GE IRT51E Instructions Manual Download

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Summary of Contents for IRT51E

Page 1: ...GEK 86038C INSTRUCTIONS TEMPERATURE RELAY TYPES IRT51E IRT51F IRT51G IRT51H GENERAL ELECTRIC Courtesy of NationalSwitchgear com ...

Page 2: ... T D C O N N E C T I O N S 11 11 13 INSPECTION ACCEPTANCE TESTS PERIODIC CHECKS AND ROUTINE MAINTENANCE 14 14 V I S U A L I N S P E C T I O N M E C H A N I C A L I N S P E C T I O N AND A D J U S T M E N T S C O N T A C T I N S P E C T I O N AND C L E A N I N G A U X I L I A R Y B R U S H E S R H E O S T A T C L E A N I N G E L E C T R I C A L T E S T S 15 16 16 16 16 CALIBRATION PROCEDURE 18 2 0 ...

Page 3: ...output contacts These contacts are provided by an auxiliary unit A operating from the main induction disk unit contacts in a pickup seal in knock down circuit as shown in Figure 8 The relay is self resetting when the detected temperature falls below a preselected level This reset temperature is continuously adjustable over a range from 5 C to 30 C below the set operating temperature A manual reset...

Page 4: ...ith associated RTD s placed in strategic locations in the tank These relays may also be applied to protect power Typical external connections for the type IRT51E relay are shown in Figure 10 Typical external connections for the type IRT51F relay are shown in Figure 11 The types IRT51G and IRT51H relays are intended primarily for bearing temperature protection of rotating equipment Typical external...

Page 5: ...a t u r e X X X X X X X X X X O p e r a t i n g C i r c u i t 120 240 VAC 50 60 Hz X X X X X X X X X X Auxi1i a r y C i r c u i t 120 240 VAC 50 60 Hz 125 250 VDC X X X X X X X X X X X X X X T a r g e t T a r g e t Seal i n 0 2 2 0 amp DC X X X X X X X X X X X X X Reset Features M a n u a l l y E l e c t r i c a l l y r e m o t e S e l f X X X X X X X X X X X X X X X X X X X X X Number o f C o n t...

Page 6: ...re rated at 110 220 VAC or DC See Table I The type IRT relays are suitable for operation on 50 hertz and 60 hertz power systems The type IRT relays are designed for use with the following specific type resistance temperature detectors 10 ohms at 25 C copper RTDs 100 ohms at 0 C planinum RTDs 120 ohm at 0 C nickel RTDs a b c Use only the specific RTD for which the particular model IRT was designed ...

Page 7: ...ed The IRT51F relay is shipped from the factory with the link in the HIGH position Some models of the IRT51F A relay are rated at 110 220 VAC or DC See Table I The target shows whenever an overtemperature condition is first sensed must be manually reset The target is not a seal in type I t The auxiliary telephone type relay contacts will close and carry 30 amps DC These momentarily for tripping du...

Page 8: ...e 4 RTD Assembly BURDENS Table 4 shows the burdens for the operating units of the type IRT relays based upon the type of RTD for which the unit is designed TABLE 4 OPERATING UNIT BURDENS RTD DESCRIPTION OHMS UC MATERIAL VOLTS FREQUENCY MILLIAMPS VOLT AMPS WATTS 2 61 7 62 10 25 63 5 60 120 copper 2 60 31 7 7 61 240 60 2 71 8 77 73 1 120 50 2 71 8 76 36 5 240 50 2 67 7 80 piatinum 65 4 100 0 120 60 ...

Page 9: ...ite ohms 3700 ohms infinite ohms 4000 ohms infinite ohms 1760 ohms i n f i n i t e ohms 2000 ohms infinite ohms 3520 ohms infinite ohms 4000 ohms infinite ohms 0 2 7 0 120 2 0 0 13 220 240 no DC 125 DC 220 DC 250 DC CONSTRUCTION The relay case is suitable for either surface or semi flush panel mounting Hardware is provided with the relay for either mounting method The cover attaches to the case wi...

Page 10: ... care when placing the cover back on to the relay case to avoid damaging the reset mechanism RECEIVING HANDLING AND STORAGE These relays when not included as part of a control panel are shipped in cartons designed to protect them against damage relay examine i t for any damage sustained in transit handling is evident file a damage claim at once with the transportation company and promptly notify t...

