Lead type bridge transformer 220v to 380v transformer

Lead type bridge transformer 220v to 380v transformer

EI54*25

The core ei bridge transformer is a 50Hz/60Hz lead type low-frequency power conversion component.

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The core ei bridge transformer is a 50Hz/60Hz lead type low-frequency power conversion component. It is equipped with an integrated dual-ear fixed bridge installation base, suitable for direct locking assembly with chassis, control cabinets, and cable trays. The product uses standard high-magnetic-permeability oriented silicon steel sheets to stack and form an EI core. It has low magnetic loss and small no-load current. The primary and secondary coils inside are separated by flame-retardant frames, and the windings use high-purity enameled copper wires. The outer layer is fully covered with multiple layers of mala insulating tape. The entire machine undergoes high-temperature vacuum immersion and drying treatment, ensuring the coils are compact and not loose, and the insulation and withstand voltage performance are excellent.
The entire machine is equipped with color-coded lead-out wires, with different colored wires (such as red, blue, and black) distinguishing the input and output terminals.
The standard model supports various voltage conversion specifications such as 220v to 380v transformer, 380V to 220V, 220V to 12/24/36V. It has a high-voltage and low-voltage electrical isolation function, which can isolate grid noise and leakage risks, and provide stable output of pure control voltage, suitable for industrial long-term uninterrupted power supply operation environments.

Core advantages of the Bridge transformer

1. The bridge frame and support are integrated, with strong installation adaptability.
It comes with a self-contained extended round-hole double-ear bridge base, eliminating the need for additional fixing components. Screws can directly lock onto the control cabinet, cable tray bridge frame, equipment base plate, wall-mounted box, and are compatible with various installation methods such as embedded, side-mounted, and horizontal placement. The assembly is simple and time-saving.
2. Electrical isolation is safe, and the anti-interference ability is strong.
The primary and secondary coil are completely insulated, blocking power surges and leakage conduction, protecting the rear circuit board and precision components; the metal shell + immersion paint shielding structure significantly reduces electromagnetic radiation, avoiding interference with sensors, PLC, and instrument signals.
3. Pure copper winding has low loss and is durable and stable.
The winding is made of oxygen-free pure copper enamel wire, with high conductivity efficiency. It has low temperature rise during long-term full-load operation and is not prone to overheating and aging; compared to aluminum wire transformers, it generates less heat and has a 2-3 times longer service life, suitable for 24-hour continuous working conditions.
4. Multi-layer insulation protection, with a high safety level.
The flame-retardant frame separates the coils, the double-layer Mala insulation film, and the overall immersion paint provide triple insulation protection. All are tested for high-voltage endurance at the factory, with a high breakdown voltage, preventing moisture and short circuits, and meeting the safety electricity usage standards for industrial control equipment.
5. Low vibration and low noise
The high-precision laminated silicon steel sheet core has uniform gaps, resulting in weak vibration during operation; the immersed paint fixed coil eliminates resonant noise from the coil, and can be used in silent environments such as computer rooms and instruments.
6. Dry type, maintenance-free, and has a wide environmental adaptability
It is oil-free, leak-free, and has no flammable media. It can be used in indoor normal temperature and mild humidity control cabinets, and no maintenance is required daily. It can withstand a wide temperature working range of -10℃ to 65℃.
7. Color-coded lead wires for identification, with zero wiring errors
Input and output use different colored wire materials for distinction. The body is printed with voltage parameter labels, allowing construction personnel to quickly distinguish between high and low voltage ends, effectively avoiding reverse voltage that could burn out control components.
8. Compact size, saving space
The compact EI core structure has a narrow thickness and occupies less space, perfectly adapting to small electrical control boxes, weak current boxes, and the internal narrow installation positions of instruments.

