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{"title":"200VA 250VA 300VA EI96 Control Transformer For Machine Tool Industrial Control","imgUrl":"https:\/\/img.chinax.com\/nimg\/51\/19\/22f1746a5d0e682a024f7e6891df-200x200-1\/200va_250va_300va_ei96_control_transformer_for_machine_tool_industrial_control.jpg","attrs":{"Certification":"UL\/CUL\/ISO9001\/ISO14001\/RoHS\/Reach\/IATF16949","Core material":"Silicon Steel (Laminated)","Model Number":"EI96","Cooling type":"Dry Type (Air)"}}
{"title":"High Power Low Noise EI96 Control Transformer Stable Efficient For Machine Tools","imgUrl":"https:\/\/img.chinax.com\/nimg\/0f\/c5\/f5934f84c47a60a6044d61863deb-200x200-1\/high_power_low_noise_ei96_control_transformer_stable_efficient_for_machine_tools.jpg","attrs":{"Applications":"Machine tools","Place of Origin":"China","Standardscompliance":"UL, CSA","Model Number":"EI96"}}
{"title":"Reliable Compact EI96 Low Frequency Transformer Stable Safe Industrial Controls","imgUrl":"https:\/\/img.chinax.com\/nimg\/7f\/5e\/fa7ba79d5bcbae7236975b49350f-200x200-1\/reliable_compact_ei96_low_frequency_transformer_stable_safe_industrial_controls.jpg","attrs":{"Certification":"UL\/cUL Class B\/F\/H, VDE, CQC","Rated Capacity":"5VA-800KVA","Model Number":"EI96","Powerrating":"50VA"}}
220V 380V to 24V 110V 12V Step Down Control Transformer EI76 Laminated Core Isolation Transformer with 100% Pure Copper Winding
EI76 Industrial Control Transformer: The Compact Standard for Reliable Automation
Product Introduction
The EI76 Control Transformer is a high-precision, low-frequency power solution designed to provide stable operating voltages for industrial control circuits. Built on a standardized EI76 laminated silicon steel core, this series typically handles power capacities ranging from 50VA to 150VA. It acts as a robust isolation barrier, stepping down primary utility voltages (such as 380V, 415V, or 440V) to common control levels (24V, 110V, or 220V), ensuring that sensitive electronic controllers and actuators are shielded from grid fluctuations and noise.
Parameter
Typical Value / Spec
Core Type
EI76 Laminated Silicon Steel
Standard Series
BK / JBK3 / JBK5 / JBK6
Mounting Type
Base Plate Mounting (Vertical/Horizontal)
Dimensions
Approx. 76mm x 70mm x 85mm (Standard)
Rated Capacity
50VA / 60VA / 100VA / 150VA
Operating Frequency
50Hz / 60Hz
Primary Voltage (Input)
220V / 380V / 415V / 440V AC
Secondary Voltage (Output)
12V / 24V / 36V / 48V / 110V / 220V AC
Hi-Pot (Isolation)
2500V AC / 1min
Efficiency
>= 92%
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)
Operating Temp
-5°C to +40°C
Storage Temp
-25°C to +85°C
Compliance
CE, RoHS, ISO9001, IEC 61558
Product Features
High-Permeability Laminated Core: Utilizes premium-grade EI76 silicon steel sheets, precision-stacked to minimize magnetic leakage and ensure optimal flux density.
100% Electrolytic Copper Windings: Features high-quality pure copper wire with superior conductivity, ensuring low DC resistance (DCR) and minimal heat generation under continuous load.
Enhanced Dielectric Strength: Designed with reinforced insulation between primary and secondary windings, capable of withstanding high-voltage surges and ensuring operator safety.
Compact Mounting Design: The EI76 geometry provides an excellent power-to-volume ratio, making it ideal for space-constrained electrical cabinets and DIN-rail integrated systems.
Technical FAQ 1: Why is the Vacuum Pressure Impregnation (VPI) process particularly important for EI76 transformers in industrial environments?
Answer: In industrial settings, transformers are often exposed to humidity, dust, and constant mechanical vibrations from nearby motors. The VPI (Vacuum Pressure Impregnation) process forces high-grade insulating resin into the innermost layers of the copper windings and the gaps between the laminations. Once cured, it creates a solid, moisture-proof mass. This not only prevents internal electrical arcing due to humidity but also effectively "locks" the laminations together, virtually eliminating the 50Hz/60Hz mechanical humming noise and significantly extending the transformer's service life in harsh conditions.
Product Applications
Automation Control Panels: Provides isolated power for PLCs, HMI touchscreens, and sensor modules.
Relay & Contactor Circuits: The primary power source for engaging electromagnetic contactors and control relays in motor starter circuits.
Precision Instruments: Used in diagnostic and testing equipment where high isolation and low EMI are required.
Technical FAQ 2: How does the EI76 design manage the "Inrush Current" peaks when engaging large contactor coils?
Answer: Inductive loads like contactors require a massive surge of current (inrush) to pull in their armature, often 8-10 times their steady-state current. The EI76 is designed with a low-impedance winding structure and a magnetic core that has a generous saturation margin. This allows the transformer to deliver these instantaneous peak loads without a significant secondary voltage sag. By maintaining voltage stability during the contactor's "pick-up" phase, the EI76 prevents contact "chatter" and ensures the reliable engagement of all inductive components in the control string.
Product Advantages
Unrivaled Thermal Performance: The open-frame design facilitates natural convection cooling, allowing the transformer to maintain stable electrical parameters during 24/7 continuous operation.
Extreme Space Efficiency: As one of the most compact industrial-grade sizes, the EI76 allows for high component density on the mounting plate, reducing the overall size of the control cabinet.
Low Acoustic Signature: Precision clamping and high-quality laminations ensure a virtually silent operation, meeting strict low-noise requirements for lab and medical environments.
International Compliance: Manufactured to meet global safety and quality standards, including CE, RoHS, and ISO9001, facilitating easy integration into products destined for international export to European and North American markets.
Company Strengths
Chipsen Electronics Technology Co., Ltd., established in 2000, is a specialized manufacturer of high frequency transformer, low frequency transformer, toroidal inductor, SMD power inductor, super high current inductor, choke coil and switch. Chipsen has got a good reputation in domestic and oversea markets which include North & South America, Europe and Southeast Asia. Chipsen possesses a professional management team, as an ISO9001, ISO14001 & IATF16949 audited company, which always commits to producing environmental protection and qualified products. Our products are certified by UL Class B/Class F/Class H, CQC and RoHS, and obtained 21 patents. These achievements mainly come from our strong R&D team, providing various solutions for temperature decreasing, noise cancellation and coupled radiation conductivity. Our products widely used in various fields of new energy, PV, UPS, Robotics, smart home, security systems, health care and communication.
Vision: To Be Global Transformer Brand Supplier
Mission: Create Values for Customers and Society, Grow with Customers and Staffs
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.
...
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.
...
