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service entrance 服務人員出入處。

service flat

However , by the time a lightning strike has traveled through the distribution network , surge arrestors will have dissipated a proportion of the charge , network impedance will have shaped the impulse and the residual energy can be represented in terms of its waveshape , and its peak current which is what will be present at a service entrance 然而,雷擊經過電力網絡進行傳送以后,避雷放電器會將一部分能量泄放掉,網絡的阻抗也會對電涌進行修整,而殘余的能量將可以以它的波形來體現,其峰值電流也就是建筑物進入端將會出現的情況。

The heavy - duty service entrance protector is too far away , inductance - wise , to be able to limit locally developed transients 因為這個重型的進線端的保護器,由于距離太遠、電感的原因,不能有效地抑制局部產生的電涌。

You might wonder if the surge protector installed at the service entrance would also protect equipment within the facility 你可能想知道安裝在總進線端的電涌保護器是否也會保護建筑內的設備。

This standard makes the installation of an spd at the electrical service entrance compulsory for all new buildings 此標準強制要求所有新的建筑物在電源進入端安裝電源電涌保護器。

They got him with a taser at the service entrance . he doesn ' t remember a thing 他們在入口發現了一名警衛他什么都記不得了