T/CPSS 1010-2022 Test Specification for DC Fast Circuit Breakers of Fusion Loss of Control Protection Systems

Scope

Scope: This document specifies the performance testing and methods for direct-current fast circuit breakers in fusion loss-of-cooling protection systems. This document is applicable to the factory and operation and maintenance testing of direct-current fast circuit breakers with a rated voltage not exceeding 1500 V in fusion loss-of-cooling protection systems. Testing of direct-current fast circuit breakers in other fields can refer to this document for implementation. Main technical content: The purpose of this standard is to provide scientific and standardized testing requirements, testing methods, and criteria for judging test results for the performance testing of direct-current fast switches applied in fusion loss-of-cooling protection systems. The direct-current fast switch in the fusion loss-of-cooling protection system is a two-contact switch composed of a main contact and an arc-extinguishing contact, whose main function is to protect superconducting magnets. In the event of magnet loss-of-cooling, the direct-current fast circuit breaker disconnects, forcing the energy dissipation resistor connected in parallel to enter the circuit to limit the current of the superconducting magnet and transfer the energy to the energy dissipation resistor, avoiding damage to the superconducting magnet due to overheating. The reliability and stability of the operation of the direct-current fast switch directly affect the safety of the operation of the superconducting magnets in the fusion system. Before its commissioning, it is necessary to conduct a series of performance tests on its safety and reliability. Regarding the testing standards for switch equipment, the currently effective standards include: GB 14048.1-2012, GB 14048.2-2008, and GB 14048.3-2017. These standards only stipulate the basic characteristics, conditions for use, installation, and transportation, structural and performance requirements, and test items and requirements of conventional low-voltage switch

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