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2. In North America, the delay type fuse (the current rated value of which should be 225% of the maximum full
load output current value) should be used before the drive to isolate the faults caused by other equipments.
For the selection of the fuse, please refer to Table 3-1.
Table 3-1 Recommended fuse capacity and cross section area of the copper-cored insulation wire
Model
Incoming line
protection
Main circuit
（mm
2
）
Control circuit
(mm
2
)
Fuse (A)
Input
wire
Output
wire
Control
terminal wire
0.75HD 5 1 1 1
1.5HD 10 1.5 1.5 1
2.2HD 10 1.5 1.5 1
3.7 HD 15 2.5 2.5 1
5.5HD 20 4 4 1
7.5HD 32 6 6 1
11HD 35 6 6 1
15HD 50 6 6 1
18.5HD 63 10 10 1
22HD 80 16 16 1
30HD 100 25 25 1
37HD 100 25 25 1
45HD 125 35 35 1
55HD 160 35 35 1
75HD 200 70 70 1
90HD 250 70 70 1
110HD 315 95 95 1
132HD 400 150 150 1
160HD 450 185 185 1
200HD 560 240 240 1
220HD 630 150×2 150×2 1
280HD 800 185×2 185×2 1
315HD 800 150×3 150×3 1
355HD 800 150×4 150×4 1
400HD 1000 150×4 150×4 1
Note
: The parameters listed in this table are recommended values.
3. When the contactor is used to control the AC supply, do not power on/off the drive directly through the
contactor.
4. DC reactor
To prevent the influence of the AC supply on the drive, protect the drive and suppress the high-order
harmonics, DC reactor should be configured in the following situations.
·If a capacitor tank used for reactive power compensation or a SCR load shares the same AC supply with the
drive, the harmonics caused by the SCR load or the capacitor tank when it is switched on or off may damage
the drive’s input rectifying circuit.
·The unbalance of the three-phase power supply for the drive exceeds 3%.
·It is required to increase the drive input power factor to more than 0.93.
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