Page 11: ...11 and 12 for the connections to be used for different voltage sources See Table 1 for the relay voltage ratings 120 volt AC Operation Coil H1 H2 must be placed in parallel with coil H3 H4 To make the parallel connection connect lead HI to lead H3 and lead H2 to lead H4 Polarity is important 240 volt AC Operation Coil H1 H2 must be placed in series with coil H3 H4 To make this connection connect l...

Page 12: ...een lead to terminal 9 I f a normal 1y open contact is desired the green lead should be connected to terminal 10 There is a shorting bar between terminals 9 and 10 This shorting bar is used to protect current transformer circuits from being opened whenever the relay connection plug is removed This shorting bar may be removed i f i t is not used Some models of IRT51F A relays are rated at 110 220 V...

Page 13: ...IRT51H auxiliary circuits have a special interlock arrangement This position will that will maintain the last energized position of the contacts be maintained even i f power is removed from the relay This special feature must be considered when first placing the relay into service or when returning a relay back into service after completing maintenance on the relay To avoid tripping on start up fo...

Page 14: ...r within the case or any other physical imperfections If any of these are found they should be corrected immediately INSPECTION ACCEPTANCE TESTS PERIODIC CHECKS AND ROUTINE MAINTENANCE Immediately upon receipt of the relay it should be inspected and tested to make sure that no damage has been sustained in shipment and that the relay calibrations have not been disturbed protective relays in the ope...

Page 15: ...net The upper pivot should then be located so the shaft has 1 64 to 1 32 inch end play Both set screws must be securely tightened after the adjustment is complete The contacts should have approximately 1 32 inch wipe That is the stationary contact tip should be deflected about 1 32 inch when the disk and moving contact complete their travel The contact wipe on the left stationary contact is adjust...

Page 16: ...T51 drawout case has an auxiliary brush especially important on current circuits and other circuits with shorting bars that the auxiliary brush be bent high enough to engage the connecting plug or test plug before the main brushes do current transformer secondary circuits from being opened or the current circuits from being interrupted It is This will prevent the RHEOSTAT CLEANING Although the sli...

Page 17: ...desired operating temperature This is the resistance to be used as the simulated RTD load Measure the resistance of the resistor very carefully since a small difference in resistance values can mean several degrees difference between what is desired and what is actually obtained During the 30 minute warm up period set a temperature on the temperature selection dial just over the temperature associ...

Page 18: ...um wire length of 12 inches connect resistor A from Table 9 across terminals 4 and 5 Short terminals 5 and 6 together 1 2 3 4 5 Turn the temperature selection dial to the 160 C setting 6 Apply rated voltage and frequency to the operating circuit 7 Adjust R1 until the moving contact just makes the left IRT stationary contact IRTi_ Tighten the slide band in this position If the R1 sliding tap does n...

Page 19: ...ertemperature calibration point mark the location of the temperature selection dial Do not disturb this dial setting until the reset temperature calibration is complete Next determine the reset temperature with respect to the overtemperature setting For example the overtemperature setting that is required for a particular application is 120 C and the desired reset temperature is liooc The temperat...

Page 20: ...or the prompt replacement of any that are worn broken or damaged When ordering renewal parts address the nearest sales office of the General Electric Company Specify the name of the part wanted quantity required and complete nameplate data of the relay 20 Courtesy of NationalSwitchgear com ...

Page 21: ...lephone Type Relay Interrupting Ratings 3 7 4 Operating Unit Burdens 8 5 Burden for IRT51E Target Seal in Unit 9 6 Burden for IRTS1F Auxiliary Circuit 9 7 Burden for IRT51G and IRT51H Target Seal in Unit and Auxiliary Circuit 9 8 Lead Wire Resistance 14 Calibration Resistor Values 9 19 21 Courtesy of NationalSwitchgear com ...

Page 22: ...T51E Relay External Connections Diagram Type IRT51F Relay External Connections Diagram Types IRT51G and IRT51H Relays Resistance of 10 ohm Copper RTD versus Temperature When Used With the IRT Relay Resistance of 100 ohm Platinum RTD versus Temperature When Used With the IRT Relay Resistance of 120 ohm Nickel RTD versus Temperature When Used With the IRT Relay Fahrenheit to Centigrade Conversion Ou...

Page 23: ... TEMPERATURE DIAL TARGET SEAL IN TARGET SEAL IN TAPS IRT CONTACT INDUCTION DISK SPRING RTH CONTACT Figure 1 050283 1 Type IRT51G and IRT51H Relay Front View Figure 1 050283 1 Type IRT51G and IRT51H Relay Front View 23 Courtesy of NationalSwitchgear com ...

