Siemens SIMODRIVE 611 Planning Manual page 52

2 System Configuration
2.8 Line supply connection
2
Recommendation
2-52
The following should be observed
S
It is only permissible to use a delayed (selective) universal current–sensitive
residual–current protective device (connected–up corresponding to the
diagram
S
It is not possible to connect residual–current protective devices in series for
selective tripping
S
The max. permissible ground resistance of the "selective protective device"
is maintained (83 Ω max. for residual–current protective device with a rated
differential current of 0.3 A)
S
The total length of the shielded power cables used in the drive group (motor
feeder cable including line supply feeder cables from the line filters up to the
NE connecting terminals) must be less than 350 m.
S
Operation is only permissible with line filters when using the line filters des-
cribed in Section 7
Notice
The AC current or pulsed–current–sensitive residual–current protective
devices, which today are well–established, are not suitable!
SIEMENS universal current–sensitive residual–current protective devices
(selective) corresponding to DIN VDE 0100 T480 and EN 50178, series
5SZV–VVV–VVVVV.
(e.g. 5SZ6 468–0KG00 or 5SZ6468–0KG30 with auxiliary isolating contact
(1NC/1NO) for a rated current of 63 A, nominal fault current, 0.3 A)
 Siemens AG 2001 All rights reserved
SIMODRIVE 611 Planning Guide (PJU) – 05.01 Edition
05.01