Medium Voltage Control Transformers
Advanced AC-to-AC control transformers engineered for precision, reliability, and safety in demanding industrial environments. Fully customizable to meet your specific application requirements.
Global Partnership
Precision Engineered Control Transformers
The LINKWELL JBK5 Series represents the pinnacle of control transformer technology for industrial applications. Designed as AC-to-AC transformers with configurable winding ratings, each unit can be custom-built to meet specific client requirements.
These transformers are extensively utilized in electrical control cabinets, machining centers, and various machinery where superior safety and fire-resistance standards are paramount. They serve critical functions as power conversion sources for lighting systems, motor power supplies, and rectifier circuits.
LINKWELL transformers are meticulously crafted with attention to detail. Each unit features hand-wound pure copper windings and high-grade silicon steel cores, all assembled with precision welding techniques. Our commitment to quality ensures exceptional performance and longevity in even the most demanding operational environments.
Engineering Excellence
The JBK5 Series incorporates advanced technologies and premium materials for superior performance and durability.
Premium Copper Windings
All JBK5 transformers utilize high-temperature resistant enameled copper wire for windings, ensuring maximum efficiency, reduced energy loss, and extended operational lifespan.
Advanced Flame-Retardant Terminals
Our proprietary flame-retardant terminal blocks are integrated directly into the transformer frame, achieving an IP20 protection rating for enhanced safety and durability.
High-Grade Silicon Steel Core
The transformer core is constructed from premium high-silicon steel sheets, delivering minimal temperature rise, reduced core losses, and exceptional overload capacity.
Robust Structural Design
The core and baseplate are permanently joined using TIG welding or stainless steel fastening techniques (depending on power rating), creating a unified structure that maximizes grounding reliability.
Precision Manufacturing
Single-piece formed baseplates guarantee exact mounting dimensions, while our meticulous assembly process ensures consistent quality across all production units.
Comprehensive Testing Protocol
Every completed transformer undergoes rigorous testing to verify voltage output, no-load current, no-load losses, short-circuit impedance, and acoustic noise levels against strict quality standards.
Technical Specifications
Detailed performance characteristics and construction details of the JBK5 Series
Primary Voltage
110V, 220V, 380V, 415V, 440V (Customizable)
Secondary Voltage
6V, 12V, 24V, 36V, 48V, 110V, 127V, 220V
Power Rating
25VA to 5000VA (Standard Range)
Insulation Class
Class B (130°C) or Class F (155°C)
Protection Rating
IP20 (Standard), Higher ratings available
Frequency
50/60 Hz (Dual Frequency)
Industrial Applications
JBK5 Series transformers are engineered for reliability in critical industrial environments
Machine Tool Controls
CNC machines, lathes, milling machines, grinders, and other precision manufacturing equipment
Control Cabinets & Panels
Industrial control systems, PLC panels, automation cabinets, and electrical distribution boards
Industrial Automation
Robotic systems, conveyor controls, assembly line automation, and material handling equipment
Manufacturing Machinery
Packaging machines, printing presses, textile machinery, plastic injection molding equipment
Safety & Control Circuits
Emergency stop circuits, safety relay systems, lighting controls, and alarm systems
Power Conversion Systems
Rectifier power supplies, UPS systems, voltage stabilizers, and special power applications
Quality Assurance Process
JBK5 Series transformers are engineered for reliability in critical industrial environments
Component Inspection
Verification of all incoming materials including copper wire, silicon steel, insulation, and terminals
Precision Winding
Automated winding machines with tension control ensure consistent coil construction
Assembly & Integration
Skilled technicians assemble cores, windings, and terminal blocks with precision alignment
Vacuum Impregnation
Varnish impregnation under vacuum ensures complete insulation and protection
Comprehensive Testing
Each unit undergoes electrical, thermal, and acoustic performance verification
Final Testing Protocol
Completed transformers are placed on test benches where multiple parameters are meticulously measured: output voltage accuracy, no-load current, no-load losses, short-circuit impedance, and acoustic noise levels. Each parameter must fall within established tolerance limits before the unit is approved for shipment. This multi-stage verification ensures all JBK5 Series transformers meet or exceed specified performance standards.
Customization Capabilities
Tailor your control transformers to meet specific application requirements
Voltage Configuration
Custom primary and secondary voltage combinations to match your specific power system requirements
Multiple Windings
Transformers with multiple secondary windings providing different voltage outputs from a single primary
Enclosure Options
Various enclosure types including open frame, covered, or fully encapsulated designs
Terminal Variations
Different terminal types including screw terminals, quick-connect, or lead wire configurations
Mounting Configurations
Custom mounting brackets, flange designs, or panel-mount arrangements
Special Environmental
Transformers designed for high humidity, corrosive atmospheres, or extreme temperature applications
Regulatory Compliance
Custom designs to meet specific international standards including UL, CE, IEC, and GB requirements
Labeling & Marking
Custom nameplates, warning labels, wiring diagrams, and identification markings