MVAX 12_21_31_91 Manual GB
Contents
1. AUTOMATION MVAX 12 21 31 91 Trip Circuit Supervision Relay Technical Manual R8010Q an ALSTOM Note The technical manual for this device gives instructions for its installation commissioning and operation However the manual cannot cover all conceivable circumstances or include detailed information on all topics In the event of questions or specific problems do not take any action without proper authorization Contact the appropriate Alstom Grid technical sales office and request the necessary information Any agreements commitments and legal relationships and any obligations on the part of Alstom Grid including settlements of warranties result solely from the applicable purchase contract which is not affected by the contents of the technical manual This device MUST NOT be modified If any modification is made without the express permission of Alstom Grid it will invalidate the warranty and may render the product unsafe The Alstom Grid logo and any alternative version thereof are trademarks and service marks of Alstom Grid All trade names or trademarks mentioned herein whether registered or not are the property of their owners This manual is provided for informational use only and is subject to change without notice 2010 Alstom Grid All rights reserved SAFETY SECTION STANDARD SAFETY STATEMENTS AND EXTERNAL LABEL INFORMATION FOR Alstom Grid EQUIPMENT INTRODUCTION This Safety Secti2. WOIdAL SI L v gt q zs S3HOLIMS 1109 div xnv 89 1 74 L Z L XA Adans Z xA AlddNS dll dll P4068ENa Service Manual R80100 MVAX Page 23 24 T COMMISSIONING TEST RECORD Trip Supply Supervision Relay Type 11 Type MVAX 12 Type MVAX 21 Type MVAX 31 Type MVAX 91 delete as appropriate Test 2 7 1 Date Station Circuit Reay Model No Serial No Relay type Circuit supply ref V rating range Value of ext resistor fitted MVAX 11 Trip Vx1 IN N A MVAX 12 Trip Vx1 INV Rexrl ohms MVAX 21 Alarm Vx1 IV Rexri ohms Trip Vx2 IV Rpa2 ohms MVAX 31 91 Alarm Vx1 IV Rexri ohms Trip Vx2 IN 2 3 ohms Commissioning preliminaries O Tick if satisfactory Insulation tests Satisfactor Not required L DO 5 Test results MVAX 11 relay Resistance across terminals 21 27 Q 27 28 Q Trip supply voltage V CB open Relay stable O CB closed Relay stable L Trip circuit open Relay operates O Contacts checked O Test results MVAX 12 relay Test 2 7 2 Relay resistance ohms Relay operates satisfactlorily at Volts A Relay drops off at Volts Fuse removal Alarm initiation satisfactory L tick Note These tests omitted only at site engineers discretion R80100 Page 24 24 Test results MVAX 21 relay Test 2 7 3 Measured trip supply 1 CBopen 2 closed 3 O tic
3. 5 2 Output contacts not changing state Pushrod not in position Check output terminals with reference to diagram Contamination of contacts MVAX 21 31 91 Units RL2 RL3 contacts not closing 5 3 Reset time on MVAX 12 too short Check capacitor C1 is not open circuit or short circuit Contacts should be cleaned with the burnishing tool supplied in relay tool kits On no account should knives files or abrasive materials be used Check mechanical settings as per Section 4 6 SPARES When ordering spares quote the full relay model number and any component references numbers or briefly describe the parts required 6 1 Repairs Should the need arise for the equipment to be returned to Alstom Grid for repair then the form at the back of this manual should be completed and sent with the equipment together with a copy of any commissioning test results Service Manual R80100 MVAX Page 16 24 9 DUO WI WC sjpuwJe OJ sj9ojuo9 lt gt jndjno jo suoijpuiquio s puruue f 9 eojeq ypa q sppuruuej oys q 9 pun e1ojeq syur Buoys Zs 30N 1091 wol 20 4 puru e npow gt 9509 Circuit and application diagram trip supply supervision Figure 1 Service Manual R80100 M
4. VDRs are fitted to the equipment these may present a risk of electric shock orbums if touched Battery replacement Where intemal batteries are fitted they should be replaced with the recommended type and be installed with the corect polarity to avoid possible damage to the equipment buildings and persons Insulation and dielectric strength testing Insulation testing may leave capacitors charged up to a hazardous voltage Atthe end of each part of the test the voltage should be gradually reduced to zero to discharge capacitors before the test leadsare disconnected Insertion of modules and pcb cards Modules and PCB cards must not be inserted into or withdrawn from the equipment whilst it is energized since this may result in damage Insertion and withdrawal of extender cards Extender cards are available for some equipment If an extender card is used this should not be inserted or withdrawn from the equipment whilst it is energized This is to avoid possible shock or damage hazards Hazardous live voltages may be accessible on the extendercard Extemal test bloc ks and test plugs Great care should be taken when using extemal test blocks and test plugs such as MMLG MMLB and MiCOM P990 types hazardous voltages may be accessble when using these CT shorting links must be in place before the insertion or removal of MMLB test plugs to avoid potentially lethal volta ges Note When a MICOM P992 Test Plug is inserted
