7
05.01
7.3 Overcurrent protective devices, transformers and main switch
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©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
7.3.5
Assigning the main switches
The main switches must be chosen appropriately for the machine (scope of the
installation), the supply line characteristics (voltage, short–circuit power), re-
gional regulations for plant/machine constructors.
Recommendation:
Siemens 3LD.../3KA... switch types (as listed in the SIEMENS ”Low–Voltage
Switchgear” catalog)
Table 7-12
Assignment of the main and auxiliary switches, e.g. only one NE module and short–circuit power
SCCR 65 kA
For UI modules
5 kW
10 kW
28 kW
Switch
type
3LD2103–0TK...
+
3LD9220–3B
3LD2504–0TK...
+
3LD9250–3B
3LD2704–0TK...
+
3LD9280–3B
For I/R modules
16 kW
36 kW
55 kW
80 kW
120 kW
Switch
type
3LD2504–0TK...
+
3LD9250–3B
3LD2704–0TK...
+
3LD9280–3B
3KA5330–1EE01
+
3KX3552–3EA01
3KA5530–1EE01
+
3KX3552–3EA01
3KA5730–1EE01
+
3KX3552–3EA01
7.3.6
Use of a leading contact for line isolating device
For various plant and system configurations the use and the correct connection
of a leading contact (integrating terminal 48) for the switching element is either
absolutely necessary or not required. In this connection, switching elements
are:
Power disconnectors (mains switch, line supply contactor)
Note
During the shutdown, to prevent damaging overvoltages that can damage
parallel–operated loads, terminal 48 of the NE modules must be switched off
10 ms before deenergizing the line supply contacts.
Main switches (breakers) with leading auxiliary contact can be used to ensure
that terminal 48 of the NE modules is deenergized using a leading contact.
Leading shutdown is not required for certain drive configurations.
For information refer to Section 7.3.6.
7 Line Supply Connection
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