GE IFC95AD Instruction Manual

TYPES IFC95AD AND IFC95BD GEK-49950A Supersedes GEK-49950 GENERAL f) ELECTRIC www . ElectricalPartManuals . com ...

A PPLICAT ION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . ...

TYPES IFC95AD AND •fC95BD DESCRIPTION The Type IFC95AD relay is an extended-range, sing le-phase, time overcurrent relay having a short inverse-time characteristic. The IFC95BD is similar except that it a lso incl udes a h inged-armature instantaneous-overcurrent unit. Both the time-overcurrent unit and the instantaneous-o ...

1 4 co n nectio n po ints, and a visib le current transfo rmer (CT) sho rting bar located up f ro nt. As the co nnectio n plug is w ithdrawn, it clears the sho rter co ntact f ingers in the o utput co ntact ci rcu its f i rst. Th us, the trip circu ...

GEK-49950 TABLE I Freq uency (Hertz) 50 and 60 Cu rrent Ranges (A mperes) 0.5- 4.0 1.0- 1 2.0 Avai lab le taps for the ti me-overcurrent unit are shown in Table II. Range (A mperes) 0.5- 4.0 TABLE II Taps Available (A mperes) 0.5, 0.6, 0.7, 0.8, 1.0, 1.2, 1.5, 2.0, 2. 5, 3.0, 4.0 1 - 1 2 1.0, 1.2, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 7.0 ...

Model I FC95 Tap 1.0 1.2 1.5 2.0 2.5 3.0 4.0 5.0 6.0 7.0 8.0 1 0.0 1 2.0 Cont i nuous Current 2.0 2.3 2.7 3.3 3.9 4.5 5.5 6.6 7.5 8.4 9.3 1 0.9 1 2. 5 HIGH-SEISMIC INSTANTANEOUS UN IT The i nsta nta neous coil is tapped for operat ion on either one of two ra nges (H or L). Select ion of the high or low ...

Ratings for the target and seal-in u n it are show n in Table V I I. TABLE V I I Tap RATINGS PARAMETER 0.2 2 DC Resistance, oh ms ( + 10%) 8.0 0.24 Min. Operating Current, amperes ( + 0 -60%) 0.3 2.0 Carry Continuous Current, amperes 0.3 3 Carry 30 Amperes for (seconds) 0.3 4 Carry 10 Amperes for (seconds) 0. ...

Min. Burdens at Minimum Burdens in Ohms Model Hz Range Tap Pickup, Minimum Tap (Z) Times Pickup Amps (Ohms) R Jx z 3 10 20 O.S - 4.0 O.S 6.30 24.20 2S.OO 21.30 9.96 6.13 60 1.0 - 12.0 1.0 1.49 6.09 6.27 S.44 2.SS 1.09 IFC9S O.S - 4.0 O.S S.2S 20.17 20.83 17.7S 8.30 S.11 so 1.0 - 12.0 1.0 1.24 S.08 S.23 4.S3 2.13 0.91 The H igh-Seismic ...

lead i n position C and the other in p osition L. Operating-T ime Accu racy The I FC relays should operate at the times shown i n the publ ish ed time cu rve w ithi n ± 7% or plus or m i nu s the time-dial setting times 0.01 0 second ( ± Setting ...

made to mak e su re that n o damage has been sustained i n shipment and that the relay cal ib rations have not b een d istu rb ed. If the ex ami natio n o r test i nd i cates that readjustment is necessary, refer to the section on SE RV ICING ...