HJ-MCS-12 Series Metal-Clad Switchgear
Up to 12kV / 4000A / 50kA
The HJ-MCS-12 Series is a highly reliable 12kV air-insulated, fully metal-clad withdrawable switchgear designed for 3-phase AC 50/60Hz power systems. Engineered to strict IEC standards, it is the ultimate solution for power receiving, distribution, and comprehensive grid protection.
Ideal for High-Demand Scenarios:
- ✓ Power Plants & Utility Substations
- ✓ Heavy Industries, Mining & Petrochemical
- ✓ Commercial Real Estate & Data Centers (IDC)
- ✓ Renewable Energy Grid Integration
1. Robust Al-Zn Modular Enclosure
The entire cabinet is constructed from premium aluminum-zinc coated steel sheets. Processed via high-precision CNC multi-folding technology and assembled with rivet nuts, it offers exceptional mechanical strength, reduced weight, and superior corrosion resistance compared to traditional welded steel.
2. Seamless Withdrawable Handcart
Engineered for perfect synchronization. The VCB handcart aligns perfectly with the cabinet structure. The high-precision track design ensures extremely smooth push-in/pull-out operations, guaranteeing 100% interchangeability of identical handcarts to minimize maintenance downtime.
3. Strict "5-Prevention" Mechanical Interlocks
Operator safety is guaranteed through a rigorous, foolproof mechanical interlocking system. It actively prevents critical misoperations, such as moving the handcart under load, closing the earthing switch when energized, or improperly accessing live compartments.
4. Compartmentalized Arc Protection
The switchgear features an IP4X external enclosure rating. Each functional zone (Busbar, VCB, Cable, LV Control) is completely isolated by grounded metal partitions with independent pressure-relief flaps, strictly containing any potential internal arc faults.
Global Factory Acceptance & Turnkey Support
Every HJ-MCS-12 unit undergoes rigorous routine testing aligned with strict international standards before dispatch. We proudly support Remote Video FAT (Factory Acceptance Test) for our global EPC clients, ensuring total transparency.
To support local manufacturing and joint ventures, this series is fully available in CBU (Completely Built Unit), SKD (Semi-Knocked Down), or CKD (Completely Knocked Down) delivery formats.
Technical Specifications
(Note: Parameters cover standard configurations. Custom ratings available for specific EPC requirements.)
| System & Power Parameters | |
| Rated Voltage (Ur) | 12 kV |
|---|---|
| Rated Frequency (fr) | 50 Hz / 60 Hz |
| Rated Main Busbar Current | 630A / 1250A / 1600A / 2000A / 2500A / 3150A (Custom up to 4000A with forced cooling) |
| Withstand & Protection Ratings | |
| Short-Circuit Breaking Current | 20kA / 25kA / 31.5kA / 40kA (Custom up to 50kA) |
| Short-Time Withstand Current (4s) | 20kA / 25kA / 31.5kA / 40kA (Custom up to 50kA) |
| Peak Withstand Current (Ip) | 50kA / 63kA / 80kA / 100kA (Custom up to 125kA) |
| Power Frequency Withstand | 42 kV (1 min) |
| Lightning Impulse Withstand (BIL) | 75 kV |
| Protection Degree | Enclosure IP4X / Compartment IP2X (Custom IP5X available) |
Operating Environment
- Ambient Temperature: -15°C to +40°C (Anti-condensation heaters optional).
- Altitude: Standard ≤ 1000m (High-altitude custom designs up to 4000m+ available).
- Relative Humidity: Daily average ≤ 95%, Monthly average ≤ 90%.
- Seismic Intensity: Withstands up to Magnitude 8.
Related products
HJ-MCS-40 Series Metal-Clad Switchgear
Up to 40.5kV / 2500A / 31.5kA
The HJ-MCS-40 Series is a premium 40.5kV air-insulated, fully metal-clad withdrawable switchgear designed for 3-phase AC 50/60Hz power systems. Engineered for maximum reliability, it serves as the critical node for power receiving, distribution, and comprehensive grid protection. Ideal for High-Demand Scenarios:- ✓ Major Power Grid Substations & Utility Networks
- ✓ Heavy Metallurgy, Mining & Petrochemical Facilities
- ✓ Renewable Energy (Wind/Solar) Step-Up Substations
- ✓ Large-Scale Infrastructure & Railway Power Systems