Single-front medium-voltage switchgear 10 kV KSO-285

The single-front metal-enclosed switchgear KSO-285 for 6–10 kV systems is intended for reception, distribution, and protection of three-phase 50 Hz AC in networks with isolated or earthed neutral. The equipment is installed in indoor MV switchgear lineups of package transformer substations (PTS), at industrial and power-plant substations, on municipal and infrastructure sites, and in factory-built modular indoor switchrooms. The baseline operating concept is “door-closed operation” of the primary device, combined with comprehensive interlocking and service convenience that does not require advanced operator skills.

Purpose and application

KSO-285 cubicles serve as incomer, bus-section and feeder units in medium-voltage distribution. Typical applications include: intake and distribution from 6–10 kV power transformers; connection of cable and overhead lines; busbar sectionalizing and automatic transfer (ATS); auxiliary services supply; connection of voltage transformers (VTs), measurement and protection circuits. Unified interfaces for switching devices and instrument transformers (CTs/VTs) allow easy project-specific adaptation and integration into existing lineups during refurbishment. Applicable requirements for normal service conditions, dielectric tests, internal-arc behavior and construction follow the IEC 62271 series for MV switchgear.

Service conditions

Standard environmental classification and location type - EN/IEC 60721-3-3 (stationary use at weather-protected locations, i.e. indoor). The enclosure degree of protection is IP20 per IEC 60529, providing protection against access to hazardous live parts and ingress of large solid objects; the selection of higher local IP ratings by zones is performed as required by the standard and thermal checks. For high-altitude installations, derating and clearance adjustments follow IEC 62271-1 and are reflected in insulation design and verification tests.

Layout and construction

Two enclosure concepts are available: (1) a welded structural-steel frame with powder-polymer coating; (2) a bolted sheet-steel enclosure with Aluzinc/galvanized panels on non-welded fasteners. Inside the cubicle are the vacuum circuit-breaker (or alternative on request), disconnector/earthing switch, current and voltage transformers, main busbars, protection & control IEDs, and terminal blocks of secondary circuits. Front viewing windows enable visual status checks. A service light and outlet allow routine work while main and auxiliary circuits remain energized, subject to operating procedures.

Instrument transformer selection for KSO-285 follows the IEC 61869 series (superseding IEC 60044) - notably Parts 2 and 3 for CTs and VTs - ensuring correct accuracy classes, thermal/dynamic withstand, magnetization behavior and compatibility with protection devices.

Safety and interlocking

KSO-285 implements coordinated mechanical interlocks to prevent hazardous actions: blocking operation of the disconnector with the breaker closed; blocking closing of the earthing switch with the disconnector closed; blocking closing of the disconnector onto an earthed circuit; and blocking door opening unless the circuit is earthed. Core requirements for switching devices and interlocking are defined by IEC 62271-1 and the product parts IEC 62271-100 (circuit-breakers) and IEC 62271-102 (disconnectors and earthing switches), including endurance, operating forces, clearances, and power-frequency/impulse withstand levels.

On request, cubicles can be supplied with Internal Arc Classification (IAC) to IEC 62271-200, with accessibility class A and directions F/L/R (e.g., IAC AFLR 20 kA 1 s). Pressure-relief paths discharge hot gases into a safe area or vent hood to minimize consequences of arc faults and direct the energy away from personnel.

Variants and options

Baseline KSO-285 variants include: incomers; bus-section units with breaker or disconnector; outgoing feeders; VT/CT panels; auxiliary-services panels; metering sections; and bus couplers between sections. Options:
- breaker choice (vacuum breaker to IEC 62271-100 switching-duty requirements; alternative types on agreement);
- manual or motor operators, withdrawable or fixed arrangements;
- microprocessor protection and automation terminals (differential, directional, auto-reclose/ATS), communications and IEC 61850 (MMS/GOOSE/SV) for SCADA/DCS integration;
- anti-corrosion systems, thermal insulation and heaters, seismic design, temperature & partial-discharge monitoring, arc-flash sensors;
- interfacing with other cabinet series (incl. KSO-2) via transition panels. IEC 61850 support ensures multi-vendor interoperability and fast exchange of operational data, events and oscillography.

