Technical data

48
©
FuG Elektronik GmbH, D-83135 Schechen, Am Eschengrund 11
http://www.fug-elektronik.de, E-Mail: [e-mail]
V 0913
Polarity reversal:
By this switch the output voltage
polarity of a high voltage power
supply (Nearly all of the HCP,
HCK or HYN types) can be
changed.
With HCP up to 35kV it is possi-
ble to remote control the polarity
change if the units are equipped
additionally with an analog pro-
gramming or with digital inter-
face. For the most models the
polarity reversal can be installed
later at our site. On request
please ask us!
Higher stability:
Voltage and/or current regula-
tion with better long-term stabil-
ity and lower temperature coeffi-
cient. With a lot of models, us-
ing components with a better
specification and lower temper-
ature coefficient the following
data can be reached:
 Stability over 8 hours under
constant conditions:
<±1 x 10
-5
 Temperature coefficient:
<±1 x 10
-5
/K within the speci-
fied temperature range
On request we can achieve for
certain units even a higher sta-
bility.
These options can be incorpo-
rated only in new units. A later
modification is not possible.
These options are not available
for cassette power supplies.
Lower output ripple:
On several series a lower ripple
can be achieved by better
smoothing. This option can be
supplied only with new units. A
later modification is not possi-
ble. The following data will be
achieved:
 For MCP / HCP up to 35W:
<1 x 10
-5
+ 10mV p-p
 For MCP / HCP 140W to
700W:
<1 x 10
-5
+ 20mV p-p
 For MCP / HCP of 1400W
and higher power:
<1 x 10
-5
+ 100mV p-p
This option is not available for
cassette power supplies and for
power supplies of the NTN
series.
Options and modifications:
Further possibilities
Lower stored energy:
Especially for the operation of
gas discharge processes, arcs
or similar loads with a negative
dynamic resistance characteris-
tic, the quantity of stored energy
can be decreased by smaller
output capacitors. Those units
will have than a higher ripple up
to 1%. This option is available
for units of the series MCP, HCP
or HCH.
Digital meters with higher
resolution:
For units, which are equipped
with 3½ digit DVM in the stand-
ard version (Units in cabinet
case: display of max."1999"),
instead of the standard DVM, a
DVM with higher resolution (4½
digit) can be offered. This re-
placement is also possible later
at our site.
For customer specific units even
higher display resolutions are
possible (Only for new units in
combination with a higher stabil-
ity).
Standard table top units are
equipped with 4½ digit meters.
Higher adjustment resolution:
By an additional ten-turn potenti-
ometer for fine adjustment of
current and/or voltage the reso-
lution will be increased by a
factor of 100. Adjustment range
0 - 99% and a window of ap-
prox. 1%.
Power regulation with display
and adjustment:
Besides the standard voltage
regulation and current regula-
tion, the units may be equipped
with an additional regulation
loop for constant power.
Internal impedance:
For electronic simulation of a
changing internal impedance of
the unit (e.g. battery characteris-
tic). The technical design is
similar to the power regulation.
Preset indication:
The preset values can be dis-
played by a button besides the
appropriate meter. (For table-
top units standard.)
Electronical sweep of nomi-
nal value:
Ramp function especially for
superconductor power supplies.
Flashover sensor:
Supervising on over-current/
high voltage flashover with
signalization, shut down or
spark counter.
Interlock loop for supervis-
ing of the connected load
(e.g. door contacts):
At interrupting the interlock
loop, the unit will be shut down
by disconnecting the mains.
Only after pressing the
"RESET"- button, the unit can
be put into operation again.
Fast discharge of the output:
When the unit is shut down,
e.g. together with the interlock
loop, additionally the output
capacitor will be discharged
within a distinct time. To offer
this, we need additional infor-
mation on the desired dis-
charge time, frequency of such
discharges and any existing
external capacitance which
needs to be discharged.
On request please ask us!
Active down regulation:
For fast controlled decrease of
the output voltage.
Different mains voltage and
frequency:
As a standard, our units are
designed for a 230V, 50Hz or
400V, 50Hz three phase mains
input. But most of our units can
be modified for other mains
values, like they are used in
other countries.
Higher isolation of the output
and/or the mains input:
For special applications (e.g.
the operation at a high voltage
platform), the standard isolation
of the unit may be not sufficient.
We can deliver units with isola-
tions up to > 200kV.
Customer specific design of
the power output:
For several types of our units
the output, as a standard, is at
the front or at the rear plate.
Optionally on request it can be
moved to any other place.
Temperature regulated fan:
Switch on of the fans of a
cooled by forced air unit only at
higher power request. This
option can be delivered for
some models only if there are
no strong requests for the sta-
bility of the current regulation.
Please take into account that
many of the options and mod-
ifications mentioned here
require a further technical
specification. Furthermore,
we will gladly offer you more
special equipments and mod-
ifications on request.