3000 B - 3 series DC power supplies are very stable regulated DC power supplies having complete Output protection, continuously variable output voltage and current levels with automatic constant voltage and current. Series or Parallel or independednt operation modes can be selected through the front panel switch. These have 4 LED, displays (3 digits) which display Voltage and Current of both channels continuously. These have an additional fixed output of 5V, 2A. 

Technical Parameters:

• Input voltage : 220 V ± 10%, 50Hz ± 2Hz
• Output Voltage : 30 V
• Output Current : 5A
• Line regulation : CV ≤ 0.01% + 3mV,  CC ≤ 0.2% + 3mA
• Load regulation : CV ≤ 0.01% + 3mV,  CC ≤ 0.2% + 3mA
• Ripple and noise : CV ≤ 1 mV rms,  CC ≤ 3 mA rms
• Protection : Constant current and Short-circuit protection
• Indication accuracy : ≤ 0.5% + 1 digit.
• Operating Environment : 0 ~ + 40 ºC, Relative humidity  : < 90%
• Dimensions : 240 X 150 X 270 mm
• Weight : Appx. 9.5 kg
• Accessories : Power cord & Instruction manual