Smart Indoor Metal-Clad Withdrawable Switchgear
Power-frequency Withstand (50Hz, 1 min): 42kV
Lightning Impulse Withstand (1.2/50µs): 75kV
Rated Current (Busbar): 630-4000A
Rated Current (Breaker): 630-4000A
Rated Current (Contactor): 400A
Enclosure Protection: IP4X
Compartment Protection: IP2X
Zhejiang Tianrun Electric Co., Ltd. is one of the leading manufacturers and suppliers of smart indoor metal-clad withdrawable switchgear in China. We are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk advanced smart indoor metal-clad withdrawable switchgear from our factory. Also, quotation is available.
Product Overview
The MVnex product family covers multiple series to meet MVnex is Schneider Authorizes Tianrun Electric's next-generation indoor metal-clad switchgear, building on over 50 years of MV switchgear design and manufacturing experience (since 1958). It provides integrated protection, monitoring, and control solutions for medium-voltage distribution networks.
MVnex features a withdrawable (hand-truck) metal-clad construction with four fully independent compartments: Low Voltage Compartment, Circuit Breaker Compartment, Busbar Compartment, and Cable Compartment. Compartment separation achieves IP2X, with an overall enclosure rating of IP4X, ensuring operator safety and power supply continuity.
It diverse project requirements:
- MVnex 12kV (Standard): Up to 4000A, 40kA - covers full project needs across industries
- MVnex 24kV: For electronics industry and high-altitude 12kV projects
- MVnex 550 (Compact): 550mm cabinet width, 40%+ footprint reduction vs traditional cabinets
- MVnex 500 (Ultra-compact): 500mm cabinet width, 60% footprint reduction, wall-mountable
- Smart MVnex (Intelligent): Integrated online monitoring, proactive O&M unit, and cloud platform for digital maintenance
Product Advantages
Safety & Reliability
• Complete "Five-Interlock" protection: prevents incorrect breaker operation, live insertion/withdrawal, grounding switch misoperation, entry into live compartments, and grounding switch closure under voltage.
• Metal-clad construction: 4 independent compartments with IP2X inter-compartment protection
• Arc pressure relief ducts on each compartment for effective overpressure gas release
• Enclosure protection: IP4X (exceeds industry standards)
• Seismic rating: AG3 (8-degree seismic zone)
• Earthing switch: 40kA/4s; Internal arc rating: 40kA 1s
Intelligent O&M (Smart MVnex)
• Temperature Online Monitoring (TH110): No external power, wireless signal, long-life maintenance-free.
• Arc Flash Protection (VAMP): Simple principle, fast & reliable operation, fault location.
• Microprocessor Protection (Easergy P3): 8 programmable protection profiles, embedded web, mobile app.
• Proactive O&M Smart Unit: Asset management, real-time data, alarm management, protection coordination verification.
• "TeleEye" Cloud Platform: O&M management, work orders, alarms, asset management, mobile O&M.
High-Performance Configuration
• HVX Solid-Pole Vacuum Circuit Breaker: Solid encapsulated pole technology - components unaffected by environmental conditions.
• CVX Solid-Pole Vacuum Contactor: For 400A circuits, frequent operation applications.
• Rated current range: 630A~4000A; Short-time withstand: 25/31.5/40kA
• Main busbar current up to 400.0A for high-capacity distribution.
