Product Overview

The TDGC2 Series Single-Phase Variable autotransformer is a high-performance voltage regulation solution designed for laboratory testing, equipment commissioning, educational demonstrations, and electrical research applications.

Combining stepless voltage adjustment, electrical isolation, and precise digital voltage monitoring, this transformer provides a safe, flexible, and reliable method for controlling single-phase AC voltage. The dual-winding isolation design offers enhanced protection for both operators and connected equipment, making it ideal for sensitive testing and development environments.

Key Features & Advantages

Smooth & Continuous Voltage Adjustment

The TDGC2 transformer accepts a standard:

• Input Voltage: 220V AC ±10%

and provides:

• Adjustable Output Voltage: 0–250V AC

Output voltage can be smoothly adjusted using the front-panel control knob, allowing precise voltage regulation for different loads and testing requirements.

As output voltage decreases, the available output power decreases proportionally, enabling safe operation across various testing conditions.

Pure Copper Dual-Winding Isolation Design

Unlike conventional autotransformers, this model features independent primary and secondary windings, providing true electrical isolation between input and output circuits.

Benefits include:

• Enhanced operator safety

• Reduced electric shock risk

• Isolation from power line interference

• Suppression of electrical noise and leakage currents

• Improved protection for sensitive equipment

The transformer uses oversized pure copper windings for:

• Excellent conductivity

• Low resistance loss

• Efficient heat dissipation

• Stable long-term operation

• Extended service life

The maximum temperature rise remains ≤60°C during normal operation.

LCD Digital Voltage Display

Equipped with a built-in LCD, the transformer provides:

• Real-time output voltage monitoring

• Clear and accurate readings

• Convenient voltage adjustment verification

• Early detection of overvoltage conditions

This improves testing accuracy and helps protect connected equipment.

Enhanced Safety Protection

The transformer incorporates multiple safety features, including:

• Electrical isolation protection

• Built-in protective circuitry

• Flexible terminal-type output connections

• Reliable operation under varying load conditions

The isolated output structure significantly improves safety compared with standard variable autotransformers.

Convenient Wiring & Operation

Designed with terminal block output connections for:

• Flexible wiring options

• Easy installation

• Secure electrical connections

• Compatibility with laboratory and industrial setups

Simple controls make the unit suitable for both professional engineers and educational users.

Technical Specifications

Typical Applications

✅ Laboratory testing and calibration
✅ Electrical equipment commissioning
✅ Scientific research and development
✅ Educational electrical training
✅ Low-voltage appliance testing
✅ Product quality inspection
✅ Instrument and sensor testing
✅ Maintenance and repair workshops

Why Choose TDGC2 Isolation Variable Transformers?

✔ True electrical isolation for enhanced safety
✔ Smooth 0–250V voltage adjustment
✔ Pure copper dual-winding construction
✔ LCD digital voltage monitoring
✔ Low temperature rise and stable operation
✔ Suitable for laboratory, industrial, and educational applications
✔ Reliable protection for sensitive equipment

Contact Us for Custom Variable Autotransformer Solutions

Looking for a reliable single-phase variable autotransformer for testing, laboratory, or industrial applications?

We provide:

• OEM & customized transformer manufacturing

• Custom voltage and capacity configurations

• Engineering support and technical consultation

• Fast production and worldwide shipping

📩 Contact us today with your voltage and power requirements for a fast quotation and professional recommendation.