Our company is a professional manufacturer of encapsulated transformer series.

* such as EI20, EI28,EI30,EI35,EI38,EI41,EI57,EI66.

* power range is 0.5W-80W.

* our products are produced with automatic winding machines and vacuum encapsulated.

* all the raw material is UL, SGS approved and produced as ROHS compliant.

* our products are exported to American and Europe. 
* we can design specific products according to customers' demands.

EI type iron power supply transformer,low loss at no load,high power output,high efficience,low temperature rise,widely used in air-conditioner,VCD,acoustics,microwave oven,amplifier,SPC exchange,UPS power supply,and the power supply meter,equipment of all kinds machine electronics,medical treatment,chemical industry,post and telecommunications,spinning,popular science.

KEY FEATURES:      

Feature of Low Frequency Transformer 

1.Small idle current

2.Strong load capacity

3.Multiple output windings

Technology parameters of Power supply transformer:

1.Primary voltage: 440V/415V/380V/220V/200V( Customer designated)

2.Secondary voltage:380V/220V/200V/110V/100V/36V/24V/12V/6.3V/3.6V( Customer designated)

3.Operational frequency:50/60Hz

4.Insulation class: T40/B(130℃);T40/F(155℃); T40/H(180℃)@50Hz&Rated current

5.Dielectric strength:P-S 2500V/1min  No breakdown

6.P-E 2500V/1min  No breakdown

7.Insulation resistor:≥100MΩ

8.Cooling way:(Air cooling)

9.Linking way:Y/Y Y//Y  Customer designated

10.Temperature rise limitation:Core does not exceed 80K(thermometer method)),the coil temperature does not exceed 80K(platinum resistor method).

11.Working noise:<60dB(horizontal distance with transformer is 1 meter)

 power transformer

ELECTRICAL SPECIFICATIONS:

A. Feature:

1. Custom designs available

2. High efficiency of over 95%

3. High frequency range 10kHz-1MHz

4. High isolation strength

5. Lower profile and weight

6. high power density

7. High-temperature resistant

8. Operating temperature -40°C to +125°C

9. Power range 10w-10kw

B. Wire Materials:

1. Copper, Aluminum, Aluminum Clad Copper.

2. The size of transformer total in Aluminum is larger than which total in Copper.

3. Aluminum instead of Copper Cost Save: 13%-35%/PC

C. Certification:

ISO9001, CESI, UL, CE, RoHS and SGS.

D. Testing Items:

1. No-load Test(No-load Current, No-load Voltage, No-load Loss)

2. Load Test (Load Voltage, Temperature-rise)

3. Inductive Voltage Test

4. DC Resistance Test  5. Safety Test

E. Application:

1. Electronic Meter & Apparatus

2. Cable TV & Digital Network

3. Electronic Control

4. Medical Equipment

5. New Electric Power Supply

6. Decorative Illumination System

7. Security Monitor & Control System

8. Comparison on Transformer with Toroidal, EI, R, CD Shape Core