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.
