Description
■ Application
The product is special auto transformer which is connected in different forms.Its output voltage can be regulated smoothly and continuously from zero to the maximum value.The provision of and indication meter is made for the models TDGC2J 0.5, 1, 2, 3, 5KVA.AI models find popular application in industries,agriculture and scientific researches,and are particularly suited to serve as ancillary facilities for such equipment as various machine tools,transistor curve tracers,projecting TV sets,and analytical instruments in petroleum industry,etc.
■ Output Current
| Model | Phase | Frequency(Hz) | Input voltage(V) | Cutput voltage(V) | Max.Output current(A) | Size/Package(cm) | Qty |
| TDGC2J-0.5KVA | 1 | 50/60 | 110 | 0-130 | 5 | 52×20×34 | 4 |
| TDGC2J-1KVA | 9 | 41.5×24×43 | 2 | ||||
| TDGC2J-2KVA | 18 | 41.5×24×43 | 2 | ||||
| TDGC2J-3KVA | 27 | 66.5×26×49.5 | 2 | ||||
| TDGC2J-5KVA | 45 | 33×28×30 | 1 |
Specifications
Technical Parameter of Johsun TDGC2J Single Phase Manual Voltage Regulator Contact Voltage Regulator American Style
- Power:500VA-5000VA
- Input Voltage:110VAC(Other Voltages Customization Available)
- Output Voltage:0-130VAC(Other Voltages Customization Available)
- Number of Phases:1
- Type:Single Phase Manual Voltage Regulator Contact Voltage Regulator American Style
- Input Connection:Plug/Terminal
- Socket On the Body:Yes
- Efficiency:80%
- Power Supply Frequency:50/60Hz
- Operatin Temperature Rate:0℃~+40℃
- Protection:Fuse
- OEM/ODM:Accept with MOQ
- Spare Parts:Discussion
- Warranty:12 Months
■ How to Choose This Regulator
The output of a manual regulator is set by hand and can be varied smoothly and continuously from zero up to the maximum value, so the first question is not capacity but whether you need an adjustable supply at all. A fixed-ratio transformer is the cheaper answer when one voltage is required; a regulator is the right choice for calibration, development work, motor speed tests and any application where the voltage has to be dialled in. Once that is settled, size the rating from the maximum current the load will draw at the highest output voltage you intend to use.
Three points to confirm before ordering:
- the maximum output voltage and current required, since capacity is set by the product of the two;
- the input supply voltage at the installation;
- whether an output meter is needed — it is fitted as standard on the larger models in the family.
■ Using an Adjustable Output Safely
Because the knob can be turned to any position, the practical discipline is to preset the output to zero, connect the load, and bring the voltage up while watching a meter. The provision of a meter and indication makes that straightforward on the larger frames. These regulators are used in industry, agriculture and research, and are particularly suited as ancillary equipment for machine tools, curve tracers, projection television sets and analytical instruments in the petroleum sector. The output is taken from a brush contact on the winding, so periodic inspection of the brush and the track is worth including in a maintenance schedule.
■ Pricing, Ordering & Quality Assurance
Step Up & Step Down Transformer Price Range (100VA–10KVA)
Pricing for the DT/ST series depends on capacity, the input/output voltage combination you need, socket type, and whether a voltage selector or MCB protection is fitted. The table below gives indicative FOB levels so you can budget before requesting a firm quotation.
