SCHO-85 panels are designed for completing switchgear with a voltage of 380/220 V of three-phase alternating current with a frequency of 50 Hz with a dead-earthed neutral, serving for receiving and distributing electricity, protecting outgoing lines from overloads and short-circuit currents.
The SCHO panel consists of a welded body and a frame on which the function blocks are located. All elements of the case are painted with powder paint. Operational maintenance is performed from the front of the panel. End panels are installed on the sides of the panel (shield SCHO-85).
Boards from panels of SCHO are made with a socle and without. Boards with plinths are installed in rooms with flat floors, in this case, the plinth is a cable channel. Boards without plinths are installed in rooms with an organized structure of cable channels. SCHO panels are fixed using four holes that are located at the base of the frame.
Device and principle of operation: the Input panels are designed to transmit electrical energy from the power transformer to the busbars, which are connected to the linear and sectional panels. The panels are equipped with switching and protective input equipment, current transformers, ammeters and voltmeters, and a current transformer can also be installed at the zero output from the power transformer to protect against ground faults. Input voltage is carried out through a switch and (or) an automatic switch.
Linear panels are designed to transmit electrical energy from busbars to the consumer. They are equipped with switches and fuses or disconnectors and automatic switches. Front connection devices are used. Due to the presence of disconnectors between the switch and the busbars with pole disconnection, it is possible to safely inspect the panels, audit, repair and replace the switches. Panels with automatic switches can also be manufactured without disconnectors.
The panel is a die-welded frame with a door that closes with locks. Inside the frame on the brackets is a frame with equipment installed on it, which is controlled by devices that are installed on the front racks of the frame (control of automatic switches of linear panels is carried out through the Windows in the door).
Insulators are installed in the upper part of the panel for mounting the busbars. From the facade, a dashboard is installed on the upper cornice of the panel, which simultaneously serves as a fence for prefabricated tires. For mounting suitable cables and wires, a perforated corner is provided, welded to the lower belt of the frame. The panels are assembled into a shield using bolted connections through holes in the panel racks.