated voltage not exceeding 1000 V AC and 1500 V DC, and with higher

For insulation coordination equipment with a voltage of 100 V or lower internal voltage, see IEC 60664-1 for relevant requirements:

This document applies to equipment at altitudes up to:2000m and provides guidance for use at higher altitudes:

This document specifies the electrical clearances, creepage distances and solid insulation guidelines for equipment to meet safety requirements, including relevant electrical tests method:

NOTE: Since functional insulation requirements are not safety requirements, no corresponding provisions are made:

This document does not deal with the determination of the following distances:

---Insulation by liquid;

--- Passing gases other than air;

---By compressed air:

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document:

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document:

GB/T 2423:2-2008 Environmental testing for electric and electronic products Part 2: Test methods Test B: High temperature (IEC 60068-2-2:

2007, IDT)

GB/T 2423:3-2016 Environmental testing Part 2: Test method Test Cab: Steady state damp heat test (IEC 60068-2-78:

2012, IDT)

GB/T 2423:22-2012 Environmental testing Part 2: Test method Test N: Temperature change (IEC 60068-2-14:

2009, IDT)

GB/T 16935:1-2023 Insulation coordination for equipment in low voltage power supply systems Part 1: Principles, requirements and tests (IEC 60664-1:2020,IDT)

IEC 60068-2-78 Environmental testing Part 2-78: Test Cab: Steady state damp heat test (Environmenttesting-

Note: GB/T 2423:3-2016 Environmental testing Part 2: Test method Test Cab: Steady state damp heat test (IEC 60068-2-78:2012, IDT)

Note: GB/T 4207-2012 Determination of tracking resistance index and comparative tracking index of solid insulating materials (IEC 60112:2009, IDT)

IEC 61180:2016 High-voltage test technical definitions, test and procedure requirements, test equipment for low-voltage electrical equipment (High-

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