Indoor metal-clad withdrawable switchgear for Power plants-3.6kV to 24kV
Key attributes
| Brand | ROCKWILL |
| Model NO. | Indoor metal-clad withdrawable switchgear for Power plants-3.6kV to 24kV |
| Rated voltage | 12kV |
| Rated frequency | 50/60Hz |
| Series | KYN28 |
Description
The KYN28 indoor metal-clad withdrawable switchgear(hereinafter short as switchgear) is a complete power distribution device for 3.6-24kV,3-phase AC 50Hz,single-bus and single-bus sectionalized system. It is mainly used for power transmission of small and medium-sized generators in power plants; power receiving, transmission for substations in power distribution and power system of factories, mines and enterprises, and starting of large high-voltage motor, etc,so as to control, protect and monitor the system.
The switchgear meets IEC 62271-200,GB/T 3906-2020.In addition to be used with domestic VS1 vacuum circuit breaker, it can also be used with VD4 from ABB,3AH3 from Siemens,domestic ZN65A,and VB2 from GE, etc,it truly is a power distribution device with good performance.
Product Showcase Video
Key Features
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Centralized (Draw-out) Layout
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Armored Compartmentalization
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Standardized Modular Design
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Excellent performance
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Flexible Maintenance
Technology parameters
| No. | Item | Unit | Parameter |
|---|---|---|---|
| 1 | Rated voltage | kV | 3.6/7.2/12/24 |
| 2 | Rated frequency | Hz | 50/60 |
| 3 | Rated current | A | 630,1250,1600,2000,2500,3150,4000 |
| 4 | Branch busbar Rated current | A | 630,1250,1600,2000,2500,3150,4000 |
| 5 | Main busbar Rated current | A | 630,1250,1600,2000,2500,3150,4000 |
| 6 | 1min Power frequency withstand voltage—phase-to-phase
1min Power frequency withstand voltage— Across open contacts |
kV
kV |
18/20/42/50 20/28/48/60 |
| 7 |
Lightning impulse withstand voltage —phase-to-phase Lightning impulse withstand voltage—Across open contacts |
kV |
40/60/75/125 46/70/85/145 |
| 8 | Rated short circuit breaking current (peak) | kA | 40/50/63/80/100 |
| 9 | Short time withstand current(4s) | kA | 20/25/31.5/40 |
Device structure
Photos of frontal view
Environmental Parameter
| Ambient air temperature — upper limit | +40 °C |
| Ambient air temperature — 24 h average | +35 °C |
| Ambient air temperature — lower limit | –25 °C |
| Altitude above sea level | ≤ 1 000 m |
| Relative humidity — 24 h average | ≤ 95% (at +40 °C) |
| Relative humidity — monthly average | ≤ 90% |
| Water vapour pressure — 24 h average | ≤ 2.2 kPa |
| Water vapour pressure — monthly average | ≤ 1.8 kPa |
| Solar radiation | ≤ 1 000 W/m² |
| Wind speed (outdoor) | ≤ 34 m/s (mild) |
| Pollution degree (indoor) | Class II |
| SF₆ gas decomposition products | ≤ 1 μL/L (SO₂F₂) |
Solutions for switchgear
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KYN28 Metal-Clad Switchgear Distribution Upgrade Solution for South African Mining AreasIn typical industrial mining areas in South Africa, the power distribution system is a core safeguard for production continuity and operational safety. However, under complex operating conditions such as high dust levels, large temperature differentials, and strong impact loads, traditional distribution solutions often struggle to meet the requirements for long-term stable operation.This project addresses the distribution system upgrade and renovation of a core mining area in South Africa. It ad -
Intelligent Maintenance Services and Sustainable Solutions for 12kV Medium Voltage SwitchgearⅠ. Key Points for Medium Voltage Switchgear System Architecture Upgrade Integration of Eco-Friendly Insulation Technology (for Medium Voltage Switchgear) SF₆-Free Solutions: Adoption of dry air or AirPlus® blended gas to replace traditional SF₆ (GWP <1) in Medium Voltage Switchgear, supporting eco-gas switching throughout the equipment lifecycle (e.g., ABB PrimeGear ZX0 Switchgear). Compact Design: Modular structure reduces footprint by 25%, ideal for space-sensitive applications like comm
Reference Projects for switchgear
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South Africa Mining Site KYN28 Switchgear Distribution Upgrade Equipment Selection and Engineering Practice in a High-Dust and Heavy Impact Load Environment1. Project Overview and Application ChallengesGeographic environment: The project is located in a typical industrial mining environment in South Africa. The local grid infrastructure is relatively aged, and the site is characterized by heavy dust and large diurnal temperature variations, placing stringent demands on the ingress protection and insulation performance of electrical equipment.Application conditions and load characteristics: As the core power center of the site, this facility carries
Documentation Resource Library switchgear
FAQ for switchgear
Yes. Features excellent performance through advanced design, high-quality materials, and proven reliability in diverse applications.
Yes. The withdrawable design enables flexible maintenance — circuit breaker units can be withdrawn for inspection or replacement without de-energizing the entire system.
VS1 (domestic), ABB VD4, Siemens 3AH3, ZN65A (domestic), GE VB2 — freely exchangeable drawers.
