GE SFF201A Instructions Manual Download Page 1 | Manualshive

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Summary of Contents for SFF201A

Page 1: ...GEK 90636D INSTRUCTIONS Static Frequency Relays SFF2O1A B SFF2O2A B SFF2O4A B ...

Page 2: ...2 Over Frequency Test With Variable Frequency Generator 12 Over Frequency Test With Single or Line Frequency 13 Under Frequency Relay Tests 14 Under Frequency Test With Variable Frequency Generator 14 Under Frequency Test With Single or Line Frequency 14 Rate of Change for Multiple Setpoint Models Only 15 Rate of Change Test for Variable Frequency Generators 15 Rate of Change Test for Single or Li...

Page 3: ...t to occur is 3 cycles In addition an adjustable timer is provided for each frequency setpoint wherein a delay can be added to the output When used in the under frequency or over frequency mode this time is used to delay the output whereas it is used to prolong the output when the function is used in the restore mode Timer ranges are shown below Mpdel Timer Ranae SteDs Sfl20 A 0 to 1 55 seconds 05...

Page 4: ... loss of generation Sufficient load must be disconnected to enable the remainder of the system to recover to normal or near normal frequency In this way restoration of the entire system will be facilitated An overall load conservation scheme can be arranged to trip off selected load in different ways a Disconnect blocks of load in several steps with each step occurring at a successively lower freq...

Page 5: ...rvoltage cutoff function The SFF relay may also be used in an industrial installation that is tapped off of a power company transmission circuit that utilizes high speed automatic reclosing For faults on the line both ends of the line will be tripped This will be followed by a high speed reclose It is important for the industrial load to be disconnected prior to the reclosure to prevent damage to ...

Page 6: ...s across the system and thereby minimizes the possibility of initiating a new disturbance Since the restoration timers will be set for long time delays it is essential that they do not reset as a result of transient system frequency oscillations that may momentarily reset the restore output function For this reason the restore function is provided with an adjustable time delay reset before the con...

Page 7: ...d steps SFF2O B Setpoint 1 to 255 milliseconds in 1 millisecond steps Setpoint 0 lto 25 5 seconds in 0 1 second steps Repeatability 3 Undervoltage Setpoint 35 to 95 in 5 steps based on l2OVrms nominal Setpoint Accuracy 5 Repeatability 3 of setting from 35 to 90 Rate of change multi setpoint models only Frequency 1 to frequency 2 IN or OUT Frequency 2 to frequency 3 IN or OUT Frequency 3 to frequen...

Page 8: ...equency of each setpoint to be set Note if a setting is made outside of the stated range that frequency setpoint will be prevented from operating Function A three position slide switch permits the choice of under over or restore modes of operation When the restore mode is chosen the timer is switched to dropout delay and the contact converter input is enabled Rate of Change Multi frequency models ...

Page 9: ...d 6 is stepped down to 6 9 VRMS filtered and converted to a square wave It is this square wave that is measured by the frequency element The frequency measuring circuit compares the period of the incoming square wave against a crystal reference If the source frequency differs from the setpoint for more than three consecutive periods or cycles the circuit gives an output If the under voltage superv...

Page 10: ...ement unclip the retaining wire and pull the relay out of the socket The input transformer is mounted on the bottom plate of the relay cradle RECEIVING HANDLING AND STORAGE This relay contains electronic components that could be damaged by electrostatic discharge currents if those currents flow through certain terminals of the components The main source of electrostatic discharge currents is the h...

Page 11: ...est Rated from 100Q 3KQ 25 Watts General Testing Considerations The relay can be tested with a variable voltage frequency generator or with the line frequency The acceptance test have taken into account both contingencies Each test has a section for line frequency testing and or for variable frequency generators When utilizing variable frequency voltage generators refer to the test equipment manuf...

Page 12: ... over out 1 5sec 35 F2 50 or 60hz over 1 5sec SFF2O4 Fl 50 or 60hz over out l 5sec 35 F2 50 or 60hz over out 1 Ssec F3 50 or 60hz over out 1 5sec F4 50 or 60hz over 1 5sec T The relay can be tested at other frequencies if desired To do so set the frequency and adjust the inputs based on that setting Over Frequency Test With Variable Frequency Generator 1 Apply the rated supply voltage between stud...