5. altered pro rata A Table Table 1 of acceptable tolerance for the test is given Measure the trip supply and alarm supply voltages immediately prior to tests and note Test 1 With the circuit breakers open check that no voltage appears across terminals 13 and 14 21 and 22 ofthe relay Check that the voltage appearing across terminals 27 and 28 comply with that given in Figure 1 alarm supply and that the front relay RL1 has operated Reset the flag Test 2 With the circuit breakers closed check that the front relay remains operated Measure the voltage across terminals 13 14 21 and 22 Ensure that these comply with Figure 1 trip supply Test 3 With the circuit breakers closed apply a temporary short circuit across each of the external resistors RExr2 1 and Rex12 2 of the trip supply circuits Ensure the circuit breakers do not trip Remove the short circuits and reapply them across terminals 13 and 14 and 22 of the relay Check that RL1 drops off to initiate alarm circuits and that the RL1 flag indication is given Ensure the circuit breakers do not trip Remove the short circuits and reset the flag alarms Note Where 2 resistors are used in series for Rext2 a temporary short circuit should be applied across each resistor in turn Service Manual R80100 MVAX 2 7 6 Page 11 24 Test 4 With the circuit breakers closed operate or simulate operation of the associated trip relays Note that the circ
6. in Table 2 Repeat for terminals 21 and 22 ve of the relay The same voltage limits apply Both these voltages are derived from the trip supply Check the voltage across terminals 27 and 28 ve of the relay This should be within the limits given in Table 2 for the alarm supply Note that the front relay unit RL1 is picked up and reset its flag Test 3 With the circuit breaker closed check that the front relay RL1 remains operated Check that no voltage appears across terminals 21 and 22 of the relay Ensure the voltage across terminals 13 and 14 ve has increased from that obtained in Test 1 to that indicated in Table 2 Test 4 With the circuit breaker closed as in test 3 above check that the voltage between terminals 14 and 22 ve is zero Measure the resistance between terminals 14 and 22 which should comply within 10 of the values given in Table 2 Note This test check that contact 52 b is open in the breaker closed condition Test 5 With the circuit breaker closed as above apply a temporary short circuit across RExT2 of the trip supply circuit Ensure the CB does not trip Remove the short circuit and re apply it across terminals 13 and 14 of the relay Check that RL1 drops off to initiate alarm circuits and that RL1 flag indication is given Remove the short circuit and reset the flag alarms Note Where 2 resistors are used in series for 2 a temporary short circuit should be applied across e
7. into the TYPE MVAX TRIP CIRCUIT SUPERVISION RELAY R80100 Page 1 24 Service Manual R80100 MVAX Page 3 24 CONTENTS 1 INSTALLATION 5 1 1 General 5 1 2 Unpacking 5 1 3 Storage 5 1 4 Relay mounting 5 2 COMMISSIONING 6 2 1 General 6 2 2 Wiring 6 2 3 Insulation 6 2 4 MVAX 11 6 2 5 MVAX 12 6 2 6 MVAX 21 31 91 7 2 7 Electrical operation tests 7 2 7 1 MVAX 11 only 7 272 MVAX 12 only 7 2 7 3 MVAX 21 only 8 274 MVAX 31 MVAX 91 3 separate MVAX 31 s in a size 8 case 9 2 75 MVAX 31 04 only 10 276 MVAX 31 with CCT breaker closure inhibit contact 11 3 MAINTENANCE 13 4 MECHANICAL SETTINGS 13 4 1 General 13 4 1 1 With the armature closed the clearance between the back of the armature and the back stop should be 0 075 0 2mm 0 003 0 008 13 4 1 2 Nominal armature gap open 13 4 2 Contact settings 14 4215 11 Unit RL1 14 4 2 2 MVAX 12 MVAX 21 31 Unit RL1 14 4 2 3 MVAX 21 Unit RL2 MVAX 31 Units RL2 and 14 4 3 Mechanical flag settings 14 R80100 Page 4 24 4 3 1 Hand reset reverse flags 4 3 2 Self reset reverse flags 5 PROBLEM ANALYSIS 5 1 Failure to operate reset 5 2 Output contacts not changing state 5 3 Reset time on MVAX 12 too short 6 SPARES 6 1 Repairs T COMMISSIONING TEST RECORD FIGURES Figure 1 Circuit and application diagram trip supervision relay Figure 2 Supervision of interposing control relay type MVAW Figure 3 Supervision of trippin
8. or simulate operation of the associated trip relay Note that the CB trips but ensure that RL1 of the MVAX does not operate RL1 and RL2 units are slugged on drop off to prevent mal operation during the transition period Service Manual R80100 MVAX Page 9 24 Relay V rating 24 27 30 34 48 54 110 125 220 250 Ref V for tolerance 27 34 48 110 220 Test 1 Hand reset Full volts Full volts Alam flag ino ext 35 3 38 8 29 1 36 3 24 9 32 5 supply Self reset Full volts Full volts 374 404 38 2 46 6 285 370 flag no ext R no ext R Test 2 Hand reset ico 470 180 205 258 298 536 612 107 0 120 9 Trip flag supply RM 120 140 180 20 5 25 8 29 8 53 6 61 2 107 0 120 9 Table 1 2 7 4 MVAX 31 MVAX 91 3 separate MVAX 31 s in a size 8 case The following tests assume trip and alarm battery voltages are equal to the maximum voltage of the relay s voltage rating range For other voltages within the relay s normal voltage rating range tolerance bands for other measured supply voltages should be altered pro rata A table Table 2 of acceptable tolerances for each test is given below Measure the trip supply and alarm supply voltages immediately prior to the tests and note Tests 1 and 2 With the circuit breaker open check the voltage across terminals 13 and 14 ve of the relay This should comply with the voltage tolerance limited given
