Information On The Disconnector Unit; Line-Side Overcurrent Protective Devices - Siemens SINAMICS S120 Combi Manual

Line-side power components

3.2 Information on the disconnector unit

3.2 Information on the disconnector unit
A line disconnector is required to correctly disconnect the drive line-up from the line supply.
The line disconnector of the machine's electrical equipment can be used for this purpose.
The line disconnector must be selected in compliance with the requirements of the
internationally binding standard relating to the electrical equipment of machines EN 60204-1,
Section 5.3. The relevant technical data and any other loads connected to the electrical
equipment must be taken into account when making your selection.
NOTICE
Damage to loads connected in parallel caused by switching the line disconnector while
under load
When switching the line disconnector under load, the voltage applied can damage external
loads located parallel to the drive on the same switching component.
• Firstly, interrupt the voltage at the X21 interface, terminal 3 (EP +24 V) and 4 (EP M) on
3.3

Line-side overcurrent protective devices

Table 3- 1 Recommended line fuses and circuit breakers for S120 Combi Power Modules
I fuse
n
LV HRC line fuse
Circuit breaker (IEC 60947)
UL-application
Line fuse
1)
Circuit breaker (DIVQ)
Type AJT Class J, source: Mersen
1)
34
the S120 Combi. This can be achieved with a leading disconnecting auxiliary contact (≥
10 ms), for example.
10 kW
35 A
3NA3814
3RV2031-4UA10
AJT 35
3VL2105-2KN30
16 kW 20 kW
35 A 63 A
3NA3814 3NA3822
3RV21031-4UA10 3RV2041-4JA10
AJT 35 AJT 60
3VL2105-2KN30 3VL2106-2KN30
Manual, 11/2017, 6SL3097-4AV00-0BP7
SINAMICS S120 Combi