Typical configurations

For standard 6–10 kV schemes the following configurations are typical:
1) Incomer - transformer/line connection with metering and ATS;
2) Bus-section - bus splitting for maintenance and system flexibility;
3) Feeder - outgoing lines with full protection and current/voltage diagnostics;
4) VT/CT panel - supply of measuring and protection circuits, energy metering;
5) Auxiliary services - supply of control power and life-support systems;
6) Bus coupler - inter-section bus links. Each configuration can be factory-pre-equipped with cable terminations, bus links and P&C interfaces to reduce site work.

Standards and compliance (key references)

• IEC 62271-200 - metal-enclosed MV switchgear and controlgear; internal-arc classification (IAC), LSC/partition classes, type & routine tests.
• IEC 62271-1 - general requirements (service conditions, insulation levels, electrical & mechanical tests).
• IEC 62271-100 - AC circuit-breakers (switching duties, endurance and test sequences).
• IEC 62271-102 - disconnectors and earthing switches (drives, interlocking, endurance).
• IEC 60529 - degrees of protection by enclosures (IP code) - selection of IP20 and locally increased IP by zone.
• EN/IEC 60721-3-3 - environmental classification for stationary use at weather-protected locations (indoor).
• IEC 61869-2/-3 - instrument transformers (CTs/VTs) for protection and metering.

Partnering with contractors, manufacturers and investors

We are open to cooperation with manufacturers of switchgear and steelwork, EPC contractors and investors interested in organizing production of MV cubicles. We provide a technology package for localization: material specifications, purchased-parts lists, coating/galvanizing requirements, quality control plans, installation and commissioning instructions. Step-by-step localization is possible - from assembly to full cycle with enclosures and busbars - including staff training and process audits. This approach enables serial production without pilot prototypes, shortens validation and ensures conformity to current IEC practices.

Documents

A complete set of design and manufacturing documents is available for KSO-285: tender package (questionnaires, specifications, one-line/functional diagrams), working drawings, purchased-parts specifications, 3D models of enclosures and assemblies, cable schedules, and nameplate/marking templates. File formats: AutoCAD (DWG/DXF), SolidWorks (SLDPRT/SLDASM), Parasolid (x_t/x_b). Documentation is adapted to your production capabilities (sheet-metal bending/welding/powder coating), component range and site HSE procedures.

Integration into digital substations and automation systems

On request, KSO-285 is supplied with IEC 61850-enabled IEDs: logical-node data models, MMS/GOOSE/SV services for high-speed protection and control messaging, and SCADA/HMI integration. This ensures multi-vendor interoperability, reduces copper wiring volume and increases observability of the switchroom.

Operational advantages

- Door-closed breaker operation reduces injury risk and simplifies switching.
- Comprehensive interlocking prevents operator error.
- Modularity and unified parts simplify spares logistics and speed up repairs.
- Internal-arc-classified designs improve industrial safety and alignment with corporate HSE rules.
- Full compatibility with modern protection IEDs and digital-substation protocols streamlines modernization and integration.

Technical data

We offer documentation for manufacturing KSO-285:
- Preliminary technical package for tenders: questionnaires, specifications, one-line diagrams, equipment lists - for quick compliance checks and quotation preparation.
- Working drawings, 3-D models and a complete design set to launch KSO-285 production at your facility. If you lack in-house capacity for enclosures, busbars or steelwork, we can place fabrication with certified partners; you perform assembly, routine tests and installation on site.
- All documentation can be promptly adapted to project requirements, plant standards and local procedures.
- If your substation already uses other manufacturers’ cubicles, we will develop compatible add-on designs (bus/cable interfaces, transition panels, P&C and communications interfacing).

Why work with us

- No need to maintain a large team of senior engineers: the package is structured so a mid-level engineer can work confidently.
- No pilot builds required: proven modules and test programs allow immediate serial launch.
- Consulting across the entire process: from component sourcing to commissioning, including IEC/GOST test programs (dielectric, functional, protection checks).
- Digital integration support: IED configuration, IEC 61850 data models and MMS/GOOSE setup.

