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7KVA 5KW Autotransformer Variac
Product Overview
Our 7KVA 5KW Autotransformer Variac (Model TDGC2-7KVA, fully
customizable) is a high-efficiency, energy-saving adjustable AC
voltage regulator developed and manufactured by Shanghai Lepus
Electrical Equipment Co., Ltd. As a contact-type autotransformer
variac, it is specially designed for scenarios requiring manual
voltage adjustment, fully compliant with JB/T 100-1-2001 standards.
It features full-capacity operation, high efficiency, zero
additional waveform distortion, strong instantaneous overload
capacity, and continuous working capability. Ideal for voltage
regulation, temperature control, motor speed adjustment, and power
control, it is widely used in motor testing, factory power systems,
voltage test benches, CNC machines, photovoltaic systems, precision
equipment, generators, EV charging stations, and other industrial
fields worldwide.
Key Features & Advantages
- High Precision & Wide Regulation Range: 0-250VAC adjustable output
with ±2% accuracy, supporting 50/60Hz frequency and full
compatibility with inductive, capacitive, and resistive loads,
suitable for high-power industrial applications.
- Premium Core Components: Pure copper coil controlled by a
sub-modulation microcomputer control board, paired with
high-conductivity double carbon brushes for more accurate voltage
stabilization, low energy loss, and long service life.
- Zero Waveform Distortion: No additional output waveform distortion,
ensuring stable and clean power supply for sensitive precision
instruments and testing equipment without signal interference.
- User-Friendly Operation: Simple rotary knob for manual voltage
adjustment, with a digital display for real-time working status
monitoring; reliable high-insulation terminals ensure safe and
stable operation.
- Durable Industrial Design: Sturdy metallic enclosure, 2500V
dielectric strength, stable operation in -15℃ to +45℃ environments,
with low noise and strong adaptability to harsh industrial working
conditions.
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
product parameters, appearance, LOGO, and packaging, plus free
professional product photography and video producing. Every 7KVA
5KW Autotransformer Variac undergoes strict 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 like
this autotransformer variac, with a minimum order quantity of just
1 set.
Technical Specifications
| Parameter | Details |
|---|
| Product Name | 7KVA 5KW Autotransformer Variac |
| Model | TDGC2-7KVA (Customizable) |
| Rated Capacity | 7KVA / 5KW (Customizable) |
| Working Frequency | 50/60Hz |
| Input Voltage | 220VAC (Customizable) |
| Output Voltage | 0-250VAC Adjustable (Customizable) |
| Phase | 2 Phase |
| Output Accuracy | ±2% |
| Dielectric Strength | 2500V for 1 minute |
| Display System | Digital Display |
| 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 7KVA 5KW 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 this product? This 7KVA autotransformer variac uses heavy-duty wooden cases for
protection, with custom packaging available upon request.
- 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 for this model? We can produce up to 2,000 units monthly for large-power products
like the 7KVA 5KW Autotransformer Variac.
- 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 rated capacity and voltage range? Yes, we fully support custom capacity, input/output voltage, and
enclosure design to fit your specific industrial and testing
application needs.