SIEMENS
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Siemens D 35 · 2017
4
SINAMICS G120P built-in and wall-mounted units
PM330 Power Modules, 160 kW to 630 kW
Braking resistors
■
Overview
Braking resistor
Excess energy in the DC link is dissipated in the braking resistor.
The braking resistor is connected to the Braking Module. The
braking resistor is positioned outside the cabinet or switchgear
room. This enables the resulting heat loss to be removed from
the area of the Power Modules. The level of air conditioning re-
quired is therefore reduced.
A temperature switch (NC contact) is fitted. This responds when
the maximum permissible temperature is exceeded and can be
evaluated by a controller. The maximum permissible cable
length between the Braking Module and braking resistor is
100 m (328 ft).
■
Selection and ordering data
■
Technical specifications
■
Characteristic curves
Load diagram for Braking Modules and braking resistor
Rated power
P
DB
Braking Module
Braking resistor
kW
Article No.
380 ... 480 V
3 AC
50
6SL3760-1AE32-6AA0
6SE7032-5FS87-2DC0
Line voltage 380 V... 480 V 3 AC
Braking resistor
6SE7032-5FS87-2DC0
Resistance
3.1
Ω
(± 10 %)
Rated power
P
DB
(Continuous braking power)
50 kW
Power
P
20
200 kW
Current, max.
378 A
Cable connections
M12 stud
• Power cable, max.
70 mm
2
• PE/GND, max.
50 mm
2
Cable length to Braking Module,
max.
≤
100 m (328 ft)
Degree of protection
IP20
Dimensions
• Width
740 mm (29.1 in)
• Height
1325 mm (52.2 in)
• Depth
485 mm (19.1 in)
Weight, approx.
109 kg (240 lb)
Suitable for Braking Module
6SL3760-1AE32-6AA0
20
P
20
P
DB
P
DB
G_D011_EN_00401
P
DB
P
/
P
DB
0.25
0
0.50
0.75
1.00
= 4 x
= power permissible every 90s for 20s
= continuous braking power
P
s 100110
90
80
70
60
50
40
30
20
10
t
© Siemens AG 2017