Variac SUNTEK GRAY Series — A New Standard of Precision and Convenience

What Makes the SUNTEK GRAY Series Variac Superior to Competitors?

1. Ready to Use Right Out of the Box
The SUNTEK GRAY Series Variac does not require additional assembly or the purchase of extra components. Everything needed for connection is already included in the package. You simply take it out of the box, plug it in, and the device is fully ready for operation. This saves time, reduces the chance of connection errors, and eliminates the need to search for extra modules or connectors.

2. Digital Display on the Front Panel — Full Real-Time Control
Most analogs are equipped only with pointer voltmeters or basic output voltage information. The SUNTEK GRAY Series Variacs offer a modern solution with a digital display:

Input Voltage — You always know what voltage is coming in.

Output Voltage — Precise adjustment without guessing.

Load Current — Complete control over energy consumption.

Power Factor (PF) — Understand how efficiently energy is being used.

Use Case Example:

At a production facility in Saint Petersburg, SUNTEK GRAY Series Variacs are used for testing equipment that requires a perfect 220 V. Thanks to the digital display, the engineer sees all parameters in real-time and can instantly adjust them when needed. This speeds up the testing process by almost 20%.

3. Smooth Voltage Adjustment from 0 to 300 V
Unlike models with stepwise adjustment, the SUNTEK GRAY Series Variacs provide fully smooth voltage changes. This is crucial when working with sensitive devices, laboratory power supplies, medical equipment, or test stands.

Use Case Example:
In a laboratory at a Moscow plant, engineers were setting up test stand modes. With the transition to the SUNTEK GRAY Series, there was no more need to constantly check the voltage with a multimeter — everything is displayed on the screen.

4. All Control and Indication Elements — on the Front Panel
The control panel of the SUNTEK GRAY Series Variac is thoughtfully designed:

Convenient arrangement of regulators;

Full access to the display and terminals;

Intuitive controls that are easy to understand, even for beginners.

You don’t need to turn the device around, search for connectors, or stretch for wires — everything is accessible with just a simple hand movement.

5. Two-Year Warranty — Reliability Proven Over Time
SUNTEK is so confident in its devices that it provides a 2-year warranty on the GRAY Series Variacs. This is not just words: if necessary, maintenance or replacement is carried out promptly and without unnecessary questions.

Customer Review:
“We use SUNTEK GRAY Series Variacs in the lab for testing stabilizers. Precise adjustment and a clear display simplify the workflow. There have never been any failures. Plus, the 2-year warranty is a strong argument in favor of this choice.” — Alexander, Engineer, Moscow

Where Is the SUNTEK GRAY Series Variac Used?
Laboratories and Research Centers: For conducting precise tests and research.

Production Lines and Workshops: For equipment testing, parameter settings, and checking component functionality.

Educational Institutions: For classes in electrical engineering and physics, where safe work with variable voltage is required.

Test Stands: For verifying the reliability and stability of various equipment.

Private Workshops: For working with non-standard equipment, repairing vintage devices