INSTRUCTIONS GE I VOLTAGE RELAY. TYPE IAV69A and IAV69B GENERAL ELECTRIC

Transcription

1 GENERAL ELECTRIC TYPE IAV69A and IAV69B VOLTAGE RELAY INSTRUCTIONS GE I

2 2 JEWEL SHAFT DISK AND MAGT 1AV69A Withdrawn From Case. GEI90810 Voltage Relay Type IAV69A And B Fig. 1 ( ) Front View of Belay Type DRAG 4 CARRIER 0 UERVOLTAGE TARGET SEAL IN TOP PIVOT II OVERVOLTAGE I. VOLTAGE CONTACT ASM VOLTAGE CONTACT ASM SIAT)ONARY OVER TAP 8LOCI TARGET AND STATIONARY UNDER TIME DIAL ci Lf TAP PLUG LOWER SCREW GNFRAL EUCTRIC VOLYACI.(t.T SPRING IAV69A Withdrawn From Case. Fig. LA ( ) Back View of Relay Type MALN & SEALIM MOVING CONTACT MAGNET COIL AIO ADJUSTING

3 3 the purchaser s puiposes, the matter should be referred to the General flectric Company. RATING furthe, information be de,red or should particular problenm arise which are not covered sufficiently for every poo.ible contingencq to be met in connection wit!, installation, operation or maintenance. Should Those instructions do not purport to cover all details or variations in equipment nor to provide for Table A. rated voltage. application. permits the connection plugs to be removed or protection against an abnormal voltage condition is volts DC. DESCRIPTION The 1AV69 relay is a time delay undervoltage and overvoltage relay designed to be used wherever volts DC and 0.15 noninductive amperes at 250 carry and interrupt 0.3 noninductive amps at 12 the contacts of the 1AV69 relay will continuousi When not limited by the target and sealin unit, TYPE IAV69A & B VOLTAGE RELAY hilt no such assurince is qj cr0 with ii spect to locai codes and ordinances because they var1 greatly. To the extent required the products described herein meet appicab1e ANSI, reef and NE!4 standards; target and sealrn unit where used as indicated in dropout values both contacts are open. carrying rating of the contacts Is limited by the When operating coll voltage is between pickup and 30 amperes at 250 volts or below. The current Is shown in FIg. 7. The 1AV69 relays covered by these instructions The current closing rating of the contacts Is of the undervoltage adjustment. The normally closed 60 to 90% of tap voltage by varying the dial setting. continuously on any tap and tap voltage on taps above of rated voltage. The coil will stand rated voltage be adjusted to operate between 45 and 115 percent 50 or 60 cycles. The relay pickup and dropout can are available with 120 and 240 volt operating coils undervoltage conditions. A typical wiring diagram APPLICATION quired to protect a circuit is determined by the These relays are used for protection and/or control of ac circuits In response to over and mines the relay pick up. The disk s motion Is disk is fastened to a shaft to which the contacts dial settings. The overvoltage contact is calibrated undervoltage contact can be adjusted to close from an aluminum disk which rotates between the pole the normally closed voltage stationary contact is delay is made by rotating the time dial upon which mounted. Fig. 4A shows the percent of tap value to to close at tap value and Its adjustment is independent faces of an electromagnet usually called a Umagnet. close the undervoltage contact at the different time restrained by a spiral spring whose setting deter restrained by a permanent magnet drag magnet whose istics are shown in Fig. 4. Adjustment of the time Its contacts and the timevoltage relay character changing the distance the disk must travel to close are connected. The time delay is adjusted by restraint is proportional to the disk speed. The portional to the connected voltage. The disk is The operating coil produces the Umagnet s flux which tends to rotate the disk with a force pro The induction disk operating unit consists of single control spring. The number of relays re cuits. The normally open and normally closed contacts have a common point due to the use of a Operating Principles before the contacts are connected into their cir CHARACTERISTICS inserted with the operating coil always energized erating coil is connected to both blocks. This between the upper and lower blocks while the op The 1AV69 relay components are housed in an S2 double ended case with each contact connected Carry 30 Amps For 4 Secs. Carry 10 Amps For 30 Secs. 0.2 Secs. none; otherwise these two models are identical. Carry Continuously 3.0 Amps 0.30 Amps as indicated in Fig. 2, while the IAV69B relay has Minimum Operating 2.0 Amps 0.2 Amps IAV69A relay has two target and sealin devices, easy adjustment of the operating time or the undervoltage setting which are interdependent. The DC Resistance 0.13 Ohms 7 Ohms voltage setting. A time dial is provided to permit 2 AMP TAP 0.2 AMP TAP undervoltage adjustment is independent of the over decreased to another predetermined value. The TARGET AND SEALIN UNIT value and its right hand contacts when the voltages operating element which closes its left hand con required. The relay consists of an induction disk tacts when the voltage increases to a predetermined TABLE A