For additional information on KSO-285 please contact: inbox@proekt-energo.com

As practice shows, every design-stage error multiplies fabrication and lifecycle costs. Proper specification and adherence to standards (IEC 62271, IEC 61869, IEC 60529, etc.) minimize risks.

PDF - Download KSO-285 technical information

Single-front medium-voltage switchgear 10 kV, type KSO-219

Single-front metal-enclosed switchgear 6–10 kV KSO-219 is intended for the reception, distribution and switching of three-phase 50 Hz AC power in networks with isolated, compensated or effectively earthed (grounded) neutral. KSO-219 belongs to the class of medium-voltage metal-enclosed switchgear designed for long service life, easy maintenance/retrofit, and safe operation of personnel without de-energizing adjacent feeders when standard interlocks and procedures are observed.

Typical applications of KSO-219:
- indoor switchgear (indoor substations) of package transformer substations (prefabricated substations);
- substations of industrial facilities and infrastructure sites;
- auxiliary switchgear of power plants;
- municipal utilities (water, district heating, urban infrastructure);
- distribution points, supply centers and sectioning nodes of urban and industrial networks;
and other power-supply installations.

KSO-219 panels can be installed both in permanent indoor substation buildings and in special factory-built, rapidly deployable modules. Distinctive features of KSO-219:
- two main enclosure concepts: (1) welded carbon-steel frame with polyester powder coating; (2) aluminium-zinc (galvanized) coated sheet-steel with riveted/bolted joints - for enhanced corrosion resistance and maintainability;
- closed-door operation for all circuit-breaker manipulations; front viewing windows provide visual status of the primary switching devices;
- mechanical and electrical interlocks eliminate hazardous operations (see the “Safety and interlocking” section);
- internal lighting in every panel; receptacles for portable lamps and a light switch are brought to the front; lamp replacement is allowed without de-energizing main and auxiliary circuits;
- docking with other KSO family panels (e.g., KSO-2) via transition panels, facilitating step-by-step modernization of existing switchgear.

Purpose and application

KSO-219 is used to build incoming, bus-section and feeder connections of 6–10 kV distribution networks, to supply power transformers, distribute energy over cable and overhead lines, connect reactive-power compensation banks, process drives and special loads. The cubicles provide integration of protection and control IEDs (instantaneous/time overcurrent, earth-fault, sensitive earth-fault, autoreclosing, automatic transfer, etc.), organization of commercial and/or technical metering, and dispatching (SCADA/DCS) via standard communication interfaces. Owing to its block-modular architecture, KSO-219 scales easily within indoor switchgear/packaged substations, supports section extensions, bus bridges and temporary bypass schemes for maintenance.

Service conditions

Base environmental category - EN/IEC 60721-3-3 (weather-protected stationary use indoors with natural ventilation in temperate climates). Default enclosure degree of protection - IP20 to IEC 60529 (protection against finger/tool access to hazardous parts and ingress of specified solid objects). Where required, individual panels/compartments can be supplied with higher degrees of protection (e.g., IP31/IP41) considering heat dissipation and convection.
Optional extensions cover a wider range of conditions: anti-condensation space heaters, temperature/humidity sensors, filter-fan units, corrosion-resistant versions, dust-/moisture-sealed cable entries, as well as vibration- and seismic-resistant solutions. Selection and application of degrees of protection follow IEC 60529 (IP Code); environmental categories follow EN/IEC 60721-3-3 (see Standards below).

Layout and construction

The internal layout of KSO-219 is based on functional segregation into compartments: low-voltage (relay), apparatus/withdrawable unit (depending on design - drawout circuit-breaker, load-break switch, disconnector, or switch-fuse combination), busbar and cable. Inter-compartment partitions, metal shutters and insulating screens prevent access to live parts when the apparatus is racked out. Contact systems are rated for the declared short-circuit thermal and dynamic stresses; primary busbars are copper or aluminium with cross-sections sized for the specified currents (see the “Technical data” table).

The relay compartment is segregated from primary circuits and houses protection IEDs, measuring instruments, telemetry modules, terminal blocks and DC auxiliary power sources. The cable compartment provides dedicated earthing (grounding) points, brackets for cable fixing and space for current/voltage transformers. The layout minimizes arc volumes, provides directed gas exhaust for abnormal conditions, and ensures easy access for routine maintenance.

