Siemens SINAMICS G150 Operating Instructions Manual page 120

Electrical installation
4.11 Other connections
Restrictions
Note
The relative short-circuit power (RSC) of the supply system must be at least equal to the
value of RSC = 10.
Note
On systems with a grounded phase conductor and a line voltage >600 V AC, line-side
components should be installed to limit overvoltages to overvoltage category II in
accordance with IEC 61800-5-1.
CAUTION
Please observe the switching frequency!
If the switching frequency (once every 3 minutes) defined in the technical specifications is
not adhered to, severe damage to the connected Power Module may result.
CAUTION
Observe the waiting time when restarting!
After the converter has been switched off, a wait time of at least 30 seconds must be
maintained before switching on again. This wait time is implemented using an internal timer
relay, which prevents the unit from being switched on again.
If a restart command is given before the waiting period has expired, fault F30027 "Power
unit: Time monitoring for DC link pre-charging" is issued.
NOTICE
Operation with high voltages
The Line Harmonics Filter increases the input voltage of the Power Module slightly
compared to the connection voltage.
For a connection voltage in the uppermost tolerance range (480 V +8 %, 600 V +10 % or
690 V +8 %), the internal monitoring of the DC link voltage can initiate fault F06310.
Use parameters p2118 and p2119 to reparameterize this fault as a alarm.
NOTICE
Operation with braking unit (option L61 / L62)
If a braking unit is used, and the connection voltage lies in the uppermost tolerance range
(480 V +8 %, 600 V +10 % or 690 V +8 %), the threshold value switch must only be set to
the high response threshold in each case.
The chopper could otherwise trip inadvertently during normal operation.
118
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A