GE IJS52D, Instructions Manual

Page 1: ...GEI 90802E INSTRUCTIONS SYNCHRONISM CHECK RELAY TYPE IJS52D GE Protection and Control 205 Great Valley Parkway Malvern PA 19355 1337 Courtesy of NationalSwitchgear com ...

Page 2: ...CEPTANCE TESTS Visual Inspection Mechanical Inspection Electrical Tests 6 6 7 7 INSTALLATION PROCEDURE Electrical Tests 7 8 PERIODIC CHECKS AND ROUTINE MAINTENANCE Contact Cleaning Mechanical El ectrical 8 8 9 9 9 SERVICING Mechanical Adjustments Electrical Adjustments 9 9 RENEWAL PARTS 10 11 LIST OF FIGURES Cover Photo 8038824 2 Courtesy of NationalSwitchgear com ...

Page 3: ...ith each other because of different line and load characteristics This condition may exist for example where one line is supplying a lagging load through a transformer bank and the second is unloaded The relay however can be calibrated to permit closure of the breaker under these conditions if the voltage and the phase angle differences are not excessive However the IJS relay cannot discriminate b...

Page 4: ...is proportional to the vector difference of the voltages The operating torque is maximum when they are in phase the reverse is true of the restraining torque The closing angle of the relay is defined as the maximum phase displacement of the two voltages at which the relay will close its synchronism check contact when the voltages are at rated value The 20 closing angle is considered standard howev...

Page 5: ... settings with zero phase displacement and with rated voltage at 60 cycles on both circuits Curves for 50 cycles are similar The telephone type undervoltage units are calibrated to pick up at 50 or less of rated voltage and to drop out at 15 or more of rated voltage BURDENS The burdens for the synchronism check unit are given in Table I The burden varies with the phase displacement of the two volt...

Page 6: ...used separately as shown in the typcial external connections in Figure 9 RECEIVING HANDLING AND STORAGE These relays when not included as part of a control panel will be shipped in cartons designed to protect them against damage relay examine i t for any damage sustained in transit resulting from rough handling is evident file a damage claim at once with the transportation company and promptly not...

Page 7: ...ore parting the contacts The armature should then be operated by hand and the gap and wipe again checked as described above ELECTRICAL TESTS Connect the relay as shown in Figure 10 and check the following Check that the relay picks up with approximately the time delay shown 1n Figure 6 when a single phase source of at least rated voltage is connected to both operating coils Check that the relay pi...

Page 8: ...phone type undervoltage relays should be checked as described in the section on ACCEPTANCE TESTS PERIODIC CHECKS AND ROUTINE MAINTENANCE In view of the vital role of protective relays in the operation of a power The interval system i t is important that a periodic test program be followed between periodic checks will vary depending upon environment type of relay and the user s experience with peri...

Page 9: ...ts just touch with the time dial set at 0 A fine adjustment can be obtained by moving the stationary contact brush in or out by means of its adjusting screw However in the final adjustment the contact brush must be positioned so that there is 1 64 to 1 32 wipe with the contact fully closed Be sure that the screws are securely tightened after the adjustment is made 1 The stop arm leaf spring should...

Page 10: ... lagging V2 by 200 Use the same procedure for other closing angle settings Pickup and Dropout The pickup and dropout of the telephone type relay may be changed by adjusting the gap between the armature and the pole face by bending the contact operating arm stop After this adjustment is made the contact wipe and gap must be rechecked Operating Time If it is necessary to adjust the time characterist...

Page 11: ...y Elementary Diagram of External Connections of Type IJS Relays Time Test Connections for Relay Type IJS52D Connections and Curve to Make Approximate Closing Angle Adjustment without Phase Shifter on 50 60 Cycle Type IJS52D Relay at Rated Voltage Cross Section of Drawout Case Showing Position of Auxiliary Brush IJS52D3A Cutoff Slip vs Time Dial Settings for Closing Angle Settings of 20 40 and 60 I...

Page 12: ... U N I T L A m m m ifWs ADJUSTABLE RESISTOR TO EQUALIZE CLOSING ANGLES m m jm i m m M s 3 f 85 ADJUSTABLS X i RESISTOR TO SET C L O S I N G ANGLE A AUXILIARY UNIT L 5 S HI A U X I L I A R Y 1 U N I T B 1 m i OPERATING COIL F If _ D R A G jFffcMAGNET RESTRAINING C O I L DISC A N D SHAFT PS 5 m SciSsX UX S sm iM i I V s r X ti i t T LSS W x t IK ill ls H i s 4 a It m i I il 1 I art 3 S 3 Figure 3 80...

Page 13: ...A N G i f lOEGREES RFTWF T N C I R C U I T S Figure 5 0376A0964 1 Typical Time Phase Angle Characteristic of 50 60 Cycle Relay IJS52D3 with Rated Voltage on Both Circuits Figure 4 K 6400151 3 Typical Time Phase Angle Curve of Relay Type IJS52D1 with Rated Voltage 20 4 16 e b i f i I f4 T EE jo0 p i i L t 12 XT C 0 Q 2 o o uJ UJ cr V i i UJ 2 r r WCOO r A7 iN 4 fA 1 3 8 5 N CMBCK 8 TA4 V i I 4 i v ...

Page 14: ...0 M Z 13 27L e 1 i i D 52 FIG LIVE I 3IJS FIG 1 DEAD LINE DEAD BUS OR DFAD LINE y H X 0 c c 5 r 5 1 1 1 1 1 27L 1 2b CLOSING CIRCUIT or 52 ro 6 t ANTI PUMP SEAL IN 10 2 IJS B idL 2 US 1 10 6 1 10 10 1 l f 4T6 371 l i CONNECT IONS FOR BREAKER CLOSING WITH EITHER THE BUS OR LINE DEAD SEE FIG 1 TO 6 FOR OTHER CONNECTIONS 0FIG 3 DEAD BUS LIVE LINE D FI 4 DEAD BJSjLIVE LINE OR LIVE BUS DEAO LINE DEVICE...

Page 15: ...ustment without Phase Shifter on 50 60 Cycle Type IJS52D Relay at Rated Voltage CONNECTING PLUG MAIN BRUSH CONNECTING BLOCK TERMINAL BLOCK AUXILIARY BRUSH NOTE AFTER ENGAG NG AUXILIARY BRUSH CONNECTING PLUG TRAVELS A INCH BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK Figure 12 8025039 Cross Section of Drawout Case Showing Position of Auxiliary Brush 15 Courtesy of NationalSwitchgear com ...

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Page 18: ...TtlUT 76MM f 1 I 4 3 7 5 1 1 1MM 1 8 8 1 2 223MM t 3 9 0 6 1 99MM t JlOpOo Oo 4 2 8 1 1 08MM i I 0 0 1 4 6 8 37MM i f I 7 1 8 18MM 2 5 0 2 8 4 3 72MM 6MM 1 2 1 8 5MM PANEL 2 1 8 5 0 0 12MM T Y P I C A L 5 2 5 i i 5MM 133MM 5 6 8 7 144MM 3 4 DRILL 10 HOLES 19MM PANEL DRILLING FOR SEMI FLUSH MOUNTING FRONT V I E W PANEL DRILLING FOR SURFACE MOUNTING FRONT V I E W CASE 5 1 6 1 8 STUD 3 0 76MM V I E W...

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Page 20: ...å å å å 3RZHU 0DQDJHPHQW 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 www ge com indsys pm Courtesy of NationalSwitchgear com ...