KSO-E Type Single-Front-Access Switchgear Cabinets, Assembled (Dimension 393)

KSO-E prefabricated front-access switchgear cells

KSO-E cells are designed for receiving and distributing three-phase 50 Hz AC electricity in networks with an isolated neutral or a neutral grounded through an arc-suppression reactor. LK Energy Group manufactures KSO-E in series for 6, 10 and 20 kV; versions for 35 kV are made to order according to technical conditions (short-circuit currents and ratings for this class are determined project-specific/TS). Switching is vacuum-type; there is no SF6 gas-insulated version. The enclosure is a prefabricated riveted structure made of galvanized cold-formed profiles, with optional powder coating per RAL.

The cells are equipped with main devices and protection elements according to the order specification; secondary circuit schemes are developed for each individual project. Manufactured to our own technical specifications.

Technical characteristics (serial design 6 / 10 / 20 kV)

KSO or KRU: which to choose for a 6–10 kV switchboard

Which KSO-E scheme your site needs

The exact designation is confirmed against your single-line diagram: send it or a completed questionnaire. Together with the diagram we need the voltage class (6, 10 or 20 kV) and the main-circuit current — 630 or 1000 A.

Specific main circuit schemes, devices, and dimensions are selected for your project. Send us an inquiry sheet — we will prepare a solution.

You do not have to find your scheme in this list — we build any of them. Over eleven years of in-house manufacturing we have built every scheme in the series, and we build any of them today: at 6, 10 and 20 kV, with main-circuit currents of 630 and 1000 A. From the simplest cubicle with a disconnector through to one with a vacuum circuit breaker, a metering cubicle with voltage transformers, and an auxiliary-supply cubicle with a built-in 10–40 kVA transformer.

If your specification carries a scheme with a letter — 03A, 11V, 17V — that is the same scheme in a variant, and it is ours too. The exact designation is confirmed against your single-line diagram: send it to us, or send a completed questionnaire.

How the designation reads

The full designation of a cubicle looks like this:

KSO-E-393-17V / 20 / 0,63 U3

Specifications and passports often record the same cubicle differently — KSO-E-393 17V/10/630-393V, with the current in amps and the frame repeated at the end. It is the same product.

Schemes at 6 and 10 kV

Dimensions are given as H × W × D, mm. The letters A / V / S denote variants of the same scheme: typically a surge arrester is added and/or the cubicle height changes.

Dimensions by version

Overall dimensions may be adjusted to order (catalogue note).

Incomers and feeders with a disconnector

Feeders with a switch-disconnector

Metering cubicles and cubicles with voltage transformers

With an auxiliary-supply transformer

With a vacuum circuit breaker

Bus-section and isolating cubicles

Row components

Schemes at 20 kV

20 kV is not an exception and not a special order: it is a range of its own, with its own frame and its own apparatus. The 20 kV cubicles are built in frame 7 — 2310 × 1000 × 1000 mm. The apparatus: OW-24 disconnectors, OM-24 and OMB-24 switch-disconnectors, HGV-6141F vacuum circuit breakers, OPNp-20/24 surge arresters and TOLU-20 current transformers.

Incomers and feeders with a disconnector

Feeders with a switch-disconnector

With an auxiliary-supply transformer and voltage transformers

With a vacuum circuit breaker

Isolating cubicles and row components

Frames of the 393 series

"393" is not one enclosure but a family of frames. The main-circuit scheme is selected separately from the frame.

Any scheme in this list is built at 6, 10 or 20 kV for 630 or 1000 A. Send us a single-line diagram or a completed questionnaire and we will select the scheme, the frame and the rating for your project.

KSO-E is an assembled single-front-access switchgear cabinet for 6, 10 and 20 kV distribution switchgear (indoor installation, enclosed switchgear/enclosed transformer substations); versions for 35 kV are made to order according to technical conditions. Switching is performed by fixed vacuum circuit breakers and disconnectors; there is no SF6 (sulfur hexafluoride) gas-insulated design. Intended for distribution points at industrial facilities, transformer substations and central distribution points — receiving, metering and distribution of electricity with frequent switching operations. Suitable for designers, contractors and industrial customers. LK Energy's advantage is its own switchgear manufacturing in Odesa since 2015: cabinet ratings and single-line diagrams are made to the customer's project/technical specification, with installation and commissioning.

Technical Data Sheet (PDF) ↓Inquiry Form for Calculation →