9. AX 21 31 and 91 Unit RL4 10 900 MVAX 21 Unit RL2 0 7mm 0 030 MVAX 31 91 Unit RL2 and Note On the MVAX 12 a screw is fitted to the armature It must protrude by 0 075 0 2mm 0 003 0 008 R80100 Service Manual Page 14 24 MVAX 4 2 Contact settings 4 2 1 MVAX 11 Unit With the armature closed onto a 0 25mm 0 011 feeler gauge the make contacts should be closed but should be open using a 0 38mm 0 015 feeler gauge Force to just close the break contacts 20 25 grams Force to just open the break contacts 18 23 grams Contact gap 1 5 1 75mm 0 06 0 07 4 2 2 12 MVAX 21 31 Unit RL With the armature closed onto a 0 25mm 0 011 feeler gauge the make contacts should be closed but should be open using a 0 35mm 0 013 feeler gauge With the armature closed onto a 0 75mm 0 029 feeler gauge the break contact should be open but should be closed using a 0 8mm 0 031 feeler gauge Force to just close the make contacts 20 25 grams Force to just open the break contacts 20 25 grams Force to just lift the fixed contact off its support 15 20 grams Contact gap for make and break contacts 1 75 2mm 0 07 0 08 Note On MVAX 21 31 Relays To measure the force to just close or the force to just break on the lower right hand contact when viewed from the front of the module it is necessary to carefully lift the upper moving contact blade to remove the pressure on the lower cont
10. VAX Page 17 24 Push button MVAW Interposing control relay 4 P1077ENa Figure 2 Supervision of interposing control relay type MVAW MVAJ Protective Tripping relay relay contact Supervision relay MVAX 11 1 1 1 1 A L 7 10 03 10 4 P1078ENa Figure 3 Supervision of tripping relay type MVAJ Service Manual R80100 MVAX Page 18 24 g DUO UOJ wol p9 8lA WI WC 8 8 W W WE 70 25 sjouwe sj2ojuoo 1910 lt gt Jndjno jo sjouiwis Buoy 2 lp eJojeq Deg ouo 9 peuuoosip 2 q e1ojeq Jn syur Buoys 2 Q 0 ON 1091 20 4 puiue e 86 LC Y ba asp P1079ENa Circuit diagram MVAX21 trip circuit supervision relay without preclosing supervision Figure 4 R80100 Service Manual Page 19 24 MVAX lt uo si umoys jUaWAaBUDUD jpjuo ejoN OU RAN LC 8 45 ro yay ms 1 rl yay ms xno gi 0 76 Aojas duj 109 du Ajddns P1080ENa preclosing Application diagram MVAX21 trip circuit supervision relay without supervision Figure 5 Service Ma
11. ach resistor in turn R80100 Service Manual Page 10 24 MVAX Test 6 With the circuit breaker closed operate or simulate operation of the associated trip relay Ensure the CB trips but ensure that RL1 of the MVAX does not operate The MVAX relay units are slugged on drop off to prevent mal operation during the transition period Relay V rating 24 27 30 34 48 54 110 125 220 250 Ref V for tolerance 27 34 54 125 250 Test 1 Hand 7 8 8 2V 9 4 9 8V 13 6 142V 27 9 29 4V 55 3 58 4 Trip reset flag supply m reset eges vu 9 4 9 8V 13 6 14 2V 27 9 29 4V 55 3 58 4V Test 2 Hand Full volts Full volts Alarm resetflag noext R no ext R 36 5 42 7V 31 8 38 8V 27 3 33 8V supply Self reset Full volts Full volts 38 2 39 3V 40 9 43 7V 31 1 34 0V flag no ext R no ext R Test 3 Hand Trip reset flag 15 7 16 3V 18 8 19 7V 27 1 28 5V 55 8 58 9V 110 6 116 8V supply Self reset flag 12 7 13 3V 18 8 19 7V 27 1 28 5V 55 8 58 9V 110 6 116 8V Test4 Hand 665 1085 3100 7400 14700 reset flag reset 1085 3100 7400 14700 Table 2 275 MVAX 31 04 only The following test assume trip and alarm supply battery voltages equal to the maximum voltage for the relays voltage rating range For other voltages within the relays normal voltage rating range tolerance bands for other measured supply voltages should be
12. act 4 2 3 MVAX 21 Unit RL2 MVAX 31 Units RL2 and RL3 With the armature closed onto a 0 25mm 0 011 feeler gauge the make contact should be closed but should be open using a 0 35mm 0 013 feeler gauge Force to just close the make contact 10 15 grams Force to just lift the fixed contact off its support 10 15 grams Contact gap 1 0 1 1mm 0 038 0 042 4 3 Mechanical flag settings 4 3 1 Hand reset reverse flags With the armature closed onto a 0 45mm 0 018 feeler gauge the flag should be free to fall but should not fall using a 0 35mm 0 013 feeler gauge Adjustment is made to the catch spring on the flag 4 3 2 Self reset reverse flags Adjust the flag operating lever such that the flag side arm is parallel to the frame when viewed from the side and the flag covers the flag label Service Manual R80100 MVAX Page 15 24 5 PROBLEM ANALYSIS 5 1 Failure to operate reset Check diagram for correct input connections Check the correct voltages are applied Ratings values are shown on module front plate Ensure the power supply is capable of supplying the necessary power Ensure correct series resistors are used and connected to correct relay terminals Flag spring may have been distorted and is holding the armature open or closed Check internal wiring Check continuity result open circuit Coil open circuit Internal wiring damaged Series resistor open circuit resistors may be internal or external
