Standard Solution: 10 kV RP on KSO Switchgear Cubicles — Full Set of Protection and Automation Schematics
A ready-made set of protection and automation (RZA) schematics for a 10 kV RP on KSO switchgear cubicles: 108 sheets in 10 sections — incomers, bus-tie with ATS, feeder lines, VTs, station-service transformers. PDF is open access, DWG package on request.
Published: 11.06.2026 · Author: Engineering Department of LK Energy LLC
A ready-made set of schematic diagrams for relay protection and automation (RZA), design stage R, for a 10 kV distribution point (RP) on KSO switchgear cubicles (single-side-access assembled cabinets) with two busbar sections: 108 sheets in 10 sections — incomers, a bus-tie circuit breaker with an automatic transfer switch (ATS) circuit, feeder cubicles, voltage transformers with metering circuits (automated commercial electricity metering system, ASKOE), and station-service transformers. The schematics were developed by LK Energy engineers for an actual reconstruction project of an operating 10 kV RP (2023). The PDF is freely available below; the DWG package (17 files) is available on request via the form.
What a 10 kV RP is and when this solution applies
A 10 kV distribution point (RP) is an electrical installation for receiving and distributing electricity at 10 kV without transforming it. Structurally, an RP is assembled from KSO cubicles (single-side-access assembled switchgear cabinets): incomers, a bus-tie circuit breaker, outgoing feeder lines, voltage transformers, and station-service transformers. If power transformers of 10/0.4 kV are also installed in the same premises, the facility is classified as an RTP — a distribution transformer point.
This standard solution addresses a typical task for a design engineer: a single-line diagram of a 10 kV RP with two busbar sections and a relay protection schematic for each cubicle based on RS83-AV2 microprocessor-based terminals, with metering circuits (ASKOE) and automatic transfer switching. The package was developed from an actual reconstruction project of an operating RP and can be adapted for RTPs and other configurations.
Technical parameters of the solution
- Rated voltage: 10 kV, two busbar sections
- Switching: VV-N10 vacuum circuit breakers
- Protection: RS83 series microprocessor-based terminals (RS83-AV2)
- Measurement: 3xZNOLP voltage transformers, current transformers with 0.5S / 10P windings, ASKOE commercial metering node
- Station service: TMG-25 station-service transformer
- Year of development: 2023, schematic language: Ukrainian, format: DWG (AutoCAD)
- Parameters of a specific implementation (rated currents, cubicle type, control-circuit current) are agreed upon via the specification questionnaire
Package contents and downloads
| No. | Cubicle | Purpose | Equipment | Sheets | Schematics |
|---|---|---|---|---|---|
| 1 | Incomer-1 (cubicle No. 9) | Power incomer, busbar section 1 | VV-N10, RS83-AV2, CT 0.5S/10P | 15 | |
| 2 | Incomer-2 (cubicle No. 8) | Power incomer, busbar section 2 | VV-N10, RS83-AV2, CT 0.5S/10P | 15 | |
| 3 | Bus-tie circuit breaker + ATS (cubicle No. 1) | Sectionalizing of busbar sections 1↔2, automatic transfer switching | VV-N10, RS83-AV2, ATS interlock circuit | 13 | |
| 4 | Feeder cubicle, busbar section 1 | Outgoing 10 kV lines | VV-N10, RS83-AV2 | 13 | |
| 5 | Feeder cubicle, busbar section 2 | Outgoing 10 kV lines | VV-N10, RS83-AV2 | 13 | |
| 6 | Spare cubicle (cubicle No. 2) | Spare feeder cubicle | VV-N10 | 15 | |
| 7 | VT-1 (cubicle No. 7) | Voltage measurement, busbar section 1, metering circuits (ShO1) | 3xZNOLP | 7 | |
| 8 | VT-2 (cubicle No. 6) | Voltage measurement, busbar section 2, metering circuits (ShO2) | 3xZNOLP | 7 | |
| 9 | Station-service transformer 1 (cubicle No. 5) | Station-service transformer | TMG-25 | 5 | |
| 10 | Station-service transformer 2 (cubicle No. 14) | Station-service transformer | TMG-25 | 5 |
Sections for cubicles with circuit breakers contain schematic diagrams of protection and measurement circuits, control and signaling circuits, compartment lighting circuits, and an explanatory single-line diagram.
- Full package in a single PDF (108 sheets)
- Specification questionnaire — example 1 · example 2
- RP premises layout plan (1:50 scale)
Schematic previews
DWG package on request
We will send you the full package of 17 DWG files (schematics for all cubicles, layout plan, inter-cubicle connections, ShO1/ShO2 metering cabinets, ShVP cabinet, TM cabinet, specification questionnaire) to your email free of charge.
Frequently asked questions
Can these schematics be used in a working design project?
Yes — as a standard base solution. Site-specific adaptation, relay protection setpoint calculations, the cable schedule, and compliance with the current PUE (electrical installation rules) / DSTU (Ukrainian national standards) are the responsibility of the design engineer. The schematics correspond to an actual 10 kV RP reconstruction project completed in 2023.
What equipment is specified in the schematics?
VV-N10 vacuum circuit breakers, RS83 series (RS83-AV2) microprocessor-based protection terminals, ZNOLP voltage transformers, and a TMG-25 station-service transformer. Our archive also includes versions with other equipment (VV/TEL, RS83-AV3, REF611) — contact us.
How do I get the DWG files?
Fill out the form on this page — we will send the full DWG package to your email within one business day.
Does LK Energy manufacture cubicles based on these schematics?
Yes. We manufacture KSO/KRU cubicles, low-voltage switchgear cabinets, and ShchO-90 panels at our own production facility in Odesa — over 3,000 units of equipment manufactured since 2015.
Can you help adapt the solution for my facility?
Yes, we advise design engineers on equipment selection, non-standard implementations, and filling out the specification questionnaire: +38 067 104 94 91.
The schematics are provided as a reference standard solution. Site-specific adaptation, relay protection setpoint calculations, and compliance with current standards (PUE, DSTU, DBN — state building codes) are the responsibility of the design engineer. LK Energy bears no responsibility for applying the solution without adapting it to the conditions of a specific facility.
Any questions left?
Write or call us — we answer to the point. Preliminary reply within 24 hours.
+380 67 104 94 91