2-8
2-3-5 Applicable devices and wire size as standard
DB unit Braking resistor
Tightening torque
(N
･
m)
Recommended wire size
(
mm
2
) ∗1)
Voltag
e
Applied
motor
(kW)
Type No.
Type
Resistanc
value
(
Ω
)
No.
Main
circuit
Ground-
ing
Control
DB cct.
(P(+),
N(-),P(+)R,DB)
Ground.
(
G)
Control
30 1
DB30-2C 4.0 1
2
37
BU37-2C
1
DB37-2C 3.0 1
3.5
45 1
DB45-2C 2.5 1
3.5
55
BU55-2C
1
DB55-2C 2.0 1
5.5
75 1
DB75-2C 1.6 1
8
200V
90
BU90-2C
1
DB110-2C
1.2 1
13.5
0.7
14
1.25
30 1
DB30-4C 15 1
37
BU37-4C
1
DB37-4C 12 1
1.8
45 1
DB45-4C 10 1
55
BU55-4C
1
DB55-4C 7.5 1
5.8
3.5
75 1
DB75-4C 6.5 1
2
90
BU90-4C
1
1
3.5
110 1
DB110-4C
4.7
1
132
BU132-4C
1
DB132-4C
3.9 1
13.5 5.5
160 1
DB160-4C
3.2 1
8
200 1
DB200-4C
2.6 1
400V
220
BU220-4C
1
DB220-4C
∗2)
2.2 1
27
0.7
14
1.25
∗1) The type of using wire is 75°C 600V Grade heat-resistant
polyvinyl chloride insulated wire (HIV).
The above-mentioned wire sizes are the recommended size
under the condition of the ambient temperature 50°C or lower.
∗2) A DB220-4C set is constructed by 2 cabinets.
These 2 resistors are used connecting in parallel.
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