Safety and interlocking

The safety concept combines mechanical and electrical interlocks that prevent incorrect operations and access to live parts:
- blocking of disconnector operations with the circuit-breaker closed;
- blocking of disconnector closing with the earthing (grounding) switch closed;
- blocking of earthing-switch closing with the disconnector closed;
- door interlocks (including blocking of door opening when the earthing switch is open);
- circuit-breaker operations permitted only with the panel door closed (closed-door operation);
- visual position indication of devices through viewing windows and mechanical indicators;
- electrical interlock circuits via limit switches, key-interlocks and shutter-position monitoring devices.

On request, panels can be supplied with internal arc classification (IAC) with accessibility class (A) and directions (F/L/R - front/side/rear) for specified current/time (e.g., IAC AFLR 20 kA 1 s). Requirements for internal arc protection and test methods are defined in IEC 62271-200 for AC metal-enclosed switchgear 1–52 kV.

Versions and options

• Incoming/backup/bus-section - circuit-breaker or disconnector, bus-coupler modules, implementation of automatic transfer/autoreclosing and bus sectioning.
• Outgoing feeder - drawout circuit-breaker, CTs/VTs, protection IED (IOC/TOC/SEF/EF), metering and telemetry.
• Transformer feeder - switch-fuse combination or circuit-breaker + protection IED; gR/aR fuses selected to transformer rating.
• Metering/measurement cubicle - drawout VT truck, commercial metering cabinet, interfaces for AMR/AMI systems.
• Reactive-power compensation - capacitor-bank feeder with appropriate switching and protections.
• Digital options - arc-flash sensors, temperature sensors on busbars/contacts, integration via Modbus RTU/TCP, IEC 60870-5-104, IEC 61850 (GOOSE).
• Enhanced enclosure protection - selected panels at IP31/IP41, versions for aggressive environments, seismic-rated fixings.

Instrument transformers are applied in accordance with the IEC 61869 series (Part 2 - current transformers, Part 3 - voltage transformers), ensuring correct operation of metering and protection functions.

Typical configurations

• Single-section busbar system with one incoming feeder and a group of outgoing feeders; line or transformer backup can be implemented.
• Two-section busbar system with a bus-section circuit-breaker and automatic transfer on incomers; bus bridges between switchboards are possible.
• Bypass bus arrangement - enabling maintenance of feeders without service interruption.
• Module for packaged substation - a set of KSO-219 panels in a climate-controlled container with gas relief, ventilation and micro-climate subsystems per IEC 62271-202.
• Commercial metering node - dedicated cubicle with VTs/CTs and metering cabinet, integration with AMR/AMI and upper-level systems.

Compliance with standards

Design, manufacture and testing of KSO-219 follow applicable international and harmonized standards for 6–10 kV medium-voltage switchgear. Key references include:

• IEC 62271-200 - AC metal-enclosed switchgear and controlgear for 1–52 kV; defines internal-arc classification (IAC) and test methods.
• IEC 62271-1 - Common specifications for high-voltage (MV/HV) switchgear and controlgear.
• IEC 62271-102 - AC disconnectors and earthing switches.
• IEC 62271-103 - AC switches for rated voltages above 1 kV and up to and including 52 kV.
• IEC 62271-105 - Switch-fuse combinations for 1–52 kV.
• IEC 62271-202 - Prefabricated substations for AC 1–52 kV (for containerized solutions).
• IEC 60529 - Degrees of protection provided by enclosures (IP Code).
• EN/IEC 60721-3-3 - Environmental conditions - classification for weather-protected stationary use (replaces GOST 15150 U3).
• IEC 61869-2/-3 - Instrument transformers (CTs and VTs) for measurement and protection.
• IEC 60071-1 - Insulation coordination - selection of withstand voltage levels for equipment above 1 kV.

