概述    Outline

XL-21 型低壓動力配電柜適用于發電廠及工礦企業中，在交流電壓 500 伏及以下的三相四線或三相五線系統作動力配電之用。XL-21 型低壓動力配電柜系戶內裝置靠墻安裝，屏前檢修。外殼用鋼板彎制而成，刀開關操作手柄于箱前右柱上部，可以作為切換電源之用。可根據用戶需要，選用不同型號，不同電流等級的斷路器，滿足不同用戶的需求。

XL-21 Type low voltage power distribution cabinet is applicable to power station and industrial and mining enterprise, used for power distribution in three-phase four-wire or three-phase five-wire system with AC 500V and below. It is installed indoors and near the wall. Repair before shield. Shell is bent with steel plate. Knife switch operation handle is installed to the upside of right column of cabinet front, can be used for switching power. Choose different types and circuit breakers with different current grades to user's specific requirements.

型號及含義   Model and meaning

主要技術參數   The main technical parameters