SIEMENS
7/229
Siemens D 21.4 · 2017
SINAMICS S120 drive system
Chassis format
Motor-side power components for chassis format
> dv/dt filters compact plus VPL
7
■
Overview
dv/dt filters compact plus VPL (
V
oltage
P
eak
L
imiter) limit the
voltage rate-of-rise
dv/dt
to values of < 1600 V/
μ
s and the typical
voltage peaks to the following values in accordance with the limit
value curve A according to IEC 60034-25: 2007:
< 1150 V at
U
line
< 575 V
< 1400 V at 660 V <
U
line
< 690 V
Standard motors with standard insulation and without insulated
bearings with a supply voltage of up to 690 V can be used for
converter operation if a dv/dt filter compact plus VPL is used.
dv/dt filters compact plus VPL are designed for the following
maximum motor cable lengths:
•
Shielded cables: 100 m (328 ft) (e.g. Protodur NYCWY)
•
Unshielded cables: 150 m (492 ft) (e.g. Protodur NYY)
For longer cable lengths (> 100 m (328 ft) shielded, > 150 m
(492 ft) unshielded)
refer to dv/dt filter plus VPL
.
Notice:
•
The max. permissible cable length between the dv/dt filter and
Motor Module is 5 m (16.4 ft)
•
Operation with output frequencies < 10 Hz is permissible for
max. 5 min.
■
Design
The dv/dt filter compact plus VPL consists of two components,
which are supplied together as a compact mechanical unit:
•
dv/dt reactor
•
Voltage limiting network, which cuts off the voltage peaks and
feeds the energy back to the DC link
© Siemens AG 2017