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About the device
4.7
Relation of input voltage to input current
When working with applications that input only low voltages
to the load, it becomes necessary to know the minimum
input voltage that is required for the load to draw the full
input current. That minimum voltage is not zero and, de-
pending on the number of transistors inside, it varies from
model to model.
EL9080-600
I
zu U
e
700
600
500
400
300
200
100
0
0,1
0,2
0,3
0,4
EL9160-300
I
zu U
e
350
300
250
200
150
100
50
0
0
0,1
0,2
0,3
EL9400-150
I
zu U
e
160
140
120
100
80
60
40
20
0
0.0
0.1
5.
Installation
5.1
Visual check
After receipt, the unit has to be checked for signs of phy-
sical damage. If any damage can be found, the unit may
not be operated. Also contact your dealer immediately.
5.2
Mains connection
The mains connection is done with the included mains
cord. The socket is of 10A IEC 320 type. The mains cord
has a length of about 1.5m and a cross section of 3 x
0.75mm².
The unit is fused with a 5 x 20mm safety fuse (for value
see „2. Technical specifications" or fuse imprint), which is
accessible at the rear side in a fuse holder. In case it has
to be replaced, it has to be by the same type and value.
34
Date: 11-16-2011
/ I
to U
e
in
in
0,5
0,6
0,7
0,8
0,825
U
/V
in
/ I
to U
e
in
in
0,4
0,5
0,6
0,7
0,8
U
/V
in
/ I
to U
e
in
in
0.2
0.3
0.4
0.5
U
/V
in
5.3
Terminal DC input
The load input is located at the rear side of the device.
The connection to any feeding source is done here by
the M8 screws. Always take care for correct polarity! Only
DC voltages allowed!
The input is not fused. In order to prevent damages by the
feeding source always observe the nominal values of the
electronic load! If necessary, install an extra fuse between
load and source, especially when discharging batteries.
The cross section of the load cables depend on the cur-
rent input. We recommend to use:
up to 150A:
2 x 16mm² or at least 1 x 50mm²
up to 300A:
2 x 50mm² or at least 1 x 150mm²
up to 600A: 2 x 150mm²
per cable (flexible wire).
5.4
Grounding the input
The DC+ input can be grounded with the restriction that
when connected to PE, the maximum input voltage is
limited to 300V and must not be exceeded! DC- input is
free to be connected to PE without problems.
Attention! When grounding one of the input poles
always check if one of the output poles of the source
(eg. power supply) is also grounded. This could result
in a short-circuit!
5.5
Connecting „System Bus"
The terminal System Bus (rear side) is another interface
with important features. For pin assignment and detailed
description see section „6.11. Functions of the connector
„System Bus"".
Any connection here must only be done when the device
is switched off!
5.6
Using and connecting the remote sense
The remote sense feature is wired at terminal System
Bus. Also see section 6.11 for further information.
In order to compensate voltage drops over the load cables
(max. 1.1V per line) between feeding source and con-
sumer, the load can measure the voltage at the source
via the remote sense input poles at the terminal System
Bus and regulates accordingly. The connection is done,
with correct polarity, at the rear side of the device at the
terminal System Bus, at pin 1 (+ Sense) and pin 4 (–
Sense). Recommended cross section: 0,2mm
flexible wire with cable end sleeves.
(+) Sense must only be connected to (+) output
and (–) Sense must only be connected to (–) output
of the feeding source. Else both device might get
damaged.
5.7
Interface card slot
The unit can be equipped with an optional interface card.
The slot to insert the card is located at the rear side.
Further information about the interface cards can be
found in section 9.
EN
– 2,5mm
2
2
Instruction Manual
EL 9000 A Series
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