EMC/EMI Filter for Installations with Residual Current Device (RCD)
Full functionality with RCDs according to IEC
61008 and new VDE 0664-110*
Approvals
Compatible with 30 mA RCDs up to 30 m motor
cable for electric shock protection according to
IEC 61008
Compatible with 300 mA RCDs up to 100 m
motor cable for fire protection according to IEC
60364-4-42 (VDE 0100-482)
Features and benefits
Innovative low-leakage current filter with same
smallest dimensions as FN 3258
Significant reduction of leakage and ground
currents caused by long motor cables
Prevents unwanted fault shut-downs from RCDs in
machines and process automation equipment
Patented filter design avoiding early saturation and
ringing effects
Excellent attenuation compliant with: C1 limits EN
61800-3 with 30 meter motor cable and 30 mA RCD
(electric shock protection)**
C2 limits EN 61800-3 with 100 meter motor cable
and 300 mA RCD (fire protection)
Typical applications
Three-phase variable speed drives (VSD), servo
drives, and inverters
Machinery and process automation equipment
Technical specifications
Design corresponding to
Flammability corresponding to
High potential test voltage
Maximum continuous operating voltage
MTBF @ 50°C/400V (Mil-HB-217F)
Operating frequency
Overload capability
UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939
UL 94 V-2 or better
P –> E 2650 VDC for 2 sec
Building automation, HVAC equipment, pumps,
ventilation, and elevators
Conveyors, handling and storage systems, and
cranes
Machine tools, wood working machines, and
printing machines
P –> P 2100 VDC for 2 sec
3x 520/300 VAC
>300,000 hours
dc to 60 Hz
Typical electrical schematic
Protection category
Rated currents
4x rated current at switch on,
1.5x rated current for 1 minute, once per hour
IP20
7 to 180 A @ 50 °C
** If supply voltage is contaminated with harmonics according to IEC 61000-2-4, class 2,
**
where odd-numbered multiplies of three are limited to 30%.
** Filter types 7 A up to 42 A: C1, 30 m, 30 mA; 55 A: C2, 30 m, 30 mA; 75 A up to 180 A: C2, 100m, 300 mA
Temperature range (operation and storage)
-25 °C to +100 °C (25/100/21)
2
EMC/EMI Products
Schaffner Group
Datasheets
2014
Filter selection table
Filter
@ 50 °C (40 °C)
7 (7.7)
[A]
Rated current
power rating*
Typical drive
[kW]
Leakage current**
@ 400 VAC/50 Hz
[mA]
4.5
@ 25 °C/50 Hz
[W]
4.5
Power loss
Input/Output
connections
-44
Weight
[kg]
FN 3268-16-44
FN 3268-7-44
FN 3268-30-33
FN 3268-42-33
FN 3268-55-34
FN 3268-75-34
FN 3268-100-35
FN 3268-130-35
FN 3268-180-40
16 (17.5)
30 (32.9)
42 (46.0)
55 (60.2)
100 (109.5)
130 (142.4)
180 (197.1)
75 (82.2)
18.5
22
37
45
55
75
7.5
4
4.7
4.6
4.7
7.8
4.6
17.4
18.1
25.3
13.5
6.1
-44
0.5
-33
-34
-34
-33
0.8
1.4
2.2
2.9
1.2
20.5
30.4
37.0
30.0
38.0
48.6
-35
-35
-40
4.1
4.6
6.0
110
* Calculated at rated current, 440 VAC and cos phi = 0.8. The exact value depends upon the efficiency of the drive, the motor and the entire application.
** Maximum leakage under normal operating conditions. Note: if two phases are interrupted, worst case leakage could reach 5.4 times higher levels.
Typical filter attenuation
7 to 42 A types
Per CISPR 17; A = 50 Ω/50 Ω sym; B = 50 Ω/50 Ω asym; C = 0.1 Ω/100 Ω sym; D = 100 Ω/0.1 Ω sym
55 to 100 A types
130 and 180 A types
Installation
EMC/EMI filter FN 3268
Filter types from 7 to 55 A are designed to be
compatible with 30 mA RCDs according to IEC
61008 and new VDE 0664-110 standards. Filters
from 75 up to 180 A are designed to be
compatible with 300 mA RCDs. Install the filter as
close as possible at line side of the motor drive.
Regarding correct EMC installation, please refer to
the EMC installation guide in the manual from
motor drive supplier.
Typical installation with RCD, EMC/EMI filter and motor
drive system
Motor cable length
Motor cable length should not exceed 30 meters for
7 up to 55 A filter types to fulfill class C1 of
recommended standard EN 61800-3. For 75 up to
180 A filters, cable length should not exceed 100
meters to fulfill class C2.
Internal EMC/EMI components
Please disconnect all internal Y-capacitors (internal
EMC/EMI filters) in the motor drive, because these
capacitors cause additional leakage currents.
Harmonics on line voltage
High voltage harmonics can create additional
system leakage currents. FN 3268 filters are tested
under following conditions: Supply voltage is
contaminated with harmonics according to IEC
61000-2-4, class 2, where odd-numbered multiplies
of three are limited to 30%.
RCD
Please note that for electrical devices with 6-pulse
rectifiers at line input, like three-phase motor
drives, a RCD type B or B+ is required. RCD with
time delay are needed to prevent unwanted fault
trip at switch on or voltage spikes. These RCD
types B with time delay have often an added letter
“S” or “K”, please ask the supplier for correct type.
Caution: Please validate system with chosen RCD
to guarantee functionality.
Motor drive
Please set the PWM pulse pattern of the variable
speed motor drive fixed to 4 kHz. Other pulse
patterns cause higher leakage currents. Filter
designs with other pulse pattern than 4 kHz are
possible upon request.
3
EMC/EMI Products
Schaffner Group
Datasheets
2014
Mechanical data
FN 3268
Note: in favour of a better readability, connectors and earth studs are not shown in
the horizontal projection.
Dimensions
A
B
C
E
F
7A
190
40
70
16 A
250
45
70
30 A
270
50
85
42 A
310
50
85
55 A
250
85
90
75 A
270
80
100 A
270
90
130 A
270
90
180 A
D
160
180
4.5
22
20
20
220
235
5.4
22
25
240
255
5.4
25
30
280
295
5.4
25
30
220
235
5.4
39
60
135
240
255
6.5
39
60
150
240
255
6.5
45
65
150
120
380
240
255
6.5
45
65
170
350
365
6.5
G
H
I
J
102
1.5
M10
1
1
1
1
1
1.5
M6
1.5
M10
1.5
M10
K
L
M5
29.5
22.5
M5
M5
29.5
39.5
25
M6
37.5
25
42.5
M6
51
60
26.5
70.5
40
45
64
45
64
47
All dimensions in mm; 1 inch = 25.4 mm
Tolerances according: ISO 2768-m / EN 22768-m
Filter input/output connector cross sections
-33
-34
-35
-40
-44
Solid wire
Flex wire
AWG type wire
Recommended torque
16 mm
2
10 mm
2
1.5-1.8 Nm
AWG 6
35 mm
2
25 mm
2
4.0-4.5 Nm
AWG 2
50 mm
2
AWG 1/0
7-8 Nm
50 mm
2
95 mm
2
AWG 4/0
95 mm
2
10 mm
2
6 mm
2
17-20 Nm
1.5-1.8 Nm
AWG 8
Please visit www.schaffner.com to find more details on filter connectors.
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