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380V To 220V Isolation Three Phase Step Down Transformer EI200 High Power Dry Type
Place of Origin:
China
Brand Name:
Chipsen
Certification:
UL/CUL/ISO9001/ISO14001/RoHS/Reach/IATF16949
Model Number:
EI200
Minimum Order Quantity:
1000
Price:
US$15-280
Packaging Details:
Carton 1: 25.5 X 21.5 X 21cm Carton 2: 43.5 x 24.5 x 21 cm
Delivery Time:
4-5 Weeks
Payment Terms:
T/T
Supply Ability:
10000000/Month
Inquiry Now
Get A Quote
Specifications
Highlight Features
380V To 220V three phase step down transformer
,Isolation three phase step down transformer
,EI200 3 phase step down transformer
Product Name:
Three Phase Transformer
Frequency:
50/60HZ
Core Material:
Silicon Steel (Laminated)
Winding Material:
UL Approved Pure Copper Transformer
Usage:
Power / Industrial / Isolation
Power Rating:
100VA - 20kVA
Cooling Type:
Dry Type (Air)
Phase Type:
3 Phase
Product Description
3 Phase EI200 Power Transformer Step Down 380V to 220V Dry Type Isolation Transformer with Pure Copper Winding
Product Overview
The Three-Phase EI200 Transformer is a heavy-duty, low-frequency power component designed for stable energy distribution in demanding industrial environments. Utilizing a high-capacity EI200 laminated silicon steel core, this transformer handles substantial power loads and serves as a critical interface for voltage step-down or isolation requirements, providing reliable and balanced three-phase output for heavy machinery and automated production systems.
Technical Specifications
| Parameter | Typical Value / Spec |
|---|---|
| Core Type | EI200 Laminated Silicon Steel |
| Phase Type | Three-Phase / 3P |
| Cooling Method | Dry Type / Natural Air Cooling (AN) |
| Structure | Open-Frame / Protective Enclosure (IP20/IP54) |
| Power Rating | 5kVA - 50kVA (Customizable) |
| Operating Frequency | 50Hz / 60Hz |
| Primary Voltage | 380V / 400V / 415V / 440V / 480V AC |
| Secondary Voltage | 200V / 208V / 220V / 380V AC |
| Hi-Pot (Isolation) | 2500V - 3500V AC / 1min |
| Efficiency | 95% - 98.5% |
| Core Material | High Permeability Silicon Steel Sheet |
| Impregnation | Vacuum Pressure Impregnation (VPI) |
| Winding Material | 100% Pure Copper (Electrolytic) |
| Insulation Class | Class B (130°C) / Class F (155°C) / Class H (180°C) |
| Operating Temp | -10°C to +40°C (Full Load) |
| Storage Temp | -25°C to +85°C |
| Compliance | CE, RoHS, ISO9001, GB/T 10228 |
Product Features
- High-Permeability Laminated Core: Constructed with premium-grade EI200 silicon steel sheets, precision-stacked to minimize magnetic leakage and ensure optimal flux density.
- 100% Pure Copper Winding: Features high-quality electrolytic copper wire with superior conductivity, ensuring low DC resistance and minimal heat generation under continuous full-load operation.
- Three-Phase Balanced Design: Optimized winding topology to ensure precise phase-to-phase voltage symmetry, vital for smooth operation of 3P motors and inductive loads.
- Dry-Type Air Cooling: Designed as an open-frame or enclosed dry-type unit, eliminating the need for oil and making it environmentally friendly and easy to maintain.
- Vacuum Impregnation (VPI): The entire assembly is vacuum-impregnated with high-grade insulating varnish to prevent moisture ingress and mechanical humming.
Why is the EI200 laminated structure preferred over toroidal or C-cores for high-wattage three-phase industrial transformers?
For heavy industrial applications (typically 5kVA to 50kVA+), the EI200 laminated structure offers superior mechanical stability and saturation control. The "I" laminations allow for intentional introduction of precise air gaps if needed to prevent DC saturation in unbalanced loads. Furthermore, the EI architecture is significantly more robust in resisting physical vibrations and thermal expansion cycles common in factory environments. It also facilitates easier cooling via natural convection due to the larger external surface area of the rectangular core compared to a compact toroidal design.
Product Applications
- CNC Machinery: Provides isolated and stable power for high-precision CNC lathes, milling machines, and machining centers.
- Servo & Motor Drive Systems: Essential for powering three-phase servo drivers and heavy-duty induction motors in automated assembly lines.
- Industrial Automation: Powers PLC cabinets, control panels, and robotic systems in automotive and manufacturing plants.
- Large-Scale Medical Equipment: Used in power rooms for MRI and X-ray machines that require high-isolation and low-noise power sources.
How does the vacuum impregnation process specifically impact the acoustic noise and thermal longevity of the EI200 transformer?
Large transformers like the EI200 are susceptible to "magnetostriction," which causes the laminations to vibrate at twice the grid frequency, creating a 100Hz/120Hz hum. Vacuum Pressure Impregnation (VPI) forces insulating resin into the microscopic gaps between the silicon steel sheets and winding layers. Once cured, it solidifies the entire structure into a single mass, virtually eliminating mechanical vibration (noise). Thermally, VPI removes air pockets that act as insulators, significantly improving heat conduction from the inner windings to the core surface, thereby extending the life of the insulation class (Class B/F/H).
Product Advantages
- Exceptional Durability: The combination of pure copper and high-grade silicon steel ensures a service life of 20+ years under proper operating conditions.
- Superior Efficiency: Optimized core geometry leads to extremely low hysteresis and eddy current losses, achieving high energy conversion rates even at variable loads.
- Enhanced Safety Isolation: Provides a high degree of electrical isolation between the primary grid and sensitive secondary equipment, protecting against surges and common-mode noise.
- Highly Customizable: Fully adaptable to global grid standards with multiple secondary taps and various enclosure ratings to suit diverse output requirements.
Company Strengths
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformers, low frequency transformers, toroidal inductors, SMD power inductors, super high current inductors, choke coils and switches. As an ISO9001, ISO14001 & IATF16949 audited company, Chipsen commits to producing environmental protection and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and we hold 21 patents.
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staff
Values: Customer First, Team Cooperation, Embrace Changes, Integrity, Creative & Happy
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