I UNION SWITCH & SIGNAL l[fill 65 Russell Street Batesburg, SC 29006 Service Manual 57-L PV-250 Line Relay 115 Volts, 60 Cycles N322555-008) Installation, Operation and Maintenance March, 1985 A-3/85-2293-50-1 1985, Union Switch & Signal Inc. Printed in U.S.A. An Ansaldo Signal Company
~ UNION SWITCH & SIGNAL,...- \ PV-250 LINE RELAY - 115 VOLTS, 60 CYCLES N322555-008 6F-B) This relay is similar to the PV-250 track relays except as follows: 1. It has a high impedance control winding designed to operate with a 2000 ohm resistor in series. 2. The initial pressure of the front and back contact springs is to be 12 + 2 grams 6 grams each tip) instead of 20 grams 1 O grams each tip). 3. When the vane is just touching the lower roller stop, the front contacts should have 0.050" opening instead of 0.055" opening. In testing thi~.relay, a 2000 ohm resistor.:!:. 2% should be connected in series with the control element and the control and local connected together as shown in Figure 1. The relay should then be tested as a single element relay per Figure 1 below. This pick-up should be within plus or minus 5% of the value given and the full stroke within plus or minus 5%. The current operating values need only agree approximately with the value given in the Table I. Cl,..-... - ~ T+ Cl+ 2000 ± %.n. -C2 llsv 60"' L+ L- Figure 1. Rear View of Mounting Base Table I. Test Operating Values Frequency Hz Pick-Up Full Stroke Normal Volts Amp Volts Amp Volts Amp Min. Drop-Away % Of Pick-Up \. 60 50 78 0.137 92 o. 159 115 0.195 76 o. 153 90 0.182 110 0.220 80 80 * Note: Calibration using voltage values, current values for reference only. 57-L, p. 2
UNION SWITCH & SIGNAL m,- ' PARTS LIST FOR PV-250 LINE RELAY With Part Number N322555-008) See Figure A-1) ITEM 1 2 3 5 6 7 8 9 I 10 I 11 I 12 13 1 15 16 17 17A l 18 I 1~! 21 I 22! ~~! 25 26 27 28 29 30 31 32 1 33 3 35 I 36! 37 ; 38 I I 39 0 I 1! 2 3 DESCRIPTION Frame, Relay Latch Rod Knurled Knob, Th. Nut Nut Latch, Machined Pin, S. Stl. Rl. Spring Pin Roll Elas. Stp. Nt. Screw, 8-32 x 7/16 Bottom Cover Screw, #8-32 x 7/16 Fil. Stl. T.P. Gasket,' Rubber Screw, #8-32 x 1/ Rd. Stl. T. Pl. Handle, Standard Washer, #10 Int. Tooth Ph. Bz. N. Pl., Shprf. Screw, #10-32 x 3/8" Pan. Hd. Calibration Tag Adhesive Film Wire Seal, 2 Ply. 12 LD SL Ctd. Seal, Lead Name Plate Screw, 11-0 x 3/16" Rd. Stl. F) TP Support, Bracket Screw, 1110-32 x 1/2" Fl. Stl. TP Field Control Field Local Vane Assembly Screw, Trunnion Bushing Bushing Roller Bracket, Upper Roller Bracket, Lower Roller Plate Clip Lock Bracket Rivet, #11 x 5/16" Rd. Ph. Bz. Pin Washer, Tension T.P., 012 x 9/32" O.D. Pin Pin Pin Terminal Block Screw, 18-32 x 7/16 Rd. St. Pin, Indexing, Elas. Stop. Nt. Parts Bag PART NUMBER M37606 M375913 J770536 M39596 M321728 J08716 M321861 J87087 J52202-001 J77630-0001 J52202 J07081 J052639 M561111 J07710 J525277 5002036 J791665 A03013 J079351 M37859 J52502 M375890 J052091 N25151 N25109 N380678 N12889 M23293 M28359 M069693 M39783 M161753 M090506 M10907 J09812 M381128 J0771 M381129 M232031 M232935 M38680 J525106 J87090 N39711-5508 57-L, P 3
tij UNION SWITCH & SIGNAL ITEM DESCRIPTION PART NUMBER 5 6 7 P 9 50 51 Contact Block See Note "A" Contact Block See Note "A" Screw, #8-32 x 7/8" Rd. Hd. Stl. TP 0"lerating Arm Counterweight Counterweight Locknut Top Cover Screw, #6-32 x 1/" Fil. Hd. Washer Arc. Spr. Std. Term. Pre. Insul. Dia. G N3769-0001 N37650-0001 J052603 N39032 M51175-0303 M08397 N3856 J05285 J07713 J7-30077 NOTE A When reordering contact blocks be sure to include the "-0001" suffix with the part number. This assures proper processing of the contacts for optimum performance in these relays. 57-L, p.
