可用于50Hz和60Hz的高压开关设备的型式试验对频率的要求

Frequency Requirements of High-voltage Switchgear Type Tests Used at 50 Hz and 60 Hz

当中国的高压开关设备出口到使用额定频率60 Hz电网的国家和地区时,该产品需要满足额定频率60 Hz系统的型式试验要求。虽然相关IEC标准对高压开关设备在50 Hz和60 Hz下的型式试验已有明确要求和方法且STL导则也进一步明确了具体试验中的要求,但是为了更容易确定在这两种频率下的型式试验项目,笔者经过研究相关标准对型式试验进行了详细归纳。并对高压开关设备在50 Hz和60 Hz下的某些型式试验做了试验参数的可行性分析。结果表明:除温升试验、试验方式T60、T100s(T100s(b))、T100a、近区故障试验和容性电流开合试验外,其他型式试验在50 Hz或60 Hz下进行均可。这就为产品制造商节省了大量的试验时间和资金。

When the high-voltage switchgears made in China are exported to some regions and countries where the rated frequency is 60 Hz, these products need to satisfy the requirements of type tests at rated frequency of 60 Hz.Although the relevant IEC standards specify the requirements and methods for type test of the switchgears performed at 50 Hz and 60 Hz and STL guides also further specify the requirements in specific tests, the authors sum up the type test items in detail by studying relevant standards in order to confirm them performed at 50 Hz and 60 Hz easily. The authors also analyse the feasibility for some test factors of high-voltage switchgears performed type tests at 50 Hz and 60 Hz. Results show that, except for temperature-rise tests, test duties T60,T100s（T100s（b））, T100 a, short-line fault tests and capacitive current switching tests, other type tests can be performed at 50 Hz or 60 Hz. So this can save plenty of testing time and money for switchgear manufactures.