Page 24: ...EOSTAT R1 SLIDE BAND R2 SLIDE BAND DISK LOWER JEWEL BEARING i Figure 2 050283 2 Type IRT51G and IRT51H Relay Right Side View Figure 2 050283 2 Type IRT51G and IRT51H Relay Right Side View 24 Courtesy of NationalSwitchgear com ...

Page 25: ...8 LATCHING RELAY MICRO SWITCH Figure 3 050283 3 Type IRT51G and IRT51H Relay Left Side and Back View Figure 3 050283 3 Type IRT51G and IRT51H Relay Left Side and Back View 25 Courtesy of NationalSwitchgear com ...

Page 26: ... IS NPT 4 i ft LI 12 4 RTD PROBE 1 3 LEAD r WIRE S 36 LONG AWG 22 yPlPE SIZE 7 HEX 8 NPT 2 MPT 1 3 H PIPE SIZE 8 0 47 0 01 BRASS REDUCING BUSHING PIPE FITTING 1 31 0 01 Figure 4 0285A6731 0 Resistance Temperature Detector Assembly 26 Courtesy of NationalSwitchgear com ...

Page 27: ...GEK 86038 c r t CONTACTS g FRAME K b J ARMATURE OPERATING ARM RESIDUAL SCREW LOCKNUT POLE PIECE f HEEL END OPERATING ARM STOP Figure 5 8012106 Telephone Relay 27 Courtesy of NationalSwitchgear com ...

Page 28: ...CK AUXILIARY BRUSH TERMINAL BLOCK SHORTING BAR NOTE AFTER ENGAGING AUXILIARY BRUSH CONNECTING PLUG TRAVELS 1 4 INCH BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK Figure 6 8025039 Drawout Case Contact Assembly 28 Courtesy of NationalSwitchgear com ...

Page 29: ... COILS XLuzzzyjy JrrrT nm RHEO _L IRT LOWER COILfu Rl HI H2 H3 H4 R2 V V V V V 1 V V I 5 7 O o o o 2 4 G 8 SHORT FINGER Figure 7 0285A6213 0 Internal Connections Diagram for the Type IRT51E Relay 29 Courtesy of NationalSwitchgear com ...

Page 30: ...r R3 HI H 2 H3 H 4 riR2 LOU O O OHIGH GREEN LEAD 7 8 A A REMOVE IF NOT USED A Y Y v Y Y V Y Y Yl Y V V V Yj V 5 9 3 7 O o o o o 2 4 G 8 10 Y SHORT FINGER A AUXILIARY TELEPHONE RELAY T TARGET Figure 8 0285 A6214 2 Internal Connections Diagram for the Type IRT51F Relay 30 Courtesy of NationalSwitchgear com ...

Page 31: ...IL _rrn rrru o RHEO Q MS 7 IRT LOWER COILS_ Rl R2 A R 3 HI H2 HZ H4 y v v y y v v v v v V V V V 5 3 7 9 o o o o o 2 4 G 8 10 M5 M U ML RESET SWITCH OP AUXILIARY OPERATING UNIT RE AUXILIARY RESET UNIT T5TI TARGET SEMrlM UNIT Figure 9 0285A6215 I Internal Connections Diagram for the Type IRT51G and IRT51H Relays SHORT FINGER 31 Courtesy of NationalSwitchgear com ...

Page 32: ... A_JUU 49 INCLUDED ELEMENT DEV DESCRIPTION TYPE NO rrr L t 9 49 TIRTL TSI INDUCTION TEMP RELAY RT 51F 4 9 r TEMP SELECTION j 49 RHEOSTAT IRTi LEFT PONT HOT TARGET SEAL IN UNIT TSI 2 CIRCUIT PREAKER 52 AUX CONTACT TRIP COIL TC O RESIST TEMP DETECTOR 28 4 52 TC O 11 HRTDr Aw N 0TF A Figure 10 0184B8779 1 Sh 1 External Connections Diagram for the Type IRT51E Relay 32 Courtesy of NationalSwitchgear co...

Page 33: ...C c T 49 49 TRTL A 6 5 4 INCLUDED ELEMENT DEV ITO 49 TYPE DESCRIPTION jNOTE A 71 IRTR IRT 51F INDUCTION TEMP RELAY 49 i i IRJs RIGHT CONT uCQI D LEFT CONT HOT IRTL wm A A IXII IA R Y UNIT TARGET 28 X CIRCUIT BRFAKER AUX CONTACT 5 NOTE A LEAD GROUNDED AT RTD TERMINAL BOARD NOTE B LINK SHOWN IN POSITION FOR 120V 50 60 HZ OR 12 5V DC SHIFT LINK TO HIGH POSITION FOR 240V 50 60 HZ OR 250V DC n TRIP COR...

