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    Assembly
Accessory Electronic

Braking resistors  OHM-A and OHM-B

The DC-bus capacitors of the frequency inverters can only take a limited amount regenerative energy from the motor. To lead this additional energy to the outside, the inverters KEB COMBIVERT have an internal braking transistor. In addition to regenerative power supplies we offer a powerful program of braking resistors cabable to handle high peak loads as an economical solution.

General features are:

thermal protection by normally closed contact as standard
universal side-mounted units for peak load conditions and compact submounted modules to absorb pulse energy are deliverable.
no additional noise during braking
UL/ cUL-approved
 
  mBraking resistors Regenerative Systems

sketch
 

size
R
PD
P6
P25
P40
A x B x C
DD'
E
m
[W]
[W]
[W]
[W]
[W]
[mm]
[mm]
[mm]
07
180
44
800
300
180
40 x 165 x 24
-
148
09
100
82
1500
500
300
40 x 240 x 24
-
222
10
68
120
2200
800
500
40 x 300 x 24
-
285
12
33
250
4400
1300
750
80 x 300 x 26
-
285
13
27
300
5400
1500
900
80 x 400 x 26
-
385
14
20
450
7300
1800
1100
80 x 400 x 26
-
385
15
13
630
10000
3200
1800
63 x 370 x 96
-
355
16
10
850
14000
3600
2200
63 x 470 x 96
-
455
17
7
1100
21000
5400
3100
90 x 470 x 96
50
455
Braking resistors
KEB COMBIVERT
400 V AC
size
R
PD
P6
P25
P40
A x B x C
DD'
E
m
[W]
[W]
[W]
[W]
[W]
[mm]
[mm]
[mm]
07
620
56
900
300
180
40 x 165 x 24
-
148
09
390
90
1500
500
300
40 x 240 x 24
-
222
10
270
130
2100
800
500
40 x 300 x 24
-
285
12
150
230
3700
1300
750
80 x 300 x 26
-
285
13
110
350
5000
1500
900
80 x 400 x 26
-
385
14
85
410
6500
1800
1100
80 x 400 x 26
-
385
15
56
620
10000
3200
1800
63 x 370 x 96
-
355
16
42
820
13500
3600
2200
63 x 470 x 96
-
455
17
30
1200
18500
5400
3100
90 x 470 x 96
50
455

 


Braking resistors
KEB COMBIVERT
400 V AC
size
R
PD
P6
P25
P40
A x B x C
DD'
E
m
[W]
[W]
[W]
[W]
[W]
[mm]
[mm]
[mm]
18
20
1700
27500
7500
4500
266 x 611 x 116
240/176
526
19
15
2300
37000
10000
6000
266 x 611 x 116
240/176
526
20
12
2900
46000
12500
7500
266 x 631 x 221
240/176
526
21
10
3000
55000
15000
9000
266 x 631 x 221
240/176
526
22
8,6
4000
64000
17500
10000
266 x 631 x 271
240/176
526
23
6,7
5200
82000
22000
12500
266 x 631 x 271
240/176
526
24
5
6900
130000
30000
18000
266 x 631 x 221
240/176
526
25
4,3
8100
128000
35000
20000
266 x 631 x 271
240/176
526
26
3,8
9200
145000
40000
22500
266 x 631 x 271
240/176
526
27
3,3
10000
170000
45000
25000
266 x 631 x 271
240/176
526
28
2,2
15000
250000
67000
37000
266 x 631 x 271
240/176
526
29
1,7
20000
325000
90000
50000
266 x 631 x 271
240/176
526
30
1,3
26000
425000
112000
62000
266 x 631 x 271
240/176
526

PD continiuous rating / P6 Pulse rating with 6 sec. ON-time and period of 120 sec. / P25 Pulse rating with 25sec. ON-time and period of 120 sec. / P40 Pulse rating with 40 sec. ON-time and period of 120 sec

Number of modules: n = 2-fold n = 3-fold n = 4-fold n = 5-fold
         

Unterbaubremswiderstand:

The submounted braking resistors are prepared for a space-saving installation directly under the inverter and abailable for the unit sizes B, D, E and G. They are predominantly suited for short braking cycles as well as cyclic operation. The assembly kit consists of:
braking resistor
temperature switch
submounted box
mounting material