Technical data

We offer documentation to manufacture KSO-219:
- Preliminary technical documentation for tender participation: single-line solutions, equipment lists, short-circuit current calculations, data sheets, explanatory notes, delivery schedules and risk maps.
- A complete “production-ready” working package for organizing manufacturing at your facility: specifications, lists of purchased components, assembly drawings, sheet-metal flat patterns and bend tables, connection and wiring diagrams, cable schedules, protection-settings tables, FAT/SAT test programs.
- If you lack in-house sheet-metal cutting/bending capability, we assist with cooperation: selection of metalworking, powder-coating and plating subcontractors, procurement of cabinet hardware and busbar fittings, supply of primary and secondary devices with factory certificates.
- Adaptation of documentation to project requirements, national norms and your technological capabilities (tooling, tolerances, coatings, steel grade, batch size), support of initial series and personnel training.

Why work with us

- No need to maintain a large team of highly qualified engineers: you receive a complete documentation set that a mid-level engineer can execute when following the instructions.
- Faster time-to-series: our libraries of standard subassemblies and proven solutions enable batch launch with few or no prototypes.
- Technology support: consulting on protection-relay commissioning, interlock verification, configuration of communication protocols (Modbus/IEC 60870-5-104/IEC 61850), preparation of FAT/SAT programs, as well as operation, maintenance and retrofit (e.g., replacing circuit-breakers and actuators on existing trucks without changing the enclosure).

Partnering with contractors and investors

We are open to cooperation with manufacturers of electrical apparatus and metal structures, design and installation companies, and investors interested in localizing production of KSO-219. We provide: production audits, process qualification, assistance in preparing for type and routine tests, certification support, development of training programs and operating documentation packages. For regional markets we align local requirements (marking, documentation language, environmental category, IP selection) and substitute components with logistically available equivalents without loss of functionality or safety.

Deliverables and files

• 3D models and assemblies: SolidWorks (SLDPRT/SLDASM), Parasolid (x_t/x_b), STEP, IGES - for BIM/PLM integration.
• Drawings and flat patterns: AutoCAD (DWG), DXF - for laser cutting, stamping and sheet-metal bending.
• Secondary-circuit packages: schematic and wiring diagrams, terminal/wire tables, telecontrol signal lists, HMI templates.
• Protection IED configurations and exchange files (CID/SCD) for IEC 61850, settings for IEC 60870-5-104/Modbus, settings protocols and test reports.
• Installation & commissioning manuals, interlock and arc-protection test procedures, FAT/SAT programs and checklists.

For more information on KSO-219 contact: inbox@proekt-energo.com

…and, as is well known, an error made at the design stage costs ten times more in manufacturing and a hundred times more in operation.

Documents

PDF - Download KSO-219 technical information

Single-front medium-voltage switchgear 10 kV KSO-2 (KSO-2U)

The single-front metal-enclosed switchgear series KSO-2 (KSO-2U) is intended for the reception, distribution, and switching of three-phase 50 Hz AC in 6–10 kV networks with isolated, resonant-earthed (compensated) or effectively earthed neutrals. The panels belong to the class of metal-enclosed medium-voltage switchgear and are used in indoor switchrooms (MV switchgear lineups), package transformer substations, and factory-built modular block-substations. The design of the cubicles is focused on high operational availability, personnel safety, and easy integration into existing lineups.

KSO-2U panels are used in:
- indoor MV switchgear of package transformer substations;
- substations of industrial plants;
- auxiliary services switchgear of power stations;
- municipal infrastructure nodes and distribution centers;
- distribution points and sectionalizing nodes of urban/industrial grids;
and other power-supply facilities.

KSO-2U can be installed both in permanent switchrooms and in rapidly deployed factory-built modules. Key construction features:
- enclosures are available in two versions: (1) welded steel frame with durable powder-polymer coating; (2) bolted sheet-steel enclosure with Aluzinc (or zinc) coated panels and non-welded fasteners;
- simple and safe operation enables maintenance by mid-level staff when procedures are followed;
- all breaker operations are performed with the door closed; front windows are provided to check the position of primary devices;
- each cubicle includes a lamp holder for internal lighting; a front-mounted light switch and service outlet for a portable lamp allow lamp replacement without de-energizing main and auxiliary circuits;
- KSO-2U can be interfaced with other KSO-2-type panels using transition panels, which simplifies modernization of existing lineups.

