Delta Elektronika ES 030-10, Manual

Page: 4 / 13

GENERAL ES300
4 / 13 DELTA ELEKTRONIKA B.V. rev. Sept. 2019
2 GENERAL
2.1 OUTPUT

The ES030-10 can either be used as a constant voltage
source with current limiting or as a constant current source
with voltage limiting.

The change of mode occurs sharply at the crossing of the
voltage and current settings. Fig. 2 - 1 shows the output
ranges.
2.2 OVERLOAD PROTECTION

The power supply is fully protected against all overload
conditions, including short circuit.
2.3 INPUT VOLTAGE

The power supplies have a wide input voltage range.
2.4 INPUT CURRENT

The units have active power factor correction (PFC). The
input current will therefore almost be a sine wave. This
means that the rms-value and the harmonic distortion of the
input current will be relatively low.
2.5 EFFICIENCY

The efficiency is very high and constant over a wide output
current range. High efficiency also means low power loss and
low heat generation.
2.6 CV REGULATION

The CV-load regulation should be measured directly on the
output terminals (see fig. 2 - 2). A few cm of cable can have a
voltage drop of several mV (at high current!).
2.7 CC REGULATION

For accurate CC-load regulation, the optional external voltage
sensing is not recommended.
2.8 RIPPLE & NOISE

The output ripple is very low with almost no spikes. The ripple
voltage has to be measured directly on the output terminals
using a probe with very short connections (to avoid pick up of
magnetic fields) (see fig. 2 - 3).

Note: to get reliable results, the background noise level
should be lower than the output ripple.
2.9 PROGRAMMING INPUTS

The output voltage and current can be programmed by an
external analog voltage. This programming is very accurate
and linear. The levels are all standardised on 5V.

The inputs have a protection circuit formed by a series
resistor and a parallel zener (see fig. 2 - 4). The capacitor
limits the speed to a safe value. Note that the analog inputs
(and outputs) are not floating, but the common is connected
to the negative output terminal. Wrong connection of Ø can
cause earth loops which can trip the fuse. After removing the
fault, the fuse will reset (PTC-fuse). To prevent earth loops,
use isolated programming with the ISO AMP MODULE.

The programming mode (program and manual) can be
selected at the rear panel.
2.10 Ethernet / IEEE488 / RS232 PROGRAMMING

The Delta Elektronika PSC-ETH and PSC-232 controllers can
be built inside the unit. The programming connector on the
power supply is compatible with the external interface PSC-
488 module.

Voltage and current can easily be programmed and read
back. Also all the status outputs can be read by the
computer.
Warning! 0Vprog. and Minus DC power
are internally connected.
0Vprog.
– DC power