4 4 CONSTRUCTION AMP. AMP. VOLT VOLT essentially the same for the 240 volt relay. and frequency Is given In Table B. Burdens are Burden Ty: TAV Z ( oit Vcw :u5a7i) Int.crna. Corinectton or GEI90810 Voltage Relay Type IAV69A AND B TABLE B completes the electrical connections between the mechanism and an interlock arm which prevents inches thick and appropriate hardware is available. Every circuit In the drawout case has an auxi overlap when the connecting plug is withdrawn or These relays, when not included as part of a However, panel thickness must be indicated on the plugs have been inseryed. The relay case is suitable for either semiflush or surface mounting on all panels up to 2 included. makes contact as indicated in Fig. 5 with adequate tained in transit. U injury or damage resulting Sales Office. to protect them against damage. Immediately upon ly notify the nearest General Electric Apparatus liary brush as shown in Fig. 5 to provide adequate case block and the cradle block. To test the relay Inserted. It is important that the auxiliary brush at once with the transportation company and prompt control panel, will be shipped in cartons designed from rough handling is evident, file a damage claim relay order to insure that proper hardware will be receipt of a relay, examine it for any damage sus the front of the relay case, contains the target reset in its case this connection blnck can be replaced by a test plug. The cover, which is attached to 2clav Typi J\vY9 (Fror;: v w) the cover from being replaced until the connection RECEIVING, HANDLING AND STORAGE F.i. (1(5A 75 i Int&rnal Cor,riocton For pressure. = SHORT FINGER Si T Si po Si ii 11 i5 disconnected by removing the connection plug which he relay is in operation but it can be easily re assembly which is latched into a drawout case when The relay components are mounted in a cradle moved wjien desired. To do this, the relay is first in Fig. 8. in a S2 case whose outline and drilling plan is shown The components of the LAV69 relay are mounted L RATING WATTS WATTS TAP 1 60 CYCLE 50 CYCLE by a 120 volt 1AV69 relay operating at rated voltage The burden imposed on a potential transformer = SHORT FINGER

5 .: I FFDUCED 80% 70%I Voltage Relay Type I.AV69A Arid B GEI90810 L:: ]J. ttl PGriI ND[R IOLTAGE C)NTCT CLO5JRE IN TA VALE i H 14 4j14E ifltj jjfn44 t: i i t9: I F 1 TILE TC GUT UNDECVaTAGE CONi/lTS AHIN VOLTAGE IS SbUDLNLY JL EPOM RATED VOLES TO INDICA1ED PFCFNT OF TAP VALUE ltri 1 r jf1 t 1= r t UL ijf ; j$ TIME VOLTAGE CURVE i.h MODEL 12IAV69EC )fl :ti Lt ;jftl., r v i yt. J :. :lij tjj IIJ TIME TO CLOSE LEFT OVERVOLTAGE CONrACTS AHEN VOLTAGE IS SUDDENLY j iti_t.11±yl t1 INCREASED FROM ZEPO TO INDICATED 4i:L1 pe tnifff tl1 II 1 Ff fwe titti PERCENT OF TAP VALJE.. I ii l I tff!j1i 11th I hjl 60% 1 RI GIlT UNDER VOLTAGE COIITACT :i,i,1, 1ft4114 L44I. LEFT CLOSURE IN tt, i144w LIjfli CONTA(TF O% % OF + IIw r fltl CLOSED fl 95% TAP VALUE fl III C t 80 ioo 12 1 lt,o I I I ti.. ::t :.i PEPCNT DI TAP VALUE 1I L t.1 1Tf1zi + I JJ :.. i1ij :L M65A75(62) Tm Voitage (ha tiltics ii; 14y ti Fl For Relay Type 1AV69 IIIiii *1E1114j tie9 14th 4HWfl 1Li F1i1I14 tffh 4H T r 1tI41 ji W4Z11 t Hl tw44 VV ij. II Ii 2E *5M F. TIME DIAL CTTING h hiitr A (165A7Ll) Percent GI ra VJue To Cioce Riht Hand Contact vs Time c lay Type ThftV69B Dial Scttin 5