Purpose and application

KSO-2U is used to build incomer, bus-section and feeder bays, to connect power transformers, capacitor banks, process drives and external supply lines. The panels support protective relaying and automation functions (instantaneous/time-delay overcurrent, earth-fault/zero-sequence, neutral displacement, autoreclose, automatic transfer), revenue/technical metering, and remote control. Thanks to a modular base, cubicles are easily configured for the required schemes (single-bus, double-bus with sectionalizer, bypass bus system, bus tie/couplers and reserve incomers) and are scalable within switchrooms and package substations.

Service conditions

Standard environmental classification and location type - per EN/IEC 60721-3-3 (indoor, weather-protected locations). The base enclosure degree of protection is IP20, providing protection against access to hazardous parts and ingress of large solid objects; on request, selected compartments and facades can be supplied with higher protection (e.g., IP31/IP41) while maintaining thermal limits. Optional filters/louvers, anti-condensation heaters, temperature and humidity sensors, and micro-climate controllers are available. Versions with enhanced vibration/seismic resistance, anti-corrosion coatings for aggressive environments, and dust/water-protected cable glands and feed-throughs can be supplied.

Layout and construction

Each cubicle is split into functional compartments: low-voltage (relay), apparatus/withdrawable unit (depending on version - withdrawable vacuum circuit-breaker, load-break switch, disconnector or switch-fuse unit), busbar and cable compartments. Metallic partitions and shutters prevent access to live parts during truck withdrawal. Busbars are copper or aluminum with sections and hardware sized for declared short-time and peak withstands. The cable compartment provides convenient earthing points, cable cleats, extra shelves for CTs/VTs, and provisions for arc-flash sensors.

Primary devices include: medium-voltage vacuum circuit-breakers, disconnectors and earthing switches with independent operating mechanism, load-break switches, and combined switch-fuse units for transformer feeders. Instrument transformers (CTs/VTs) are selected to meet protection and metering accuracy classes. Protection IEDs, metering cabinets, RTUs and communication interfaces (Modbus RTU/TCP, IEC 60870-5-104, IEC 61850/GOOSE) are supported.

Safety and interlocking

KSO-2U implements a set of mechanical and electrical interlocks to prevent hazardous operations:
- blocking of disconnector operation with the breaker closed;
- blocking of disconnector closing with the earthing switch closed;
- blocking of earthing switch closing with the disconnector closed;
- door interlocks (no opening unless the circuit is earthed, etc.);
- breaker operation only with the door closed;
- viewing windows and mechanical position indicators of devices.

On request, panels can be supplied with internal arc classification (IAC) with accessibility class (A) and directions (F/L/R - front/side/rear) and with specified current/time ratings (e.g., IAC AFLR 20 kA 1 s). Pressure-relief paths discharge hot gases to a safe area or into a vent duct/hood. Type tests and IAC marking are agreed within the project scope and FAT/SAT programs.

Variants and options

• Incomer/Reserve/Bus section - with vacuum circuit-breaker or disconnector, with optional ATS/AR, measurement and metering.
• Outgoing feeder - withdrawable breaker, CTs/VTs, protection IED (overcurrent/earth-fault/neutral-displacement), telecontrol interfaces.
• Transformer feeder - switch-fuse unit or breaker with relay protection; fast overcurrent protection and gR/aR current-limiting fuses are supported.
• Measuring/metering cubicle - VT block, metering cabinet (including revenue metering) with AMI/AMR integration.
• Reactive-power compensation - capacitor-bank feeders with suitable switching devices and protections.
• Digitalization - arc/temperature sensors, position readers, SCADA/DCS integration, IEC 61850/GOOSE.
• Enhanced enclosure protection - selected facades/compartments to IP31/IP41, anti-corrosion coatings, seismic design.

Typical configurations

• Single-bus system with one incomer and multiple feeders, with allowance for future extension.
• Double-bus with sectionalizer with bus-section breaker and automatic transfer.
• Bypass-bus scheme for maintenance without service interruption.
• Module for PTS/MV switchroom - a KSO-2U set packaged in a conditioned container with ventilation and arc-gas exhaust.
• Metering node - a dedicated cubicle with VTs/CTs, metering cabinet and communication channels to AMI/AMR.

