Chapter 7 Peripheral Equipments
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200
7.2 Function of Peripheral Equipments
Table 7-1 Function of Peripheral Equipments
Peripherals
and
Options
MCCB MC *ACL *EMI-NF *U
B
&R
B
Description
Cut off
failure
Current
fast and
Other
circuit
resulting
in power
source
failure
Cut off
mains
power
supply
and
prevent
power
failure
restart
and fault
restart
Improve
input power
factor.
Decrease
higher
harmonic
wave and
suppress
surge of
power source
Decrease
radio noise
generated
by ac drive
Applicable
when
Brake torque
cannot meet
the need.
Used for
large inertia,
frequent
brake and
quick stop.
Note: in the part list, which is marked with *, is an option.
7.2.1 AC reactor
Using AC reactor can restrain higher harmonic wave and improve power factor
obviously. In the following situation, users are advised to use ac reactor.
●Ratio of capacity: power supply source: Ac drive>10:1
●Silicon controlled load and switching controlled power factor compensator in a same
place.
●Degree of three-phase voltage unbalance is more than 3%
Table 7-2 AC reactor selection
Voltage
（V）
Power
（kW）
Current
（A）
Induct
ance
(mH)
Power
（kW）
Current
（A）
Induct
ance
(mH)
0.4 5.1 10 45 96 0.21
0.75 9.2 7.6 55 128 0.18
1.5 13 4.8 75 165 0.13
Single-p
hase
220
2.2 25 3.2 93 195 0.11
0.75 3.7 7.6 110 22 0.09
1.5 5.4 4.8 132 262 0.08
2.2 7 3.2 160 302 0.06
4 11 2.0 185 364 0.05
5.5 14 1.5 200 385 0.05
Three
-phase
380
7.5 18 1.2
Three
-
hase
380
220 420 0.05
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