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3、01 4 IV () , ( ). . 60974-4 26: . 60974-4201 4 1 4 Arc welding equipment. Part 4. Periodic inspection and testing 201601 01 1 . . , 60974-1 60974-6. , 60974, . 1 . . 2 , 60974-1, . C. 2 . , ( ): 60050-151 . 151. (IEC 60050-151 International Electrotechnical Vocabulary Part 151: Electrical and magnet
4、ic devices) 60050-195 . 195. (IEC 60050-195 International Electrotechnical Vocabulary Part 195: Earthing and protection against electric shock) 60050-851 . 851. (IEC 60050-851 International Electrotechnical Vocabulary Part 851: Electric welding) 60974-4201 4 2 60974-1:2005 . 1. (IEC 60974-1:2005 Arc
5、 welding equipment Part 1: Welding power sources1) 60974-6 . 6. (IEC 60974-6 Arc welding equipment Part 6: Limited duty manual metal arc welding power sources) 61557-4 1000 B 1500 B . , . 4. (IEC 61557-4 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipm
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