Standards and compliance

KSO-2U is engineered and manufactured to applicable international standards for medium-voltage switchgear (project-specific lists can be finalized during engineering):

• IEC 62271-200 - metal-enclosed switchgear and controlgear 1–52 kV, including internal-arc classification (IAC) and type/routine tests.
• IEC 62271-1 - general requirements (service conditions, insulation levels, electrical and mechanical tests).
• IEC 62271-100 - AC circuit-breakers.
• IEC 62271-102 - disconnectors and earthing switches.
• IEC 62271-103 - switches and switch-disconnectors.
• IEC 62271-105 - AC switch-fuse combinations.
• IEC 60529 - degrees of protection (IP Code).
• EN/IEC 60721-3-3 - environmental classes for stationary use in weather-protected locations.
• IEC 61869-2/-3 - instrument transformers (CTs/VTs) for protection and metering.
• IEC 61936-1 - power installations exceeding 1 kV AC (design and erection rules).
• IEC 62271-202 - AC prefabricated substations (for containerized/block-substation applications).

Partnering with manufacturers and investors

We are open to cooperation with manufacturers of switchgear components and steelwork, engineering and installation companies, as well as investors interested in localizing KSO-2U production. We provide technical-support packages: transfer of design/manufacturing documentation, training for design and process engineers, first-series support, site audit, development of FAT/SAT programs and interlock-verification methods, and assistance with type-test programs and certification protocols. For regional markets we align to local codes, specify components with accessible logistics, and agree labeling and documentation languages.

Documents

• Design/manufacturing documentation set: one-line and schematic diagrams, wiring diagrams, bills of materials, specifications, cable schedules, and protection-setting tables.
• 3D models and assemblies: SolidWorks (SLDPRT/SLDASM), Parasolid (x_t/x_b), STEP, IGES - for BIM/PLM workflows.
• Drawings and flat patterns: AutoCAD (DWG), DXF - for laser cutting, stamping and sheet-metal bending.
• Protection IED templates, HMI/SCADA configurations, IEC 60870-5-104/IEC 61850 protocol mappings.
• Installation and commissioning manuals, FAT/SAT procedures, interlock and arc-protection test instructions.

Operation, maintenance and lifecycle

The service strategy includes scheduled inspections, periodic torque checks of busbar joints, insulation condition checks and dielectric tests, verification of breaker performance, disconnector/earthing-switch drives, arc-sensor operation and pressure-relief paths. Based on diagnostics, risk maps and modernization plans are developed: migration to digital protection IEDs, online monitoring of heating and partial discharges, raising enclosure IP by zones, and refinement of cable entries. Retrofit kits are available (replacement of breakers and drives on withdrawable trucks without changing the enclosure), extending the lineup life without a full rebuild.

Technical data

We offer documentation for manufacturing KSO-2U:
- Preliminary technical package for tenders to supply KSO-2/KSO-2U, including input data for feasibility checks, compliance with tender requirements and questionnaires.
- Working drawings, 3D models and other necessary documents for manufacturing KSO-2 at your facility. If you do not plan to fabricate parts and subassemblies in-house, we will place them with partner shops; you will perform overall assembly and installation.
- All documents can be adapted to your project and manufacturing capabilities (tooling, sheet-metal processing, bending, powder coating, etc.).
- If your substation contains equipment from another manufacturer, we will prepare compatible add-on designs, including adapter joints and transition panels.

Why work with us:

- No need to maintain a large team of senior engineers: you receive a complete document set that a mid-level engineer can confidently work with.
- No need for lengthy pilot builds: our library of proven solutions lets you launch serial batches immediately after design approval.
- With our documentation you will get consulting on all manufacturing nuances, including protection IED setup, interlock verification, FAT/SAT preparation and O&M documentation.

For additional information on KSO-2U please contact: inbox@proekt-energo.com

…as practice shows, an error made at the design stage can multiply fabrication costs by ten and lifecycle costs by a hundred.

PDF - Download KSO-2U technical information