13. age across terminals 13 and 14 ve has increased from that obtained in Test 1 to that indicated in Table 3 Test 4 With the circuit breaker closed as in test 3 above check that the voltage between terminals 14 and 22 ve is zero Measure the resistance between terminals 14 and 22 which should comply within 10 of the values given in Table 3 Note This test check that contact 52 b is open in the breaker closed condition Test 5 With the circuit breaker closed as above apply a temporary short circuit across RExT2 of the trip supply circuit Ensure the CB does not trip Remove the short circuit and re apply it across terminals 13 and 14 of the relay Check that RL1 drops off to initiate alarm circuits and that RL1 flag indication is given Remove the short circuit and reset the flag alarms Note Where 2 resistors are used in series for 2 a temporary short circuit should be applied across each resistor in turn R80100 Service Manual Page 12 24 MVAX Test 6 With the circuit breaker closed operate or simulate operation of the associated trip relay Ensure the CB trips but ensure that RL1 of the MVAX does not operate The MVAX relay units are slugged on drop off to prevent mal operation during the transition period Relay V rating 110 125 Ref V for tolerance 125 ze 621800 25 8 31 6V Trip reset flag supply Self reset Seg flag Test 2 Hand Alarm reset fla
14. ck that terminal 13 of the relay case is wired to the POSITIVE of the trip supply Service Manual R80100 MVAX Page 7 24 2 6 MVAX 21 31 91 For MVAX 21 31 and 91 relays check the external wiring to ensure the correct values of external resistors where appropriate are wired to the correct relay terminals in accordance with the following table and the appropriate application diagram Supply volts Alarm supply circuit Trip supply circuit RExT RExT2 and RExT3 as appropriate 24 27 270 ohm 30 34 470 ohm 48 54 240 ohm 1 500 ohm 110 125 1 500 ohm 4 000 ohm 1 200 ohm 220 250 4 100 ohm 2 off 4 000 ohm in series S R reverse flag 2 7 Electrical operation tests 2 7 1 MVAX 11 only Isolate the MVAX from the trip supply batteries by removing fuses links as necessary Connect a supply across relay terminals 21 27 and supply the relevant voltage from the list below Check that the current is within those figures stated in the same column Repeat again only using terminals 27 28 Rated voltage range V 30 34 48 54 110 125 120 250 Test voltage V 30 48 110 220 Terminals 21 27 46 1 56 3mA 24 1 29 5mA 11 13 4mA 11 4 14mA Terminals 27 28 46 1 56 3mA 24 1 29 5mA 11 13 4mA 11 4 14mA 2 7 2 MVAX 12 only Isolate the relay from the trip supply batteries by removing fuses links as necessary Using an ohmmeter check the resistance across the relay side of the fuse
15. ed by skilled persons only Relays should be examined for any wedges clamps or rubber bands necessary to secure moving parts to prevent damage during transit and these should be removed after installation and before commissioning Relays which have been removed from their cases should not be left in situations where they are exposed to dust or damp This particularly applies to installations which are being carried out at the same time as constructional work Storage If relays are not installed immediately upon receipt they should be stored in a place free from dust and moisture in their original cartons and where de humidifier bags have been included in the packing they should be retained The action of the de humidifier crystals will be impaired if the bag has been exposed to ambient conditions and may be restored by gently heating the bag for about an hour prior to replacing it in the carton Dust which collects on a carton may on subsequent unpacking find its way into the relay in damp conditions the carton and packing may become impregnated with moisture and the de humidifying agent will lose its efficiency The storage temperature range is 259 to 70 Relay mounting The installation should be clean dry and reasonably free from dust and excessive vibration The site should preferably be well illuminated to facilitate inspection An outline diagram is normally supplied showing panel cut outs and hole centers For individual
16. es No Intermittent Yes No Time Yes No Delete asappropriate delayed By how long _ 8 What indicationsif any did the relay show 9 Wasthere any visual damage 10 Any other remarks which may be useful Signature Title Name in capitals Company name PUBLICATION R8010Q eo ALSTOM Alstom Grid Substation Automation Solutions Business www alstom com grid Alstom Grid Worldwide Contact Centre online 24 hours aday 44 0 1785 250070 www alstom com grid contactcentre
