Your Leading Mining Switchgear Supplier
Trust In Grid Co., Ltd. is a professional transformer manufacturer, specializing in the design and production of power transformer, high-voltage switchgear, power distribution equipment, energy storage systems (ESS), magnetic wire, bushing and machining parts. Our power transformers are available in 500KV, 330KV, 220KV, and 110KV models, and are widely used in power utilities, renewable energy systems (solar and wind), industrial facilities, data centers, transportation infrastructure, and OEM applications.
Why Choose Us?
Production Capacity
With 6 factories covering 240,000 m², over 2,000 employees, and 200+ engineers, we support large-scale projects and long-term global supply with more than 30 years of export experience.
Advanced Equipment
We operate a complete set of in-house production equipment, including cutting, winding, CNC machining, vacuum drying, and testing systems, with over 450 machines ensuring stable quality and efficient output.
Quality Control
All products are manufactured and tested in compliance with IEC, IEEE, ANSI, CSA, UL/cUL, CE, and ISO 9001:2015 standards, ensuring reliable performance and smooth international approval.
OEM & ODM Capability
Our engineering team provides OEM/ODM support, including customized design and technical optimization, delivering tailored solutions for utility, industrial, and renewable energy projects.
Technical Specifications of Mining Switchgear
|
Parameter |
Description |
|
Rated Voltage Range |
Low to medium voltage, covering conventional mining power distribution requirements |
|
Current Capability |
Up to several thousand amperes depending on configuration |
|
Breaking Capacity |
High-breaking design to withstand severe short-circuit conditions |
|
Degree of Protection (IP Code) |
IP55 / IP65 or higher |
|
Explosion-Proof Certification |
Compliant with international standards such as IECEx and ATEX |
|
Applicable Standards |
IEC 60079 (Explosive atmospheres), IEC 62271 (High-voltage switchgear and controlgear), IEC 61439 (Low-voltage switchgear and controlgear assemblies), IEC 60529 (Degrees of protection provided by enclosures) |

Ruggedized Designs: Switchgear housings built with reinforced enclosures, dust-tight seals, and corrosion-resistant materials extend service life.
Digital Monitoring: Smart sensors track temperature, humidity, and partial discharge levels, enabling predictive maintenance before failures occur.
Remote Operations: Remote monitoring and control reduce the need for personnel to access hazardous environments while maintaining uptime.
Condition-Based Maintenance: Moving away from time-based inspections toward data-driven maintenance schedules reduces unnecessary interventions.
Safety Enhancements: Arc-resistant designs and fail-safe interlocks improve worker safety in environments where the consequences of a fault can be severe.
Customization Options
|
Structure |
Customizable based on project requirements |
|
Material |
Customizable (steel, stainless steel, or others) |
|
Logo |
Customizable |
|
MOQ |
Flexible |
Installation Process of Mining Switchgear
Site Preparation
Before installation begins, a thorough site assessment is conducted. This includes:
- Foundation Preparation: Ensuring that the foundation is suitable for the weight and dimensions of the transformer or switchgear.
- Transportation Logistics: Planning for the safe transport of equipment to the site, considering access routes and handling requirements.
Equipment Placement
Once on-site, careful placement of transformers and switchgear is critical:
- Positioning: Equipment must be positioned according to design specifications, ensuring correct orientation for high-voltage and low-voltage sides.
- Protection Measures: Protective measures should be taken to prevent damage during lifting and placement, such as using padding to protect sensitive components.
Connection Work
After placement, the next step involves making electrical connections:
- Wiring: All necessary wiring must be connected according to schematic diagrams.
- Grounding: Proper grounding techniques must be employed to ensure safety against electrical faults.
Installation of Accessories
Transformers often require additional accessories such as:
- Cooling Systems: Installation of cooling systems to maintain operational temperatures.
- Control Panels: Setting up control panels that monitor performance metrics.
Maintenance of Mining Switchgear
Inspection Checklist
A thorough Medium Voltage Switchgear Inspection Checklist should be used during every service interval:
|
Component |
Inspection Area |
Action/Check |
|
Enclosure/Panels |
Physical Condition |
Check for rust, deformation, or loose bolts. |
|
Busbars & Connections |
Heat Stress |
Use infrared thermography to detect hotspots. |
|
Circuit Breakers |
Operation |
Rack the breaker in and out; test trip mechanism. |
|
Insulators |
Contamination/Damage |
Look for signs of cracking, tracking, or heavy dust. |
|
Control Wiring |
Integrity |
Check for loose or damaged connections. |
|
Grounding |
Connection |
Verify secure, low-resistance connection. |
Cleaning and Testing
Effective MV Switchgear Cleaning and Testing prevents flashovers and ensures component integrity.
• Cleaning: Carefully clean the internal components, especially insulators and breaker contacts, using approved solvents and non-abrasive materials to remove dust and contaminants.
• Insulation Resistance Test: Measures the overall health of the insulation system (e.g., Megger testing).
• Contact Resistance Test: Measures the resistance across breaker contacts to ensure minimal heat generation.
• Dielectric Withstand Test (Hi-Pot): Applies high voltage to verify the dielectric strength of the insulation.
Ordering Process
Send Us Inquiry → Receive Our Quotation → Negotiate Details → Confirm the Sample → Sign Contract/Deposit → Mass Production →Cargo Ready → Balance/Delivery → Further Cooperation
Payment Terms
T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.
Our Service Highlights
Pre-Sales Consultation & Design Support
Early technical engagement to define requirements and deliver optimized solutions.
During Sales & Project Execution
Transparent project management with controlled production, quality tracking, and on-time delivery.
Warranty Advantage
Minimum 2-year warranty on all products, ensuring reliable and risk-free operation.
After-Sales Support
24/7 technical support with fast response, spare parts availability, and training services.
Long-Term Partnership
Lifelong technical support and upgrade guidance for sustained performance.
Packaging & Shipping
Packaging details:
Shockproof foam/moisture-proof film, professional export cartons/wooden crates/pallets.
Final assembly ensures mechanical integrity and readiness for transportation and installation.

Certificates





We're well-known as one of the leading mining switchgear manufacturers and suppliers in China, also support customized service. Please feel free to buy high quality mining switchgear made in China here from our factory. Contact us for more details.
mining switchgear, Mining High and Low Voltage Vacuum Distribution Switchgear, power distribution equipment

