Kyn28 Medium Voltage Switchgear

Target Users and Compliance

This platform caters to EPC contractors, electrical wholesalers, substations, industrial facilities, and infrastructure developments seeking a versatile indoor medium-voltage distribution solution. Usune’s operations are governed by ISO 9001, ISO 14001, and ISO 45001 frameworks. Manufacturing aligns with pertinent IEC and GB directives, and CE marking is procurable for qualifying regions.

Specification Methodology

Choosing appropriate medium-voltage switchgear begins with analyzing the electrical network itself. Pre-order engineering typically involves verifying system voltage, frequency, peak load current, short-circuit magnitude, feeder tally, protective needs, cabling scheme, and ambient installation factors. Usune evaluates these project-specific details to propose an optimized configuration, avoiding generic specifications. This tailored selection process is vital for substations, factories, and power infrastructure where multiple medium-voltage circuits operate concurrently.

Technical Ratings and Performance

Standard assemblies accommodate medium-voltage levels from 3.6kV to 12kV, with continuous current capacities spanning 630A to 3150A. Short-circuit withstand capabilities are offered in tiers—25kA, 31.5kA, 40kA, and 50kA—with the selection dictated by the network’s calculated fault current rather than routine load alone. Aligning rated current and short-circuit strength with upstream and downstream apparatus ensures cohesive system operation.

System Architecture and Coordination

A holistic medium-voltage distribution array rarely relies on a single cabinet type; incoming feeds, outgoing lines, transformers, metering, voltage sensing, and bus connections each demand distinct functions. The Kyn28 Medium Voltage Switchgear can be assembled to incorporate incoming, outgoing, PT, metering, bus sectionalizer, and isolation units within a unified electrical network. This flexibility ensures the physical lineup directly mirrors the approved single-line diagram.

Protective Integration

Medium-voltage safeguarding requires a system-wide perspective, ensuring harmony among the switchgear, circuit breaker, relays, transformers, cables, and upstream devices. The Kyn28 Medium Voltage Switchgear supports integration of specified protection and control elements. A vacuum circuit breaker handles primary switching, while the associated relay and control scheme are customized per the electrical design. Usune collaborates with clients to synchronize cabinet configuration with protection documentation, a critical need for EPC undertakings.

Mechanical Structure and Layout

The equipment features a metal-clad enclosure with segregated zones for primary components, busbars, cable terminations, and secondary controls. This internal zoning establishes a clear installation framework and enables the entire lineup to harmonize with cable paths, control wiring, operational clearance, and room dimensions. For multi-cabinet projects, the arrangement is driven by circuit count and functional demands rather than treating each bay as a standalone product.

Site Preparation and Environmental Limits

Prior to ordering, the electrical room’s conditions must be assessed, including available footprint, cable entry orientation, service clearance, temperature, humidity, altitude, ventilation, and equipment handling routes. The standard Kyn28 Medium Voltage Switchgear is designated for indoor use, operating within -15°C to +40°C, with daily average relative humidity capped at 95% and monthly average at 90%. Special environments or high-altitude sites necessitate early consultation with Usune to adjust electrical and insulation parameters.

Core Functional Modules

Incoming bays link the medium-voltage source to the busbar system, with current rating, protection, measurement, and cabling tailored to the upstream network. Outgoing bays deliver power to transformers, motors, or process loads, sized according to the project’s load schedule. PT and metering bays facilitate voltage transformation and energy monitoring. Bus sectionalizer arrangements allow managed coupling or separation of bus sections, enhancing network flexibility.

Industry Deployments

Within substations, the Kyn28 Medium Voltage Switchgear is organized around incoming sources, transformer feeds, outgoing circuits, and bus segmentation per the single-line diagram. Manufacturing plants utilize it to supply production lines, motors, compressors, and pumps with varied feeder ratings. Mining operations benefit from its ability to manage distributed heavy loads like ventilation and processing gear. Commercial high-rises and large buildings integrate it for structured power reception and multiple transformer feeds aligned with their electrical room constraints.

Technical Specifications

The final specification should be confirmed according to the project voltage, load current, fault level, protection scheme, cable arrangement, and installation environment.

Procurement Assistance and Lead Time

With over 14 years in electrical equipment manufacturing, Usune offers technical backing for project-driven medium-voltage procurements. Clients submit single-line diagrams, voltage/current/short-circuit specs, cabinet counts, functional needs, and site conditions; Usune then aids in technical validation and configuration. Standard setups typically require 15–20 days for production following confirmation and payment, though actual delivery varies with project complexity and order volume.

Product External Dimension

Cas-space Rocket Launch Project

The KYN28 series has been selected for deployment in the Cas-space Rocket Launch Project. Distinct from standard commercial properties or manufacturing plants, aerospace infrastructure typically houses numerous specialized electrical demands and ancillary systems distributed across various zones. As a result, medium-voltage distribution solutions must be harmonized with the site's comprehensive power architecture.

For this specific undertaking, the switchgear arrangement was regarded as a core component of the location's wider electrical distribution network, covering power reception, feeder distribution, protective measures, and electrical control necessities. This case exemplifies Usune's competence in contributing to specialized engineering assignments, wherein medium-voltage equipment must be synchronized with bespoke electrical demands rather than being provided as a universal standard cabinet.

Standards & Testing

Usune operates a holistic management framework that integrates quality assurance, production oversight, environmental compliance, and occupational health and safety throughout its manufacturing and inspection workflows.

The enterprise has secured ISO 9001, ISO 14001, and ISO 45001 credentials. Product designs adhere to pertinent IEC and GB specifications, while CE conformity is accessible for eligible model configurations.

Ahead of delivery, each piece of equipment is put through systematic inspections and functional tests that scrutinize key components, structural assembly, electrical terminations, and the completed unit. Documentation packages inclusive of technical datasheets and test certificates can be issued in accordance with individual project mandates.

FAQ

What information is required for selection?

The main information includes system voltage, frequency, rated current, short-circuit level, number of incoming and outgoing circuits, protection requirements, cable arrangement, and installation conditions.

What voltage ratings are available?

The provided configuration supports 3.6kV, 7.2kV, and 12kV systems. The final voltage rating should be confirmed according to the customer's electrical network.

Can Usune configure the lineup according to a single-line diagram?

Yes. Usune can review the customer's electrical diagram and configure the cabinet functions and ratings according to the project requirements.

Can the equipment be used in substations?

Yes. It can be configured for incoming power, transformer feeders, outgoing circuits, metering, voltage measurement, and busbar sectioning in indoor substation applications.

What standards does Usune follow?

Usune's products are designed according to applicable IEC and GB standards. The company operates under ISO 9001, ISO 14001, and ISO 45001 management systems, with CE certification available for applicable markets.

Can technical documents be provided?

Yes. Usune can provide technical specifications, test reports, product documentation, and other project-related documents according to customer requirements.

What is the normal production period?

For standard configurations, production is normally around 15–20 days after technical confirmation and payment. The actual schedule depends on configuration and quantity.

Request a Technical Proposal

If you are purchasing Kyn28 Medium Voltage Switchgear, provide your single-line diagram, system voltage, rated current, short-circuit level, cabinet quantity, feeder requirements, protection requirements, and installation conditions.

Usune can evaluate the electrical requirements and provide a suitable medium-voltage switchgear configuration for your project.