1---.,.--...,\.!.,... so/2," -------'- 38 27 GENERAL ASSEMBLY DWG. FOR RELAY ::2 PV-250 ij PIECE NUMBER D N322555-008 ir... '1:1 ~ rn 0!:a D It ' ~ C i c:.: 15 37 1 2..,.. -- = <=>...,""' ~ At,t t t t 6 t It t' t Vtt t f I ft.~ i f I t ~~\i.. = 1 '.,,;;.t, I ~ -~~ /~2 3 \Jl ""'" ~ f r.. 'O. \Jl.::::::- I j==1 Pirlt I = c::; } """ = = t La>...,..,, "'t-,::,,,. =t.,.,. =. c=, :::::::» <:II= i:::a,1:.: : 8 c:::, c:1 L,,"":1 : c::::, c:: = / / \ '33 37 6 7 f..,. 8. -3 9 10 1I 37 i ~ 29 I ~ :c lilt en a z r- > Gl
OJ UNION SWITCH & SIGNAL ITEM 1 2 3 5 6 7 8 9 PARTS LIST FOR VANE N380678) See Figure A-2) DESCRIPTION Vane Crank Vane Buffer Clips Rivets, 119 x 5/16 Rd. Hd. Ph. Bz. Washer Rivets, #11 x 5/16 Rd. Hd. Ph. Bz. L.H. Crank Operating Arm R.H. Crank Operating Arm Rivet, 11 x 13/16", Rd. Hd. Ph. Bz. PART NUMBER N380677 M23173 M130658 J0980 M091997 J09812 M381118 M381119 J09819 :.. '., 3 7 9 8 9 2 _. 57-L, p. 6 Figure A-2. Vane Assembly
UNION SWITCH a SIGNAL b':j ITEM 1 2 3 5 6 PARTS LIST FOR MOUNTING BASE N3762) See Figure A-3) DESCRIPTION Mounting Base Complete - See Note "B" Mounting Base Only Tag Cont. Receptacle Solderless #10 to #12 Wire Cont. Receptacle Solderless #1 to 1116 Wire Cont. Receptacle Solderless #18 to 1120 Wire Meter Test Plug Insulated Test Plug For opening any coil or contact circuits and for removing receptacle springs) PART NUMBER N3762 N3762-009 J075828 J680181 J680165 J680179 M322965 J077931. Bag Contains: NOTE B ~' When Mounting Base complete is ordered, a plastic bag -1/8" x 5-1/2" of parts is included in the inner carton with the mounting base and instruction prints 2) Tags ) 1-0 x 3/16" Rd. Hd. Screws ) 1/" steel plate washers *) 1/" - 20 x 1-1/" Rd. Hd. Stl. Screws *) Washers *) 1/" steel lockwashers *) 1/" - 20 Steel Hex Nuts and Req'd. Quantity) Contact receptacles solderless J680165 for D1 to 1116 wire. If other wire size is used, request the proper part number as shown in Item when ordering base complete. i.e., N3823 except using contact receptacles, solderless J680181.) Asterisk*) items are for attaching mounting base to the rack.! I I I l. 57-L, P 7
. 1-~} r..... n n ijil[l[jilil - @ n n,o II rr u n rr II,.; Il Il a n m luurrnurr.nrrrrnrrn co u ll UITUUIIIT a a rrrrnrrao.;:. c,:;",lt 111 -~..,_ z ::, 0 :E cb I 0 \. 0 Figure A-3. Old Style Mounting Base Assembly 57-L, P 8
UNION SWITCH a SIGNAL CD - -\ PARTS LIST FOR NEW L'1PROVED MOUNTING BASE N38689-003) See Figure A-) ITEM 1 2 3 5 6 7 8 9 DESCRIPTION Base Only Strike Nut Receptacle Contact Spring, Solderless, For #1 to 116 Wire Receptacle Contact Spring, Solderless, For 118 to 120 Wire Receptacle Contact Spring, Solderless, For #10 to 112 Wire Tag Screw, 1/-20 x 1-1/ Rd. Hd. Lock Washer, 1/ Stl. Plate.Washer, 1/ Stl. Nut, 1/-20, Hex. Stl. PART NUMBER J78005 J79288 J80280 J680195-0001 J680195 J680195-0002 J075951 J052667 J07775 J07501 J08002 NOTE B When Mounting Base complete is ordered, a bag of parts is included that contains: 2) Tags Item 5) *) Screws Item 6) *) Lock Washers Item 7) *) Plate Washers Item 8) *) Nuts Item 9) and Req'd. Quantity) - Receptacles contact springs J680195-0001) for 11 to 116 wire. If other wire size is needed, request the proper part number as shown in Item when ordering base complete. i.e., N38689-003 except using contact receptacle contact springs, solderless J680195-0002.) *) These items are for attaching mounting base to the rack. 57-E, P 9
-".-----, t1::; =!= [J ID [] [J ID [] ID ID IDID [l[jfd[jidio - i!)!!!!!;!... [][] [] fd ID ID D IIl - I... ; [] [) [] ID ID [] [J ID... l -1\1!!) IDO []IDID[][J[] I I :;;i::; [][l ID ID ID ID [J ld -! I! ~~ i L...J_ t ' ' }!1. ' i I I : i9,: '11. :rri i N c ---- -G ' Figure A-. Improved Mounting Base 57-L, p. 10
