Control unit system for HV switchgear - has slide in units with schematic circuit diagrams and controls on front panel

摘要

The control unit system, for h.v. switchgear, has a control panel for each switching area and displays on the front of this panel a schematic diagram of the area that that panel's slide-in unit controls. The units each contain the protective relays, change-over relays and other control devices appropriate to the areas or sections being controlled. The front panel of each slide-in unit displays the schematic circuit diagram across it horizontally with indicator lights and operating elements at the appropriate points on the diagram. On/off switches etc. are provided next to the diagrams.