Technical data

30
©
FuG Elektronik GmbH, D-83135 Schechen, Am Eschengrund 11
http://www.fug-elektronik.de, E-Mail: info@fug-elektronik.de
V 0913
Capacitor charging power supplies
Series HCK from 2 kV to 65 kV / 100 J/s to 20 kJ/s
Features:
Efficiency approx. 90%
In units of 20kV and higher,
the HV-components are
moulded in (removable) sili-
con resin. From 35kV / 5000J/
s on, the HV-components are
isolated in oil
Continuous charging or trig-
gered charging via potential
free external trigger input
selectable (opto-coupler input
for 12 - 24V).
Charging with adjustable
constant current without over-
shoot.
Voltage and current setting by
10-turn potentiometers with
precision scale; the adjusting
knob can be locked
Suitable for continuous or
compensation charging
No external protection resistor
is required
Permanent short-circuit proof
digit DVM for charging
current and output voltage (for
table-top models)
Pre-selection of the output
voltage with display
End of charge signal, when
the final voltage is reached,
via front panel LED and a
potential-free interface for
signalling to an external con-
trol system (opto-coupler
output)
Suitable for capacitive loads
with resistive elements
The nominal current can be
permanently supplied at maxi-
mum output voltage
Function:
The capacitor charging high
voltage DC power supplies are
designed specifically to the
requirements of capacitor charg-
ing or capacitor conditioning, i.e.
they have a more heavily de-
signed output resistor to with-
stand a pulsed load and a regu-
lating circuit, optimized for fast
switching over between current
and voltage regulation and vice
versa.
In principle, the rectified line
voltage drives a square wave
generator of fixed frequency,
whose AC voltage is trans-
formed, rectified and filtered,
producing the output voltage.
For regulation, the square wave
voltage is pulse width modulat-
ed.
Design:
Up to 2500J/s nominal power
19" table-top case, higher power
in 19" cabinets (depending on
type) with oil isolated external
HV-container.
Output:
Output isolation:
The polarity is positive or
negative and has to be indi-
cated with the order.
The "0V"- terminal of the
output is connected to earth
but may be disconnected as
needed. When disconnected,
the "0V" (earthy) terminal
may float with respect to
earth up to ±300V.
Output terminals:
For all HCK units the output
is on the rear side of the unit
or on a separate HV-
container. Mating HV-
connectors are included, from
35kV on, assembled with 3m
cable, from 65kV >5000J/s on
with 10m cable.
Technical Data:
Mains connection:
Up to 800J/s nominal power:
230V ±10% 47Hz to 63Hz;
From nominal power 1600J/s
400V ±10% 47Hz to 63Hz,
three-phase
Ambient temperature:
0°C to +40°C
Charging power:
The specified max. charging
power (see table) will be
supplied for charging be-
tween "0" and the rated volt-
age. For charging of a partial-
ly discharged capacitor a
considerably higher charging
power, up to the double, can
be supplied.
Setting range for the charging
voltage:
from approx. 1% to 100%
Setting resolution:
±1 x 10
-4
Reproducibility of the charg-
ing voltage with respect to the
rated value:
For ±10% mains voltage vari-
ation:
<±1 x 10
-4
Over 8 hours under constant
conditions:
<±1 x 10
-3
Within the temperature range:
<±2 x 10
-4
/K
For a repetition frequency of
<10Hz:
<±1 x 10
-3
For a repetition frequency of
>10Hz:
<±1 x 10
-2
Repetition frequency:
max. 100Hz
Residual ripple of the charg-
ing current:
approx. 10%pp 20kHz/40kHz)
Possible Options:
Analog programming (see
page 44)
Analog programming, floating
(see page 44)
Computer interfaces - IEEE
488, RS 232, RS 422, Profi-
bus DP, LAN, USB (more on
request) (see page 46)
Polarity reversal switch avail-
able up to 1600J/s (by re-
quest for higher powers)
Please specify the output
polarity, when ordering with-
out polarity reversal switch.
(see page 48)
Dump switch for the output &
the load
Higher repetition frequency
Built-in or external discharge
circuit for pulse operation
Higher stability and better
reproducibility (see page 48)
Roller blades for cabinet units
More options and special solu-
tions on request. Some options
may involve changes to the
description of the unit - espe-
cially concerning the mechani-
cal design.
HCK 200 - 12500
12500V / 30mA
Design example