MAINTENANCE NOTICE PV-250 AC VANE RELAY Inspection for Loose Counterweights and Loose Trunnion Screw Locknuts This Maintenance Notice covers PV-250 ac Vane Relays manufactured from 198 to Sept. 1988, and with the following Part Numbers and applicable Service Manuals: RELAY PART NO. RELAY MANUAL N322555-001 SM-57A N322555-901 N322555-002 SM-578. N32555-003 N32555-803 SM-57C N32555-903 N322555-00 SM-570 N322555-005 SM-57E N322555-805 N32555-909 SM-57F N32555-809 N322555-010 SM-57G N322555-007 SM-57H N32555-811 SM-57J N322555-008 SM-57L N32555-812 SM-57M N32555-813 N32555-91 SM-57N How to find the date of manufacture? look at the serial number of the relay. In the serial number to be found on the nameplate of the relay, the first two digits stand for the week, and the next two digits stand for the year of manufacture of the relay. For example, serial number 585115 was made during the 5th week of 1985, and was the 11 Sth item of its particular part number. '----------------------------------------------------------------------------"""""""""""""""=::m October, 1988 51100 CORPORA TE DRIVE PITTSBURGH, PA 152'J7 COPYRIGHT 1988, UNION SWITCH & SIGNAL INC: PRINTED IN USA
WARNING THE FOLLOWING PROCEDURE INVOLVES THE OPENING OF A VITAL RELAY. THIS PROCEDURE MUST BE PERFORMED BY INDIVIDUALS QUALIFIED TO WORK ON VITAL RELA VS. IF THE FOLLOWING INSPECTION IS TO BE DONE IN THE FIELD, BE CERTAIN TO OBSERVE All RULES REGARDING THE SAFE MOVEMENT OF TRAINS BEFORE REMOVING THE RELAY FROM SERVICE. Instructions for inspecting for loose counterweights and loose trunnion screw lockouts: 1. Remove the bottom cover from the relay. This exposes the contact assembly. Exercise extreme caution not to disturb the adjustment of the contacts. Remove nameplate to gain access to the counterweight assembly on the vane crank. 2. Carefully rotate the vane so that the counterweight assembly is visible. This will reveal one or more counterweights, with or without a locknut, on the counterweight screw. 3. As shown in the figure below, check to determine if a) the counterweight and locknut are tight, b) at least two threads are visible on the counterweight screw end, and c) the split screw end is slightly spread apart. Tighten any loose counterweights and locknut.. Perform a visual inspection of the relay. Check for rubbing vane, debris inside the relay, and for obviously misaligned contacts. Check to see that the vane is approximately centered and that it has the,.correct amount of end play 0.010 to 0.016 inch). Readjust if required. Check the vane for freedom of movement. Check to see that the operating arms, clips and bushings are in their proper position and are free to move. Using a wrench, check the trunnion locknuts for tightness. Tighten any that are loose. S. Perform an electrical calibration test in accordance with the applicable service manual. If the relay passes the field limit requirements outlined in the service manual, apply glyptal to the exposed threads of the counterweight screw and the trunnion _locknut, as shown in the figure below. The relay can then be sealed and placed in service. 6. If the counterweight screw end cannot be spread, or if any of the checks or calibration tests do not pass, send the relay to US&S Service & Repair in Augusta, Georgia for free-of-charge service. REMOVE NAMEPLATE ~ TWO THREADS EXPOSED MIN.) APPLY GLYPTAL,...;;::..., MAKE SURE SPLIT COUNTERWEIGHTS WITHOUT LOCKNUT. COUNTERWEIGHTS TIGHT AGAINST EACH OTHER STUD IS SPREAD SLIGHTLY APART MAKE SURE TRUNNION LOCKNUT IS TIGHT MAKE SURE TRUNNION LOCKNUT IS TIGHT TWO THREADS EXPOSED MIN.) APPLY GL YPT AL 0 BOTTOM VIEW COVER REMOVED) DO NOT DISTURB CONTACTS DURING SERVICING 0 COUNTERWEIGHTS WITH LOCKNUT