Characteristic Data <Reference Data>
NBH series
NBH-06-432
¡Attenuation Characteristic(Static characteristic)
0
Differential Mode
Common Mode
Attenuation[dB]
20
40
60
80
100
120
0.01
0.1
1
Frequency[MHz]
10
100
NBH-10-432
¡Attenuation Characteristic(Static characteristic)
0
Differential Mode
Common Mode
Attenuation[dB]
20
40
60
80
100
120
0.01
0.1
1
Frequency[MHz]
10
100
NBH-16-432
¡Attenuation Characteristic(Static characteristic)
0
Differential Mode
Common Mode
Attenuation[dB]
20
40
60
80
100
120
0.01
0.1
1
Frequency[MHz]
10
100
NBH-20-432
¡Attenuation Characteristic(Static characteristic)
0
Differential Mode
Common Mode
Attenuation[dB]
20
40
60
80
100
120
0.01
0.1
1
Frequency[MHz]
10
100
NBH-30-432
¡Attenuation Characteristic(Static characteristic)
0
Differential Mode
Common Mode
Attenuation[dB]
20
40
60
80
100
120
0.01
0.1
1
Frequency[MHz]
10
100
NF-51
Single Phase and Three Phase Input Type
1 Method of connecting
EMI/EMC Filter
(1) Three phase (Delta-connection)
2 Connection with a
general-purpose inverter
(servo driver)
The EMI/EMC Filter cannot be used between the inverter (servo
4
1
Instruction Manual
driver) and the motor, because the EMI/EMC Filter might cause
EMI/EMC
5
2
Filter
Device
abnormal heat.
Please connect the EMI/EMC Filter to input side of inverter driver
(servo driver).
6
3
EMI/EMC
Filter
Inverter
or
servo driver
possible
(2) Three phase (Star-connection)
EMI/EMC
Filter
1
4
2
EMI/EMC
5
Filter
3
6
possible
EMI/EMC
Filter
Motor
Single phase
input type
impossible
Inverter
or
servo driver
EMI/EMC
Filter
Three phase
input type
Motor
impossible
Device
[Reference] Example of calculating input current calculation
Input voltage 400 [V]
Input capacity of the equipment 4000 [VA]
3 Safety Considerations
¡ To apply for safety standard approval using this EMI/EMC Filter,
the following conditions must be met.
¿ The unit must be used as a component of an end-use equipment.
¿ Protection earth terminal (PE) must be connected to safety
ground of end-use equipment.
Input current =
4000 [VA]
400 [V]X 3
= 5.8 [A]
NF-81
EMI/EMC Filter
1 Noise Transmission
2 Application Precautions
The following points should be kept in mind to use the EMI/EMC
Filter more effectively.
6
Electronic device
Electronic device
2
¡ Input wire and output wire of the EMI/EMC Filter should be
separated.
When the input/output wire are bundled together or wired parallel
2
4
5
with each other, high frequency noise is induced so, and the
expected effect of noise attenuation cannot be achieved.
1
3
Electronic device
Input wire
Input wire
Output wire
Output wire
Noise transmission between electric power
and electronic device
1 Conducted noise from electric power lines.
2 Radiated noise which is picked up and generated by the power
line as antenna.
3 Conducted and radiated noise which is generated in the
electronic device.
4 Conducted noise which is generated by the signal lines
betweeen electronic devices.
5 Radiated noise emitted an electronic device that interferes with
other device.
6 Radiated noise which is picked up and generated by the signal
line as antenna.
Good wiring example
Bad wiring example
¡ Ground lines should be as short as possible. If it is not, an
equivalent inductance appears, and the high frequency
attenuation characteristics degrade. When grounding the
mounting plate of the EMI/EMC Filter, you should remove the
paint to reduce the contact resistance from the equipment case,
and then install the EMI/EMC Filter.
NF-90
EMI/EMC Filter
Attenuation= 20log(U01/U02)[dB]
U01 : Voltage in state without filters
U02 : Voltage in state which added filters
N.A. : Network analyzer
3 Method of measuring characteristic data
(1) Attenuation Characteristic(Static characteristic)
Object product:Single phase input type
N.A.
N.A.
N.A.
N.A.
3
1
50
W
50
W
Balun
Balun
50
W
EMI/EMC
Filter
Balun
U01
2
4GHGTGPEG%QPPGEVKQP
50
W
Balun
U02
4
6GUV%QPPGEVKQP
Fig.3.1 Differential mode attenuation measurement diagram
N.A.
N.A.
N.A.
N.A.
3
1
50
W
50
W
50
W
50
W
EMI/EMC
Filter
U01
2
Reference Connection
U02
4
Test Connection
Fig.3.2 Common mode attenuation measurement diagram
Object product:Three phase input type
N.A.
N.A.
N.A.
N.A.
4
1
50
W
Balun
50
W
Balun
50
W
EMI/EMC
2 Filter 5
Balun
U01
3
Reference Connection
50
W
Balun
U02
6
Test Connection
Fig.3.3 Differential mode attenuation measurement diagram
N.A.
N.A.
N.A.
N.A.
4
1
50
W
50
W
50
W
50
W
EMI/EMC
2 Filter 5
U01
3
Reference Connection
U02
6
Test Connection
Fig.3.4 Common mode attenuation measurement diagram
Object product:DC input type
N.A.
N.A.
N.A.
N.A.
+Vin
50
W
Balun
50
W
50
W
Balun
U01
Balun
COM-in
N.A.
COM-out
+Vin
Balun
50
W
U 02
(SNA)
-Vin
Reference Connection
N.A.
+Vout
EMI/EMC
Filter
50
W
Balun
+Vout
EMI/EMC
Filter
Balun
50
W
(SNR)
-Vout
-Vin
Test Connection(SNA)
U 02
-Vout
Test Connection(SNR)
Fig.3.5 Differential mode attenuation measurement diagram
N.A.
N.A.
N.A.
N.A.
+Vin
50
W
50
W
COM-in
U01
Reference Connection
N.A.
+Vin
50
W
COM-out
50
W
U02
(SNA)
-Vin
N.A.
+Vout
EMI/EMC
Filter
50
W
-Vout
50
W
(SNR)
-Vin
Test Connection(SNA)
+Vout
EMI/EMC
Filter
U02
-Vout
Test Connection(SNR)
Fig.3.6 Common mode attenuation measurement diagram
(2) Pulse Attenuation Characteristic
50W
Noise
Simulator
1
3
EMI/EMC
2 Filter 4
50
W
Vi
Vo
Vi
50
W
50
W
Vo
1msec
Input pulse waveform
Output pulse waveform
Single phase input type
Fig.3.7 Pulse attenuation measurement diagram
NF-91