Page 13: ...e test target LEDs Fl to F4 light the TB test targets and the trip target LEDs Fl to F4 light after the 1 5 second time delay setting And the output relay contacts have tripped as indicated by the trip targets 3 Remove the input test frequency and note that the contacts and test LEDs have dropped out 4 Reset the targets 5 Remove the supply voltage 6 Set the undervoltage switch setting to 95 and re...

Page 14: ...Set the undervoltage switch setting to 100 and repeat the above test starting at step 1 With the undervoltage set at 100 there should be no trips or target LEDs during the under frequency The undervoltage cutoff will disable all outputs Under Frequency Test With Single or Line Frequency Before applying the line or single frequency source Set the setpoint s 0 5hz above the frequency input used This...

Page 15: ...quencies if desired To do so set the frequicy and adjust the inputs based on that setting It is essential that the trip targets are enabled by the lOOma of current through the normally open relay contacts for this test Rate of Change Test for Variable Frequency Generators 1 Apply rated supply voltage between stud 1 and stud 2 2 Set the frequency generator at 0 5hz above the setpoints For example s...

Page 16: ...o their time delay settings Note After 1 5 seconds all LEDs should be lit 3 Remove the input test frequency and note that the contacts and test target LEDs have dropped out 4 Reset the targets 5 Remove the supply voltage 6 Set the undervoltage switch setting to 100 and repeat the above test starting at step 1 With the undervoltage set at 100 there should be no trips or target LEDs during the under...

Page 17: ... Frequency 1 Before applying the line or single frequency source Set the frequency setpoints 0 5hz below the frequency used Apply rated supply voltage between stud 1 and stud 2 Connect a DC source rated at 48V to 250V between stud 10 and stud 20 Your power supply voltage will suffice if it is DC 2 Apply the test line frequency at li5vrms between stud 5 and stud 6 And note that the test targets F a...

Page 18: ...ge ON multi setpoint models select IN or OUT by a two position slide switch Time Delay Set the desired time by summing the setting of the toggles in the UP position Undervoltage Set the desired voltage by summing the toggles in the UP position TROUBLE SHOOTING CAUTION The power supply in this relay is not isolated from the incoming power The heat sinks are at the incoming potential Further the com...

Page 19: ... impedance instruments to avoid loading the circuits Remember the regulated DC is not isolated A logic low is a signal with an amplitude of between zero and 20 of the regulated DC voltage nominally this is 0 to 2 4 volts A logic high is defined as a signal whose amplitude is between 80 and 100 percent of the regulated DC voltage nominally this is 9 6 to 12 volts SKRVICING CAUTION REMOVE ALL power ...

Page 20: ...part number if known and the complete model number of the relay for which the part is required Table IX lists the part numbers for the most common replacement parts It is recommended that renewal parts only be obtained from the General Electric Company Should a printed circuit card become inoperative it is recommended that the card be replaced with a spare Since the last edition changes have been ...

Page 21: ...ency Fl F2 F3 201 202 Undervoltage 0184B8921G 1 204 201 Mother board 0184B8611G 1 202 Mother board 0184B89250 1 204 Mother board 0184B8925G 2 201 202 Output relay 0246A9826P 3 204 201 202 Target Reset Switch 0246A9920P101 204 201 202 Potential Transformer 0367A0265G79 204 201 202 I Lower Cradle Block J 0184B8624G1 204 201 202 Lower Case Block 06418058G643 204 201 Upper Cradle Block 0184B8624G2 202...

Page 22: ...cc cc 4 Cd a 1 tui C C a C a 0 0 0 0 0 U 0 0 0 J U W 0 C Cl Cl 0 0 C 5 I 0 LA ...

Page 23: ...C C 4 C c1 C 4 1 I ii H I I cC C C C t 0 o n c5 0 d B B as a C 0 0 5 I C I F ...

