A 6 kV and 0.4 kV switchgear package in one delivery: КСО-Е cubicles, ЩО-90 panels and control cabinets

The task

The customer needed a complete switchgear installation, not separate enclosures from different suppliers. The conditions were:

• Two voltage levels in one order. 6 kV on the HV side and 0.4 kV on the LV side — different construction, different maintenance rules and different crews on site, but one set of documents and one accountable manufacturer.
• 6 kV, not 10. The site network runs at 6 kV, so the cubicles were built specifically for that voltage rather than "universally".
• A readable front. The operator has to see the connection diagram without opening the cubicle or consulting the design documents.

The solution

We built the whole package in-house — from the frames to the labelling.

• HV side — КСО-Е cubicles of the 393 frame size, version 03, rated 6 kV, 630 A. Front access only: the cubicles stand against a wall and are serviced from the front.
• A mimic diagram on every door. Next to the factory rating plate is the connection diagram of that particular cubicle. Together with the functional marking ("Ввід-1", "Лінія-2", "Ввід-3") this gives the operator the full picture from the front.
• Operating mechanisms and interlocks. Manual disconnector mechanisms with colour-coded handles, mechanical interlocks and an earthing bus running along the line-up — the standard set on which the safety of switching operations depends.
• LV side — ЩО-90 panels rated 800 A, climatic version U3, IP20. Inside: moulded-case circuit breakers on the outgoing ways, phase-marked busbars and terminal rows.
• Control cabinets. The delivery also includes compact wall-mounted cabinets with control equipment and an indicating instrument on the door — the units installed alongside the main line-up on site.
• Manufacturer's marking. Every enclosure carries a metal rating plate with the type, ratings, serial number and year; the МV cubicles additionally state the cubicle's position number on the layout drawing.

Figures (from the passports)

HV side — КСО-Е cubicles:

LV side — ЩО-90 panels:

Functional make-up of the line-up (from the front markings): incoming cubicles, a feeder cubicle, distribution panels and control cabinets.

> On the source of these figures. The contents and ratings are given from photographs of the products and the factory rating plates fitted to them: there are no factory passports in this order's folder. The serial numbers quoted are those visible in the frames; the other products in the package carry plates of the same pattern, but we neither decipher nor infer their values.

The series product card: КСО-Е switchgear cubicles, ЩО-90 distribution panels up to 4000 A.

Photo report from production

We will build to your diagram

We will build switchgear for your voltage — 6, 10 or 0.4 kV. MV cubicles, LV panels, control cabinets, mimic diagrams and labelling — from the single-line diagram to factory testing. Send the diagram or a completed questionnaire and an engineer will size the package. → [enquiry form]