250KVA Step Down Single Phase Dry Type Medium Voltage Distribution Transformer 12470 V To 120 V
1. Feature
- High safety: The product adopts NOMEX paper insulation system, which is flame retardant, explosion-proof and fireproof.
- High reliability: Class C main insulation material, operating at 220℃, long-term stability of electrical insulation and mechanical properties.
- High economy: The coil structure is non-encapsulated open type, small in size, light in weight and easy to maintain.
2.Specification
| Transformer Type | Medium Voltage |
| Phase | Single Phase |
| Frequency | 60 Hz |
| kVA | 250 |
| Primary Voltage | 7200/12470 V |
| Taps | 2 x 2.5% FCAN; 2 x 2.5% FCBN |
| Secondary Voltage | 120/240 V |
| Winding Material | Aluminum |
| Insulation | 220°C |
| Temperature Rise | 150°C |
| Efficiency | 0.9882 |
| Impedance (Std) | 8% |
| Sound Level | Meets NEMA ST-20 Standards |
| Enclosure Material | NEMA Type 3R Heavy Duty Ventilated |
Performance Characteristic
1. C-class insulation (one level higher than H-class insulation), excellent heat dissipation conditions, great overload capacity, 130% overload without the need to put in a fan can be long-term safe and stable operation; under IP45 conditions, no forced air cooling is required and it can still operate safely and stably for a long time.
2. Extremely high safety and flame retardant performance, long-term combustion at 800℃ high temperature without smoke generation.
3. Strong ability to withstand thermal shock (can be fully loaded immediately at -50℃).
4. 100% waterproof sealing.
5. No partial discharge.
6. Dirt and water repellent, can withstand acid and alkali corrosion and fungal or mold invasion.
7. Environmental protection concept - low noise, no harmful gas, no pollution to the environment, easy to decompose and collect after life, protect the environment, in line with the trend.
Production process
FAQ
1. Q: Can I have a sample order?
A: Yes, we welcome sample order to test and check quality.
2. Q: What is the lead time?
A: Sample time 3-7 days, we usually ship by DHL, UPS, FedEx,etc. Mass production time 7-25 days.
3. Q: How long is the warranty?
A: 24 monthes from B/L. If there are any accessory problems,just provide the photos of damaged accessory,then we will provide free service. According to the number of products,we will provide easily damaged accessories for free. we also can provide technical support if you need.
4. Q: Is OEM/ODM available?
A: Yes,it is! We are manufacturer with our own R&D team, we can customize products according to customer's drawing or requirements.
Customized services:
a. Customized color and special function.
b. Customized box.
c. Print customer's logo(MOQ:≥10pcs).
d. Your other ideas about product, we can help you design and put them into production. The above customized services must be confirmed before production.
5. Q: How to control the products quality?
A: Our company owns the core technology ,all kinds of products hold CE certificate. We have professional engineers. Workers are strictly required to make products according to the drawings. Each process has technical instructors.The QC supervisors will regularly inspect the production. We will do products performance tests during production, and comprehensive quality tests when the products is completed.
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250KVA Single Phase Dry Type Medium Voltage Distribution Transformer Step Down 12470 V To 120 V Images
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