| 摘要 |
A structure of UPS comprises a case having an opening over which is mounted a cover. A fastening slot is provided on an inner side of the case proximate to the opening. Two outer lateral sides of the case further include a plurality of heat dissipating elements. The cover further includes at least a fastening projection corresponding to the fastening slot. The cover thereby detachably assembles with the case to enable a change of internal components of the UPS. The structure of the UPS further comprises an annular voltage transformer having a reduced size, the general size of the UPS is thereby reduced to allow convenient carrying and easy mounting in a reduced mounting space.
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