Areva MVAJ05, Service Manual

Page 1: ...Types MVAJ05 10 20 Tripping and Control Relays Service Manual R8141B...

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Page 3: ...of the printed circuit board Avoid touching the electronic components printed circuit track or connectors 3 Do not pass the module to any person without first ensuring that you are both at the same e...

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Page 5: ...13 2 3 Insulation tests 14 2 4 Operate reset operation 14 2 4 1 Self hand electrical and hand electrical reset 14 2 4 2 Self reset 2 5s delayed reset 15 2 5 Restoration of wiring 15 2 6 Problem analys...

Page 6: ...3 Figure 6 Typical application diagram MVAJ102 24 Figure 7 Typical application diagram MVAJ103 25 Figure 8 Typical application diagram MVAJ104 26 Figure 9 Typical application diagram MVAJ105 27 Figure...

Page 7: ...NG 3 3 EQUIPMENT OPERATING CONDITIONS 4 3 1 Current transformer circuits 4 3 2 External resistors 4 3 3 Battery replacement 4 3 4 Insulation and dielectric strength testing 4 3 5 Insertion of modules...

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Page 9: ...earth terminal Note This symbol may also be used for a protective safety earth terminal if that terminal is part of a terminal block or sub assembly e g power supply NOTE THE TERM EARTH USED THROUGHOU...

Page 10: ...otection Remove insulating strip from battery compartment 3 EQUIPMENT OPERATING CONDITIONS The equipment should be operated within the specified electrical and environmental limits 3 1 Current transfo...

Page 11: ...inserted or withdrawn from the equipment whilst it is energised This is to avoid possible shock or damage hazards Hazardous live voltages may be accessible on the extender card Insertion and withdraw...

Page 12: ...ory Overvoltage IEC 601010 1 1990 A2 1995 Category III EN 61010 1 2001 Category III Distribution level fixed insulation Equipment in this category is qualification tested at 5kV peak 1 2 50 s 500 0 5J...

Page 13: ...when unpacking and installing the relays so that none of the parts are damaged or their settings altered and must only be handled by skilled persons Relays should be examined for any wedges clamps or...

Page 14: ...hdrawn module care should be taken to avoid contact with components and electrical connections When removed from its case for storage the module should be placed in an electrically conducting anti sta...

Page 15: ...ved if this feature is not required NB This link must remain fitted to MVAJ101 and 201 relays to enable the economising circuit Relay type Feature Link in Link out MVAJ051 053 054 055 Link not availab...

Page 16: ...and its associated wiring may be insulation tested between all electrically isolated circuits all circuits and earth An electronic or brushless insulation tester should be used giving a dc voltage no...

Page 17: ...tween 2 2 8s 2 5 Restoration of wiring Restore any external wiring connections that may have been disturbed during the above tests 2 6 Problem analysis Repeat Section 2 2 with particular attention to...

Page 18: ...the armature Some mechanically operated contact gaps must be measured directly with feeler gauges at the contact tips The relay contact state is always defined with the relay in the reset position unl...

Page 19: ...to 25 grammes Break Cut off contact bottom right hand viewed from front Force to break 25 to 30 20 to 25 grammes Contact gap measured 0 4 to 0 6 0 4 to 0 6 mm at the armature centre Section 5 SPARES W...

Page 20: ...01 MVAJ103 01 hand reset 01 MVAJ104 01 electrical reset 01 MVAJ105 01 hand and electrical reset 20 contact versions 01 MVAJ201 01 self reset 01 MVAJ202 01 self reset 2s delayed reset 01 MVAJ203 01 ha...

Page 21: ...CT shorting links make before b and c disconnect a b c long terminals short terminals break before c 1 2 Link in for high burden Link out for low burden Vx Viewed from front 1 3 5 7 9 11 A 2 4 6 8 1 2...

Page 22: ...CT shorting links make before b and c disconnect a b c long terminals short terminals break before c 1 2 Link in for high burden Link out for low burden Vx Viewed from front 1 3 5 7 9 11 A 2 4 6 8 1 2...