6 6 stalled immediately, they should be stored in their ture, dust and metallic chips. Foreign matter disturbed. ment and that the relay calibrations have not been insure that no damage has been sustained in ship ACCEPTANCE TEST way inside when the cover is removed and cause packing the relay. If the relays are not to be in trouble in the operation of the relay. Reasonable care should be exercised in un original cartons in a place that is free from mois collected on the outside of the case may find its Immediately upon receipt of the relay, an drive magnet or the drag magnet. operating coil. ing shell. There must not be any metallic particles and that all screws are tight. The drag magnet INSTALLATION PROCEDURE Electrical Tests Visual Inspection inspection and acceptance test should be made to or other foreign matter in the air gap of either the Mechanical Tests GEI90810 Voltage Relay Type IAV89A And B the relay received agree with the requisition. molded parts or other signs of physical damage, should be fastened securely in position on its mount the pickup and dropout times agree approximately a periodic test program be followed. It is recognized upon environment, type of relay, and the user s good condition. PERIODIC CHECKS AND ROUTINE TESTS. out of adjustment then proceed as follows: 2. Repeat the electrical tests described under the source of power as shown in Fig. and check that interval best suited to his individual requirements at an interval of from one to two years. experience with periodic testing. Until the user has accumulated enough experience to select the test it is suggested that the following points be checked In view of the vital role of protective relays in on SERVICING. If adjustments are necessary, check the section relay operates with one test plug removed. rating used. When testing an IAV69A relay connect a DC with times given in Fig. 4 for the settings used. made by control spring adjustment if desired by Relay pickup settings between tap voltages can be CONNEC1IrIG LUG MAIN BRUSH CONNECTING BLOCK the relay to pick up at the desired voltage. Set the Connect the reiay as shown in Fig. 6 and set dropout voltage at the desired value and check that for 15 minutes with rated voltage connected to the The relay should be mounted in its final loca tion if possible and should be allowed to warm up Electrical Tests ANCE TESTS be repeated before installation. recommended that the visual and mechanical in spection described under the section on ACCEPT In storage before shipment to the job site, it is If after the acceptance tests the relay is held frequency to studs 5 and 6 or 15 and 16, and check that the relay picks up at tap value ±5% on at least two taps. Connect a variable source of power at rated they operate without binding. 3. Operate the target sealin units and check that touching the drag magnet or Umagnet. check that disk rotates without binding or 2. Rotate the time dial to the No. 7 setting and contacts have approximately 1/32 inch wipe. 1. Manually operate the relay and check that both visual Inspection that there are no broken or cracked Remove the relay from its case and check by the model number, rating and calibration range of Check the nameplate stamping to insure that If it is found that the relay calibrations are SERVICING 3. Check that the contacts are untarnished and in section on INSTALLATION PROCEDURE. described under section on ACCEPTANCE 1. Repeat the visual and mechanical inspection that the interval between periodic checks will vary the operation of a power system it is important that MAINTENANCE the target sealin units operate at or below the tap moving the spring adjusting ring. Check that the ShowinC Post[on Of Aux] iary Brush And Shor LnC Bar F ig. 5 (f3o25o3) Cross L3ection 0! j)rawout Cas AUXILIARY BR SH T[RMIN1. SLOCK\ SHORTING 8AR ROTE AFTER ENGAG NG AUXILIARY BRUSH CONNECTING PLUG IRAVEL.S / INCH BEFORE ENGAGING THE MAIN BRUSH ON TERMINAL FHE SLOCK