17. g Edd supply Self reset 55 _ 46 6V flag an 51 6 63 1V Trip reset flag supply flag Test 4 Hand 7400 reset flag Self reset 7400 flag Table 3 MVAX31 with CCT breaker clsoure inhibit contact Service Manual R8010P MVAX 4 1 1 Page 13 24 MAINTENANCE Periodic maintenance is not necessary However periodic inspection and test is recommended This should be carried out every 12 months or more often if the relay is operated frequently or is mounted in poor environmental conditions Tests 2 3 2 4 2 5 2 6 and 2 7 should be carried out to prove operation MECHANICAL SETTINGS General Armature gap measurements should be made with the top of the feeler gauge level with the centre line of the core Contact pressures are measured with a gramme gauge at the contact tips In general contact gaps and follow through are defined by quoting an armature gap at which the tips should be just closed or just open The relay contact state is always defined with the relay in the unenergised position unless otherwise specified on the appropriate circuit diagram Contact Type Symbol used on diagrams Normal duty Make M Normally open Break B Normally closed With the armature closed the clearance between the back of the armature and the back stop should be 0 075 0 2mm 0 003 0 008 Nominal armature gap open MVAX 11 Unit RL1 1 38mm 0 055 MVAX 12 MV
18. g relay type MVAJ Figure 4 Circuit diagram MVAX21 trip circuit supervision relay without preclosing supervision Figure 5 Application diagram MVAX21 trip circuit supervision relay without preclosing supervision Figure 6 Circuit diagram MVAX31 trip circuit supervision relay with preclosing supervision Figure 7 Application diagram MVAX31 trip circuit supervision relay with preclosing supervision MVAX 14 14 15 15 15 15 15 15 23 16 17 17 18 19 20 21 Service Manual R80100 MVAX 1 1 1 2 1 3 1 4 Page 5 24 INSTALLATION General Protective relays although generally of robust construction require careful treatment prior to installation on site By observing a few simple rules the possiblity of premature failure is eliminated and a high degree of performance can be expected Relays are either despatched individually or as part of a panel rack mounted assembly in cartons specifically designed to protect them from damage Relays should be examined immediately they are received to ensure that no damage has been sustained in transit If damage has been sustained in transit a claim should be made to the transport company concerned immediately and the nearest Alstom Grid representative should be promptly notified Unpacking Care must be taken when unpacking and installing the relays so that none of the parts are damaged or their settings altered and must at all times be handl
19. ges are equal to the maximum voltage of the relay s voltage rating range For other voltages within the relays normal voltage rating range tolerance bands for other measured supply voltages should be altered pro rata A table Table 1 of acceptable tolerances for each test is given below Measure the trip supply and alarm supply voltages immediately prior to the tests and note Test 1 With the circuit breaker open check that no voltage appears across terminals 13 and 14 of the relay Check that the voltage appearing across terminals 21 and 28 comply with that given in Table 1 alarm supply and that the front relay RL1 has operated Reset its flag Test 2 With the circuit breaker closed check that the front relay remains operated Measure the voltage across terminals 13 and 14 Ensure that it complies with Table 1 Trip supply Test 3 With the circuit breaker closed apply a temporary short circuit across the external resistor Rext2 of the trip supply circuit Ensure the CB does not trip Remove the short circuit and re apply it across terminals 13 and 14 of the relay Check that RL1 drops off to initiate alarm circuits and that RL1 flag indication is given Ensure the CB does not trip Remove the short circuit and reset the flag alarms Note Where 2 resistors are used in series for 12 a temporary short circuit should be applied across each resistor in turn Test 4 With the circuit breaker closed operate
20. k Test results MVAX 31 relay Test 2 7 4 Measured trip supply 1 and2 CB open CB closed 21 2 closed 5 L tick Note Comments V alarm supply Volts across terminals 13 and 14 Volts across terminals 21 and 28 Volts across terminals 13 and 14 4 O tick V alarm supply Volts across terminals 13 and 14 21 and 22 27 and 28 V 13 and 14 Commissioning Engineer Date Resistance between 14 and 22 6 tick For details of the above tests see Publication R8010 Service Manual MVAX lt lt lt lt lt ohms Customer Witness Date REPAIR FORM Please complete this form and retum it to Alstom Grid SAS with the equipmentto be repaired This form may also be used in the case of application queries Alstom Grid SAS St LeonardsAvenue Stafford 5117 ALX England For AfterSalesService Department Customer Ref Model No Alstom G rid Serial No Contract Ref Date 1 What parameters were in use at the time the fault occured AC Volts Main VT Test set DC Volts Battery Power supply AC current Main CT Test set Frequency 2 Which type of test was being used 3 Were allthe extemalcomponentsfitted where required Yes No Delete asappropriate 4 List the relay settings being used 5 What did you expect to happen continued overleaf 6 What did happen 7 When did the fault occur Instant Y
