Sealed Low Noise EI57 Control Transformer Stable Insulated For Industrial Panels
Price:
＄83.5-99.8/pieces
MOQ:
1K
Delivery Time:
7-14 work days (Negotiable)
Brand:
CHIPSEN
Product Description
Sealed Low Noise EI57 Control Transformer Stable Insulated for Industrial Panels
Product Overview
The EI57 encapsulated low frequency power and control transformer features blade terminals and an integrated metal mounting bracket. This transformer provides voltage conversion and electrical isolation for industrial equipment operating from 50 Hz or 60 Hz AC supplies.
Note: The nameplate shown represents one customized electrical configuration. All numerical values are typical purchasing references rather than guaranteed ratings. Final specifications must be confirmed in the approved documentation.
Industry Applications & Specifications
| Industry and Application | Common Input Requirements | Common Output Requirements | Parameters Prioritized by Buyers | Chipsen Customization Support |
|---|---|---|---|---|
| HVAC Equipment | 120 V, 208 V, 220 V, 230 V, 240 V, 277 V, 380 V, 400 V, 415 V or 480 V AC | 12 V, 24 V, 48 V or customer specified AC output | VA rating, temperature rise, insulation class, mounting dimensions, continuous operation | Input taps, output voltage, VA rating, thermal protection, bracket, terminals, encapsulation |
| Industrial Control Panels | 110 V to 480 V AC at 50 Hz or 60 Hz | 12 V, 24 V, 36 V, 48 V, 110 V or 120 V AC | Regulation, isolation, dielectric strength, short circuit protection, terminal layout | Single or multiple primary windings, multiple secondary windings, terminals, mounting |
| Testing Instruments | 100 V, 115 V, 120 V, 220 V, 230 V or 240 V AC | 6 V to 48 V AC or application specific output | Low noise, voltage accuracy, leakage current, insulation, thermal stability | Electrostatic shielding, low noise winding, output tolerance, insulation system |
| Commercial Appliances | 110 V, 120 V, 220 V, 230 V or 240 V AC | 9 V, 12 V, 18 V, 24 V or 36 V AC | Compact dimensions, cost, temperature rise, terminal reliability, safety documentation | Dimensions, bracket, terminals, lead wires, fuses, thermal protectors |
| High Voltage Control Modules | 380 V, 400 V, 415 V, 440 V or 480 V AC | 12 V, 24 V, 48 V, 110 V or 120 V AC | Creepage clearance, insulation coordination, dielectric strength, temperature rise | High voltage winding, reinforced insulation, barriers, customized primary taps |
| Outdoor Electrical Control Devices | Region specific mains voltage | 12 V, 24 V or customer specified control voltage | Encapsulation, moisture resistance, corrosion resistance, operating temperature, reliability | Encapsulation material, bracket coating, terminals, environmental validation |
| Building Automation | 120 V, 208 V, 230 V, 240 V or 277 V AC | 12 V or 24 V AC | Continuous operation, efficiency, low audible noise, installation dimensions | Voltage configuration, mounting bracket, terminals, thermal protection |
| Security and Access Control | 110 V, 120 V, 220 V, 230 V or 240 V AC | 12 V, 16 V, 18 V or 24 V AC | Regulation, continuous current, temperature rise, compact installation | Output voltage, current capacity, fuse arrangement, terminal configuration |
| Medical and Laboratory Equipment | Region specific mains voltage | Application specified isolated AC output | Isolation, leakage current, thermal performance, noise, traceability | Application specific winding, insulation, shielding, testing, documentation |
| Renewable Energy Controllers | 110 V to 480 V auxiliary AC supply | 12 V, 24 V, 48 V or 110 V AC | Wide input options, insulation reliability, temperature rise, service life | Multiple voltage taps, reinforced insulation, protection devices, mounting |
| Machinery and Motor Control | 220 V, 230 V, 380 V, 400 V, 415 V, 440 V or 480 V AC | 24 V, 48 V, 110 V or 120 V AC | Inrush capability, regulation, insulation, thermal protection, vibration resistance | Primary taps, secondary voltage, VA capacity, bracket, terminal structure |
| Railway and Special Industrial Systems | Customer specified AC supply | Customer specified isolated output | Temperature range, vibration, insulation, fire performance, documentation | Special materials, validation plans, traceability, project specific testing |
Customization Parameters
| Parameter | Typical Inquiry Reference | Customization Status |
|---|---|---|
| Core Type | EI57 laminated silicon steel core | Customizable |
| Operating Frequency | 50 Hz, 60 Hz or 50 Hz and 60 Hz compatible | Customizable |
| Primary Voltage | 100 V to 480 V AC depending on insulation and winding design | Customizable |
| Secondary Voltage | 6 V to 120 V AC commonly requested | Customizable |
