Aim TTi EL-R Serie Manuel D'instructions page 3

The EL-R series provides medium levels of power (up to 125 watts) in a compact and attractive
case style using linear regulation.
High resolution controls allow precise setting of voltage and current levels which are indicated on
accurate and highly legible digital meters.
Excellent line and load regulation is matched by very low noise and good transient response.
Improved power efficiency ensures that the units require no fan cooling. Remote sense terminals
are provided so that good regulation can be maintained across remote loads at high current.
The EL302RD has two independent isolated outputs each with a 0 to 30V, 0 to 2A capability. The
outputs operate in constant voltage or constant current mode with automatic crossover and mode
indication. Each output has its own on-off switch. The outputs can be wired in either series or
parallel to provide voltages up to 60 volts or currents up to 4 amps. The EL302RT has, in
addition, an Auxiliary 'logic voltage' output with a 2A current capability. This output can be preset
between 1.5 volts and 5 volts via a front panel control.
The EL155R, EL183R, EL301R, EL302R, EL303R and EL561R are single output supplies
capable of supplying up to 15V/5A, 18V/3.3A, 30V/1A, 30V/2A, 30V/3A or 56V/1.1A respectively.
The EL-R 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 an output switch is
set to "off", the current limit setting is displayed enabling conditions to be set before the load is
connected. With the right-hand main output off the right-hand meters can be used to
momentarily display the preset Auxiliary voltage and current limit.
The EL-R series has been designed to meet the stringent requirements of relevant IEC
standards for safety and EMC. All outputs are intrinsically short circuit proof, and are protected
against external voltages and reverse currents.
MAIN OUTPUTS
Voltage Range:
Current Range:
Voltage Setting:
Current Setting:
Operating Mode:
Output Switch:
Output Terminals:
Sensing:
Output Protection:
2
0V to 15V minimum (EL155R)
0V to 18V minimum (EL183R)
0V to 30V minimum (EL301R, EL302R, EL303R, EL302RD, EL302RT)
0 to 56V minimum (EL561R)
0A to 1A minimum (EL301R)
0A to 1.1A minimum (EL561R)
0A to 2A minimum (EL302R, EL302RD, EL302RT)
0A to 3A minimum (EL303R)
0A to 3.3A minimum (EL183R)
0A to 5A minimum (EL155R)
By coarse and fine controls.
By single logarithmic control.
Constant voltage or constant current with automatic cross-over.
Electronic. Preset voltage and current displayed when off.
Universal 4mm safety binding posts on 19mm (0.75") pitch.
Switchable between local and remote. Spring-loaded push terminals for
remote connection.
Outputs will withstand forward voltages of up to 20V above the rated
output voltage. Reverse protection by diode clamp for currents up to 3A.
Introduction
Specification