| Model | Capacity | Input / Output Voltage | Typical Application | Indicative FOB Price (per pc)* |
|---|---|---|---|---|
| ST/DT-100 | 100VA | 110V ↔ 220V selectable | Small electronics, chargers, control circuits | US$ 10–15 |
| ST/DT-200 | 200VA | 110V ↔ 220V selectable | Bench instruments, small appliances | US$ 11–16 |
| ST/DT-300 | 300VA | 110V ↔ 220V selectable | Audio equipment, laboratory benches | US$ 12-18 |
| ST/DT-500 | 500VA | 110V ↔ 220V selectable | Refrigeration units, printers, POS systems | US$ 12-20 |
| ST/DT-1000 | 1000VA | 110V ↔ 220V selectable | Power tools, kitchen equipment, single machines | US$ 21-30 |
| ST/DT-1500 | 1500VA | 110V ↔ 220V selectable | Motor-driven machines, imported appliances | US$ 23-35 |
| ST/DT-2000 | 2000VA | 110V ↔ 220V selectable | Compressors, welders, multi-outlet benches | US$ 25-37 |
| ST/DT-3000 | 3000VA | 110V ↔ 220V selectable | Small production lines, test rigs | US$ 33-43 |
| ST/DT-5000 | 5000VA | 110V ↔ 220V selectable | HVAC, industrial machinery | US$ 52-62 |
| ST/DT-7500 | 7500VA | 110V ↔ 220V selectable | Heavy workshop loads | US$ 75-87 |
| ST/DT-10000 | 10000VA | 110V ↔ 220V selectable | CNC equipment, whole-panel supply | US$ 85-112 |
* Indicative FOB Ningbo/Shanghai, standard configuration, based on 50 pcs per size. Not a formal offer — final price depends on your voltage combination, socket standard, enclosure and order quantity.
- The efficiency of the DT/ST series is 80%. For equipment with motors or compressors, the starting current will multiply — always reserve adequate power margin.
- Pure resistive / electronic loads: choose a transformer with capacity ≥ 1.5× the equipment rated power.
- Inductive loads such as motors and compressors: choose a transformer with capacity ≥ 2.5–3× the equipment rated power.
- This table is for reference only. Confirm the final solution according to the rated power and duty cycle shown on your equipment nameplate.
MOQ, Lead Time & Ordering Information
| Minimum Order Quantity (MOQ) | 1 PC for standard DT models. Smaller trial orders can be discussed for first-time buyers. |
|---|---|
| Custom / OEM orders | 50 PCS for custom voltage, custom socket layout, branded front panel or non-standard capacity. |
| Sample | 1-2 pcs sample available for verified buyers. Sample lead time 3-5 working days. |
| Lead time | 10-20 working days for standard models after order confirmation and deposit; 15-25 working days for OEM or custom configurations. |
| Packing | Export carton with foam. 1/2/6 pcs per carton – see the packing table above. |
| Payment terms | 100% TT IN ADVANCE FOR RETAIL/SAMPLE; 30% TT IN ADVANCE AS DEPOSIT, THE BALANCE BEFORE SHIPMENT. |
| Shipping | FOB Ningbo. CIF and door-to-door available on request. |
| Warranty | 12 MONTHS FROM DELIVERY DATE |
Certifications & Quality Assurance
DT/ST series step up and step down transformers are produced under our ISO 9001 quality management system, and every unit is 100% function-tested before packing.
CE Certified | RoHS Compliant | IEC Tested | ISO 9001 | EMC Tested | 12-Month Warranty
Certificates and routine test reports can be issued as PDF on request, for customs clearance, tender submissions or distributor onboarding.
FAQ
1. What is the power capacity range of the TDGC2J Series?
The TDGC2J Series offers a power capacity range from 0.5KVA to 5KVA, making it suitable for small to medium-sized applications that require precise voltage control.
2. What is the output voltage range of this voltage regulator?
The TDGC2J Series provides an adjustable output voltage range from 0 to 130V, allowing users to manually set the desired voltage level based on their specific requirements.
3. What type of applications is this voltage regulator typically used for?
The TDGC2J Series is commonly used in:
- Laboratory testing
- Voltage calibration
- Industrial equipment
- Home appliances
It is ideal for any application where controlled and stable voltage is essential.
4. How does the manual adjustment feature work?
This series features a manual adjustment knob that allows users to vary the output voltage smoothly by adjusting the transformer taps. This provides precise control over the voltage output.
5. Does this voltage regulator offer any protection features?
Yes, the TDGC2J Series includes important protection features such as:
- Overload protection to prevent damage from excessive current.
- Short circuit protection to safeguard against electrical faults.
- These features ensure safe and reliable operation during use.
Request Quote
Tell us your specifications, quantity, or application scenario and we will reply with a tailored quote.
