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Mitsubishi Electric MELPRO MVG-A3V-R, Instruction Manual

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Mitsubishi Electric MELPRO MVG-A3V-R Instruction Manual Download Page 15

15

                                     

   

JEP0-IL9558

 

 

1.  Procedure of drawing out

 

 

 

Drawer fixing screw

 

 

 

①

 

Open  the  cover  and  remove  the 
drawer fixing screw. 

②

 

Close the cover and pull out the 
subunit  with  your  finger  hooked 
on  the  drawer  handle  on  both 
sides. 

③

 

Support the frame of subunit and 
pull out. 

 

2.  Procedure of housing 

 

 

 

 

Drawer fixing screw

 

①

 

Support the frame of subunit and 
place  the  subunit  in  the  case 
along the rails. 

②

 

Insert the subunit into the case 
horizontally. 

③

 

Open  the  cover  and  tighten  the 
drawer fixing screw. 

 

 

 

 

 

 

 

Cover 

Cover 

Summary of Contents for MELPRO MVG-A3V-R

Page 1: ...1 JEP0 IL9558 Request Ensure that this Instruction Manual is delivered to the end users and the maintenance manager ...

Page 2: ...t Failure to do so may lead to the risk of electric shock equipment failure malfunction or failure to operate Ensure that the equipment is connected correctly in accordance with the details e g polarity or phase sequence shown on the connection terminals Otherwise there is the risk of failure burning malfunction or maloperation All power supplies and transformers to the equipment must be of suitab...

Page 3: ...el Otherwise there are risks of electric shock injury failure malfunction and maloperation Handling and maintenance of the equipment must only be carried out after gaining a thorough understanding of the instruction manual Otherwise there is the risk of electric shock injury failure malfunction or maloperation When replacing the equipment use a product of same model rating and specifications Other...

Page 4: ... special damages and secondary damages whether foreseeable or not compensation for accidents and compensation for damages to products other than MITSUBISHI ELECTRIC CORPORATION products and other tasks 4 Applications of products 1 The user is requested to confirm the standards the regulations and the restrictions which should be applied in case of utilizing this product and another one in combinat...

Page 5: ...ecommended to replace 2 Product supply including repair parts is not available after production is discontinued 6 Changes in product specification The specification given in the catalogue manuals or technical documents are subject to change without prior notice 7 Scope of service The technical service fee such as engineer dispatching fee is excluded in the price of our products Please contact to o...

Page 6: ...set SW2 OFF Display Self monitoring The RUN indicator green color is lighted in normal condition Operation indicator The indicator turns from black into orange color when the protection element is put into operation Manual resetting type Numerical display 1 Lo means LOCK setting the protection element is locked 2 In is the display for instantaneous setting Indication item Range V0 measurement 1 0 ...

Page 7: ... power supply AC90V AC120V Criteria Within 10 of operation value at rated voltage Temperature characteristics Setting Operation value Minimum Operating time Minimum Operation value at ambient temperature of 0 40 Within 5 of the value at 20 Operation value at ambient temperature of 20 60 Within 10 of the value at 20 Operating time Within 20 of operating time at 20 Vibration Frequency Hz Peak to pea...

Page 8: ...xiliary power supply V0 0 Criteria No malfunction Radio disturbance Intermittently irradiate radio waves to the front panel of the relay with a transceiver of 150MHz or 400MHz band 5W output from a distance of 0 5m Setting Minimum operation value and minimum operating time Input Rated auxiliary power supply V0 0 Criteria No malfunction Contact capacity Making Closing DC110V 15A L R 0ms DC220V 10A ...

Page 9: ...d operation test Indicator select switch The numerical display shows according to this selection switch Don t leave this switch with halfway state Operation indicator The indicator turns from black into orange color when the protection element is put into operation Operation indicator reset lever Move this lever up and down then the operation indicator resets Note Don t pull the lever strongly Set...

Page 10: ...isplayed Here 100 denotes complete single phase fault in 6 6kV power systems V0 primary 3810V ZVT secondary 7V This function makes it possible to measure the residual V0 voltage in sound condition Pickup When input zero sequence voltage is greater than or equal to the setting value Ｕ is displayed This function can be used for operation value tests Setting value It displays the setting condition of...

Page 11: ...tacts between DGR and OVGR are AND sequence circuits It is also possible to use each relay individually Voltage tripping coil 52a Pallet switch MDG A3V DGR AC100 110V P1 Z1 Z2 P2 Y1 Y2 a12 a11 CB ED MVG A3V OVGR a21 Y1 a11 a12 P1 P2 Y1 To alarm circuit BP Auxiliary power supply BN MZT type ZCT K k L ℓ MPD 3 type ZVT a22 Y2 Y2 ED E ED EA E ...

Page 12: ... V0 when turning on the relay power supply Test A relay test is carried out sufficiently before shipment but at the following cases it is recommended the test should be carried out again a When the products are delivered and unpacked b At the time of starting operation of equipment c At the time of periodic inspection Usually once a year 1 At the time of testing The input waveform should be a sine...

Page 13: ...adjusted an accurate test is possible By turning the indicator select switch to TEST and pushing TEST button for 2 seconds or more output contact can be forced to operate except for the case of LOCK setting 4 Operation characteristic control point Perform the test periodically according to the following test conditions and criteria Test item Test condition Criteria Input Operation value Operating ...

Page 14: ...the drawer handle or the frame part when transporting Touching the electrical circuit may cause electric shock or damage to the circuit Before the subunit is to be drawn out ensure that the following items are checked in order not to carry out the work in hot line condition Lock of the tripping circuit Turning off the main circuit Disconnect CT VT circuit Turning off the auxiliary power supply The...

Page 15: ...the subunit with your finger hooked on the drawer handle on both sides Support the frame of subunit and pull out 2 Procedure of housing Drawer fixing screw Support the frame of subunit and place the subunit in the case along the rails Insert the subunit into the case horizontally Open the cover and tighten the drawer fixing screw Cover Cover ...

Page 16: ...up the upper side of the cover from the inner surface Then remove from the protrusion of the body Installing the cover As shown in Fig 6 7 mount the holes on the upper side of the cover to the protrusion of the body Then press down lightly on the lower side of the cover and mount to the protrusion of the body in the same way as above When replacing the cover during operation be careful not to touc...

Page 17: ...ed to the protection relay have limited lifetime which will bring the degradation to the relay The degree of degradation will be variable depending on the purpose aging usage environment and unevenness on the performance of each part Our company designs its products so that the recommended renewal period is 15 years or more However there may be some possibilities to occur any failures before reach...

Page 18: ...HEAD OFFICE 7 3 MARUNOUCHI 2 CHOME CHIYODA KU TOKYO 100 8310 JAPAN First edition Mar 2021 ...

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