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| FUNCTION |SENSING | THRESHOLD |TIME DELAY |TRIPS| REMARKS |INHIBITION| |-----------|--------|-----------|-----------|-----|---------------|----------| |-----------|--------|-----------|-----------|-----|---------------|----------| | Disconnect| Discon-| Manual | None | GLC | Turns off vol-| | | (D) (IDG) | nect | action | | GCR | tage regula-| | | | signal | | | | tor, turns on | | | | from | | | | warning light | | | | cockpit| | | | | | |-----------|--------|-----------|-----------|-----|---------------|----------| | Fire (F) | Fire | Manual | None | GLC | Turns off vol-| | | (IDG) | signal | action | | GCR | tage regulator| | | | cockpit| | | | | | |-----------|--------|-----------|-----------|-----|---------------|----------| | Differen- | Diffe- | 45 A | 37.5 ms | GLC | Open BTC, GLC.| | | tial Pro- | rential| + or -| + or -| GCR | If DP is in | | | tection | current| 5 A | 2.5 ms | BTC | zone 1, then | | | (DP) | of each| | | | remove inter- | | | | phase | | | | lock from BTC | | | | from | | | | in 120+10 ms. | | | (IDG and |the CT's| | | | If DP zone 2, | | | APU GEN) | sensing| | | | lockout GLC | | | | | | | | and BTC | | |-----------|--------|-----------|-----------|-----|---------------|----------| | Shorted | Three | Ripple | 2 s | GLC | Turns off vol-| | | Permanent | phases | of PMG -| + or -| GCR | tage regulator| | | Magnet | voltage| rectified | 0.5 s | | | | | Generator | PMG | output | | | | | | (S PMG) | | | | | | | | (IDG and | | | | | | | | APU GEN) | | | | | | | |-----------|--------|-----------|-----------|-----|---------------|----------| | Open Cable| Diffe- | I > 80 A | 3 ms | GLC | Turns off | | | (OC) | rential| + or -| + or -| GCR | voltage | | | (IDG) | current| 0.8 A | 0.3 ms | | regulator. | | | | from | | | | 28 VDC is pro-| | | | 6 hole | | | | vided by TDC | | | | CTA | | | | AC SENSOR to | | | | | | | | fire trip GCU | | | | | | | | input | | |-----------|--------|-----------|-----------|-----|---------------|----------| | GLC fai-| Indivi-| GLC status| 250 ms |LOCKS| | | | -lure (IDG| -dual | ON and I | + or -| OUT | | | | and APU | CTA | I > or = | 50 ms | BTC | | | | GEN) | current| 25 A | | | | | | | GLC | + or - 5 A| | | | | | | status | with PRR | | | | |
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| FUNCTION |SENSING | THRESHOLD |TIME DELAY |TRIPS| REMARKS |INHIBITION| |-----------|--------|-----------|-----------|-----|---------------|----------| | | | OFF | | | | | |-----------|--------|-----------|-----------|-----|---------------|----------| | APU ready | Signal | Absence of| None | GLC | Generator | | | (APU GEN) | from | signal | | | excitation | | | | elec-| | | | is cut off | | | | tronic | | | | through signal| | | | control| | | | at frequency | | | | unit of| | | | below 325 Hz. | | | | APU | | | |.Oil over temp | | | | | | | | 185 deg. C | | | | | | | | + or - 5 deg.C| | | | | | | |.Speed 95 per- | | | | | | | | cent Nn signal| | | | | | | | from ECB | | |-----------|--------|-----------|-----------|-----|---------------|----------| | Oil Over | Oil out| 185 plus | None | | IDG fault | | |Temperature| tempe- | or minus | | | indication | | | (OOT) | rature | 5 deg.C | | | | | | (IDG) | bulb | | | | | | |-----------|--------|-----------|-----------|-----|---------------|----------| | Open Cir- |4 cables| >9 A | 37.5 ms | GCR | If either CT, | | | cuit (OCT)|from ge-| average | + or -| GLC | except 6 h CT,| | | |nerator | current | 5 ms | BTC | opens while | | | |CT and 4| | | | loaded reclose| | | |cables | | | | BTC and if | | | |from | | | | line CT opens | | | |line CT | | | | before closing| | | (IDG and | | | | | into load, | | | APU GEN) | | | | | lockout BTC | | | | | | | | open | | |-----------|--------|-----------|-----------|-----|---------------|----------| | Rotor dio-| Current| Function | 3 s | GCR | Turns off vol-| | | de short | and | of DC ex- | + or -| and | tage regulator| | | circuit | voltage| citer vol-| 0.5 s | PR | | | | sensing | exciter| tage Vs | | | | | | | field | Generator | | | | | | (IDG and | | load | | | | | | APU GEN) | | current | | | | | |-----------|--------|-----------|-----------|-----|---------------|----------| | | | | | | | | | Generator |.Closed | | |.GCR |.GLC will close| | | control | | | |close| when voltage | | | switch | | | | | frequency and | | | | | | | | phase sequence| |
R 1EFF : 001-049, 051-099, 101-149, 151-199, 1 24-22-00Page 30 1201-299, 301-399, 1Aug 01/05 1 1 1CES 1

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| FUNCTION |SENSING | THRESHOLD |TIME DELAY |TRIPS| REMARKS |INHIBITION|
 |-----------|--------|-----------|-----------|-----|---------------|----------|
　
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