Materials & Workmanship
• Enclosure: Aluzinc and electro-galvanized steel sheets for superior corrosion resistance
• High-temperature epoxy powder coating
• Flame-retardant insulating components
• Front panel mimic diagram for intuitive operation
• Motorized truck: gear-driven, 5000-cycle lifespan, manual priority, closing interlock
Flexibility & Compactness
• Cabinet widths: 650mm / 800mm / 1000mm
• MVnex 550: Only 550mm wide, 40%+ footprint reduction
• MVnex 500: Only 500mm wide, 60% footprint reduction, wall-mountable with 1m front access
• Mixed cabinet widths can be freely combined and expanded
Technical Specifications
MVnex 12kV Electrical Parameters
|
Parameter |
Unit |
Value |
Note |
|
Rated Voltage |
kV (rms) |
12 |
|
|
Power-frequency Withstand (50Hz, 1 min) |
kV (rms) |
42 |
Across open: 48kV |
|
Lightning Impulse Withstand (1.2/50µs) |
kV (peak) |
75 |
Across open: 85kV |
|
Rated Current (Busbar) |
A (rms) |
630~4000 |
|
|
Rated Current (Breaker) |
A (rms) |
630~4000 |
|
|
Rated Current (Contactor) |
A (rms) |
400 |
|
|
Rated Short-time Withstand (4s) |
kA (rms) |
25 / 31.5 / 40 |
|
|
Rated Peak Withstand Current |
kA (peak) |
63 / 80 / 100 |
|
|
Enclosure Protection |
IP |
IP4X |
IEC 60529 |
|
Compartment Protection |
IP |
IP2X |
MVnex 12kV Dimensions
|
Rating |
Width (mm) |
Height (mm) |
Depth - Top Cable (mm) |
Depth - Bottom Cable (mm) |
|
400A (Contactor) |
650 |
2250 |
1600 |
1400 |
|
630/1250A-31.5kA |
650 |
2250 |
1600 |
1400 |
|
630/2000A |
800 |
2250 |
1600 |
1400 |
|
2500/3150A |
1000 |
2250 |
1600 |
1400 |
|
4000A |
1000 |
2250 |
1600 |
1600 |
MVnex 24kV Parameters
|
Parameter |
Unit |
Value |
Note |
|
Rated Voltage |
kV (rms) |
24 |
|
|
Power-frequency Withstand |
kV (rms) |
65 |
|
|
Lightning Impulse Withstand |
kV (peak) |
125 |
|
|
Rated Current |
A (rms) |
630~1250 / 2500 |
|
|
Short-time Withstand (4s) |
kA (rms) |
25 / 31.5 |
|
|
Peak Withstand Current |
kA (peak) |
63 / 80 |
|
|
Enclosure Protection |
IP |
IP4X |
MVnex 550 (Compact) Parameters
|
Parameter |
Unit |
Value |
Note |
|
Rated Voltage |
kV |
12 |
|
|
Rated Current |
A |
≤ 1250 |
|
|
Short-time Withstand (4s) |
kA |
≤ 31.5 |
|
|
Peak Withstand Current |
kA |
≤ 80 |
|
|
Cabinet Width |
mm |
550 |
|
|
Cabinet Depth |
mm |
1400 |
|
|
Cabinet Height |
mm |
2250 |
|
|
Approx. Weight |
kg |
400~700 |
MVnex 500 (Ultra-compact) Parameters
|
Parameter |
Unit |
Value |
Note |
|
Rated Voltage |
kV |
12 |
|
|
Rated Current |
A |
≤ 1250 |
|
|
Short-time Withstand (4s) |
kA |
≤ 31.5 |
|
|
Peak Withstand Current |
kA |
≤ 80 |
|
|
Cabinet Width |
mm |
500 |
|
|
Cabinet Depth |
mm |
1400 |
|
|
Cabinet Height |
mm |
2250 |
|
|
Approx. Weight |
kg |
400~700 |
Key Component Specifications
- Vacuum Circuit Breaker: HVX solid-pole type (Schneider Electric)
- Vacuum Contactor: CVX solid-pole type
- Current Transformer: LZZBJ9-12 (12kV) / LZZBJ9-24 (24kV)
- Voltage Transformer: JDZXR-10C (12kV) / JDZX15-20 (24kV)
- Earthing Switch: MGES-12/MGES-24 (with short-circuit making capacity)
- Surge Arrester: YH5WZ-17/45 (12kV) / YH5WZ-26-66Q (24kV)
- Protection Relay: Easergy P3 Series
- Arc Flash Protection: VAMP Series
- Temperature Monitoring: TH110 wireless system
- Motorized Truck: 5000-cycle lifespan, manual priority, dual overload protection
Applications
Target Industries
MVnex switchgear is widely applicable across the following industries:
|
Industry |
Application Scenario |
Recommended Model |
|
Building & Commercial |
Commercial complexes, office towers, hotels |
MVnex 12kV / MVnex 550 |
|
Data Centers |
Cloud computing centers, IDC rooms |
Smart MVnex / MVnex 12kV |
|
Power Utilities |
Substations, switching stations, distribution rooms |
MVnex 12kV / MVnex 24kV |
|
Oil, Petrochemical & Gas |
Refineries, storage & distribution stations |
MVnex 12kV |
|
Light Industry & Electronics |
Electronics factories, pharma, food processing |
MVnex 550 / MVnex 500 |
|
Infrastructure |
Airports, railways, metro, tunnels |
MVnex 12kV / MVnex 500 |
|
Renewable Energy |
