气压电缆是一种特殊的电缆,其内部填充有气体,以提高电缆的绝缘性能和传输能力。气压电缆通常用于高压输电线路和地下电缆系统中,以满足长距离传输和大电流负载的需求。然而,由于气压电缆的特殊结构和工作原理,其试验和维护需要特殊的方法和设备。
IEC 60141-3:1963标准规定了气压电缆和配件的试验方法和要求,包括外部气压电缆、气压电缆接头、气压电缆终端和气压电缆附件等。其中,外部气压电缆是指在电缆外部施加气体压力,以提高电缆的绝缘性能和传输能力的电缆。该标准要求对气压电缆和配件进行多项试验,包括气压试验、局部放电试验、直流电压试验、交流电压试验、热稳定性试验、机械强度试验等。
在气压试验中,气压电缆和配件需要承受一定的气体压力,以检测其绝缘性能和耐压能力。在局部放电试验中,需要检测电缆和配件的局部放电情况,以评估其绝缘质量。在直流电压试验和交流电压试验中,需要检测电缆和配件的耐压能力和绝缘质量。在热稳定性试验中,需要检测电缆和配件在高温环境下的性能和稳定性。在机械强度试验中,需要检测电缆和配件的机械强度和耐久性。
除了试验要求外,IEC 60141-3:1963还规定了气压电缆和配件的标志、包装、运输和存储要求,以确保其在使用过程中的安全性和可靠性。该标准适用于交流电压高达275 kV的电缆和配件,是气压电缆和配件试验的重要参考标准。
相关标准
- IEC 60141-1:1993 Tests on oil-filled and gas-pressure cables and their accessories. Part 1: Oil-filled, paper-insulated, metal-sheathed cables and accessories for alternating voltages up to and including 400 kV
- IEC 60141-2:1993 Tests on oil-filled and gas-pressure cables and their accessories. Part 2: Oil-filled, paper-insulated, metal-sheathed cables and accessories for rated voltages above 100 kV up to and including 400 kV
- IEC 60141-4:1998 Tests on oil-filled and gas-pressure cables and their accessories. Part 4: Oil-filled cables and accessories for rated voltages above 36 kV up to and including 150 kV
- IEC 60141-5:1998 Tests on oil-filled and gas-pressure cables and their accessories. Part 5: Gas-pressure cables and accessories for rated voltages above 36 kV up to and including 500 kV
- IEC 60141-6:1998 Tests on oil-filled and gas-pressure cables and their accessories. Part 6: Accessories for alternating voltages above 100 kV up to and including 500 kV