7 in towards the back of the case to decrease the volt relay or 186 volt tap for the 240 volt relay. moving the drag magnet on its mounting shell 2. The relay operating time can be adjusted by Rotate the control spring adjuster until correct pick up is obtained. relay picks up at tap voltage ±5 percent. burnishing tool should be used. This consists corroded material quickly without scratching resembling a superfine file which removes of an etched roughened strip of flexible metal 4. For cleaning fine silver contacts a flexible Set the time dial at zero and check that the up will be increased. 1. Set the tap plug in the 93 volt tap for the 120 Voltage Relay Type IAV69A And B GEI90810 Relay Type 1AV69 ig. 6 (o165a67l 1O) Field Test Connections For J I2 4 B 1 TEST UPPER VAR! ABLE D.C. SOURCE RATED P FREQIJENCY NOTE: USE 14SE CORN. BlUR TESTING 0V69A RELAY ONLY TEST PLUG LONER PL the other tap, and place it in the lefthand vent the righthand stationary contact from lefthand stationary contact and place It In connecting plug. Then, take a screw from the contact. This procedure is necessary to pre getting out of adjustment. Screws should not To change the tap setting, first remove the The tap plug is the screw holding the righthand stationary contact of the sealtn unit. the desired tap. Next remove the screw from as follows: 3. To change target sealin tap settings, proceed is out of adjustment by a considerable amount, check for friction causes such as particles in the air gaps or cracked jewel bearings. 1/ 8 from the edge of the disk. If relay time of the drag magnet must always be at least time and out to Increase it. The outer edge Diagram For Relay Type 1AV69 Fig. 7 (0165A76392) Typical External Connections A C BUS OR LINE 11 CLOSES ON OVERVOLTAGE CLOSES ON C? UNOERVOLTAO BELAYS I OR INDICATING I DEVICE ao is 16 C7S unoer AND OVERVOLTAGE RELAY TYPE AD TO give the General Electric requisition number on. which the relay was furnished. and give complete nameplate data. If possible, specify quantity required, name of the part wanted, nearest Sales Office of the General Electric Company, When ordering renewal parts, address the damaged. prompt replacement of any that are worn, broken or of renewal parts be carried in stock to enable the It is recommended that sufficient quantities RENEWAL PARTS cloth to clean fine silver contacts. A burnishing Never use knives, files, abrasive paper or the surface. The flexibility of the tool insures the cleaning of the actual points of contact. tool as described above can be obtained from the factory. dc will be the higher tap value and ac pick be in both taps at the same time as pickup for

8 MM 168MM 76MM GLASS PANEL DRILLING FRONT VIEW FOR SURFACE MOUNTING 19MM 144MM 5 562i 5. (TYPICAL) 4 HOLES 6MM 5MM 12MM MM 142MM C U Tb UT L 15MM 71MM 27MM MM 29MM BACK VIEW MM NUMBERING STUD FOR SURFACE MT6. (2) 5/16 18 STURS GEI90810 Voltage Relay Type IAVO9A And B DRILLED HOLES CUTOUTS MAY REPLACE _ (ST9193) (11DO) GENERAL ELECTRIC METER AND CONTROL BUSINESS DEPT., t4alvern, PA * Indicates revision Fig. 8 (1( ) OutlIne and Panel Drilling for Relay Type!AV69A nd IRV69B INCHES TYPICAL DIM: FRONT VIEW FOR SEMIFLUSH MOUNTING PANEL DRILLING 1/4 DRILL 687 VIEW HOWING ASSEMBLY OF HARDWARE FOR SURFACE MTG. [IN STEEL PANELS 5/16 18 STUD 10,000 2 HOLES 5/8 DRiLL te.i87 3.Oj M 76MMI,/5 I MiG. SCREWS KI (4) X 3/8 I 3, SEMIFLUSH SURFACE PANEL LOCATION