3-phase + neutral line flters fn 256 compact general purpose three-phase and neutral line emc flter approvals n three-phase and neutral line filter for general purpose four-wire filtering n compact space-saving design n choice of connection style n low operating leakage current typical applications n fn 256 filters are designed specifically for applications involving asymmetric loads, ranging from industrial controls to medical electronics systems. these typically involve insufficiently filtered converters and switch-mode power supplies on different phases, causing current imbalance and significant interference problems. n employing single-stage filter circuits for each phase and the neutral line, fn 256 fil- ters provide high attenuation of both sym- metrical and asymmetrical interference. n used as a mains input filter, fn 256 filters also increase conducted immunity and thus contribute to overall system reliability. n choice of connection style as well as filter ratings in line with common fuse values support a fast and easy application-specific filter selection and deployment. n a light weight aluminium housing with a small footprint ensures that the filters can be easily accommodated on control panels and in tight power cabinets. n general purpose four-wire filtering n high-power office equipment n power supplies n ups n medical applications n electrical cabinets n control panels features and benefits technical specifications maximum continuous operating voltage: 3x 480/277vac (fn 256) 3x 520/300vac (fn 256 -h) operating frequency: dc to 60hz rated currents: 8 to 160a @ 50c high potential test voltage: p C> e 2650vdc for 2 sec (fn 256) p C> p 2100vdc for 2 sec (fn 256) p C> e 3000vdc for 2 sec (fn 256 -h) p C> p 2250vdc for 2 sec (fn 256 -h) protection category: ip20 ip00 (filters with connectors -28) overload capability: 4x rated current at switch on, 1.5x rated current for 1 minute, once per hour temperature range (operation and storage): -25c to +100c (25/100/21) flammability corresponding to: ul 94v-2 or better design corresponding to: ul 1283, csa 22.2 no. 8 1986, iec/en 60939 mtbf @ 50c/400v (mil-hb-217f): 600,000 hours typical electrical schematic l1 l2 l3 line l l1 l2 load l3 cx e r e cy n n r1
> components > fn 256 per cispr 17; a = 50/50 sym; b = 50/50 asym; c = 0.1/100 sym; d = 100/0.1 sym typical filter attenuation 5 and 8a types 16a types 25a types 36a types 64a types 80a types 120a types 160a types * to compile a complete part number, please replace the -.. with the required i/o connection style. ** maximum leakage under normal operating conditions, based on the assumption that all three phases and the neutral conductor are connected to the supply and the consumer. in this case, the current will mainly return through the neutral line, not as earth leakage. *** filters with -28 connections are rated for 40c environmental temperature only. filter* rated current leakage current** power loss input/output weight @ 50c (40c) @ 400vac/50hz @ 25c/50hz connections [a] [ma] [w] [kg] filter selection table fn 256-8-46 8 (8.8) 3.4 2.7 -46 0.8 fn 256-16-46 16 (17.5) 3.4 6.0 -46 1.1 fn 256-25-47 25 (27) 3.4 11.6 -47 1.4 fn 256-36-47 36 (39) 3.4 14.8 -47 1.5 fn 256-64-52 64 (70) 3.4 18.4 -52 2.2 fn 256-80-.. 80 (88) 3.4 18.8 -28*** -34 4.5 fn 256-120-.. 120 (131) 5.0 25.1 -28*** -35 6.1 fn 256-160-.. 160 (175) 6.8 30.7 -28*** -40 8.0 fn 256-8-46-h 8 (8.8) 3.6 2.7 -46 0.8 fn 256-16-46-h 16 (17.5) 3.6 6.0 -46 1.1 fn 256-25-47-h 25 (27) 3.6 11.6 -47 1.4 fn 256-36-47-h 36 (39) 3.6 14.8 -47 1.5 fn 256-64-52-h 64 (70) 3.6 18.4 -52 2.2 fn 256-80-..-h 80 (88) 3.6 18.8 -28*** -34 4.5 fn 256-120-..-h 120 (131) 5.4 25.1 -28*** -35 6.1 fn 256-160-..-h 160 (175) 7.4 30.7 -28*** -40 8.0
> components > fn 256 your local partner: to find your local partner within schaffners global network, please go to www.schaffner.com october 200 6 mechanical data 8 to 64a types 80 to 160a types (-28) 80 to 160a types (-34, -35, -40) all dimensions in mm; 1 inch = 25.4mm tolerances according: iso 2768 / en 22768 8a 16a 25a 36a 64a 80a (-28) 80a (-34) 120a (-28) 120a (-35) 160a (-28) 160a (-40) dimensions a 120 120 130 130 140 160 160 180 180 200 200 b 143 143 153 153 153 170 170 170 170 170 170 c 80 80 115 115 125 110 110 130 140 130 160 d 115 115 125 125 125 140 140 140 140 140 140 e 80 80 90 90 100 110 110 130 130 150 150 f 127.5 127.5 137.5 137.5 137.5 153.5 153.5 153.5 153.5 153.5 153.5 g 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 6.5 h 1 1 1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 i 18 18 18 18 18 30 39 30 45 30 49.5 j m6 m6 m6 m6 m6 m10 m10 m10 m10 m10 m10 k 12 12 13 13 13 17.5 17.5 17.5 17.5 17.5 17.5 l 33 33 50 50 50 30 30 30 30 30 30 please visit www.schaffner.com to find more details on filter connectors. -28 (m10) -34 -35 -40 -46 -47 -52 filter input/output connector cross sections solid wire n/a 35mm 2 50mm 2 95mm 2 10mm 2 16mm 2 25mm 2 flex wire n/a 25mm 2 50mm 2 95mm 2 6mm 2 10mm 2 16mm 2 awg type wire n/a awg 2 awg 1/0 awg 4/0 awg 10 awg 8 awg 4 recommended torque 17 - 18nm 4.0 - 4.5nm 7 - 8nm 17 - 20nm 0.7 - 0.8nm 1.9 - 2.2nm 1.9 - 2.2nm
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