| Current | 20A |
|---|---|
| Voltage | 220V |
| Wattage | 4000 ～ 6000W |
eTM-22020C 220V 20A Variable Bench DC Power Supply
Original price was: $ 1,749.00.$ 1,249.00Current price is: $ 1,249.00.
Adjustable 0–220V output and 0–20A current control for laboratory and high-voltage circuit testing, with low ripple and noise, CV/CC operation and optional programmable interfaces.
- Low noise and low ripple
- Preset voltage and current before enabling the output
- Four-digit LED display with automatic decimal-point positioning
- Two-knob encoder adjustment and independent output on/off button
- Automatic constant-voltage / constant-current operation
- Overvoltage, overcurrent, overpower, overtemperature and short-circuit protection
- Dual-frequency switching technology and temperature-controlled cooling fan
- Optional rear SENSE compensation and external trigger
- Optional RS232, RS485 or USB interface for programmable control
- Power cord, certificate and output terminal included; output leads selected separately
- 220–240V AC input; listed 110–130V option limited to 1200W output
Choose your AC input, output leads and control options, then order online.
Additional information
Product Paramenters
Product Paramenters
| Model | eTM-22020C |
| Input Voltage | AC 220V + 10% (Optional below 1200W: Fixed AC110V input) |
| Input Frequency | 50Hz/60Hz |
| Output Voltage | Constant voltage value range: 0-220V, continuously adjustable |
| Output Current | Constant current value range: 0-20A, continuously adjustable |
| Way of Working | Automatic switching between constant voltage and constant current mode |
| Display Resolution | Four-digits display: voltage 100mV, current 10mA |
| Setting Accuracy | Voltage: 0.1V Current: 0.1A |
| Ripple & Noise | ≤1% (valid values) |
| Protective Function | Overvoltage Protection, Overcurrent Protection, Overpower Protection, Overtemperature Protection, and Short Circuit Protection |
| Working Environment | Temperature: 5-40 celsius Relative Humidity: <80% |
| Storage Environment | Temperature: 5-30 celsius Relative Humidity: <60% |
| Height above Sea Level | ≤2000m |
| Dimension | 410*250*155mm (Length*Width*Height)mm |
| Weight | 10KG |
| Category | 20A DC Power Supply, HV DC Power Supply |
Product Description
Product Description
220V variable DC power for laboratory and equipment testing
The eTM-22020C provides continuously adjustable 0–220V voltage and a 0–20A current setting in a two-knob bench format. Low noise and low ripple, voltage/current presets and a separate output switch support everyday laboratory setup, with optional interfaces for computer-connected testing.
Set the output before powering the load
Preset voltage and current, then use the dedicated on/off button to enable the output. The four-digit LED display shows the operating values. Automatic CV/CC transition supports voltage-controlled operation and current limiting as the load changes.
- Low noise and low ripple
- Separate voltage and current adjustment with encoder controls
- Overvoltage, overcurrent, overpower, overtemperature and short-circuit protection
- Temperature-controlled cooling fan
- Optional SENSE compensation, external trigger and computer interfaces
eTM-22020C specifications
| Output voltage | 0–220V, continuously adjustable |
|---|---|
| Current setting | 0–20A, continuously adjustable |
| Operating modes | Constant voltage / constant current, automatic transition |
| Display | Four-digit LED with automatic decimal-point positioning |
| Display resolution: voltage / current | 100mV / 10mA |
| Cooling | Temperature-controlled fan |
| Enclosure dimensions | 410 × 250 × 155mm |
| Weight | 10kg |
Connections and control options
Use the front-panel controls for local operation, or select an optional RS232, RS485 or USB interface for a computer-connected setup. Optional SENSE compensation measures voltage at the load connection; an external trigger option is also available.
| Requirement | Configuration |
|---|---|
| Manual bench operation | Encoder voltage/current controls, presets and output on/off button |
| Computer control | Optional RS232, RS485 or USB; choose the interface in the serial-port selector |
| Load-side voltage sensing | Optional SENSE compensation |
| External control | Optional external trigger; RS232 with analogue control module is also listed in the selector |
| Output wiring | Select output leads for the operating current; leads are a separate option |
Applications for the eTM-22020C
DC converter input testing
Apply different DC input voltages to a converter under development and compare its operation across the intended input range. Set the current limit for the test and account for input-capacitor charging demand when choosing the supply.
High-voltage circuit checks
Use adjustable DC power for development and functional checks of circuits operating within the 220V range. Front-panel voltage and current settings allow test points to be changed without replacing a fixed-voltage supply.
Production test fixtures
Configure RS232, RS485 or USB communication for connection to a test computer, or select an external trigger option where the fixture needs external control. SENSE compensation is available for installations where output-lead voltage drop matters.
Choose your configuration
For manual bench work, use the front-panel controls. For a computer-connected setup, select the required communication interface. Choose output leads for the current and installation, and add SENSE compensation where voltage drop at the fixture is a concern.
Select the available options above and order online. For a configuration that is not listed, use the product’s Get Quote or WhatsApp option.
Low ripple, protection and cooling
Low-noise, low-ripple output supports DC bench work where supply disturbances matter. The switching design uses dual-frequency technology, with a temperature-controlled fan for cooling. Overvoltage, overcurrent, overpower, overtemperature and short-circuit protection are built in.
For sustained-load testing, provide clear ventilation and use output wiring suited to the load current. Keep the setup within the electrical and environmental operating limits.
Bench space and supplied accessories
The enclosure measures 410 × 250 × 155mm and weighs 10kg. Allow room behind the supply for cooling and cable connections. A power cord, certificate and output terminal are included; choose output leads and optional control interfaces with your order.
eTM-22020C FAQs
How do I select a 220V 20A supply for my test?
Start with the voltage and current at each operating point, including startup demand. The eTM-22020C offers adjustable 0–220V output and a current setting up to 20A. Choose the AC input, output wiring and control options for the test setup.
Are RS485 and USB included as standard?
Communication interfaces are optional. Choose RS232, RS485 or USB in the serial-port selector; the default selection is without these interfaces. Match the selected interface and command support to your test software.
When is the SENSE option useful?
SENSE compensation is useful when resistance in the output leads causes a voltage drop at the load. Select the SENSE option for load-side voltage sensing, and keep the power leads suitable for the operating current.
Does this model have low ripple and noise?
eTM-22020C includes low-noise, low-ripple output as a product feature. For a test with a specific ripple limit, compare the required measurement conditions with the product specification before selecting the configuration.
What should I select before ordering online?
Choose the AC input, output-lead option, SENSE or external trigger option, and communication interface above, then set the quantity and add the product to your cart. Output leads and communication interfaces are optional selections.
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