15515673159
China YB-12 Prefabricated Substation 35kV Mining Explosion-Proof - High Protection Factory Suppliers
Product Features
1
Wide Temperature Range Stable Operation Guarantee
The product has undergone strict thermal design verification, ensuring stable performance from the extremely cold winter at -10°C to the extremely hot summer at +40°C. Key components are selected from products with wide temperature ranges, and the box body uses special insulation materials and a ventilation cooling system to effectively cope with a solar radiation heat load of 1000W/m², preventing excessive internal temperature from affecting the equipment lifespan.
2
Strengthening Structure to Withstand Extreme Weather
The box structure is made of high-strength frames and weather-resistant steel plates. After calculation, it can withstand a wind pressure load of 35m/s (equivalent to a typhoon of level 12). The special design of the top cover can effectively drain rainwater and resist the additional load caused by 20mm of ice accumulation. All door gaps and interface areas are treated with multi-layer sealing, with a protection level of above IP54, ensuring the safe operation of internal equipment in a humid and rainy environment.
3
Verification in High-Altitude and High-Humidity Environments
The electrical insulation design fully takes into account the impact of thin air at an altitude of 1000 meters, leaving sufficient safety margin. For the humid environment, an automatic temperature and humidity control system is equipped inside the box. When the humidity exceeds the set value, the heating dehumidification device will automatically start, ensuring that under harsh conditions with an average monthly relative humidity of ≤90% and an average daily humidity of ≤95%, no condensation occurs on the internal components, and the insulation performance remains reliable at all times.
4
Seismic Design and Safety Redundancy
The overall structure is designed in accordance with the 8-degree seismic resistance requirements. Flexible connections and vibration reduction measures are adopted to ensure that the main equipment is not structurally damaged during an earthquake, and to maximize the continuity of power supply. This feature makes it particularly suitable for power grid construction in areas prone to earthquakes.
Operating Environment
General Conditions
- • Ambient air temperature: -10°C to 40°C
- • Solar radiation: ≤ 1000 W/m²
- • Sea depth: ≤ 1000 m
- • Ice coverage: ≤ 20 mm
- • Wind speed: ≤ 35 m/s
Temperature & Humidity
- • Daily average relative humidity: ≤ 95%
- • Monthly average relative humidity: ≤ 90%
- • Daily average relative water vapor pressure: ≤ 2.2 kPa
- • Monthly average relative water vapor pressure: ≤ 1.8 kPa
Safety Conditions
- • Earthquake intensity: ≤ 8 degrees
- • No risk of fire, explosion, severe pollution, chemical corrosion or severe vibration
⚠️ Note: Special usage conditions — when placing an order, please discuss with the manufacturer for resolution.
Product Specifications
| Name | Unit | High-Voltage Electrical Cabinet | Transformer | Low-Voltage Electrical Cabinet |
| Nominal Voltage | KV | 10 | 10/0.4 | 0.4 |
| Rated Current | A | 630 | — | 100~2500 |
| Rated Frequency | Hz | 50 | 50 | 50 |
| Rated Capacity | KVA | — | 100~1250 | — |
| Rated Thermal Stability Current | kA | 20/4S | — | 30/15 |
| Rated Dynamic Stable Current (Peak) | kA | 50 | — | 63 |
| Rated Closing Short-Circuit Current (Peak) | kA | 50 | — | 15~30 |
| Rated Breaking Short-Circuit Current | kA | 31.5 | — | — |
| Rated Starting Load Current | A | 630 | — | — |
| 1min Power Frequency Withstand Voltage | kA | Intergranular 42 fracture surfaces between 48 layers | 35/28 (5min) | 20/2.5 |
| Lightning Impulse Withstand Voltage | kA | Intergranular 42 fracture surfaces between 48 layers | 75 | — |
| Shell Protection Grade | — | IP23 | IP23 | IP23 |
| Noise Level | dB | — | Oil transformer <55 / Dry transformer ≤65 | — |
| Loop Number | Amount | 1~6 | — | 4~30 |
| Maximum Reactive Power Compensation (Low-Voltage Side) | kvar | — | — | 300 |
Detail Pictures
Frequently Asked Questions (FAQ)
Q
What is the operating temperature range of this box-type transformer?
This box-type transformer is designed to operate stably across a wide ambient temperature range of -10°C to +40°C. The thermal design has been strictly verified, and key components are selected for wide-temperature performance. The enclosure also uses special insulation materials and a ventilation cooling system to handle solar radiation heat loads up to 1000W/m².
Q
What wind and weather resistance does the enclosure provide?
The box structure is constructed from high-strength frames and weather-resistant steel plates, capable of withstanding wind pressure loads of up to 35m/s — equivalent to a Level 12 typhoon. The top cover design effectively drains rainwater and resists additional loads from up to 20mm of ice accumulation. Multi-layer sealing on all door gaps and interface areas provides an IP54 or higher protection rating.
Q
Can this transformer be used in high-altitude or high-humidity environments?
Yes. The electrical insulation design accounts for reduced air density at altitudes up to 1000 meters. An automatic temperature and humidity control system is built into the enclosure. When humidity exceeds the preset threshold, a heating dehumidification device activates automatically, preventing condensation even under conditions with a monthly average relative humidity of ≤90% and a daily average of ≤95%.
Q
What is the seismic resistance rating of this product?
The overall structure is designed to meet 8-degree seismic resistance requirements. Flexible connections and vibration-reduction measures are incorporated to protect the main equipment from structural damage during an earthquake, maximizing power supply continuity. This makes the product especially suitable for power grid construction in earthquake-prone regions.
Q
What are the rated capacity and voltage options for this transformer?
The transformer supports a rated capacity range of 100 to 1250 KVA, with a nominal voltage of 10/0.4 KV. The high-voltage electrical cabinet operates at 10 KV with a rated current of 630A, while the low-voltage electrical cabinet supports 0.4 KV and rated currents from 100A to 2500A, offering flexible configuration for various application scenarios.
Q
What should I do if my installation environment has special conditions?
If your installation site involves conditions outside the standard operating parameters — such as extreme temperatures, unusual altitudes, high pollution levels, chemical corrosion risks, or severe vibration — please contact the manufacturer directly before placing your order. Our engineering team will work with you to assess the requirements and provide a tailored solution.