GE 12NGV28A Instructions Manual Download Page 1 | Manualshive

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Summary of Contents for 12NGV28A

Page 1: ...is supplement is the internal connections diagram for this for the S2 Figure 2 of case this suplenient gives the outline and panel drilling dimensions POWER SYSTEMS MANAGEMENT DEPARTMENT GENERALS ELECTRIC PNILAIELPRIA PA 7iesc instructions do not purport to cover all details or variations in equipment nor to provide for as i pussibJ ciintinqoncq to be met in connection with installation operation ...

Page 2: ...T v v GEK 45498 5 FIG 1 269A3034 0 INTERNAL CONNECTIONS DIAGRAM FOR THE NGV28B A RELAY R O 0 3 0 7 RI R2 G CI FORM OHMS OHMS OHMS Mfd I 1K 5K 1 3K 05 0 9 SHORT 0o FINGER 2 ...

Page 3: ...C LU J C C C J C LU J J J LU NV T v LU _LJ L__ ___ __ D LU ii H JV Zt LI L ioó 6 LU LI r k In rj V1 J 0 UJLIL L QLf LI LU J 0 DJw Olj Dc L Lii z J H D 0 2 LLI LU z L QJ _ 0 1 J 00 z T oI 00 0 0 nQ r 0 o LI C LI 0 LU LU 0 ZZ 2 z L2QW J ojz LU LI LU j C z I1 ...

Page 4: ...GE Power Management 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 wwwge comlindsyslpm ...

Page 5: ...HGV12A NGV12B NGV12C NGV13A NGV13B Forms Forms Forms Forms Forms Forms Forms 11 and up 11 and up 11 and up 11 and up 11 and up 21 and up 21 and up UNDERVOLTAGE RELAYS TYPES GE Meter and Control 205 Great Valley Parkway Malvern PA 19355 07 15 ...

Page 6: ...CONNECTING PLUG TRAVELS 1 4 INCH BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK Figure 1 8025039 Cross Section of Drawout Case Showing Position of Auxiliary Brush FRAME OPERATING k ARM ARMATURE RESIDUAL SCREW LOCKNUT II HEELEND OPERATINGARMSTOP COIL POLEPIECE Figure 2 8012106 Typical Telephone Type Unit Used in NGV Relays N TAG TS 2 ...

Page 7: ...of the relay are depicted in Figures 10 and 11 APPLICATION The NGV relay is intended for general application wherever instantaneous detection of undervoltage is required Some specific applications are listed below 1 Instantaneous undervoltage detection for preferred emergency throwover control equipment 2 Ground fault detection for faulted phase selection on ungrounded systems 3 Phase fault detect...

Page 8: ...RRUPTING ABILITY Interruption Capabilit Volts Amps Inductive 48 DC 1 0 125 DC 0 5 250 DC 0 25 115 60 cycles 0 75 230 60 cycles 0 5 Inductance of average trip coil The non inductive ratings for repetitive protective duty are approxi mately 2 1 2 times ratings shown in the table CHARACTERISTICS The NGV voltage unit is a hinged armature unit which drops out when the magnetic pull created by the amper...

Page 9: ...nnect it by removing the connection plug that completes the electrical connections between the case block and the cradle block This connection block can be replaced by a test plug to test the relay in its case The cover which is attached to the front of the relay case contains the target reset mechanism and an interlock arm which prevents the cover from being replaced until the connection plugs ha...

Page 10: ...N MECHANICAL CHECK Check the relay for mechanical operation before installation to see that it operates smoothly and that the contacts are correctly adjusted With the relay de energized each normally open contact should have a gap of 0 015 inch or more Observe the wipe on each normally closed contacL by deflecting the stationary contact member towards the frame Wipe should be approximately 0 005 i...

Page 11: ... that will remove corroded material quickly and thoroughly without scratching the surface The flexibility of the tool insures the cleaning of the actual points of contact Knives files abrasive paper or cloth should never be used to clean fine silver contacts The burnishing tool described above can be obtained from the factory RENEWAL PARTS Sufficient quantities of renewal parts should be carried I...

Page 12: ...TR GEE 90805 I 9 In i I j Figure 4 0195A4939 2 Internal Connections Diagram for the NGV11B Relay Front View Q ii I I 1 S Figure 5 0118A9182 1 Internal Connections Diagram for the NGV12A Relay Front View 8 ...

Page 13: ... 1 Internal Connections Diagram for the NGV12B Relay Front View 1 w Figure 7 0195A4940 4 Internal Connections Diagram for the NGV13A Relay Front View GE 1 90805 1 1 i 4 I V V CI WHEN US ED MIEN USED F r 6 ShF F FINGER 9 ...

Page 14: ...the NGV13B Relay Front View LINKS SHOWN WITH TARGET IN CIRCUIT 1 2 2 4 6 8 10 OTHER LINK A_ B C D E 0 F WITH TARGET IN CIRCUIT 4 POSITIONS A B C NC TARGET IN CIRCUIT HORT HNGERE F RON VIEW Figure 8A 0275M380 1 Internal Connections Diagram for the NGV13B Revision A Relay Front View 10 ...

Page 15: ...GE 1 90805 Figure 9 0165A7560 2 Operating Time Curves for NGV Relays C 0 0 Cr C 0 4 11 ...

Page 16: ...or Drawout Relays Size S2 Case 6 625 168MM PANEL LOCATION SEMI FLUSH zc 5 16 18 STUDS SURFACE MTG 10 312 261 MM 19 17 15 13 11 00000 00000 20 18 16 14 12 0 32 X 3 8 S RE V S GLASS 1 4 DRILL STUD NUMBER INC 29MM 97531 00000 00000 10 8 6 4 2 BACK VIEW CUTOUTS MAY REPLACE DRILLED HOLES CUT1UT 218 5MM 144MM 500 12MM TYPICAL TYPICAL DIM 19MM INCHES MM PANEL DRILLING FOR SURFACE MOUNTING FRONT VIEW 12 ...

Page 17: ... Dimensions for Drawout Relays Size Si Case _ 6625 168MM PANEL LOCATION SEMI FLUSH HTG 2 5 16 18 STUDS FOR SURFACE MTG MTG 8 375 212MM GLASS 1 3 L5 4 11 1 4 1 0 32 S LiDS DRILL 125 29MM STUD NUMBERING 6 187 157MM 97531 00000 0000 086 2 BACK VIEW 5 8 DRILL 2 HOLES L C U T1 UT CUTOUT MAY REPLACE DRILLED HOLES 8 812 22 3MM 1 15E 29MM 2 843 72MM 5 687 144MM 5 25 133MM 500 12MM TYPICAL 1 9MM TYPICAL DI...

Page 18: ...HNGER Figure 12 0178A7107 1 Internal Connections Diagram for the NGV12C A Relay Since the last edition the first paragraph of SERVICING and Figure 10 have been revised 1 3 1f L 14 T A I 17 19 18 20 CI Q HLI tR i 6 8 14 ...

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Page 20: ...GE Power Management 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 wwwge comlindsyslpm ...

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