Technical data

10
©
FuG Elektronik GmbH, D-83135 Schechen, Am Eschengrund 11
http://www.fug-elektronik.de, E-Mail: [e-mail]
V 0913
Function:
The mains voltage is first trans-
formed to the appropriate level.
On the secondary side of the
transformer is a thyristor con-
trolled rectifier stage (phase
cutting circuit). The rectified
voltage is smoothed by a LC -
filter.
Design:
 Depending on voltage and
power the units are built as
single or double 19" cabinets
of various height. The side
covers are detachable, the
rear door is lockable.
 All cabinets are equipped with
fork-lift-compatible plinths and
removable crane-eyes.
 Single 19"- cabinets up to
38U are easily transportable
by fork-lift.
 Cooling is carried out via con-
vection or built-in fans, with
the air being exhausted
(depending upon type) either
via the rear or the top.
Output:
 Output isolation:
The output is floating. The
maximum operating voltage
with respect to earth: ±500V.
Either the positive or the
negative terminal may be
connected to earth.
 Output terminals:
All output terminals are locat-
ed at the rear side of the
cabinet. For Output current
up to 300A feed though termi-
nals are used; for higher
currents the output is via
copper bars.
Technical Data:
 Mains connection:
400V ±10% 47Hz to 53Hz;
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. 1% to 100%
 Setting resolution:
±1 x 10
-4
 Residual ripple (0 - 10MHz):
<1 x 10
-2
pp + 100mVpp
 Recovery time:
<100ms to 500ms (depending
on type) for load variations of
±10%
 Setting time at nominal load:
<100ms to 2sec (depending
on type) for changes of the
output voltage from 10% to
90% or 90% to 10%
 Discharge time constant
for output without load:
approx. 5sec. to 60sec., de-
pending on type
 Deviation:
For ±10% mains voltage vari-
ation:
<±1 x 10
-4
For no load / full load:
<±1 x 10
-3
Over 8 hours under constant
conditions:
<±3 x 10
-4
Within the temperature range:
<±3 x 10
-4
/K
Possible Options:
 Analog programming (One of
the outputs on “0V” - poten-
tial; see also 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)
 Internal resistance setting and
regulation (see page 48)
 Power regulation with display
(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.
Low voltage power supplies thyristor regulated
Series NYN from 12,5 V to 350 V / 7 kW to 100 kW
Design Example
NYN 70000 - 35
35V / 2000A
NYN 42000M - 84
84V / 500A
customer specific design with
current consumption unit
(Side covers removed)
Features:
 Simple construction
 Extremely robust
 High efficiency
 Short circuit proof and unlim-
ited operation with full current
in short circuit condition
 Voltage and current regulation
with automatic and sharp
transition; control modes indi-
cated by LEDs
 Voltage and current setting
with 10-turn potentiometers
with precision scale; the ad-
justing knob can be locked
 Sense terminals for the com-
pensation of voltage drop on
the load lines. The nominal
voltage always refers to the
output terminals
 Limitation of inrush current on
switching on
 Suitable also for inductive and
capacitive loads
 Interlock loop to monitor the
external load and internal loop
as a standard
 Elapsed-hour meter as a
standard