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
1. Superior Operational Safety (LSC2B)
Designed with completely grounded metal partitions separating the busbar, circuit breaker, and cable compartments. This LSC2B-PM architecture ensures maximum safety for operators during maintenance, guaranteeing zero live-part exposure.
2. Intelligent Mechanical Interlocks
Features an infallible "5-prevention" mechanical interlock system. The VCB truck can only be racked in/out when the breaker is open, and the grounding switch can only be operated when the truck is in the test position, virtually eliminating human operational errors.
3. Internal Arc Withstand (IAC AFLR)
Equipped with specialized pressure relief flaps on top of each high-voltage compartment. In the rare event of an internal arc fault, pressurized hot gases are instantly vented upwards, protecting personnel on all sides (AFLR) and preventing structural rupture.
4. Optimized CAPEX for EPCs
Manufactured within our mature ecosystem, the HJ-MCS-40 delivers Tier-1 performance and IEC compliance at a highly competitive price point, drastically optimizing initial capital expenditure for massive infrastructure and utility projects.
Global Factory Acceptance & Turnkey Support
Every HJ-MCS-40 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 voltage and current ratings are available based on specific global grid requirements.)
| System & Power Parameters | |
| Rated Voltage (Ur) | 36 kV / 40.5 kV |
|---|---|
| Rated Frequency (fr) | 50 Hz / 60 Hz |
| Rated Main Busbar Current (Ir) | 1250 A / 2000 A / 2500 A / 3150 A |
| Withstand & Protection Ratings | |
| Short-Time Withstand Current (Ik) | 25 kA / 31.5 kA (3s) |
| Peak Withstand Current (Ip) | 63 kA / 80 kA |
| Power Frequency Withstand Voltage | 95 kV (1 min) |
| Lightning Impulse Withstand (BIL) | 185 kV / 200 kV |
| Internal Arc Classification (IAC) | AFLR 31.5 kA / 1s |
| Loss of Service Continuity | LSC2B - PM |
| Protection Degree | Enclosure IP4X (Doors Closed) / Compartment IP2X (Doors Open) |
| Applicable Standards | IEC 62271-1, IEC 62271-200, GB/T 3906 |
Operating Environment
- Ambient Temperature: -15°C to +40°C (Maximum daily average ≤ 35°C).
- Altitude: Standard ≤ 1000m (Derating formulas applied for high-altitude >1000m installations).
- Relative Humidity: Daily average relative humidity ≤ 95%, Monthly average ≤ 90%.
- Seismic Intensity: Up to Magnitude 8 (Custom bracing available for high-seismic zones).
Related products
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