Features and Benefits

• FN3287 and FN3288 series of filters provides state-of-the-art EMI attenuation based on an innovative filter topology. They help to ensure compliance with Class C2 or even C1 limits.
• The slim book-style shape allows a convenient and space-saving installation next to inverters, converters or motor drives.
• The compact FN3287 and FN3288 filter from 10 to 230A are designed for the most diverse applications worldwide, including machinery and machine tools.
• FN3288HV filters up to 230 A are applicable for 690 VAC distribution networks.
• FN 3288IT and FN 3288HVIT filters up to 230 A meet the special requirements for IT distribution networks.
• Low leakage current filter versions help to fulfill tough requirements (e.g. 0.1 mA) in respect of leakage current limitation.

Typical Applications

• Three-phase variable speed drives and power drive systems (PDS)
• Machine tool and machinery equipment
• IT power distribution networks (FN3288IT and FN3288 HVIT)
• General energy conversion devices (inverters, converters)
• Process automation equipment
• Three-phase power supplies 
• Low-leakage current requirements

Technical Specifications

Maximum continuous operating voltage

3×530/305 VAC (FN3287, FN3288)

3×530 VAC (FN3288IT)

3×760/440 VAC (FN3288HV)

3×760 VAC (FN3288HVIT)

Nominal operating voltage

480 VAC (FN3287, FN3288, FN3288IT)

690 VAC (FN3288HV, FN3288HVIT)

Rated currents

10 to 230 A

10 to 230 A @ 50°C

Overload capability

6x rated current for 1 sec, once per hour

1.5x rated current for 1 minute, once per hour

Operating frequency

DC to 60 Hz

High potential test voltage

P -> E 2260 VDC for 2 s (FN3287, FN3288)

P -> E 2900 VDC for 2 s (FN3288IT)

P -> P 2280 VDC for 2 s (FN3287, FN3288, FN3288IT)

P -> E 2650 VDC for 2 s (FN3288HV)

P -> E 3530 VDC for 2 s (FN3288HVIT)

P -> P 3270 VDC for 2 s (FN3288HV)

Overvoltage category

III acc. IEC 60664-1

Pollution degree

3 acc. IEC 60664-1

Temperature range (operation and storage)

-40°C to +100°C (with current derating >50°C)

Climatic category

40/100/21 acc. to IEC 60068-1

Protection category

IP 20 acc. to IEC 60529

Flammability corresponding to

UL 94 V-0

Vibration and shock

3M4 (operation)

2M2 (transport) acc. to IEC 60721-3-3

IEC 60721-3-2

Design corresponding to

UL 60939-3, IEC 60939-3

SCCR**

100 kA acc. to UL508 – high fault current

Compliance with insulation requirement

> 1MOhm acc. to IEC 60204-1

MTBF (Mil-HB-217F)

>200,000 h @ 50°C/480 V

** SCCR (High Fault Current acc UL508): 100 kA, with overcurrent protection of J-Type current limiting fuses. Fuse rating shall not exceed 150% of filter current rating.