| Power Capacity | Approximately 10 VA to 50 VA depending on temperature rise and construction | Customizable |
| Primary Windings | Single input, dual input or multiple voltage taps | Customizable |
| Secondary Windings | Single, dual or multiple isolated outputs | Customizable |
| Voltage Regulation | Defined according to rated load and customer tolerance | Customer Specified |
| No Load Current | Controlled according to core material, voltage and frequency | Customer Specified |
| Efficiency | Optimized according to power rating, winding and temperature requirements | Customizable |
| Insulation Class | Class B, Class F or project specific system | Customizable |
| Dielectric Strength | Defined by working voltage, insulation system and safety standard | Customer Specified |
| Temperature Rise | Designed according to rated load, ambient temperature and enclosure conditions | Customer Specified |
| Operating Temperature | Standard industrial or extended temperature design | Customizable |
| Encapsulation | Partial or complete encapsulation using application appropriate compound | Customizable |
| Thermal Protection | Thermal fuse, thermostat or self resetting protector where required | Optional |
| Terminal Type | Blade terminal, PCB pin, lead wire, connector or terminal block | Customizable |
| Mounting Method | Integrated bracket, chassis mounting or customer specified fixture | Customizable |
| Electrostatic Shield | Available between primary and secondary windings | Optional |
| Dimensions | Based on EI57 platform and customer installation envelope | To Be Confirmed |
| Certification | Certification applicability must be confirmed for the exact part number | Project Dependent |
| Marking | Electrical data, logo, batch code and traceability information | Customizable |
| Packaging | Individual protection, tray, carton or customer specified packaging | Customizable |
Product Construction
| Construction Element | Description |
|---|---|
| Magnetic Core | EI57 laminated silicon steel core designed for 50 Hz and 60 Hz operation |
| Primary Winding | Copper winding configured for single voltage, dual voltage or multiple input taps |
| Secondary Winding | Single or multiple output windings developed according to voltage and current requirements |
| Bobbin | Insulating coil former selected according to temperature and insulation requirements |
| Insulation System | Interlayer insulation, barriers, sleeving, tape and margin control according to the approved design |
| Encapsulation | Insulating compound protects the winding assembly and improves environmental resistance |
| Terminals | Blade terminals, PCB pins, lead wires, connectors or customized terminals |
| Mounting Bracket | Integrated metal bracket for chassis or panel installation |
| Thermal Protection | Thermal fuse, thermostat or resettable protector available when required |
| Electrostatic Shield | Optional shield between windings for noise sensitive equipment |
| Identification Label | Customized voltage, power, wiring, batch and traceability information |
Product Characteristics
- EI57 laminated core construction for low frequency operation
- Suitable for 50 Hz and 60 Hz power systems
- Encapsulated winding assembly for improved environmental protection
- Stable voltage conversion and electrical isolation
- Low audible noise design available through core and assembly optimization
- Multiple primary voltage taps available
- Single or multiple secondary windings available
- Blade terminals for reliable electrical connection
- Integrated mounting bracket for convenient equipment installation
- Custom VA rating, voltage ratio and winding configuration
- Optional thermal fuse or temperature protector
- Optional electrostatic shielding for noise sensitive circuits
- Customized creepage clearance and insulation system
- Suitable for continuous duty industrial applications after design validation
- Custom labels, terminals, brackets, lead wires and packaging available
Applications
- HVAC control systems
- Industrial control cabinets
- Programmable logic controller panels
- Relay and contactor control circuits
- Testing and measurement instruments
- Commercial kitchen appliances
- Building automation equipment
- Security and access control systems
- High voltage control modules
- Motor control panels
- Machinery auxiliary power supplies
- Outdoor electrical control devices
- Renewable energy controllers
- Medical and laboratory equipment
- Pump and compressor controllers
- Lighting control systems
- Automation and process equipment
Quality Control
Chipsen establishes production and inspection plans according to approved electrical specifications, mechanical drawings, safety requirements and intended applications.
