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220V 380V To 24V 110V 12V Step Down Control Transformer EI76 For Machine Tool
Place of Origin:
China
Brand Name:
Chipsen
Certification:
UL/CUL/ISO9001/ISO14001/RoHS/Reach/IATF16949
Model Number:
EI76
Minimum Order Quantity:
1000
Price:
US$2-28
Packaging Details:
Wooden box
Delivery Time:
4-5 Weeks
Payment Terms:
T/T
Supply Ability:
10000000/Month
Inquiry Now
Get A Quote
Specifications
Highlight Features
220V step down control transformer
,110V step down control transformer
,EI76 control power transformer
Cooling Type:
Dry Type (Air)
Power Rating:
10VA - 10kVA
Efficency:
≥ 95%
Usage:
Power / Industrial / Isolation
Frequency:
50/60HZ
Core Material:
Silicon Steel (Laminated)
Phase Type:
Single Phase
Winding Material:
UL Approved Pure Copper Transformer
Product Name:
Control Transformer
Product Description
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.
- CNC Machine Tools: Powers indicator lights, cooling fans, and low-wattage auxiliary motors.
- 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
Values: Customer First, Team Cooperation, Embrace Changes, Integrity, Creative & Happy
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