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î~¶¨ëЉºµÄ300/500vÊÇʲôÒâ˼
¾ßówµ½ÒÔφ–î}Can he use the SY cable ¨C in this case the 4 core 6 mm sq on 415 V multiphase ? ¿Í‘ôÏ놖4core ¡Á6 mm sq ÄÜ·ñÓÃÔÚ415v µÄ¶àÏàëŠÖУ¨ÒŽ(gu¨©)¸ñ•ø300/500v£©?
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×Ô¼º²éµ½µÄһЩÙYÁÏ£¬¹©´ó¼Ò…¢¿¨£¬ ÒÔ300/500VžéÀý
rated voltage U¡££¨300V£©---the power-frequency voltage to earth for which the cable is designed î~¶¨ëЉºU¡£ÊÇ늾€¸úµØÃæµÄ늉º
rated voltage U (500V)----- the power-frequency voltage betwwen conductors for which the cable is designed î~¶¨ëЉºUÊÇŒ§(d¨£o)ówÖ®égµÄ늉º
Voltage designation î~¶¨ëЉº±íß_(d¨¢)·½·¨
The cable shall be designated by the rated voltage U¡£and U expressed in the formed U¡£/U unless otherwise specified in the appropriate cable standard. ³ý·ÇßmÓõÄ늾€˜Ë(bi¨¡o)œÊ(zh¨³n)ÓоßówÒŽ(gu¨©)¶¨£¬·ñ„t늾€µÄî~¶¨ëЉº‘ª(y¨©ng)Ô“ÒÔU¡£/UµÄÐÎʽ±íʾ¡£
In an a.c. system, the rated voltage of a cable should be at least equal to the nominal voltage of the system for which it is intend. This condition applies both to the value U¡£and the value U. ÔÚ½»Á÷ϵ½y(t¨¯ng)ÖУ¬ ëŠÀ|µÄî~¶¨ëЉº×îÉÙ‘ª(y¨©ng)Ô“µÈÓÚϵ½y(t¨¯ng)µÄ˜Ë(bi¨¡o)·Q늉º£¬²¢ÇÒͬ•r(sh¨ª)ßmÓÃÓÚU¡£ ºÍU.
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300/500VËù´ú±íµÄÊÇã~¾€ËùÄÜͨß^×î´óµÄ늉º--î~¶¨ëЉº
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ÄÇÊDz»ÊÇÒâÎ¶Öø¿ÉÒԻشð¿Í‘ô4core ¡Á6 mm sq ¿ÉÒÔÓÃÔÚ415v µÄ¶àÏàëŠÖÐÄØ£¿
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