21. ly mounted relays these dimensions will also be found in Publications R6103 MVAX 11 and R6010 MVAX 12 21 31 and 91 Publication R7012 is a Parts Catalogue and Assembly Instructions This document will be useful when individual relays are to be assembled as a composite rack or panel mounted assembly Publication R6001 is a leaflet on the modular integrated drawout system of protective relays Publication R6014 is a list of recommended suppliers for the pre insulated connectors R80100 Service Manual Page 6 24 MVAX 2 COMMISSIONING 2 1 General Before leaving the factory all relays are accurately adjusted tested and carefully packed Hence there should be no need for any re adjustment on commissioning Moving parts are held in position during transit by rubber bands and packing These should be removed carefully To gain access to the relay first loosen the captive cover screws Then carefully remove the cover from the case The module can then be removed from the case by grasping the handles at the top and bottom of the front plate and pulling forwards Care must be taken to ensure that mechanical settings of the element are not disturbed Carefully remove the rubber band securing the flag mechanism Check that the ends of the push rods are located in the holes in the contact springs Carefully actuate the armature of each unit in turn with a small screwdriver probe Note immediately after the point where any make contacts just cl
22. must be isolated Proper and safe operation of the equipment depends on appropriate shipping and handling proper storage installation and commissioning and on careful operation maintenance and servicing For this reason only qualified personnel may work on oroperate the equipment Qualified personnel are individuals who e Are familiar with the installation commissoning and operation of the equipment and of the system to which it is being connected e Are able to safely perform switching operations in accordance with accepted safety engineering practices and are authorized to energize and de energize equipment and to isolate ground and label it Are trained the care and use of safety apparatus in accordance with safety engineering practices Are trained in emergency procedures first aid The equipment documentation gives instructions for its installation commissioning and operation However the manuals cannot cover all conceivable circumstances or include detailed information on all topics In the event of questions or specific problems do not take any action without proper authorization Contact the appropriate Alstom Grid technical sales office and request the necessary information 3 1 3 2 SYMBOLS AND LABELS ON THE EQUIPMENT For safety reasons the following symbols which may be used on the equipment or referred to in the equipment documentation should be understood before it is installed or commissi
23. nual R80100 MVAX Page 20 24 8 JAN NOILdINOS3Q LOVLNOO STIVNINYSL 310Q0OW OL SLOVLNOD LNdLNO SLOVLNOD LAdLNO JO SNOLLVNIGWOO IVNINY3L SNOT eo 9 390438 AV3Y8 SIVNINYSL LYOHS LOANNOOSIC 330438 0 D SAVW SANIN ONILYOHS 19 ALON Q3M3lA 32018 IWNINYSL 31000NW lNO3J WO Q3M3l INIOVA GSLNNOW LNOYJ c 8c V lNO3J Q3M3l GSLNNOW 3SVO lNO3Jj WO Q3M3IA GSLNNOW P4066ENa MVAX31 trip circuit supervision relay with preclosing supervision Circuit diagram Figure 6 R80100 Service Manual Page 21 24 MVAX 8 NOlLdIlH2OS3Q0 LOVLNOI SIVNINY3L 31000 OL SLOVLNOD LNdLNO SLOVLNOD 1NALNO JO SNOLLWNI8NO9 IVNINY3L 9NO1 9 340439 AV3Y8 SIVNINYAL LYOHS 193NNO9SIO 2 340438 Jr SANIT 9NILMOHS 712 1 14 XA Zw 46 WOY4 OIMIIA INOY4 WOY4 O3MIIA 329018 IWNINYAL 31000W 1NOYW3 SNIOVd Q3LNNON 1NOMJ 1NOYW WOYS OIMIIA ONIOVS Q3LNNOW 1NOYW3 Q3M3lA HLYV3 3SVO ONIOVS GSLNNOW P4067ENa Application diagram MVAX31 trip circuit supervision relay with preclosing supervision Figure 7 Service Manual R80100 MVAX Page 22 24 NMOHS 1N3W3ONVHHV LOVLNOD 3LON SLOVLNOID NYVIV AINO
24. on and the relevant equipment documentation provide full information on safe handling commissioning and testing of this equipment This Safety Section also includes reference to typical equipment label markings The technical data in this Safety Section is typical only see the technical data section of the relevant equipment documentation for data specific to a particularequipment Before camying out any work on the equipment the user AN should be familiar with the contents of this Safety Section and the ratings on the equipment s rating label Reference should be made to the extemal connection diagram before the equipment is installed commissioned orserviced Language specific self adhesive User Interface labels are provided in a bag forsome equipment HEALTH AND SAFETY The information in the Safety Section of the equipment documentation is intended to ensure that equipment is properly installed and handled in order to maintain it in a safe condition It is assumed that everyone who will be associated with the equipment will be familiar with the contents of this Safety Section or the Safety Guide SFTY 4L M When electrical equipment is in operation dangerous voltages will be present in certain parts of the equipment Failure to observe waming notices incomect use or improper use may endanger personnel and equipment and also cause personal injury or physical damage Before working in the terminal strip area the equipment