Page 24: ...It UI Li 1 GEK 90636 1 g 1 g h ri I U C C 1 I ci HH CU 0 C 0 U ceo Figure 3 0286A2810 1 Externa connection diagram for the SFF2O4 24 ...

Page 25: ...CD 3 3 01 01 i2OVAC CD C12 C C 8 9 C 36 to 28QVDC 5 Trip Target Fl 7 I r O 3 I I Power I _ L Power eupply alarm Normally operated 2 35 to 28OVDC or 42 to I32VAC ...

Page 26: ...CD cz 10 C 20 C 5 J C J c1 0 Fl 7 8 9 r O 3 4 pcwer ppIy a1ar NormLy operaed Dr 42 to i32VAC F2 12 11 ...

Page 27: ...GEK 90636 I 3 Power 4 Pcwer supp y aIrm Sup1y i NDrI afly oprat d 36 t or 42 t I32VAC Figure 6 153D7677 1 Block diagram for the SFF2O4 27 ...

Page 28: ...FACE MTG CUTOUT MAY REPLACE DRILLED HOLE PANEL DRILLING FLIP SEMI FLUSH MOUNTING FRONT VIEW PANEL DRILLING FOR SURFACE MOUNTING FRONT VIEW 76MM INCHES VIEW SHOWING ASSEMBLY OF HARDWARE MM FOR SURFACE MTG ON STEEL PANELS Figure 7 6209274 6j Outline and mounting dimensions for the SFF2O2 and SFF2O4 28 ...

Page 29: ...R SURFACE MTC K__S 10312 P61MM 191715 131 00000 00000 20 18 16 14 12 1 4 DRILL 1 125 29MM STUD NUMBER I NC 75 19MM 6 187 157MM 97531 00000 00000 10 8 6 4 2 BACK VIEW CUTOUTS MAY REPLASE DRILLE J HOLES 562 cuilUl I 5 8 DRIL 2 HOLES 1 5MM 10 000 254MM 218 5MM PANEL DRILLING FOR SEMI FLUSH MOUNTING FRONT VIEW CA 500 12MM TYPICAL 3 4 DRLL 20 HOLES 1 8MM TYPICAL DIM INCHES MM 5 16 18 PANEL DRILLING FOR...

Page 30: ...H K H H K 1I III 4 a C ft 3 4 I I C C 1 I ft a a I ft H r Li ft_ T L ri H CI D a I Ca I I CF Li F IF ra ft U F F zzu ft C J CI U_ F Li z Li UI d at a t 41_il adD 4 Li ft_i 1 ft J ft F 4 Li Ct LI C o I I_i F Liz C LI C ft Li 4 ft Lft H 4 F UJ a Li ft Z a a Li Li Li Li ft I_i_i H a C ft ri r L L F LiLi La Lift a_____________ ua WH I a L Li r O F I l a L_ _1 L J zi r J 1 I I z zz _ c3 IL F Z1 t Ift_i...

Page 31: ...I I CD C 0 CD C Cl I I CD Cl C CD C El zO CD 2 C a 0 C C 0 CD ...

Page 32: ...21 z i 33 34 35 6 37 33 39 40 4 142434 45464140495054 50 53145556 52 151960 64 12 2 0 4 5 5 0 0 9 clii 2 Ii 04 11 iS 07 10 1520 20 2 23 2 25 25 27 28 09 70 Ii 32 al a_a_a a_a_a_F a a a_s_j 3J iE Lj lr 017 V8 Lj Feset r 3 37 34 39j40 44 434304 49464744 4930 4 I 2 4 5 0 7 8 5 80 58 I 1 44 45 40 47 II IThE Ili I LI n Case Gnd Stud 0 7 a 0 ó 15 00 Cast HC T F 1 tp Figure 11 0183B4490 4 Internal connec...