Customized Services

1. Voltage parameter customization
Input voltage: 220V, 380V, 400V, 110V, etc.;
Output voltage: single group / multiple groups of 6V, 12V, 24V, 36V, 110V, 220V. Supports boost, reduction, dual-channel isolated output non-standard windings.
2. Power specification customization
5VA to 1000VA full power coverage. Small power instrument models, medium power control cabinet models, and large power equipment matching models are produced as per customer requirements.
3. Outlet structure customization
Lead wire style: customize lead wire length, replace wire material sheath, adjust wire color;
Terminal style: can be changed to plug-in terminals, connection posts, straight insertion pins, solder pad type outlet, suitable for automated welding.
4. Installation structure customization
Bridge frame support can be single ear, no support, DIN rail snap type; customize support size, opening distance, suitable for customer exclusive chassis; can remove metal casing to make bare core style.
5. Material upgrade customization
Winding can choose pure copper/aluminum wire; iron core can choose thickened high magnetic permeability silicon steel sheet; insulation material upgrades to high-temperature resistant Malla tape, suitable for high-temperature equipment; enclosure can customize painting color, silk screen customer LOGO and parameter labels.
6. Performance and process customization
Strengthen moisture-proof, salt spray immersion paint treatment, suitable for humid outdoor cabinets; thickened shielding layer, used for high-precision instruments to resist interference; increase withstand voltage level to meet special equipment safety standards.
7. Accessories and certification services
Large batch orders can be equipped with fixed screws, insulating pads; can provide factory insulation test report, CQC insulation certification, withstand voltage test form; support long-term stable supply in batches, one-stop equipment matching.
8. Non-standard special mold customization
Special ultra-thin, narrow-sized iron core suitable for narrow chassis; dual isolation, multi-winding multi-channel output, special boost transformers can be independently produced.

Bridge type transformer real-shot details：

Company Introduction

Shenzhen CXWON Technology Co., Ltd. is a trustworthy enterprise integrating R&D, production and sales. It specializes in manufacturing various types of inductors such as high-frequency transformers, high-voltage transformers, low-frequency transformers, audio transformers, negative ion generators, ozone high-voltage packages, mosquito-killing lamps, UV lamp power supplies, etc. Our products are widely used in household appliances, intelligent control, medical fitness equipment, communication devices, instruments and meters, security control, industrial control, ozone negative ion generators, energy conservation and environmental protection, etc. Some of our products have obtained safety certifications such as UL, TUV, GS, CE, FCC, CQC, etc.

Typical application scenarios

1. Industrial machine processing equipment
CNC lathes, milling machines, grinding machines, stamping equipment, bending machine control boxes, convert 380V industrial voltage into 220V/24V control power supply, supply it to the operation panel, contactors, indicator lights.
2. Fire alarm risk control system
Fire linkage control cabinet, fireproof roller shutter controller, fan and water pump control box, smoke exhaust equipment, isolate and convert power supply, ensure the stable operation of fire modules and alarm relays.
3. Automated production line equipment
Packaging machinery, conveying and sorting equipment, printing machines, textile machinery industrial control boxes, provide isolated control voltage for PLC controllers, photoelectric sensors, small actuators.
4. Building weak current accessories
Community access control cabinet, monitoring weak current box, public lighting master control box, elevator control panel, achieve high-low voltage isolation, reduce the risk of leakage of weak current equipment.
5. Instrument and testing equipment
Industrial temperature control instruments, laboratory testing instruments, quality inspection and testing equipment, filter out grid interference, ensure the accuracy and stability of test data.
6. HVAC, water pump control boxes
Central air conditioning outdoor unit, industrial booster water pump, exhaust fan control box, convert the main circuit high voltage, supply it to the control circuit separately.
7. Charging piles, auxiliary modules for new energy
AC charging piles, small energy storage equipment internal auxiliary control circuits, low-voltage isolated power supply, improve the safety coefficient of equipment power consumption.
8. Medical small equipment
Therapeutic equipment, small medical testing instruments internal power conversion, electrical isolation to avoid electric leakage harm to the human body.
9. Security accessories equipment
Large gates, industrial access control, gate machine control box, adapt to outdoor control cabinets to provide stable voltage transformation power supply.

