— Vartech® DC Power Supplies

3020 30V / 20A Heavy-Duty Linear DC Regulated Power Supply

0–30 V, 0–20 A heavy-duty linear DC supply — preset V & I, CV/CC, Output On/Off, series/parallel capable.

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About This Instrument

The Vartech 3020 is a heavy-duty single-output linear DC power supply rated 0–30 V, 0–20 A. It adds a preset voltage and current facility (not on the 3010), allowing users to pre-set output values before enabling the output. CV/CC automatic switching, Output On/Off, and series/parallel connection capability make it suitable for high-current bench and industrial applications.

Key Features

0–30 V, 0–20 A — single output, fully variable
Linear (transformer-based) — heavy duty
Preset V & I control facility
Automatic CV / CC mode switching
Output On/Off switch
Series / parallel connection capability
Constant current and overload protection

Technical Specifications

Output Voltage	0–30 V (fully variable)
Output Current	0–20 A (fully variable)
Type	Linear (transformer-based), Single output, Heavy duty
CV Line Regulation	≤ 0.01 % + 10 mV
CV Load Regulation	≤ 0.02 % + 10 mV
CC Line Regulation	≤ 0.2 % + 3 mA
CC Load Regulation	≤ 0.2 % + 3 mA (I ≤ 3 A) \| ≤ 0.2 % + 5 mA (I > 3 A) \| ≤ 0.2 % + 15 mA (I > 10 A)
Ripple & Noise (CV)	≤ 3 mV rms
Ripple & Noise (CC)	≤ 3 mA rms (I ≤ 3 A) \| ≤ 10 mA rms (I > 3 A)
Preset V & I	Yes
Display	2 × LED — 3 digits each (V and A)
Indication Accuracy	Voltage: ±1 % + 2 digits \| Current: ±2 % + 2 digits
Protection	Constant current and overload protection
Power Supply	230 V ±10 %, 50 Hz ±2 Hz
Operating Environment	0–40 °C \| RH < 80 %
Dimensions & Weight	255 × 155 × 330 mm \| 14 kg
Accessories	Power cord & instruction manual