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Manual 5KVA 220V Variable Transformer
Product Overview
Our Manual 5KVA 220V Variable Transformer (Model TDGC2-5KVA) is an energy-saving manually adjustable AC voltage regulator, developed and manufactured by Shanghai Lepus Electrical Equipment Co., Ltd. This TDGC2 series contact-type variac is purpose-built for industrial, laboratory, and field scenarios requiring precise manual output voltage adjustment, fully compliant with JB/T 100-1-2001 standards. It delivers full-capacity operation, high efficiency, zero additional waveform distortion, and strong instantaneous overload capability for continuous long-term duty. Widely used for voltage regulation, temperature control, motor speed adjustment, dimming, and power control, it is the ideal power solution for motor testing, voltage test benches, factory power systems, CNC machines, photovoltaic systems, precision equipment, generators, and EV charging stations worldwide.
Key Features & Advantages
- High Precision & Wide Regulation Range: 0-250VAC adjustable output with ±2% accuracy, supporting 50/60Hz frequency and full compatibility with resistive, inductive, and capacitive industrial loads.
- Premium Core Components: Pure copper coil with microcomputer control board, paired with high-conductivity double carbon brushes for stable voltage regulation, low losses, and high working efficiency.
- Zero Waveform Distortion: No additional output waveform distortion, ensuring clean power supply for sensitive precision instruments and test equipment without signal interference.
- Intuitive Operation & Real-Time Monitoring: Simple rotary knob for manual voltage adjustment, with a digital display providing real-time voltage data tracking and reliable high-insulation terminals for safe operation.
- Durable Industrial Design: Sturdy metallic enclosure, 2500V dielectric strength, stable operation in -15℃ to +45℃ environments, with long service life and high reliability for harsh industrial settings.
Why Choose Us
As a professional electrical equipment manufacturer from Shanghai, China, we offer factory-direct pricing with no middleman markup for global clients. We provide full OEM/ODM services, including custom voltage parameters, capacity, appearance, branding, and packaging, plus free professional product photography. Every unit undergoes strict full-stage quality inspection from raw material intake to final assembly, with 100% pre-shipment testing to ensure zero defects. We support flexible global shipping via sea, air, land, express, and railway, covering all mainstream international trade terms. Backed by lifetime free technical guidance, video installation support, and on-site engineer services, we boast a monthly capacity of 10,000 units for small-power products and 2,000 units for large-power models, with a minimum order quantity of just 1 set.
Technical Specifications
| Parameter |
Details |
| Product Name |
Manual 5KVA 220V Variable Transformer |
| Model |
TDGC2-5KVA (Customizable) |
| Rated Capacity |
5KVA (Customizable) |
| Working Frequency |
50/60Hz |
| Input Voltage |
220VAC (Customizable) |
| Output Voltage |
0-250VAC Adjustable (Customizable) |
| Output Accuracy |
±2% |
| Dielectric Strength |
2500V for 1 minute |
| Display System |
Digital Display |
| Waveform Distortion |
No additional waveform distortion |
| Working Temperature |
-15℃ ~ +45℃ |
| Relative Humidity |
20% - 90% |


Frequently Asked Questions (10 Items)
- How long is the lead time?
3-7 working days for standard 5KVA products; 10-30 days for custom orders depending on quantity and requirements.
- How do you control product quality?
We conduct professional quality inspection at every stage from raw material intake to manufacturing, and only ship products meeting all quality standards.
- What are your payment terms?
30% deposit for standard products, 50% advance for custom products, with the full balance paid before shipment.
- Do you provide technical support for product installation?
Yes, our professional team provides full installation guidance via video call, telephone, or on-site engineer service.
- What packaging do you use for your products?
This 5KVA variable transformer uses high-strength cartons, large products use heavy-duty wooden cases, with custom packaging available.
- Can you put our custom logo on the product?
Yes, we accept full OEM and ODM services, with custom logo placement on products, manuals, and packaging for qualified orders.
- Where is your major market?
Our products are sold globally, covering Central Asia, East Asia, South Asia, Africa, South America, and North America.
- What is your production capacity?
Up to 10,000 units monthly for small-power products, and 2,000 units monthly for larger-power models.
- What is your minimum order quantity (MOQ)?
Our minimum order quantity is 1 set, supporting both sample testing and bulk purchase.
- Can we customize the input and output voltage range?
Yes, we fully support custom voltage parameters, capacity, and enclosure design to fit your specific industrial and testing application needs.