Core Advantages of KYN28-12 12kV Switchgear
12kV KYN28-12 Metal Clad Withdrawable Indoor Medium Voltage Switchgear
IEC Standard | Air Insulated | Indoor Use | OEM Custom | 630A–4000A
Our 12kV KYN28-12 metal clad withdrawable switchgear is air insulated medium voltage metal enclosed panel, designed for 50Hz three-phase power systems to receive, distribute electric power and realize circuit control, protection & monitoring. Two models KYN28-12 and upgraded KYN28A-12 are available for power plant, substation, factory and new energy distribution projects.
Metal Clad Withdrawable Handcart Structure
Vacuum breaker trolley can be pulled out for easy maintenance, greatly shorten power out time.
Wide Rated Current Range
630A-4000A rated current, matched for main incoming, feeder and transformer outlet circuits.
High Short-Circuit Withstand Capacity
Support 10KA-50KA 4s short time withstand current, stable operation under fault impact.
Strict Multi-Layer Safety Interlock
Complete five-prevention interlock design to avoid misoperation and protect operators.
Wide Applicable Environment
Standard model adapts altitude ≤2500m; KYN28A-12 for altitude below 1000m, etc; condition customization for high humidity coastal area.
Full IEC & GB Standard Compliance
Manufactured per GB3906, GB/T11022, IEC60298, all units pass full factory high voltage tests before shipment.
Model Introduction
KYN28-12 (G2S1) Metal Clad Switchgear
Model Code Explanation
K – Metal Clad
Y – Withdrawable
N – Indoor
28 – Design No.
12 – Rated Voltage
KYN28A-12 (2) Vacuum Circuit Breaker Cabinet
Equipped with built-in vacuum circuit breaker
K-Metal Clad
Y-Withdrawable
N-Indoor
28A-Upgraded Type
12-12kV
Z-VCB Inside
Normal Operating Conditions
Standard Working Environment
– Ambient temperature: -15℃ ~ +40℃
– Daily average relative humidity ≤95%, monthly ≤90%
-Altitude: KYN28-12 ≤2500m; KYN28A-12 ≤1000m
-No corrosive, flammable gas, no severe vibration
Special Custom Environment Solutions
– Altitude over 1000/2500m: Reinforced insulation customization
– High temperature over 40℃: De-rated current design
-High humidity & coastal area: Anti-salt fog + anti-condensation heater
-Special temperature range: Customized thermal structure upon negotiation
Core Advantages of KYN28-12 12kV Switchgear
Main Technical Parameters
Basic Electrical Specification
| Item | Unit | Standard Data |
|---|---|---|
| Rated Voltage | kV | 3.6 / 7.2 / 12 |
| Rated Frequency | Hz | 50 |
| Rated Current of Switchgear | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 |
| Rated Short-Time Withstand Current (4s) | kA | 16, 20, 25, 31.5, 40, 50 |
| Rated Peak Withstand Current | kA | 40, 50, 63, 80, 100, 125 |
| Rated Short-Circuit Breaking Current | kA | 16, 20, 25, 31.5, 40, 50 |
| Rated Short-Circuit Making Current | kA | 40, 50, 63, 80, 100, 125 |
Insulation Level & Protection Grade
| Test Item | Position | kV |
|---|---|---|
| 1min Power Frequency Withstand Voltage | Phase-to-Earth / Inter-phase | 24, 32, 42 |
| 1min Power Frequency Withstand Voltage | Break Gap | 24, 32, 48 |
| Lightning Impulse Withstand Voltage | Phase-to-Earth / Inter-phase | 40, 60, 75 |
| Lightning Impulse Withstand Voltage | Break Gap | 46, 70, 85 |
| Protection Class | Cabinet Shell | IP4X; IP2X when breaker door open |
Standards Compliance & Reference
- IEC standard for 12kV metal clad medium voltage switchgear
- GB/T11022 medium voltage switchgear standard
- Power grid medium voltage distribution equipment introduction
OEM Custom Service for KYN28-12 MV Switch Cabinet
Factory Production & Testing
Assembly line
Finished KYN28 switchgear stock warehouse
Full Pre-Shipment Test List
- Partial discharge test
- Power frequency voltage withstand test
- Temperature rise test
- Mechanical operation endurance test
- Short-circuit withstand simulation test
- Overall routine inspection
Support full test reports & factory inspection videos for all OEM orders.
Application Scenarios of KYN28-12 12kV Switchgear
Application Scenarios
KYN28-12 Switchgear For Urban Substation
Main incoming & feeder cabinet for municipal power distribution network, compact layout for indoor power room.
Medium Voltage Panel For Power Plant
Used for generator power output, stable control and fault protection for power generation system.
MV Withdrawable Cabinet For Solar & Wind Farm
Matched energy storage system, reliable power transmission for large new energy projects.
Industrial Factory Distribution Switchgear
For mining, chemical, manufacturing plant, support heavy load high current transmission.
OEM Custom Service
One-Stop OEM Custom KYN28-12 Medium Voltage Switchgear
Cabinet size, color, anti-salt fog surface treatment for coastal projects
Manual or motorized vacuum circuit breaker trolley optional
Cabinet size, color, anti-salt fog surface treatment for coastal projects
Private brand logo, nameplate, control secondary circuit customization
Special insulation & anti-condensation device for high altitude & humid environment
Need Custom 12kV KYN28-12 Medium Voltage Switchgear For Your Power Project?
Our OEM medium voltage switchgear factory supplies standard & customized KYN28 withdrawable cabinet for substation, power plant, solar and industrial projects. Send your project parameters to get free quotation and technical drawings.