| Inspection Item | Inspection Purpose |
|---|---|
| Turns Ratio Test | Confirms the designed primary and secondary voltage relationship |
| No Load Voltage Test | Verifies output voltage without a connected load |
| Full Load Voltage Test | Confirms output voltage and regulation at rated load |
| No Load Current Test | Evaluates magnetic excitation and core assembly performance |
| Winding Resistance Test | Confirms winding consistency and conductor condition |
| Insulation Resistance Test | Evaluates insulation between windings, core, bracket and terminals |
| Dielectric Strength Test | Verifies the specified isolation withstand capability |
| Induced Voltage Test | Evaluates turn to turn and winding insulation integrity |
| Temperature Rise Test | Confirms thermal performance under defined load and ambient conditions |
| Power and Efficiency Test | Evaluates input loss and output performance |
| Polarity and Phase Test | Confirms winding orientation and multiwinding relationships |
| Audible Noise Inspection | Checks abnormal vibration or core noise |
| Terminal Strength Test | Evaluates the mechanical reliability of terminals |
| Dimension Inspection | Confirms compliance with the approved mechanical drawing |
| Encapsulation Inspection | Checks coverage, cracks, voids, contamination and surface condition |
| Thermal Protector Test | Verifies protection device operation where installed |
| Appearance Inspection | Confirms labeling, bracket assembly and workmanship |
| Packaging Inspection | Confirms quantity, protection, labels and shipping configuration |
Note: Automotive, medical, railway, outdoor and other special industrial applications require application specific validation. Test methods, acceptance limits and sampling plans must be confirmed in the approved quality agreement.
Why Choose Chipsen
- Customized primary and secondary voltage combinations
- Single, dual and multiple winding configurations
- Drawing based and sample based replacement development
- Encapsulated construction options for demanding environments
- Custom blade terminals, PCB pins, lead wires and connectors
- Integrated mounting bracket and mechanical customization
- Optional thermal fuse, thermostat and electrostatic shield
- Insulation and temperature rise design based on actual working conditions
- Engineering support for voltage regulation, noise and installation constraints
- Prototype development and evaluation support
- Electrical and mechanical inspection based on approved specifications
- Material and production traceability according to project requirements
- Support for industrial, HVAC, appliance, medical and special application evaluations
- Clear specification approval before mass production
Frequently Asked Questions
What information is required to customize an EI57 transformer?
Please provide the input voltage, frequency, output voltage, output current or VA rating, duty cycle, ambient temperature, maximum dimensions, mounting method, terminal arrangement, insulation requirements, protection devices, certification requirements and annual demand.
Can the EI57 transformer support multiple input voltages?
Yes. A dual primary winding or multiple voltage taps can be designed for different regional or equipment supply voltages. The required connection method must be defined in the wiring diagram.
Can multiple secondary voltages be provided?
Yes. The transformer can be designed with multiple isolated or connected secondary windings when winding space, power capacity, insulation and temperature rise permit.
What power rating can the EI57 platform provide?
The achievable VA rating depends on core material, operating frequency, input voltage, output voltage, regulation requirement, temperature rise, enclosure conditions and winding construction. Approximately 10 VA to 50 VA is a typical inquiry reference rather than a guaranteed range.
Is the transformer fully encapsulated?
The pictured product uses an encapsulated construction. The encapsulation depth, compound material and environmental performance can be customized according to the application.
Is the product waterproof?
Encapsulation can improve resistance to moisture, dust and contamination, but it does not automatically establish a waterproof rating. Any required IP level or environmental test must be defined and validated with the final installation.
Does the transformer have UL certification?
The pictured sample appears to carry a UL Recognized component marking. Certification must be confirmed for the exact part number, construction, production location and application. Certification shown on one sample must not be assumed to cover every customized EI57 design.
Can a thermal fuse be installed?
Yes. A thermal fuse, thermostat or self resetting protector can be integrated when compatible with the winding construction and customer protection requirements.
Can Chipsen reproduce an existing transformer from a sample?
Yes. Chipsen supports sample based replacement development. The sample can be evaluated for dimensions, winding ratio, resistance, terminals, mounting and construction. Actual circuit and load conditions are still required for correct thermal and insulation design.
Can the terminal arrangement be changed?
Yes. Blade terminals, PCB pins, lead wires, connectors, terminal blocks and customized terminal layouts can be evaluated.
Can the transformer be designed for outdoor equipment?
Yes. Encapsulation materials, corrosion resistant brackets, extended temperature materials and environmental testing can be evaluated. Final suitability depends on the equipment enclosure and specified environmental requirements.
Can the transformer operate continuously?
A continuous duty design can be developed when the rated load, ambient temperature, enclosure ventilation, insulation class and maximum temperature rise are provided and validated.
Are the specifications on this page guaranteed?
No. They are typical engineering and purchasing references. Only parameters stated in the approved drawing, product specification and validation documents are guaranteed for the final product.
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Company
Dongguan Chipsen Electronics Technology Co., Ltd.
Location
No. 234, Changhuang Road, Changping Town, 523586, Dongguan, Guangdong, China
Contact Person
Nick Cheng