Page 33: ...5 05 65 0969 09 19 90 99 00 6 09 9 09 00 60 00 96j56 96 0 T r El0C 0 00 00965000 6000 0 0 96 51 II II 91 II 1 26 II 01 6 6 6 c r ft gE o9 oo26c s1 9c9c r z lcoc6rg1orsr 1rrrr09 i ororqtttttlcertltt 7 z L 5 IS 0556 09160969 95 5 09 509 69 69 0 96 99 0 6 06 II 07 69 09 10 rolto t i L9t909L5t0mtt I U 1 I 1_I j ijs0 1 I 4 T SIT T H IIJ0I1 If 1dP loll PA11P1 10u nbl J 0 lI6flIt U I I 99O6 NID ...

Page 34: ...C C C C CONNECTiNG PLUG MAIN BRUSH CONNECTING BLOCK AUXILIARY BRUSH TERMINAL BLOCK SHORTING BAR C NOTE AFTER ENGAGING AUXILIARY BRUSH CONNECTING PLUG TRAVELS INCH BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK ...

Page 35: ...IGH ISEN p 17 7 I LT CT I S I EGVCLTA3 1 I GREATER THAN SETTING L_____ I 5 OV iS DECTECTO R I V f I Ii 2I V r I cONIN P1N iB I P1N43 1 r ArcALO BOARD POSITION C i TICCE GESTC E P1N57 LOLIC HIGH y EN PCI CT I DIGITAL BO IflO POSITION B SITCH ACTUATEG PIET I SET L El 7 30 TO 42 D AL 03 4 PCER SuPL IIjscH NORMALLY CPERATED L_ 04 LOC G i 20 LOGlu LCI COMMON ...

Page 36: ...R THAN SETTING RESTOREI I 2O V I I1P159E PATE OC2E ACTUATED PIN4S DIGITAL BOARD FOTTTICJ B POSITION PIN49 35 TO 250VDC 2O I PIN47 I IL1NOEPOLTAGF I rH IP4OOW 69VPIAS pECTECTOR j I 5 PIN7 PIN8I _J4f 1CVA ANALOG BOARD POSITION F L TARGET PESCI 0 0 P1NI PIN3 ALL ALL BDARJS SCAROS CO HON V 12V 10 I 0 H POWER 1 POwER SUPPLY ALARH 20 t SUPPLY tJ PH4LLY OPERATED 36 TO 280VDC OR 2 10 I32VAC Fl 7 B 9 I TRI...

Page 37: ...P15 01 01 Cl 10 1 1101111 10111 ION 0 1111 V ION P1114W 9 TUIIGET LOGIC HIGH WIILN 100MG GE TRIP CORPCNT FLOWG I P151 7 fl P11150 _t H LOGIC 111GM WHEN RESLT SWITCh ACTOAIEG P N401 EG1TAL1RMLLPGS1llONE fi I OCIC MCVII 1100 RH 200 El LOGIC LOW COMMON Figure 16 0153D7720 Trouble shooting diagram for the SFF2O4 111 111 21101100 I PIll 62 1 1 I IL ill liii ri 1111 101 1 7 I LH II II 11JLIIIEiI 0 II 95...

Page 38: ...GEK 90636 Figure 17 8043796 Front View of the SFF2O1A 38 ...

Page 39: ...GEK 90636 Figure 18 8043797 Front view of the SFF2O1A with the nameplate removed 39 ...

Page 40: ...GEK 90636 Figure 19 8043798 Front view of the SFF2O1A with the circuit boards removed 40 ...

Page 41: ... rrr octal scan r1l Figure 20 8043799 Front View of the SFF2O4A Rw ItflVOtTAOt colon PA TINGS V 0 4 1 0 120 VOLTS FREQ 40 79 HZ 0 RC 41 00 120 220 250 ROt IAOOEL 0FF204410 INSTRUCTION BOON G flOR3R METER ARC CONTROL MALVC PA 41 ...

Page 42: ...GEK 90636 Figure 21 8043800 Front view of the SFF2O4A with the nameplate removed r 42 ...

Page 43: ...GEK 90636 Li Figure 22 8043801 Front view of the SFF2O4A with the circuit boards removed 43 r 1 Al ...

Page 44: ...GEK 90636 Figure 23 8043802 Typical surge ground stud location http Ilwww GEmuItiIin com GE MULTILIN ...

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