China S13 Three Phase Oil Immersed Distribution Transformer Suppliers Factory | 2.5-40.5kV IEC Standard
Farady offers a complete range of distribution transformers designed to grant the reliability, durability, and efficiency required in utility, industrial, and commercial applications.
General
Farady's liquid-filled transformers are manufactured in accordance with the most demanding industry and international standards. Compliance with important standards, from IEC to VDE, is a matter of course, just as much as the exclusive use of high-quality materials, qualified employees implement the demanding standards in daily practice.
Standard Features
Product Range: 15kVA-10000kVA, up to 44kV
System voltage: max. 36 kVA 200 BIL
Coolers: corrugated wall or radiator
Oil preservation: hermetically sealed or conservator
Tap changer: off-circuit or on-load
Cooling medium: mineral oil, Midel
Steel type core clamping system
High voltage (HV) multilayer winding
Low voltage (LV) foil or layer winding
Winding materials: aluminium or copper
High temperature class transformers
Low noise solution
Efficient transformers with reduced losses
Liquid-filled technology
Used in special conditions
Sophisticated facilities
Usage of wooden case
3D package for drawings
Zero Sequence Impendence test
Cooling: ONAN, ONAN/ONAF, KFAF, KFW
Service Condition
- Suitable for indoor or outdoor application.
- Air temperature: Maximum temperature: +40℃; Minimum temperature: -30℃.
- Humidity: Monthly average humidity 95%; Daily average humidity 90%.
- Altitude: Maximum installation altitude 2000m above sea level.
- Max wind speed: 35M/s.
- Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
- No frequent violent shake.
* Note: Beyond those services condition should enquiry to manufacturer technical dept during order.
Tests
Voltage ratio, Polarity and phase relationship
Resistance of all windings
No-load current and no-load losses
Load losses at rated current and frequency
Impedance voltage measurement
Induced over-voltage withstand tests
Impulse voltage withstand test
Noise level test
Oil leakage test
Overload test (150% rated current)
Custom Work- In Macrocosm And In Microcosm
1. THE IRON CORE
Whether in design, manufacturing methods or materials the cores of Farady transformers represent the latest state of technology. The silicon alloyed electric sheet steel used is grain-oriented, cold-rolled and insulated on both sides, guaranteeing low losses and noise and these values are even improved by laser treatment. Numerically controlled cutting machines provide for careful treatment in the cutting process in order to avoid mechanical tension in the core. Standard use of step-lap cutting additionally minimizes losses and noise.
2. THE WINDING
The winding as the centerpiece of the transformer must be especially protected against high electrical stress and mechanical overloads. Farady transformers are systematically designed to meet these requirements. The windings are made of copper or aluminum. Low-voltage windings use strip or flat wire, while high voltage windings use round or profile wire. The use of "diamond-dotted paper" bonds the winding into a compact block while drying and increases short-circuit capacity.
3. THE TANK
The tank must be absolutely tight under mechanical stress. Preconditions include constructional experience, modern calculation methods and high-quality welding. Special attention is paid to corrosion protection through sandblasting and multi-coating. In hermetically sealed transformers, corrugated walls absorb volume changes, while expansion tank transformers use a conservator. The sheet-steel lids are bolted or welded to withstand transport and operation stress.
Frequently Asked Questions (FAQ)
What is the capacity range of Farady distribution transformers?
Farady offers distribution transformers ranging from 15kVA to 10000kVA, with system voltages up to 44kV.
What international standards do Farady transformers comply with?
Our transformers are manufactured in accordance with major international standards, including IEC and VDE, ensuring global reliability and efficiency.
Are these transformers suitable for harsh environmental conditions?
Yes, they are designed for both indoor and outdoor use, capable of operating in temperatures from -30℃ to +40℃ and at altitudes up to 2000m.
What materials are used for the transformer windings?
Windings can be manufactured using either high-quality copper or aluminum, depending on the specific application requirements and customer preferences.
How does Farady ensure the durability of the transformer tanks?
Tanks undergo rigorous corrosion protection, including surface sandblasting and multi-layer coating. We also offer hot-dip galvanization upon request for enhanced protection.
What cooling methods are available for Farady liquid-filled transformers?
We provide various cooling options including ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced), KFAF, and KFW.