1) 3-phase dry type transformer can be manufactured as open-type and protected-type,with the strengths of low wear and tear ,low noise,good fireproof performance and no pollution.
2) Transformers are classified into control transformers and lighting transformers according to purposes.Control transformer are fixed transformers,and lighting transformers are movable transformers except those for machine tools.
3) The iron core of transformer is made of cold rolled silicon steel sheet,and profile steel or steel plate is used as clamping device at two sides of iron yoke,which is fasted with screws.The material of iron core is imported high-quality oxygen-free copper/aluminum wire,effectively reducing wear and tear in operation and ensuring stability.In production,vacuum insulation voltage and significantly improves safety and service life of transformer.
| Product Name | Three phase dry type transformer |
| Product Model | SG/QZB/SBK/Power transformer/ZSG/SBDG/EPS UPS |
| Winding Material | Enameled copper wire or enameled aluminum wire |
| Capacity | 100VA~5000KVA |
| Input Voltage | 415V or customized |
| Output Voltage | 380V or customized |
| Frequency | 50/60Hz |
| Connection Type | DYN11/YYN0 |
| Insulation Level | F/H |
| Enclosures Protection Level | IP00 or higher |
| Pressure-tight Test | 2500V/min |
| Insulation Resistance | >100MΩ |
| Ground Resistance | 25A<100milliohm |
| Induction Withstand Voltage Test | 125Hz / 830V / 60s |
| Cooling Method | Natural or air cooling |
| Temperature Rise | ≤115K |
| Transformation Ratio | <3% |
| Air Carrying Current | <3% |
| Impedance Voltage | about 4.5% |
| Total Losses | 4% |
| Efficiency | 80%--99% |
| Operating Temperature | -15℃～40℃ (40℃, 90%R.H., 56days) |
| Storage Temperature | -25℃～100℃(40℃, 90%R.H., 56days) |
| Certificate | CE,ISO |
| The technical parameter for reference only, for exactly technical information, please feel free to contact us! |
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.
