SIEMENS
5/7
Siemens D 35 · 2017
5
SINAMICS G120P Cabinet, converter cabinet units
SINAMICS G120P Cabinet, 75 kW to 630 kW
SINAMICS G120P Cabinet
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Configuration
Cable cross-sections and connections
The table below lists the recommended and maximum possible
cable connections at the line and motor ends (versions A and C).
The recommended cross-sections are based on the specified
fuses. They are applicable for 3-wire cables manufactured out of
copper with PVC insulation, routed horizontally in air and a per-
missible wire temperature of 70 °C (158 °F) (e.g. Protodur NYY
or NYCWY) for an ambient temperature of 40 °C (104 °F) and
individual routing.
When the conditions differ from those specified above (cable
routing, cable grouping, ambient temperature), the appropriate
correction factors according to IEC 60364-5-52 must be taken
into account.
Cable cross-sections required for connecting to the line
supply and to motors
It is always recommended to use shielded - for higher power rat-
ings - where possible symmetrical, 3-wire three-phase cables
between the converter and the motor, and where required, to
connect several of these cables in parallel. There are essentially
2 reasons for this:
•
Only then can the high IP55 degree of protection at the motor
terminal box be easily achieved. The reason for this is that
cables are routed into the terminal box through glands, and
the number of possible glands is restricted by the terminal box
geometry. Individual cables are less suitable in achieving this.
•
With symmetrical 3-wire three-phase cables, the summed
ampere-turns over the cable outer diameter are equal to zero.
They can easily be routed in conductive, metal cable ducts or
racks without any significant currents (ground current or
leakage current) being induced in these conductive, metal
connections. The danger of induced leakage currents, and
thus of increased cable sheath losses, is significantly higher
for single-wire cables.
The cable cross-section required depends on the current being
conducted in the cable. The permissible current loading of
cables is defined, for example, in IEC
60364-5-52. It depends on
ambient conditions, such as temperature, but also on the routing
method. It should be taken into account as to whether cables are
routed individually and therefore relatively well ventilated, or
whether groups of cables are routed together. In the latter case,
the cables have significantly poorer ventilation and can therefore
heat one another up more significantly. For the relevant
correction factors applicable to these boundary conditions,
please refer to IEC 60364-5-52.
The table below provides a guide to the recommended cross-
sections (based on IEC 60364-5-52) for PVC-insulated, 3-wire
copper and aluminum cables, a permissible conductor tem-
perature of 70 °C (158 °F) (e.g. Protodur NYY or NYCWY), and
an ambient temperature of 40 °C (104 °F).
Rated power
Converter
Line supply connection
Motor connection
Cabinet grounding
400 V/690 V
SINAMICS G120P
Cabinet versions A
and C
Recom-
mended
cross-
section
1)
Maximum
conductor
cross-
section
Fixing screw
Recom-
mended
cross-
section
1)
Maximum
conductor
cross-
section
Fixing screw
Maximum
conductor
cross-
section
Fixing screw
IEC
IEC
IEC
IEC
IEC
kW
6SL3710- ...
mm
2
mm
2
mm
2
mm
2
mm
2
380 ... 480 V 3 AC
75
1PE31-5AB0-Z
50
2 × 120
M12
50
2 × 120
M12
2 × 120
M12
90
1PE31-8AB0-Z
70
70
110
1PE32-1AB0-Z
95
95
132
1PE32-5AB0-Z
95
2 x 50
160
1PE33-0 . A0-Z
2 × 120
2 × 240
2 × 95
2 × 240
M12 × 40
2)
3 × 240
200
1PE33-7 . A0-Z
2 × 120
2 × 95
250
1PE34-6 . A0-Z
2 x 185
2 x 150
315
1PE35-8 . A0-Z
2 x 240
4 × 240
2 x 185
4 x 240
6 x 240
355
1PE36-6 . A0-Z
3 x 150
2 x 240
400
1PE37-4 . A0-Z
3 x 185
2 x 240
450
1PE38-4AA0-Z
4 x 185
6 × 240
4 × 150
4 × 240
6 × 240
500
1PE38-8AA0-Z
4 x 185
4 × 150
6 × 240
560
1PE41-0AA0-Z
4 x 240
4 × 150
500 ... 690 V 3 AC
315
1PG33-7 . A0-Z
2 x 120
4 × 240
M12
2 × 120
4 x 240
M12 × 40
2)
6 × 240
M12
355
1PG34-0 . A0-Z
2 x 150
2 × 120
400
1PG34-5 . A0-Z
2 x 185
2 x 150
450
1PG35-2 . A0-Z
3 x 120
3 x 95
500
1PG35-8AA0
2 x 240
6 × 240
2 x 185
4 x 240
560
1PG36-5AA0
3 x 185
2 x 240
630
1PG37-2AA0
3 x 185
2 x 240
1)
The recommendations for the North American market in AWG or MCM
should be taken from the appropriate NEC (National Electrical Code) or
CEC (Canadian Electrical Code) standards.
2)
The connecting blocks can be damaged when using longer screws.
© Siemens AG 2017