Applicability
The TGDC3 series variable autotransformers are known for their waveform fidelity, compact size, lightweight design, high efficiency, ease of operation, and reliability. These transformers are suitable for long-term stable operation and are widely used for voltage regulation, temperature control, light adjustment, power control, metallurgical instruments, electromechanical manufacturing, light industry, scientific experiments, public utilities, and household appliances. They are the ideal solution for AC voltage regulation.
Product Features
- Operating Frequency: 50/60Hz
- Efficiency: 95%
- Waveform Distortion: No additional distortion
- Temperature Rise: <60°C
- Electrical Strength: 2000V/min
- Insulation Resistance: Single-phase >5MΩ, Three-phase >2MΩ
Environmental Requirements:
- Maximum Ambient Temperature: +40°C
- Minimum Ambient Temperature: -5°C
- Installation Altitude: Not exceeding 1000 meters
- Relative Humidity: In humid months, the average relative humidity is 90%, with an average air temperature of 25°C
- Power Supply Voltage Waveform: Sine wave or sine-like waveform
- Installation Environment: Indoor, with no gases, steam, chemical deposits, dust, dirt, or other media that may affect the insulation performance of the voltage regulator. No significant vibrations or bumps.
Product Specifications
| Model | Input Voltage | Adjustable Output Voltage | Max Current (A) | Dimensions (mm) L×W×H |
|---|---|---|---|---|
| TDGC3-500VA | 220V | 0-300V | 1.6 | 190215150 |
| TDGC3-1000VA | 220V | 0-300V | 3.3 | 225250180 |
| TDGC3-2000VA | 220V | 0-300V | 6.6 | 224205179 |
| TDGC3-3000VA | 220V | 0-300V | 10 | 235285230 |
| TDGC3-5000VA | 220V | 0-300V | 16.6 | 230318270 |
Product analysis

① Portable Handle
② Metal Case
③ Digital Display
④ Dial
⑤ Knob
⑥ Heat sink
⑦ Fuse
⑧ Switch
Variable transformer diagram
Formula for Calculating Loadable Power
The maximum loadable power based on the corresponding voltage can be calculated using the formula:
Output Loadable Power (W) = Output Voltage (V) × Max Current (A)
This flexibility in voltage adjustment allows the TGDC3 series transformer to meet a wide range of industrial and domestic applications, providing precise control and stable voltage regulation.