Wind farms, photovoltaic plants |
MVnex 12kV / MVnex 24kV |
Key Project References
- Qingdao New Airport 110kV Substation
- Changsha IFS (International Finance Square)
- Beijing Xiangyun Ruiwei Cloud Computing Center
- Sunshine Insurance Group Tongzhou Data Center
- Shanghai Hailun Road Financial Street Project
- Shenyang China Resources Land Plaza
- Nanning International Convention & Exhibition Center
- Beijing Cultural Silicon Valley Data Center
- Beijing Huitian Network Technology Data Center
- China Telecom Xiamen Straits Communication Hub
- Beijing Fengtai Fangzhuang Smart Digital Substation (Smart MVnex)
- Shanghai West Bund Media Port
Typical Primary Schemes
MVnex offers extensive primary wiring schemes covering the following cabinet types:
- Breaker Incoming/Outgoing Feeder: 630A~4000A, 2 or 3 CTs, optional surge arrester and PT
- Contactor Feeder: 400A, for frequent switching applications
- Isolation Truck: 630A~1250A, with isolation trolley
- Bus Tie (Bus Coupler): 630A~4000A, with HVX breaker + CTs
- Riser (Rising Main): 630A~4000A, with isolation trolley or PT riser
- Metering: CT + PT combination, with surge arresters
- Voltage Transformer (PT): 2 or 3 PTs, optional surge arresters
- Auxiliary Transformer: with load-break switch or fuse-trolley + transformer
- Overhead Incoming Feeder: for overhead line entry applications
Operating & Environmental Conditions
|
Parameter |
Requirement |
Note |
|
Installation |
Indoor |
|
|
Minimum Ambient Temperature |
≥ -15°C |
|
|
Maximum Ambient Temperature |
≤ +40°C |
|
|
24h Average Temperature |
≤ +35°C |
|
|
Altitude |
≤ 1000m |
Above 1000m needs special design |
|
Relative Humidity (daily avg.) |
≤ 95% |
|
|
Relative Humidity (monthly avg.) |
≤ 90% |
Special Service Conditions
The following conditions require prior agreement with the manufacturer:
- Altitude above 1000m: Insulation distance derating requires custom design
- Elevated Ambient Temperature: Current derating or auxiliary cooling required
- Condensation Risk: Preventive measures required (heaters, ventilation, dehumidifiers)
- Corrosive Environments: Must avoid risk of corrosion or other damage
- Heaters and temperature/humidity controllers recommended for high-humidity areas
- Increased maintenance frequency for high-dust environments
Installation & Layout Requirements
- Maintain maintenance access between cabinet rear panel and wall
- Maintain clearance between cabinet sides and walls
- Double-row face-to-face layout: minimum 2500mm between rows
- Foundation: steel channel (recommended #5 channel), level tolerance ≤ 1mm/m
- Foundation frame top approximately 3~5mm above final floor level
- Embed anchor plates every 1~1.5m along the frame longitudinal direction
Applicable Standards
- IEC 60298 / IEC 60694 - MV switchgear & control gear assemblies
- IEC 60529 - Degrees of protection (IP coding)
- GB 3906 - AC metal-enclosed switchgear (China national standard)
- GB 11022 - Common technical requirements for HV switchgear
- GB 1984 - HV AC circuit breakers
- GB/T 14808 - HV AC contactors and contactor-based motor starters
- DL 404 - Electric power industry standard (China)
FAQ
Q: What is MVnex?
A: Next-generation indoor metal-clad withdrawable MV switchgear built under Schneider Electric authorization, based on over 50 years (since 1958) of Schneider MV switchgear design experience, integrating protection, monitoring and control.
Q: What series are available?
A: 5 series: MVnex 12kV standard (up to 4000A/40kA), MVnex 24kV, MVnex 550 compact (550mm wide, 40%+ footprint reduction), MVnex 500 ultra-compact (500mm wide, 60% reduction, wall-mountable), Smart MVnex (online monitoring + cloud platform).
Q: How safe is it?
A: Complete five-interlock protection, metal-clad 4 independent compartments (IP2X), enclosure IP4X, arc pressure relief ducts on each compartment, internal arc rating 40kA/1s, earthing switch 40kA/4s, seismic rating AG3 (8-degree zone).
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