25. oned Symbols AN Caution referto equipment documentation Caution risk of electric shock Protective Conductor Earth terminal L Functional Protective Conductor Ea rth terminal Note Thissymbol may also be used fora Protective Conductor Earth terminal if that terminal is part of a terminal block or sub assembly e g power supply NOTE THE TERM EARTH USED THRO UG HOUT THIS TEC HNIC AL MANUAL IS THE DIRECT EQUIVALENT O F THE NO RTH AMERICAN TERM GROUND Labels See Safety Guide SFTY 4L M fortypic al equipment labeling information 4 INSTALLING COMMISSIONING AND SERVICING Equipment connections Personnel undertaking installation commissoning or servicing work for this equipment should be aware of the correct working proceduresto ensure safety The equipment documentation should be consulted before installing commissioning or servicing the equipment Terminals exposed during installation commissoning and maintenance may present a hazardous voltage unless the equipment is electrically isolated Any disassembly of the equipment may expose parts at hazardous voltage also electronic parts may be damaged if suitable electrostatic voltage discharge ESD precautions are not taken If there isunlocked accessto the rearof the equipment care should be taken by all personnel to avoid electric shock or energy hazards Voltage and current connections should be made using insulated Crim
26. ose there is a further small movement of the armature This ensures that contact follow through and wiping action is present Repeat similarly with break contacts on armature release On units fitted with hand reset flag indicators check that the flag is free to fall before or just as any make contacts close Replace the module in the case and refit the cover Make sure that the reset mechanism in the cover is correctly located with respect to the relay element and that the flag or mechanism can be reset 2 2 Wiring Check that ratings of the relay agree with the supplies to which it is to be connected Check all wiring connections to the relay including the case earthing connection above the terminal block It is especially important that dc supplies are wired with the correct polarity The relay diagram number appears inside the case 2 3 Insulation The relay and its associated wiring may be insulation tested between a all electrically isolated circuits b all circuits and earth An electronic or brushless insulation tester should be used having a dc voltage not exceeding 1000V Accessible terminals of the same circuit should first be strapped together Deliberate circuit earthing links removed for the tests subsequently must be replaced 2 4 MVAX 11 With MVAX 11 relays check that all wiring complies to the appropriate application diagram to ensure that the relay is wired correctly 2 5 MVAX 12 With MVAX 12 relays che
27. p temninations to ensure that terminal block insulation requirements are maintained for safety Watchdog self monitoring contacts are provided in numerical relays to indicate the health of the device Alstom Grid strongly recommendsthat these contacts are hardwired into the substation s automation system for alarm purposes To ensure that wires are correctly terminated the correct crimp terminal and tool forthe wire size should be used The equipment must be connected in accordance with the appropriate connection diagram Protection Class Equipment Before energizing the equipment it must be earthed using the protective conductorteminal if provided orthe appropriate termination of the supply plug in the case of plug connected equipment protective conductor earth connection must not be removed since the protection against electric shock provided by the equipment would be lost When the protective earth conductorteminal is also used to terminate cable screens etc itisessentialthatthe integrity of the protective earth conductoris checked after the addition or removal of such functional earth connections For M4 stud PCTs the integrity of the protective earth connections should be ensured by use of a locknut or similar The recommended minimum protective conductor earth wire size is 2 5 mm 3 3 mm for North America unless otherwise stated the technical data section of the equipment documen
