Chapter 7 Peripheral Equipments
178
Voltage (V)
Power
(kW)
Current
(A)
Inductance
(mH)
Voltage (V)
Power
(kW)
Current
(A)
Inductance
(mH)
22
52
0.42
355
660
0.03
30
65
0.32
400
750
0.03
37
80
0.26
500
900
0.025
7.2.2 EMI Filter
EMI filter is used to restrain transmit of Electromagnetic Interference (EMI) and external radio interference;
including instant impulsion and surge
Table 7-3 Three-phase three-wire EMI filter selection
Voltage
(V)
Motor
Power
(kW)
Filter Type
Major Parameters of Filter
Common-model Input Loss
dB
Differential Model Input Loss
dB
0.1
MHz
1
MHz
30
MHz
0.1
MHz
1
MHz
30
MHz
Single-ph
ase 220
0.4
DL-5EBT1
75
85
55
55
80
60
0.75
DL-10EBT1
70
85
55
45
80
60
1.5
DL-20EBT1
70
85
55
45
80
60
2.2
Three-ph
ase 380
0.75
DL-5EBT1
75
85
55
55
80
60
1.5
2.2
DL-10EBT1
70
85
55
45
80
60
4
5.5~7.5
DL-20EBT1
70
85
55
45
80
60
11~15
DL-35EBT1
70
85
50
40
80
60
18.5~22
DL-50EBT1
65
85
50
40
80
50
30~37
DL-80EBT1
50
75
45
60
80
50
45
DL-100EBK1
50
70
50
60
80
50
55~75
DL-150EBK1
50
70
50
60
70
50
On occasions that have high requirements on the radio disturbance prevention and that are consistent with the CE,
UL and CSA standards, or in the case that there is the equipment without the adequate anti-disturbance ability around
the frequency inverter, etc, the filter should be used. When the filter is installed, the connection lines should be as
short as possible, and the filter should approach the frequency inverter as possible. The filter earthing cannot be
connected with the thin long wire. Instead, the external shell of filter should be fixed directly on the back plate of the
metal case, where the surface coating has been removed. The surface-contacting earthing manner can reduce the
high-frequency earthing impedance, so the filter can play its due role to the largest extent.
7.2.3 Braking Unit and Braking resistor
Brake units are installed inside this series of frequency inverters (Type 3015GB and the below). When dynamic
braking is required, the user just has to connect the braking resistor. There are not brake units with the inverters of
3018G and the above. When the dynamic braking is required, the additional braking unit should be connected. The
braking unit consists of the control part, the driving part and the discharging resistance. The control part should be
adjusted according to the overvoltage protection action values for this series of frequency inverters. If the
discharging resistance part is provided with the overheating protection, it is suggested that the controlling connection
