Technical data

27
©
FuG Elektronik GmbH, D-83135 Schechen, Am Eschengrund 11
http://www.fug-elektronik.de, E-Mail: [e-mail]
V 0913
High voltage cassette power supplies EURO-size
Series HCE from 125 V to 35 kV / 7 W to 350 W
Features:
 Compact size
 Light-weight
 For units from 6.5kV nominal
voltage on, all HV compo-
nents are moulded in (re-
movable) silicon
 Short circuit and flashover
proof
 Unlimited operation with rated
current in a short-circuit con-
dition
 Unlimited operation with rated
power
 Voltage or current regulation
with automatic transition.
 Control mode indicated by
LEDs
 Screwdriver adjustment of
voltage and current on the
front panel
 Standard analog program-
ming plus HV ON/OFF input
and monitor outputs
 Measuring terminals for volt-
age and current monitors on
the front panel
 Suitable for use with capaci-
tive loads
 Suitable for use with photo-
multipliers
Option:
 Ten turn potentiometer for
voltage on the front panel.
Function:
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:
 EURO-cassette design.
Width depending on type.
 19" frames are available as
an option.
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 ±125V.
 Output terminals:
Outputs are located on the
rear of the units. For units up
to 650V nominal voltage, the
output is on 4mm safety con-
nectors.
From 1250V nominal voltage
on, HV-connectors are pro-
vided. The mating HV-
connectors are delivered with
the unit.
Technical Data:
 Mains connection:
230V ±10% 47Hz to 63Hz
 Ambient temperature:
0°C to +40°C
The following data applies for
voltage and current regulation,
and refers to the rated value
(unless otherwise stated):
(For explanations please refer to
Definitions and Terms on page
54.)
 Setting range:
from approx. 0,1% to 100%
 Setting resolution:
±1 x 10
-4
 Residual ripple (0-10MHZ):
In CV mode:
<1 x 10
-4
pp + 50mVpp,
typ. 5 x 10
-5
pp
In CC mode:
<5 x 10
-4
pp + 50mVpp
 Recovery time:
Voltage control:
<1ms for load changes from
10% to 100% or from 100% to
10%
Current control:
<10ms for load changes caus-
ing an output change of less
than 10% of the rated voltage
 Setting time at nominal load:
<200ms for changes of the
output voltage from 10% to
90% or 90% to 10%
 Discharge time constant
for output without load:
approx. 0,5sec. to 5sec.,
depending on type
 Deviation:
For ±10% mains voltage vari-
ation:
<± 1 x 10
-5
For no load / full load:
<2 x 10
-4
Over 8 hours under constant
conditions:
<±1 x 10
-4
Within the temperature range:
<±1,5 x 10
-4
/K
Voltage and current adjustment
by screwdriver or via analog
programming.
HCE 7 - 12500
12,5kV / 0,5mA
positive
Design example HCE 35 - 35000
35kV / 1mA
negative
HCE 7 - 3500
3,5kV / 2mA
positive (2 units)
HCE 350 - 2000
2kV / 150mA
positive