Flowchart

FAQ

Q1: What types of magnetic components can you customize?
A: We offer complete OEM and ODM services for high-frequency transformers, low-frequency power transformers, common-mode inductors, power inductors, ring coils, flat wire inductors, filter reactors, and multi-winding coils. Support through through-hole/solder pad (SMD), vertical/horizontal installation, optional EE/EI/PQ, ring ferrite or silicon steel core. Widely used in switching power supplies, new energy chargers, industrial control, medical equipment, and solar inverters, etc.
Q2: What technical parameters need to be provided when making the quotation?
A: You can provide electrical parameters (inductance value mH/uH, DCR, Isat, turns ratio, operating frequency, withstand voltage value), size drawings, physical samples, operating temperature range, environmental requirements, and annual order quantity. If only the application scenario is provided without the complete specifications, our engineers will design a solution for you for free.
Q3: Can I customize the inductance value, DC resistance (DCR), leakage inductance and insulation voltage?
A: All electrical parameters can be adjusted. We offer inductance tolerances of ±5%, ±10%, and ±20%; we use multi-strand Litz wire to reduce DC resistance and heat generation; we control leakage inductance for high-frequency transformers; the insulation withstand voltage can be selected from 1kV to 5kV.
Q4: Can I customize the pin type, wire length and installation structure?
A: Yes. We support vertical/horizontal through-hole, SMD base, extended leads, custom wire color, insulating sleeves, vacuum impregnation, epoxy resin casting, metal shielding casings, and customer-specific part number silk-screening, etc.
Q5: Will the unit price be lower if the order quantity is larger?
A: We use a tiered pricing approach. The larger the order quantity, the lower the raw material costs for the cores and wires, and thus the unit price decreases accordingly. Long-term cooperative customers can enjoy additional annual discounts.
Q6: If I only have the requirements for the equipment application, can you provide the design drawings?
A: We offer free development services for magnetic component solutions. Our engineers will generate circuit diagrams, winding specifications and size drawings based on the power, frequency and size limitations of the equipment. After confirmation, samples will be produced.
Q7: What tests will be conducted before shipment? Can test reports be provided?
A: 100% comprehensive inspections will be carried out for inductance, DC resistance, withstand voltage, on-off capability and appearance; sampling inspections will be conducted for aging, high and low temperature cycling, salt spray, and vibration. Corresponding quality inspection reports for each batch of goods can be attached. The complete inspection data for long-term cooperative customers will be archived for a long time.
Q8: Can I choose different magnetic core materials?
A: All series of magnetic core materials can be selected: manganese-zinc ferrite and nickel-zinc materials are suitable for high-frequency scenarios; iron-silicon-aluminum and iron powder cores are used for large current inductors; cold-rolled silicon steel sheets are used for low-frequency transformers. We will select the optimal magnetic core based on loss, current, and usage frequency requirements.

Why choose us

1. Comprehensive after-sales service:
The company adheres to the principle of relying on the rich experience of its technical staff, complete production equipment and scientific management. With reasonable prices, warm services, it has won the trust and cooperation of customers both at home and abroad.
2. Focus on high-quality transformers:
The company has complete production and processing equipment, strict management system, professional technology and production personnel. The equipment is complete, and it specializes in processing and manufacturing with a complete production process. Its strength and product quality have been recognized in the industry.
3. Complete product range:
The company adheres to the concept of innovation and pragmatism, and is committed to the research, production and sales of ring transformers. Currently, the main products include low-frequency transformers, reverse transformers, 220V to 110V power voltage conversion transformers, power transformers, ring-type transformers, cylindrical transformers, etc.
4. Strong production conditions:
We rely on a large-scale, automated production base, advanced technology and strict quality management, which have created strong production capacity and stable product quality. We can provide customers with timely and reliable supply guarantees and formulate exclusive solutions for different usage scenarios.