The TDGC2 and TDGC2J Series single-phase contact voltage regulators are engineered around an advanced, high-efficiency adjustable autotransformer compensation structure. The core assembly features a premium toroidal silicon steel core with high-grade insulated copper wire wound uniformly around its circumference.
A precision-machined, high-conductivity carbon brush maintains uniform contact with the winding's polished outer surface under calibrated spring pressure. Turning the rotary handwheel drives the brush carriage smoothly along the coil track, shifting the brush contact point and continuously adjusting the turns ratio between the primary and secondary windings. This allows smooth, stepless voltage adjustment from 0V to 250V AC across the entire regulation range without interruption.
Direct autotransformer tap variation preserves a pure sinusoidal AC waveform identical to the utility supply, avoiding harmonic pollution, electrical noise, or interference for sensitive electronic instruments.
Delivers continuous, infinitely variable voltage adjustment from 0V up to 250V (rated 220V input), providing precise voltage calibration without discrete steps or abrupt electrical switching transients.
The seamless toroidal core minimizes magnetic leakage and eddy-current losses, delivering high operational efficiency (>90% under full load) and minimal heat dissipation.
Toroidal autotransformer geometry substantially reduces volume and weight compared to conventional transformers, making benchtop installation or cabinet integration straightforward.
High-grade electrographitic carbon brushes and natural convection heat dissipation ensure dependable, maintenance-free, long-duration continuous operation under heavy industrial loads.
Equipped with an intuitive graduated rotary dial scale and a high-visibility pointer (or integrated voltmeter), it provides clear visual feedback and effortless voltage adjustment for operators.
As ideal AC regulated power supplies, the TDGC2 and TDGC2J series voltage regulators are widely applied across manufacturing industries, laboratory testing facilities, and commercial infrastructures:
| Rated Input Voltage | 220V AC ± 10% | Output Voltage Range | 0V ~ 250V AC (Steplessly Adjustable) |
| Number of Phases | Single-Phase (1Φ) | Rated Frequency | 50 Hz / 60 Hz |
| Waveform Distortion | No additional waveform distortion (Pure Sine Wave) | Electrical Efficiency | > 90% (At rated capacity) |
| Insulation Resistance | ≥ 5 MΩ (500V DC Megger) | Dielectric Strength | 2000V AC / 1 min (No flashover or breakdown) |
| Ambient Temperature | -5°C to +40°C | Relative Humidity | ≤ 90% (at +25°C, non-condensing) |
| Installation Altitude | ≤ 1000 m (Derate for higher elevations) | Winding Temperature Rise | < 60°C (Resistance method) |
| Specification & Capacity | Max Output Capacity (kVA) |
Rated Input Voltage (V) |
Rated Output Voltage (V) |
Max Output Current (A) |
Overall Size (W×D×L) (mm) |
TQY (PC/Carton) |
Package Size/Set (W×D×L) (mm) |
Net Weight (kg) |
Gross Weight (kg) |
Nr of Phase |
|---|---|---|---|---|---|---|---|---|---|---|
| TDGC2-0.2 | 0.2 | 220V | 0-250V | 0.8 | 105 × 130 × 130 | 12 | 380 × 347 × 350 | 25 | 26.5 | 1 |
| TDGC2-0.5 | 0.5 | 2 | 125 × 150 × 130 | 8 | 380 × 347 × 350 | 27 | 28 | |||
| TDGC2-1 | 1.0 | 4 | 180 × 200 × 210 | 4 | 435 × 255 × 465 | 25 | 26 | |||
| TDGC2-2 | 2.0 | 8 | 180 × 200 × 210 | 4 | 435 × 255 × 465 | 31.5 | 33 | |||
| TDGC2-3 | 3.0 | 12 | 210 × 230 × 235 | 2 | 490 × 275 × 270 | 21.5 | 23 | |||
| TDGC2-5 | 5.0 | 20 | 240 × 285 × 250 | 1 | 330 × 275 × 290 | 17.5 | 18 | |||
| TDGC2-10 | 10.0 | 40 | 240 × 335 × 400 | 1 | 390 × 295 × 505 | 34 | 40 | |||
| TDGC2-15 | 15.0 | 60 | 240 × 335 × 560 | 1 | 390 × 295 × 650 | 50 | 58 | |||
| TDGC2-20 | 20.0 | 80 | 240 × 340 × 590 | 1 | 390 × 295 × 650 | 53 | 60 |
| Specification & Capacity | Max Output Capacity (kVA) |
Rated Input Voltage (V) |
Rated Output Voltage (V) |
Max Output Current (A) |
Overall Size (W×D×L) (mm) |
TQY (PC/Carton) |
Package Size/Set (W×D×L) (mm) |
Net Weight (kg) |
Gross Weight (kg) |
Nr of Phase |
|---|---|---|---|---|---|---|---|---|---|---|
| TDGC2J-0.5 | 0.5 | 220V | 0-250V | 2 | 130 × 150 × 160 | 8 | 330 × 295 × 455 | 30 | 31.5 | 1 |
| TDGC2J-1 | 1.0 | 4 | 185 × 200 × 215 | 4 | 430 × 395 × 275 | 26 | 27.5 | |||
| TDGC2J-2 | 2.0 | 8 | 230 × 240 × 215 | 2 | 460 × 250 × 245 | 18 | 19.5 | |||
| TDGC2J-3 | 3.0 | 12 | 265 × 270 × 215 | 2 | 490 × 280 × 255 | 26 | 27 | |||
| TDGC2J-5 | 5.0 | 20 | 350 × 395 × 260 | 1 | 460 × 430 × 340 | 25 | 29 | |||
| TDGC2J-7 | 7.0 | 28 | 350 × 390 × 260 | 1 | 430 × 430 × 340 | 27 | 30.5 | |||
| TDGC2J-10 | 10.0 | 40 | 350 × 410 × 420 | 1 | 430 × 430 × 500 | 47.5 | 51 | |||
| TDGC2J-15 | 15.0 | 60 | 350 × 410 × 570 | 1 | 430 × 430 × 690 | 67 | 73 | |||
| TDGC2J-20 | 20.0 | 80 | 350 × 410 × 570 | 1 | 430 × 430 × 690 | 80 | 86 | |||
| TDGC2J-30 | 30.0 | 120 | 350 × 410 × 1080 | 1 | 440 × 440 × 1170 | 138 | 150 |
Note 1: TDGC2 series products share identical core electrical principles and functional specifications with the TDGC2J series.
Note 2: The overall dimensions, packaging sizes, and weights stated above are for engineering reference only. Exact fabrication tolerances and custom dimensions are available upon order confirmation.
As a certified China voltage stabilizer & contact regulator manufacturer, we offer flexible MOQ, wholesale discounts, and full OEM support.
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