Page 23: ...Module terminal block viewed from rear 1 27 2 9 10 11 3 4 5 6 7 8 12 22 24 26 28 25 5M M M M M M 4M 1B B M M M M 3M 2B B M M B M 2M 3B B B M B M Combination of output contacts Output contacts to modul...

Page 24: ...Module terminal block viewed from rear 1 27 2 9 10 11 3 4 5 6 7 8 12 22 24 26 28 25 5M M M M M M 4M 1B B M M M M 3M 2B B M M B M 2M 3B B B M B M Combination of output contacts Output contacts to modul...

Page 25: ...6 8 CT shorting links make before b and c disconnect long terminals short terminals break before c 2 Link in for high burden Link out for low burden Notes 1 a b c 3 Link for economising must be fitte...

Page 26: ...n M Make B Break 1 3 5 7 9 11 13 15 17 19 10 12 14 16 18 20 2 4 6 8 2 4 6 8 10 12 14 16 18 20 B 1 3 5 7 9 11 13 15 17 19 A Viewed from front 27 PR 25 CT shorting links make before b and c disconnect l...

Page 27: ...Link in for high burden Link out for low burden 3 Do not fit link Contact description M Make B Break 10M M M M M M M M M M M 8M 2B B M M M M B M M M M 6M 4B B B M M M B B M M M 4M 6B B B B M M B B B M...

Page 28: ...nt 3 Link to enable reset inhibitor economising coil CT shorting links make before b and c disconnect long terminals short terminals break before c 2 Link in for high burden Link out for low burden No...

Page 29: ...12 14 16 18 20 B 1 3 5 7 9 11 13 15 17 19 A Viewed from front 27 Reset 25 CT shorting links make before b and c disconnect long terminals short terminals break before c RL1 10 OP RL1 A T1 T25 T2 T26...

Page 30: ...10B 4 3 8M 12B 4 4 1 M M M M M M M M M M 2 B M M M M B M M M M 3 B B M M M B B M M M 4 B B B M M B B B M M 30 32 34 36 38 40 42 44 46 48 B 29 31 33 35 37 39 41 43 45 47 A Case earth Module terminal bl...

Page 31: ...Contact stacks viewed from front Right hand Left hand 2 4 6 8 10 14 18 20 B 16 12 1 3 5 7 9 13 17 19 A 15 11 30 32 34 36 38 42 46 48 B 44 40 29 31 33 35 37 41 45 47 A 43 39 Case earth Module terminal...

Page 32: ...35 37 39 41 43 45 47 A Contact stacks viewed from front 20M 1 1 18M 2B 2 1 16M 4B 2 2 14M 6B 3 2 12M 8B 3 3 10M 10B 4 3 8M 12B 4 4 6M 14B 5 4 4M 16B 5 5 OP OP RL1 10 RL3 10 Vx Case earth Module termi...

Page 33: ...8 20 B 1 3 5 7 9 11 13 15 17 19 A 30 32 34 36 38 40 42 44 46 48 B 29 31 33 35 37 39 41 43 45 47 A CT shorting links make before b and c disconnect long terminals 2 Link in for high burden Link out for...

Page 34: ...0 12 14 16 18 20 B 1 3 5 7 9 11 13 15 17 19 A 30 32 34 36 38 40 42 44 46 48 B 29 31 33 35 37 39 41 43 45 47 A Case earth Module terminal block viewed from rear 11 1 3 5 7 9 13 15 17 19 21 23 25 27 2 4...

Page 35: ...Resetting Volts DC Diagram no Visual inspection Check operation at 60 LNV Check operating time at 100 LNV ms ms Check contact continuity Check electrical reset at 60 LNV Check reset time at 100 LNV M...

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Page 37: ...t Ref ___________________ Serial No ___________________ Date ___________________ 1 What parameters were in use at the time the fault occurred AC Volts ___________________ Main VT Test set DC Volts ___...

Page 38: ...No Intermittent Yes No Time delayed Yes No Delete as appropriate By how long ___________________ 8 What indications if any did the relay show 9 Was there any visual damage 10 Any other remarks which m...

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Page 40: ...AREVA T D s Automation Information Systems Business www areva td com T D Worldwide Contact Centre online 24 hours a day 44 0 1785 25 00 70 http www areva td com contactcentre Publication R8141B...