1. The modulus of the drawer height is 200mm. The drawer is only changed in its height dimension, with width and depth dimensions unchanged. Drawers with the same function units feature good interchangeability. The rated current of the unit circuit is 400A and below.
2. Drawer panel has obvious signs indicating the positions of “isolated”, “closing”, “test” and “draw-out”, etc. Drawer unit is provided with mechanical interlock devices.
3. The connectors of various pieces in the sane specification and monolithic structure are used as incoming and outgoing lines of drawers according to the current size. Rod or tube-type ZJ-1 adapter in the same size is used for adapter coupling between unit drawer and cable chamber by the current size and backplane ZJ-2 adapter for 1/2 unit drawer and cable chamber