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对IEC364-4-442安全措施要求的1欧接地电阻和利用电缆金属护套分流作了重点阐述,并对总等电位联接的应用作了说明。
The grounding resistance of 1 ohm required by the safety measures of IEC364-4-442 and the shunting using the metal sheath of the cable are emphatically described, and the application of the total equipotential bonding is described.