This box-type transformer integrates high-voltage switchgear, distribution transformers, and low-voltage switchgear into a single compact unit. The carved panel design enhances ventilation, structural durability, and ease of maintenance. Whether applied in smart grids, industrial facilities, or urban residential areas, the carved board box transformer ensures efficient energy distribution with minimal losses.
Key Features
- Integrated design: Combines transformer, high-voltage control, and low-voltage distribution.
- Compact structure: Space-saving box enclosure suitable for limited installation areas.
- Durable materials: Flame-retardant and weather-resistant carved board housing.
- High safety level: Short-circuit protection, overload resistance, and reliable grounding.
- Energy efficiency: Reduces energy loss during distribution and supports green power systems.
Advantages
Choosing our carved board box transformer brings multiple benefits:
- Ease of installation – pre-assembled, plug-and-play design.
- Low maintenance – durable carved enclosure reduces dust and corrosion issues.
- Wide application – suitable for both medium voltage distribution and low-voltage networks.
- Safety assurance – equipped with protective relays and fault detection systems.
- Flexibility – customizable according to urban, rural, and industrial energy demands.
| 2.Model Designation | |
| Y B□ □-12/0.4(□)□/□ | |
| Transformer Rated Capacity(KVA) | |
| Type of Operating Mechanism for High-voltage Switchgear T-Spring Operating Mechanism S-Manual Operatng Mechanism | |
| Type of Standby Main Switch for High-voltage Switchgear | |
| F-Load Break Switch | |
| F·R-Load Break Switch +Fuse Rated Voltage | |
| Design Serial Number Structural Features: P-Tripod Shape; | |
| M-“Mu”Shape(Horizontal Three – Compartment Structure) | |
| Substation Prefabricated | |
Applications
- Urban residential power supply – compact structure fits into community substations.
- Commercial complexes – malls, office towers, airports, and hospitals.
- Industrial facilities – factories, mining sites, and production centers.
- Renewable energy integration – wind farms and solar plants.
- Infrastructure projects – railways, metro stations, and smart grid expansion.
| NO. | Project | Unit | High-voltage Apparatus | Transformer | Low-voltage Apparatus | ||||
| 1 | Rated Voltage Ue | KV | 7.2/12 | 6/0.410/0.4 | 6/0.410/0.4 | ||||
| Rated Capacity Se | Eye-shaped:200~1250 | ||||||||
| 2 | KVA | Triangular-shaped:50~800 | Maximum2×1250 | ||||||
| 3 | Rated Current Le | A | 200~630 | 100~3000 | |||||
| Rated Breaking Current | A | Load Switch 400~630A | |||||||
| 4 | The switchgear assembly | 15~63 | |||||||
| KA | depends | on the fuse. | |||||||
| Rated Short-time Withstand | 20×(2) | 200~400KVA | 15×1 | ||||||
| 5 | Current(seconds) | KA | 12.5×(4) | 400KVA | 30×1 | ||||
| 6 | Rated PeakWithstand Current | 31.550 | 200~400KVA | 30 | |||||
| KA | |||||||||
| 400KVA | 63 | ||||||||
| 7 | Rated Making Current | KA | 31.550 | ||||||
| Power Frequency Withstand | Between Phase and Earth, | Oil-immersed:35/5min | When≤300V,2KV. | ||||||
| 8 | Voltage for 1min | KV | and Between | Phases30/42 | |||||
| Isolating Break 34/48 | Dry-type:28/5min | Whenitis 300-600V,it is 2.5KV. | |||||||
| Between Phase and Earth, | 75 | ||||||||
| 9 | Lightning Impulse | KV | and Between Phases 60175 | ||||||
| Isolating Break 75/85 | 75 | ||||||||
| 10 | Noise Level | 0il-immersed:<55 | |||||||
| dB | Dry-type:<65 | ||||||||
| 11 | Protection Level | IP23D | |||||||
| 12 | Outline Dimension | According to the scheme and the selected high-low voltage switchgear and transformer,different outline dimensions are selected. | |||||||
Installation & Maintenance
Installing a box transformer requires only a leveled base, correct cabling, and grounding connections. The carved board structure ensures ventilation and quick inspection access. For long-term reliability:
- Check cable connections periodically.
- Clean external surfaces to avoid dust accumulation.
- Monitor load levels and transformer temperature.
- Inspect protective relays for accurate operation.
How to Choose the Right Box Transformer
When selecting a carved board box transformer manufacturer, consider:
- Rated capacity – match to project load requirements.
- Primary and secondary voltage levels.
- Outdoor vs. indoor use (choose weather-proof enclosures for outdoor).
- Energy efficiency class for reduced operating costs.
- Certification & compliance with IEC, CE, and local grid standards.
FAQ
What is a carved board box transformer?
It is a compact distribution transformer integrated into a carved enclosure with high- and low-voltage controls.
Can it be installed outdoors?
Yes, the flame-retardant carved board housing is weather-resistant, making it suitable for outdoor use.
What industries use this type of transformer?
It is widely used in urban grids, renewable energy projects, industrial plants, and commercial complexes.
Is it customizable?
Yes, we provide tailored box transformer solutions based on capacity, voltage, and environmental conditions.
How long is the service life?
With proper installation and minimal maintenance, the transformer can last over 20 years.
