IEC 60141-3:1963 pdf download,Tests on oil-filled and gas-pressure cables and their accessories – Part 3: External gas-pressure (gas compression) cables and accessories for alternating voltages up to 275 kV.
IEC 60141-3:1963 specifies tests for external gas-pressure, or gas-compression, cables and their accessories used on alternating-current systems with voltages up to 275 kV. In this cable design, the electrical insulation is supported by pressurized gas applied externally, normally through a surrounding pipe or enclosure. The standard aims to verify that the complete cable system can withstand electrical, thermal, mechanical, sealing, and gas-pressure stresses encountered in service.
It covers the principal test conditions and procedures for cable lengths, joints, terminations, and other accessories. The requirements address dielectric withstand at power frequency, impulse or overvoltage performance where applicable, insulation behavior, partial discharge or corona, conductor and sheath continuity, heating, pressure maintenance, gas leakage, and the mechanical integrity of enclosures and seals. Tests are intended to demonstrate that the cable insulation remains effective and that the gas system can maintain the required pressure without unacceptable leakage or damage.
The document provides a basis for type tests and, as applicable, routine, acceptance, or installation tests. Test records should identify the cable construction, rated voltage, gas pressure, conductor arrangement, insulation system, accessory configuration, applied stresses, duration, and observed results.
Overall, IEC 60141-3:1963 promotes uniform qualification and quality control of high-voltage external gas-pressure cable systems, supporting safe installation, reliable operation, and long-term insulation performance in power-transmission networks.