Electrical installations for outdoor sites under heavy conditions—Part 4:Requirements for the installation
GB/T 9089的本部分规定了户外严酷条件下的电气设施——装置的要求，以确保人、畜、财产的安全和设备的正常运行。
本部分适用于户外严酷条件下（包括露天矿、采石场、存料场和类似场所）采掘、堆取、初加工机械及输送系统等电气设施。
GB/T 9089.1—2008的范围适用于本部分。
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