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EX2020R

Bench Power Supply

INSTRUCTION MANUAL

  
      1 
Introduction 
The EX2020R is an exceptionally compact and lightweight single output laboratory dc power 
supply providing 0 to 20V at 0 to 20A. 
The EX2020R uses mixedmode regulation technology which combines switchmode 
preregulation with linear postregulation. Special techniques are used to maintain very high 
efficiency whilst achieving noise levels that are close to that of a pure linear regulator. 
Excellent line and load regulation are matched by low noise and good transient response. High 
resolution controls allow accurate setting of voltage and current levels.  Remote sense terminals 
are provided so that good regulation can be maintained across remote loads at high currents. 
The output operates in constant voltage or constant current mode with automatic cross-over and 
mode indication. There is a DC output onoff switch. 
The EX series incorporates separate digital voltage and current meters on each output. The 
meters use bright 14mm (0.56”) LED displays and have an update rate of 4 per second providing 
near instantaneous response. Simultaneous metering of voltage and current provides accurate 
information “at a glance” and avoids any possibility of misinterpretation. When the output switch 
is set to “off”, the current limit setting is displayed enabling conditions to be set before the load is 
connected. 
The EX series has been designed to meet the stringent requirements of the latest relevant IEC 
standards for safety and EMC, including harmonics emissions.  All outputs are intrinsically short 
circuit proof, and are protected against external voltages and reverse currents. 
 
Table of Contents 
Introduction  1 
Table of Contents  1 
Specification  2 
Safety  3 
Installation  4 
Connections  4 
Operation  5 
Maintenance  6 
Instructions en Francais  7 
Bedienungsanleitung auf Deutsch  11 
Istruzioni in Italiano  16 
Instrucciones en Español  21 
 
 
 