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:
Model | EI41 |
Thick of Iron core(MM) | 13-28 |
Maximum output power(W) | 12 |
Input rated voltage | Single phase:220VAC |
Operation efficiency | 50HZ |
Output voltage | 13.5VAC |
Output current | 0.5A |
Power | 6W |
Specifications | EI41*20 |
Efficiency | ≥98% |
Temperature rise | <85℃ |
Waveform distortion | <0.1% |
Dielectric strength | 2000V,Without breakdown in one minute |
Insulation Resistor | Winding insulation resistor to single phase≥2.2MΩ |
Conditions of Use | 1.Ambient Temp.:-15℃~+40℃ |
2.Relative humidity:≤85% | |
Input/Output voltage(V) | Single phase input voltage can meet the requirements |
Remark | EI41*20 low frequency transformer shown as the above is one of the related technical parameters.Our company can make low frequency transformers(EI28-EI105) with different specifications according to client's requirement. Welcome to inquire. |
Application | Widely used in instruments,power supply of |
Price | The price mainly depends on the process complexity |
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
| Item | Core type | Output power(w) | Item | Core type | Output power(w) |
| EI28 | EI28/8×12 | 0.5-1 | EI57 | EI57/19×30 | 16-32 |
| EI28 | EI28/8×16 | 0.7-1 | EI57 | EI57/19×38 | 20-40 |
| EI35 | EI35/9.6×10 | 0.2-0.8 | EI66 | EI66/22×22 | 17-35 |
| EI35 | EI35/9.6×12.5 | 0.25-1 | EI66 | EI66/22×28 | 24-45 |
| EI35 | EI35/9.6×16 | 0.4-1.7 | EI66 | EI66/22×35 | 36-58 |
| EI35 | EI35/9.6×20 | 0.6-2.5 | EI66 | EI66/22×45 | 55-77 |
| EI41 | EI41/13×13 | 0.6-2.3 | EI76 | EI76.2/25.4×25 | 65-88 |
| EI41 | EI41/13×16 | 1-3.6 | EI76 | EI76.2/25.4×31.5 | 71-95 |
| EI41 | EI41/13×21 | 1.6-5.5 | EI76 | EI76.2/25.4×40 | 70-97 |
| EI41 | EI41/13×26 | 2.3-7.7 | EI76 | EI76.2/25.4×50 | 86-123 |
| EI48 | EI48/16×16 | 2.0-5.0 | EI85.8 | EI85.8/28.6×29 | 70-95 |
| EI48 | EI48/16×20 | 2.8-7.2 | EI85.8 | EI85.8/28.6×36 | 84-120 |
| EI48 | EI48/16×25 | 4.6-11.1 | EI85.8 | EI85.8/28.6×46 | 105-154 |
| EI48 | EI48/16×32 | 7.0-10 | EI85.8 | EI85.8/28.6×58 | 130-200 |
| EI54 | EI54/18×18 | 5.0-12 | EI96 | EI96/32×40 | 100-150 |
| EI54 | EI54/18×22.5 | 8.0-17 | EI96 | EI96/32×45 | 110-160 |
| EI54 | EI54/18×29 | 11.0-25 | EI105 | EI105/35 | 500-700 |
| EI54 | EI54/18×36 | 17.0-34 | EI114 | EI114/38 | 700-1000 |
| EI57 | EI57/19×19 | 7.0-16 | All the output voltage and current are according to customers' requirements | ||
| EI57 | EI57/19×24 | 14.0-21 | |||
