Kyn28 Switchgear 11kV

The Usune Kyn28 Switchgear 11kV is suitable for 3.6kV–12kV, 50Hz three-phase AC systems, enabling power reception, distribution, control, protection, and monitoring. It supports single busbar, single busbar sectionalization, and double busbar connection methods, making it a key power distribution device in power systems. As a core product of a professional Chinese power equipment supplier, it has become a globally trusted medium-voltage power distribution solution thanks to its factory manufacturing capabilities and stable quality.

Low voltage switchgear

Medium voltage switchgear

Core Standards Compliance

The Usune Kyn28 Switchgear 11kV strictly adheres to international and domestic standards to ensure product reliability, safety, and interoperability:

1. IEC 60298 / IEC 62271-200: AC Metal-Enclosed Switchgear with Rated Voltages from 1kV to 52kV
2. GB 3906-2006: 3–35kV AC Metal-Enclosed Switchgear and Control Cabinets
3. DL/T 404-2007: Technical Specification for Indoor AC High-Voltage Switchgear
4. GB/T 11022: General Specification for High-Voltage Switchgear

Structural and Design Features

The Kyn28 Switchgear 11kV enclosure adopts a modular bolted structure made of high-quality galvanized/cold-rolled steel plate, divided into five independent grounding compartments by metal partitions, effectively preventing fault propagation.

1. Circuit Breaker Compartment: Equipped with a removable vacuum circuit breaker trolley with mechanical interlocking
2. Busbar Compartment: Installs main busbars and branch busbars, independently isolated.
3. Cable Compartment: Used for cable connections, containing transformers, grounding switches, surge arresters, etc.
4. Control Instrument Compartment: Installs relays, instruments, protection devices, and secondary circuits.
5. Pressure Relief Channel: Equipped with a pressure relief device at the top, allowing safe release of arc pressure in case of a fault.

Core Advantages

1. Removable Handcart Design: Circuit breaker and PT handcarts are interchangeable, allowing for quick maintenance and replacement without de-energizing the entire busbar section.
2. Comprehensive Five-Protection Interlocking: Prevents accidental circuit breaker opening/closing, prevents pushing/pulling the handcart under load, prevents closing the grounding switch while energized, prevents energizing when the grounding switch is closed, and prevents accidental entry into energized compartments.
3. Compact Structure: Front-facing operation and maintenance, saving installation space.
4. High environmental adaptability: Built-in condensation heater, suitable for humid environments.

Main application types:

1. Incoming line cabinet (receiving power)
2. Outgoing line cabinet (distributing power to feeders/motors)
3. Voltage transformer and voltage measurement cabinet
4. Metering cabinet (with energy meter)
5. Busbar section cabinet
6. Isolation cabinet

Environmental conditions

- Ambient temperature: -15℃ ~ +40℃
- Daily average relative humidity ≤95%, monthly average ≤90%
- No explosive, corrosive gases or conductive dust, no severe vibration
- Indoor installation only

Main technical parameters

Actual application case

Urban commercial complex power distribution project. A 50-story commercial complex (office + commercial + entertainment) in East China uses 18 Usune Kyn28 Switchgear 11kV units, including incoming lines, outgoing lines, PTs, metering, section cabinets, and isolation cabinets, with redundant power supply via dual busbars.

After two years of operation, it achieved 99.98% power supply reliability with no unplanned power outages. The switchgear can be quickly replaced, significantly reducing maintenance time. The compact cabinet saves space in the distribution room, and a condensation heater ensures stable operation in humid environments.

Product External Dimension

Project Reference

Cas-space Rocket Launch Project

Test Report

FAQs

Q1: What are the main differences between the Usune KYN28 11kV and traditional fixed switchgear?

A: The core difference is the withdrawable switchgear structure. Circuit breakers can be independently withdrawn and interchanged, eliminating the need for a complete power outage during maintenance. This results in higher safety and maintenance efficiency, and the independent compartment effectively limits the fault range.

Q2: Can the Kyn28 Switchgear 11kV be used in high-altitude or particularly humid environments?

A: Yes. As a professional manufacturer, Usune offers high-altitude derating design, enhanced insulation and corrosion protection, and a built-in heater to ensure reliable operation in humid environments.

Q3: What about product warranty and after-sales service?

A: The whole machine comes with a 12-month warranty, a global technical team that responds 24 hours a day, and fast on-site service available in core areas. We also provide long-term maintenance and technical training.