| 摘要 |
This unit comprises three independent rectangular prismatic parts, fitted into each other by superposition, the upper part of which constitutes an independent unopenable cover, on each of the upper faces of which appear hollow turrets at each one of their corners, in the interior of which are accessible the service and couple terminals for the performance of measurments of the characteristics of the current. Fitted on this upper part is the intermediate part, which is the head of the unit, which presents at the bottom of its hollow interior, four notches for passage of the upper ends of the service and couple terminals. The lower part, which is the body of the unit, presents a peripherical recess on the upper edge for the fitting of the unit head, showing at the bottom of its hollow interior, four notches placed in proximity to the corners for passage of the lower ends of the service and couple terminals plus a central notch for passage of the grounding terminal.
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