Technical data

41
©
FuG Elektronik GmbH, D-83135 Schechen, Am Eschengrund 11
http://www.fug-elektronik.de, E-Mail: [e-mail]
V 0913
Bipolar high voltage power supplies
Series HCB from ±1250 V to ±20000 V / 1,4 W to 200 W
Features:
 Light-weight
 In units with 6,5kV and higher
the HV-components are
moulded in (removable) sili-
con resin
 Short-circuit and flash over
proof.
 Unlimited operation with rated
current in a short-circuit con-
dition
 Voltage regulation and current
limitation with automatic,
sharp transition, control
modes indicated by LEDs
 Voltage adjustment with 10-
turn potentiometers with pre-
cision scale; the adjusting
knob can be locked
 4½ digit DVM for voltage and
current (for table-top models)
 Set point adjustment possible
with locked output, release of
output voltage by means of an
"ON" / "OFF" switch
 4- quadrant operation possi-
ble also for active loads and
unlimited power sinking
 Suitable for capacitive and
resistive loads
Function:
Bipolar HV power supplies
consist of 2 switch-mode con-
trolled HV sources which are
connected to the output. In
principle, the rectified line volt-
age in each source drives a
square wave generator of fixed
frequency, whose AC voltage is
transformed, rectified and fil-
tered, producing the positive or
negative output voltage. For
regulation, the square wave
voltage is pulse width modulat-
ed. The operation is contra-
moving, and the output can be
adjusted with continuous zero
crossing.
Design:
 19" table-top case (19" rack
adaptors available)
Output:
 Output isolation:
One output terminal each
leads the high voltage, the
"0V" terminal is connected
firmly to earth. If required, the
"0V" terminal can be made
floating against earth up to
±300V.
 Output terminals:
All output terminals are locat-
ed at the rear plate of the
unit. High voltage connectors
with the appropriate dielectric
strength are delivered with
the power supply
Technical Data:
 Mains connection:
Up to 700W nominal power:
230V ±10% 47Hz to 63Hz
For 1400W nominal power
and more:
400V±10% 47Hz to 63Hz,
three phase
 Ambient temperature:
0°C to +40°C
The following data applies for
voltage regulation, and refers to
the rated value (unless other-
wise stated). (For explanations
please refer to Definitions and
Terms on page 54.)
 Setting range:
from -100% to +100%
 Setting resolution:
±1 x 10
-4
 Residual ripple (0 - 10 MHz):
<3 x 10
-4
pp + 50mVpp,
typ. 2 x 10
-4
pp
 Recovery time for voltage
control:
<1ms for load changes from
10% to 90% or from 90% to
10%
 Setting time at nominal load:
<200ms
 Deviation:
For ±10% mains voltage vari-
ation:
<± 2 x 10
-5
For no load / full load:
<2 x 10
-4
over 8 hours under constant
conditions:
<±2 x 10
-4
within the temperature range:
<±2 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 46)
 Lower ripple (see page 48)
 Higher stability (see page 48)
 Lower stored energy and
shorter recovery time (see
page 48)
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.
Design example
HCB 7 - 6500
± 6500V / ± 1mA