SCHAFFNHER FN 3258 Technical data

Ultra-compact EMC/RFI filter for
three-phase systems and motor drives

available for the whole range

n Exceptional attenuation performance

from 150kHz to 30MHz

n Excellent saturation resistance up to

50m cable length

n Most compact and slim filter design

in its class

3-phase filters

FN 3258

Approvalsn New: solid safety connector blocks

Technical specifications

Maximum continuous operating voltage: 3x 480/277VAC (FN 3258)
3x 520/300VAC (FN 3258H)
Operating frequency: dc to 60Hz
Rated currents: 7 to 180A @ 50°C
High potential test voltage: P –> E 2650VDC for 2 sec
P –> P 2100VDC for 2 sec
Protection category: IP20
Overload capability: 4x rated current at switch on,

1.5x rated current for 1 minute, once per hour
Temperature range (operation and storage): -25°C to +100°C (25/100/21)
Flammability corresponding to: UL 94V-2 or better
Design corresponding to: UL 1283, CSA 22.2 No. 8 1986, EN 60939
MTBF @ 50°C/400V (Mil-HB-217F): 300,000 hours

Features and benefits

n The extremely compact and slim filter

design allows a trouble-free installation

even where the available mounting space

is minimal.

n With new additional filter types providing

safety terminal blocks, the most preferred

connection style can be chosen fast and

easy. This helps to stay in line with the

electrical connection concept of a given

n Filter operation on the mains input side

of consumers increases their reliability and

conducted immunity significant.

n Chokes with exceptional saturation resist-

ance and excellent thermal behavior are a

vital part of FN 3258 design. Thus, all filters

retain the expected filter performance

even in very noisy applications and under

full load conditions.

application.

n FN 3258 filters ensure compliance with

Class A limits according to EN 55011 up to

50m cable length and beyond. Further

they can contribute significantly to meet

conducted emission limits according to

Class B.

Typical electrical schematic

L1

L2

L3

Cx R1

PE

Line

L

Cx

Cy

R2

L1‘

L2‘

L3‘

PE

Load

Typical applications

n Three-phase variable speed motor drives,

servo drives, inverters and converters

n Applications comprising energy conversion

devices like machines or process auto-

mation equipment

n HVAC equipment, elevators, power

supplies, UPS and further three-phase

applications

> Components > FN 3258

Filter selection table

Filter* Rated current Typical drive Leakage current*** Power loss Input/Output Weight
@ 50°C (40°C) power rating** @ 400VAC/50Hz @ 25°C/50Hz connections

[A] [kW] [mA] [W] [kg]

FN 3258-7-.. 7 (7.7) 4 33.0 3.8 -45 -44 0.5
FN 3258-16-.. 16 (17.5) 7.5 33.0 6.1 -45 -44 0.8
FN 3258-30-.. 30 (32.9) 15 33.0 11.8 -47 -33 1.2
FN 3258-42-.. 42 (46.0) 22 33.0 15.7 -47 -33 1.4
FN 3258-55-.. 55 (60.2) 30 33.0 25.9 -52 -34 2.0
FN 3258-75-.. 75 (82.2) 37 33.0 32.2 -52 -34 2.7
FN 3258-100-35 100 (109.5) 55 33.0 34.5 -35 4.3
FN 3258-130-35 130 (142.4) 75 33.0 43.1 -35 4.5
FN 3258-180-40 180 (197.1) 90 33.0 58.3 -40 6.0

FN 3258H-7-.. 7 (7.7) 4 33.0 3.8 -45 -44 0.5
FN 3258H-16-.. 16 (17.5) 7.5 33.0 6.1 -45 -44 0.8
FN 3258H-30-.. 30 (32.9) 18.5 33.0 11.8 -47 -33 1.2
FN 3258H-42-.. 42 (46.0) 22 33.0 15.7 -47 -33 1.4
FN 3258H-55-.. 55 (60.2) 37 33.0 25.9 -52 -34 2.0
FN 3258H-75-.. 75 (82.2) 45 33.0 32.2 -52 -34 2.7
FN 3258H-100-35 100 (109.5) 55 33.0 34.5 -35 4.3
FN 3258H-130-35 130 (142.4) 75 33.0 43.1 -35 4.5
FN 3258H-180-40 180 (197.1) 110 33.0 58.3 -40 6.0

* To compile a complete part number, please replace the -.. with the required I/O connection style.

** Calculated at rated current, 440VAC (FN 3258)/480VAC (FN 3258H) 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

Per CISPR 17; A = 50Ω/50Ω sym; B = 50Ω/50Ω asym; C = 0.1Ω/100Ω sym; D = 100Ω/0.1Ω sym

7 to 42A types 55 to 100A types

130 and 180A types