Fixed firefighting systems - Components for gas extinguishing systems - Part 10: requirements and test methods for pressure gauges and pressure switches.
固定消防系统。气体灭火系统元件。第10部分：压力计和压力开关的试验方法和要求。
Fixed firefighting systems - Components for gas extinguishing systems - Part 13: requirements and test methods for check valves and non-return valves.
固定消防系统。气体灭火系统用元件。第13部分：止回阀要求和试验方法。
Based on the interrupting test results of this break unit with different parameters and structures, the physically designing principles of extinguishing arc fashion in HVDC breaker are introduced.
在不同参数、结构高压直流断路器单元开断试验结果的基础上，提出高压直流断路器灭弧方式的物理设计原则。
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