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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
0.75G/0.75P/1.5P 5 1 1 1
1.5G/2.2P 10 1.5 1.5 1
2.2G/3.7P 10 1.5 1.5 1
3.7G/5.5P 15 2.5 2.5 1
5.5G 20 4 4 1
7.5G/7.5P 32 6 6 1
11G/11P/15P 35 6 6 1
15G/18.5P 50 6 6 1
18.5G/22P 63 10 10 1
22G/30P 80 16 16 1
30G/37P 100 25 25 1
37G/45P 100 25 25 1
45G/55P 125 35 35 1
55G/75P 160 35 35 1
75G/90P 200 70 70 1
90G/110P 250 70 70 1
110G/132P 315 95 95 1
132G/160P 400 150 150 1
160G/200P 450 185 185 1
200G/220P 560 240 240 1
220G/280P 630 150×2 150×2 1
280G/315G/315P 800 185×2 185×2 1
355P 800 150×3 150×3 1
355G/400P 800 150×4 150×4 1
400G 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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