( 4 ) according to the values calculated theoretically , electromagnetic radiation beyond 25 m from the transmission lines with the voltage at 500 kv meet the standard , and the radiation beyond 4 m from the unilateralism 220 kv transmission lines , 7 m from the bidirectional transmission lines and anywhere around 110 kv are all meet the standard ( 4 )據(jù)理論模式計(jì)算, 500kv的線路在走廊兩側(cè)25米以外,電場(chǎng)強(qiáng)度滿足評(píng)價(jià)標(biāo)準(zhǔn); 220kv線路邊沿單回4m ,雙回7m外滿足電場(chǎng)強(qiáng)度評(píng)價(jià)標(biāo)準(zhǔn)。 110kv線路走廊兩側(cè)均滿足電場(chǎng)強(qiáng)度評(píng)價(jià)標(biāo)準(zhǔn)。磁場(chǎng)強(qiáng)度均能滿足評(píng)價(jià)標(biāo)準(zhǔn)。