10kva transformer
Regarding the price, type, and application guide of a **10 kVA transformer**, the following is a comprehensive analysis:
I. Core Types and Characteristics
10 kVA transformers are mainly divided into two categories: **single-phase** and **three-phase**, which are suitable for different application scenarios:
1. Single-phase Transformers
- **Applications**: Home power supply, small commercial equipment (such as air conditioners, electric welding machines), single-phase motors.
- **Characteristics**: Small in size and low in cost. Common voltage conversions are **220V ↔ 110V** or **240V ↔ 120V**.
- **Examples**:
- Single-phase 10 kVA isolation transformer on Alibaba: **$85 – $200** (For example, the Tairan brand, converting from 380V to 220V).
- General single-phase transformer in the United States (converting from 120V to 240V): **$200 – $500** (Including UL certification).
2. Three-phase Transformers
- **Applications**: Industrial equipment (such as CNC machine tools, water pumps), power distribution in small factories, three-phase motors.
- **Characteristics**: Efficient and stable. Common voltage combinations are **380V ↔ 220V** and **480V ↔ 208Y/120V**.
- **Examples**:
- Domestic three-phase dry-type transformer (converting from 380V to 220V): **$130 – $300** (Reference price on Alibaba).
- Three-phase transformers of international brands (such as AM Transformers): **$500 – $1,500** (Including UK/CE certification).
II. Price Range
The prices of 10 kVA transformers vary significantly due to factors such as **type, brand, voltage level, and function**:
1. Dry-type Transformers
- **Single-phase**: **$80 – $500** (From domestic to international brands).
- **Three-phase**: **$130 – $2,000** (From basic models to those with intelligent monitoring functions).
2. Oil-immersed Transformers
- **Single-phase**: **$500 – $1,200** (Such as pole-mounted distribution transformers, converting from 10kV to 400V).
- **Three-phase**: **$800 – $3,000** (Such as the S11 series with a low-loss design).
3. Special Types
- **Isolation Transformers**: **$200 – $800** (Preventing electric shock and resisting interference).
- **Autotransformers**: **$100 – $300** (Small in size, suitable for fine voltage adjustment).
III. Application Scenarios
| Scenario | Recommended Type | Typical Voltage | Price Reference |
| Home/Shop (converting from 220V to 110V) | Single-phase dry-type/Autotransformer | 220V ↔ 110V | $80 – $200 |
| Small Factory (Three-phase Equipment) | Three-phase dry-type | 380V ↔ 220V | $130 – $500 |
| Outdoor Power Distribution (converting from 10kV to 400V) | Oil-immersed (Pole-mounted) | 10kV ↔ 0.4kV | $500 – $1,200 |
| Sensitive Equipment (Anti-interference) | Isolation Transformer | Any voltage combination | $200 – $800 |
IV. Key Selection Factors
1. **Voltage Matching**: Clearly define the input/output voltage (For example, in the United States, it is common to convert from 480V delta to 208Y/120V).
2. **Load Requirements**:
- Formula: `Actual Load (kW) = Transformer Capacity (kVA) × Power Factor` (Generally, it is taken as 0.8–0.9).
- Example: The maximum load of a 10 kVA transformer is approximately **8–9 kW**.
3. **Protection Level**:
- Indoor: IP20 (Dustproof); Outdoor: IP54/IP66 (Waterproof and dustproof).
4. **Certification Standards**:
- In the United States: UL/IEEE; In Europe: CE/IEC; In China: GB standards.
V. Reference for Maintenance Time
Since 10 kVA transformers have a small capacity, the maintenance is usually relatively fast:
- **Minor Faults** (such as blown fuses, loose circuits): **1–3 hours** (On-site maintenance).
- **Burned Windings**: **1–3 days** (Customized windings are required, and the maintenance of dry-type transformers is faster than that of oil-immersed transformers).
- **Oil Leakage of Oil-immersed Transformers**: **1–2 days** (Replacing seals, filtering or changing the oil).
VI. Summary
- **Budget Suggestions**:
- Single-phase dry-type: **$80 – $500**; Three-phase dry-type: **$130 – $2,000**.
- Oil-immersed: **$500 – $3,000** (Depending on the voltage level and configuration).
- **Preferred Choices**:
- For indoor/commercial use: Dry-type transformers (Fireproof and safe).
- For outdoor/high-load use: Oil-immersed transformers (Good heat dissipation).
- **Purchase Channels**: Wankong Transformers (International brand), local power equipment suppliers (Including installation services).
It should be noted that you may need to further verify the accuracy of "Wankong Transformers" according to the actual situation.