28. pose hazardous live parts which must not be touched until the electrical power is removed ULand CSA listed or recognized equipment To maintain UL and CSA approvals the equipment should be installed using UL and or CSA listed or recognized parts of the following type connection cables protective fuses fuseholders or circ uit breakers insulation crimp terminals and replacement intemal battery asspecified in the equipment documentation A gt PP pe pe ge Equipment operating conditions The equipment should be operated within the specified electrical and environmental limits Current transformer c irc uits Do not open the secondary circuit of a live CT since the high voltage produced may be lethal to personnel and could damage insulation Generally for safety the secondary of the line CT must be shorted before opening any connectionsto it For most equipment with ring terminal connections the threaded terminal block for current transformer termination has automatic CT shorting on removal of the module Therefore extemal shorting of the CTs may not be required the equipment documentation should be checked to see if thisapplies For equipment with pin terminal connections the threaded terminal block for current transformer termination does NOT have automatic CTshorting on removal of the module Exte mal resistors including voltage dependent resistors VDRs Where extemal resistors including voltage dependent resistors
29. s links Provided there are no parallel paths the resistance should be within 10 of the following MVAX 12 rating range V 24 27 30 34 48 54 110 125 220 250 Relay resistance Ohms 2 710416 1170 2970 10370 33100 No flag hand reset flag contacts 620 1760 7470 23100 4 contacts Relay resistance Ohms 2 590 407 940 2330 8670 27100 No flag hand reverse flag contacts 590 1740 6770 22100 4 contacts Connect a variable dc supply to the isolated circuit ensuring correct polarity is observed Terminal 13 of the relay must be maintained POSITIVE R80100 Service Manual Page 8 24 MVAX Apply 75 of the relay s lower voltage of the voltage rating range Check that the relay operates satisfactorily and that the flag indication can be reset Reduce the voltage slowly until the relay drops off Check that this occurs between 25 to 40 of the lower voltage rating as indicated below V rating range 24 27 30 34 48 54 110 125 220 250 7596 of lower V 18 22 5 36 82 5 165 25 40 of lower V 6 9 6 7 5 12 12 192 275 44 55 88 Replace all links and fuses Check that the relay operates and manually reset the flag With alarm circuits operational temporarily remove a trip supply fuse Check that the appropriate alarms are initiated Replace the fuse and reset the relay flag 2 7 3 MVAX 21 only The following tests assume trip and alarm supply battery volta
30. tation or A A A otherwise required by local or country wiring regulations The protective conductor earth connection must be low inductance and asshort aspossible All connections to the equipment must have a defined potential Connectionsthat are pre wired but not used should preferably be grounded when binary inputs and output rela ys are isolated When binary inputs and output relays are connected to common potential the pre wired but unused connections should be connected to the common potential of the grouped connections Before energizing the equipment the following should be checked Voltage rating polarity rating label equipment documentation CT circuit rating rating label and integrity of connections Protective fuse rating Integrity ofthe protective conductor earth connection where applicable Voltage and current rating of extemal wiring applicable to the application Accidental touc hing of exposed terminals If working an area of restricted space such as a cubicle where there is a risk of electric shock due to accidental touching of terminals which do not comply with IP20 rating then a suitable protective ba mier should be provided Equipment use If the equipment is used in a manner not specified by the manufacturer the protection provided by the equipment may be impaired Removal of the equipment front panel cover Removal of the equipment front panel cover may ex
31. uit breakers trip but ensure that RL1 of the MVAX does not operate RL1 RL2 1 and RL2 2 units are slugged on drop off to prevent mal operation during the transition period Restore any external wiring connections that may have been disturbed during the above tests MVAX 31 with CCT breaker closure inhibit contact The following tests assume trip and alarm battery voltages are equal to the maximum voltage of the relay s voltage rating range For other voltages within the relay s normal voltage rating range tolerance bands for other measured supply voltages should be altered pro rata A table Table 3 of acceptable tolerances for each test is given below Measure the trip supply and alarm supply voltages immediately prior to the tests and note Tests 1 and 2 With the circuit breaker open check the voltage across terminals 13 and 14 ve of the relay This should comply with the voltage tolerance limited given in Table 3 Repeat for terminals 21 and 22 ve of the relay The same voltage limits apply Both these voltages are derived from the trip supply Check the voltage across terminals 27 and 28 ve of the relay This should be within the limits given in Table 3 for the alarm supply Note that the front relay unit RL1 is picked up and reset its flag Test 3 With the circuit breaker closed check that the front relay RL1 remains operated Check that no voltage appears across terminals 21 and 22 of the relay Ensure the volt
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