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{"title":"50kVA 80kVA 100kVA Power Three Phase Transformer EI240 For Industrial Inverters","imgUrl":"https:\/\/img.chinax.com\/nimg\/6b\/be\/003271b5c46c1fc11353da79730e-200x200-1\/50kva_80kva_100kva_power_three_phase_transformer_ei240_for_industrial_inverters.jpg","attrs":{"Certification":"UL\/CUL\/ISO9001\/ISO14001\/RoHS\/Reach\/IATF16949","Core material":"High Permeability Laminated Silicon Steel","Model Number":"EI240","Frequency":"50\/60HZ"}}
{"title":"Custom 380V 480V 50Hz 60Hz Enclosed Three Phase Transformer For Factory","imgUrl":"https:\/\/img.chinax.com\/nimg\/93\/ba\/515307f241351b512bba8c618bfe-200x200-1\/custom_380v_480v_50hz_60hz_enclosed_three_phase_transformer_for_factory_equipment.jpg","attrs":{"Phases":"3","Certification":"UL\/ISO9001\/ISO14001\/RoHS\/Reach","Rated voltage":"220 V \/ 380 V \/ 400 V \/ 480 V \/ 690 V AC, other classes on request","Model Number":"EI450"}}
{"title":"High Power Low Noise E250 Three Phase Transformer Stable Efficient For Machinery","imgUrl":"https:\/\/img.chinax.com\/nimg\/55\/b0\/8feeb61d430ee23f7b0f34ce5de0-200x200-1\/high_power_low_noise_e250_three_phase_transformer_stable_efficient_for_machinery.jpg","attrs":{"Certification":"UL\/cUL Class B\/F\/H, VDE, CQC","Efficiency":"Up to 98%","Model Number":"E250","Output Voltage":"24-600KV and can be Customized"}}
{"title":"High Efficiency Input Line Harmonic Filter Three Phase Reactor For VFD Inverter","imgUrl":"https:\/\/img.chinax.com\/nimg\/8c\/7c\/266b43cdb4a15407001c69527221-200x200-1\/high_efficiency_input_line_harmonic_filter_three_phase_reactor_for_vfd_inverter_system.jpg","attrs":{"Certification":"UL\/cUL Class B\/F\/H, VDE, CQC","Current Superposition \/ Saturation":"Inductance Drop < 10% @ 1.5x Rated Current","Model Number":"EI200","Compliance & Safety Certificates":"UL\/cUL Listed, CE, RoHS, REACH, IATF16949"}}
{"title":"Robust High Power EI450 Three Phase Transformer Stable Efficient Power Systems","imgUrl":"https:\/\/img.chinax.com\/nimg\/59\/b8\/f0b4d413fa02ccbd152b542245b5-200x200-1\/robust_high_power_ei450_three_phase_transformer_stable_efficient_power_systems.jpg","attrs":{"Certification":"UL\/cUL Class B\/F\/H, VDE, CQC","Output Current":"300A","Model Number":"EI450","Winding material":"Copper wire"}}
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
Chipsen Electronics - Supplier to Fortune Global 500 Companies
Magnetic Components Engineered for Performance & Reliability
Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches.
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Chipsen Electronics - Supplier to Fortune Global 500 Companies
Magnetic Components Engineered for Performance & Reliability
Founded in 2007, Dongguan Chipsen Electronics Technology Co., Ltd. is a professional manufacturer specializing in magnetic components and micro switches.
...
