Technical data

22
©
FuG Elektronik GmbH, D-83135 Schechen, Am Eschengrund 11
http://www.fug-elektronik.de, E-Mail: [e-mail]
V 0913
High voltage power supplies, high power
Series HCH from 650 V to 300 kV / to 50 kW
Features:
 Efficiency up to 90%
 Short-circuit & flashover proof
 In units up to 20kV nominal
voltage, the HV-components
are isolated in air. From 35kV
on the isolation is with oil.
 Unlimited operation with rated
current in a short-circuit con-
dition
 Unlimited operation with rated
power
 Voltage and current regulation
with automatic sharp transi-
tion, control modes indicated
by LEDs
 Limitation of inrush current on
switching on
 Voltage and current setting by
means of 10-turn potentiome-
ters with precision scale; the
adjusting knob can be locked
 Interlock loop to monitor the
external load and internal loop
as a standard
 Output terminals:
All output terminals are locat-
ed at the rear side of the
cabinet or at the top of the HV
container. High voltage con-
nectors with the appropriate
dielectric strength are deliv-
ered with the power supply
for units with output current
up to 10A. For units with
higher output currents, the
output will be carried out
according to your wishes so
that your load can be opti-
mally connected.
For nominal voltage of 65kV
and higher the HV- plug will be
delivered ready mounted to
10m cable.
Technical Data:
 Mains connection:
Up to 1400W nominal power:
230V ±10% 47Hz to 63Hz
For 2800W and higher:
400V ±10% 47Hz to 63Hz,
three-phase
 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 - 10 MHz):
<2 x 10
-3
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:
<500ms for changes of the
output voltage from 10% to
90% or 90% to 10%
 Discharge time constant
for output without load:
approx. 1sec. to 10sec., de-
pending on type
 Deviation:
For ±10% mains voltage vari-
ation:
<± 1 x 10
-4
For no load / full load:
<5 x 10
-4
Over 8 hours under constant
conditions:
<±2 x 10
-4
Within the temperature range:
<±1,5 x 10
-4
/K
Possible Options:
 Analog programming (see
page 44)
 Analog programming, floating
(see page 44)
 Computer interfaces - IEEE
488, RS 232, RS 422, Profi-
bus DP, USB, LAN (more on
request) (see page 44)
 Polarity reversal switch.
Please specify the output
polarity, when ordering with-
out polarity reversal switch.
(see page 48)
 Lower ripple (see page 48)
 Higher stability (see page 48)
 Shorter setting time (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.
HCH 50000 - 20000
20kV / 2,5A
Design example
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:
 Depending on Voltage and
Power the units are built as
single or double 19" cabinets,
or as a oil- filled HV container
with the power electronics on
the top or in a separate rack.
Output:
 Output isolation:
The required output polarity
must be stated with the order.
The requested output polarity
will then be available at the
HV connector and the “0V”
terminal will be firmly connect-
ed to earth. If required, the
"0V" terminal can be made
floating against earth up to ±
50V. A polarity reversal switch
is optionally available.