Page 34: ...ON TYPE NO L 49 49 I NOTE A TRT5IG OR H INDUCTION TEMP RELAY IRTL 4 IRTR T 49 iRJfi RIGHT CQNT iCOLD i IRTL LEFT CQNT HOT AUX OPER UNIT AUX RESET UNIT MANUAI RESET SWITCH TARGET SEAL IN UNIT i TR TP 1 CP 28 R _ MS_ XSI 15 15 1 49 1 49 U49 R TD I E R MVNA L H0 A RD N on A RE RE OP 14 16 18 28 RES 1ST TEMP DETECTOR CIRCUIT BREAKER TRIP COIL AUX CONTACT 52 TC N OT 1 B CONNECT POWER SUPPLY TO STUDS 1 ...

Page 35: ...Ll ry 7 V A i i 7 VY X u I 4 2 X I X o 2 JX UJ o 12 i i I I CD tn UJ cc 10 I I O H cr 8 200 160 120 80 TEMPERATURE IN DEGREES CENTIGRADE Figure 13 0285A6732 Sh 1 UJ Resistance of 10 Ohm Copper RTD Versus Temperature When Used With the IRT Relay Revised since last issue 35 Courtesy of NationalSwitchgear com ...

Page 36: ... 180 Z X X Zi I 5 160 1 a X I o Z x z y LU z M O X I I z 140 r 01 CO CD cr i 120 cr 100 80 120 160 200 TEMPERATURE IN DEGREES CENTIGRADE Figure 14 0285A6732 Sh 2 1 Resistance of 100 Ohm Platinum RTD Temperature When Used With the IRT Relay Versus 36 Courtesy of NationalSwitchgear com ...

Page 37: ...y i 1 Z TTI i i n y 2 2 0 z i X 0 o Z 0 y Z LL I I r o 180 i in i i n UJ i cr I 140 i i i a I 00 il 200 160 120 00 TEMPERATURE IN DEGREES CENTIGRADE Figure 15 0285A6732 Sh 3 2 Resistance of 120 Ohm Nickel RTD Versus Temperature When Used With the IRT Relay Revised since last issue 37 Courtesy of NationalSwitchgear com ...

Page 38: ...0 f UJ i X i UJ cr i 320 y UJ UJ cr o Z UJ 240 o 2 UJ 160 Q UJ CL i UJ H 80 y 7 i 0 40 80 200 24 0 0 120 160 TEMPERATURE I N DEGREES CENTIGRADE Figure 16 0285A6732 Sh 4 1 Fahrenheit to Centigrade Conversion Revised since last issue 38 Courtesy of NationalSwitchgear com ...

Page 39: ...lUT T 76MM 1 4 3 7 5 111MM T 8 8 1 2 223MM l 3 9 0 6 99MM 4 2 8 1 1 08MM I O OG O 0Q 1 4 6 8 37MM i 1 718 2 5 C 2 8 4 3 72MM 18MM 6MM 2 1 8 2 1 8 5 0 0 12MM T Y P I C A L 5 2 5 5MM i 5MM 133MM 5 6 8 7 144MM PANE 3 4 DRILL 10 HDLES 19MM PANEL DRILLING FDR SEMI FLUSH MOUNTING FRDNT V I E W PANEL DRILLING FDR SURFACE MOUNTING FRDNT V I E W 5 1 6 1 8 STUD 3 0 6MM V I E W SHOWING ASSEMBLY OF HARDWARE F...

Page 40: ...M t 1 75 46MM 1 t i i 3 50 88MM t f I o 75 247MM CUTdUT 5 562 141 MM 1 10 000 254MM I 4 50 I 114MM f I I 1 468 37MM G J I 718 18MM 2 50 2 843 72MM 6MM 218 218 500 5 25 5MM 5MM 12MM TYPICAL 133MM 5 687 PANEL 144MM 3 4 DRILL 20 HOLES 19MM PANEL DRILLING FDR SURFACE MOUNTING FRONT VIEW PANEL DRILLING FOR SEMI FLUSH MOUNTING FRONT VIEW CA 5 16 18 STUD 3 0 76MM VIEW SHOWING ASSEMBLY OF HARDWARE FOR SUR...

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