GE NGV21A Series, Instructions Manual

Page 1: ...INSTRUCTIONS GEI 98326D Insert Booklet GEI 90805 Supersedes GEI 98326C VOLTAGE RELAYS TYPES NGV21A NGV22A NGV23A NGV21B NGV22B NGV23B GENERAL ELECTRIC Courtesy of NationalSwitchgear com ...

Page 2: ... 16 12 u 18 20 o A A A A A A A A A A A A A A A L 4H M RIGHT t FIDDLE 1 V t L R M I h L R 1 v V V V V V V V 1 3 5 9 7 o c o o c 2 6 4 8 10 Figure 1 0203A8587 Internal Connection Diagram for the NGV21A 2 Courtesy of NationalSwitchgear com ...

Page 3: ...USTMENT 69 45 69 120 120 80 165 100 165 208 121 173 240 160 240 The dropout voltage is 90 or more of pickup voltage The outline and panel drilling for types NGV21A NGV21B NGV22A and NGV22B is shown in Figure 10 of GEI 90805 The outline and panel d r i l l i n g for types NGV23A and NGV23B is shown in Figure 11 of GEI 90805 Revised since last issue These instructions do not purport to cover all det...

Page 4: ...0 o k A A A A A A A A A A A A A A A L M R T T T YJ L s 3G M i R x r L 7f L M T 8 R MIDDLE X I T V v y v V V V V V V V V o 3 5 9 7 o o o o o 6 2 8 4 10 0195A9I33 Internal Figure 2 Connection Diagram for the NGV21B 4 Courtesy of NationalSwitchgear com ...

Page 5: ...0 o o o A A A A A A A A A A A A A A A L R i i V LSFT RIGHT ft A K R 1 1 1 t t L R L R V V f V f V A V V y V V y O O o 9 3 1 5 0 o o o 2 4 6 10 Figure 3 0165A6092 Internal Connection Diagram for the NGV22A 5 Courtesy of NationalSwitchgear com ...

Page 6: ...4 12 o o o o A A A A A A A A A A A A A A A A L R T LEFT RIGHT y M i L R I T L R R V 1 V V y V l 1 V V V V V V o o o o 3 1 5 9 9 o o o 4 6 10 Figure 4 0226A6941 Internal Connection Diagram for the NGV22B 6 Courtesy of NationalSwitchgear com ...

Page 7: ...Cl WHEN USED 1 V z 7 L N y y y y y y y y v V V V V V v 1 3 5 7 9 o o o o o 2 4 6 8 10 SHORT FINGER Figure 5 0195A4940 4 Internal Connection Diagram for the NGV23A Revised since last issue 7 Courtesy of NationalSwitchgear com ...

Page 8: ...10 8 6 2 4 SHORT FINGER Figure 6 0203A8591 Internal Connection Diagram for the NGV23B Meter and Control Business Department General Electric Company Protection and Control 205 Great Valley Parkway Malvern Pennsylvania 19355 0715 BC 4 96 250 Courtesy of NationalSwitchgear com ...

Page 9: ... Forms 11 and up NGV11B Forms 11 and up NGV12A Forms 11 and up NGV12B Forms 11 and up NGV12C Forms 11 and up NGV13A Forms 21 and up NGV13B Forms 21 and up GE Meter and Control 205 Great Valley Parkway Malvern PA 19355 0715 Courtesy of NationalSwitchgear com ...

Page 10: ... BEFORE ENGAGING THE MAIN BRUSH ON THE TERMINAL BLOCK Figure 1 8025039 Cross Section of Drawout Case Showing Position of Auxiliary Brush a bfc SR CONTACTS Snu I ri FRAME OPERATING ARM ARMATURE RESIDUAL SCREW LOCKNUT POLE PIECE m p l u Ei HEELEND OPERATING ARM STOP COiL Figure 2 8012106 Typical Telephone Type Unit Used in NGV Relays 2 Courtesy of NationalSwitchgear com ...

Page 11: ...cted 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 Instantaneous undervoltage detection for preferred emergency throwover control equipment 1 Ground fault detection for faulted phase selection on ungrounded systems Phase fault detection for disabling telepho...

Page 12: ...rruption Capability Amps Inductive Volts 48 DC 125 DC 250 DC 115 60 cycles 230 60 cycles 1 0 0 5 0 25 0 75 0 5 Inductance of average trip coil ratings for repetitive protective duty are approxi mately 2 1 2 times ratings shown in the table The non inductive CHARACTERISTICS The NGV voltage unit is a hinged armature unit which drops out when the magnetic pull created by the ampere turns in the opera...

Page 13: ...ing 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 have been inserted ...

Page 14: ...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 contact by deflecting the stationary contact member towards the frame Wipe should be approximately 0 005 inch The wipe on eac...

Page 15: ...rface 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 in stock for prompt replacement of any parts that become worn broken or damaged When ...

Page 16: ...o 2 6 4 8 10 Figure 4 0195A4939 2 Internal Connections Diagram for the NGV11B Relay Front View 19 n 13 15 o O O Q 20 12 U 16 A v A A A A A A A A A L R t LEFT y L Rj RIGHT A L R I V v Ni V V y V y v V y O 3 5 9 6 o c 1C 2 6 4 Figure 5 0178A9182 1 Internal Connections Diagram for the NGV12A Relay Front View 8 Courtesy of NationalSwitchgear com ...

Page 17: ...c o C ic 2 Figure 6 0195A4956 1 Internal Connections Diagram for the NGV12B Relay Front View a WHEN USED Cl WHEN USED 1 J J V v V V V V 1 5 7 9 O O o o o 2 4 6 8 10 SHORT FINGER Figure 7 0195A4940 4 Internal Connections Diagram for the NGV13A Relay Front View 9 Courtesy of NationalSwitchgear com ...

Page 18: ...INKS SHOWN WITH TARGET IN CIRCUIT 1 2 A e lO vQ O E F T 1 1 1 V V V V V V V J V v V V v 3 6 5 7 6 9 o o o 2 4 6 8 10 OTHER LINK POSITIONS A _ B C o c or A B Q SO c WITH TARGET Q C vO 1 1 0J NO TARGET IN CIRCUIT IN CIRCUIT 3 4 FRONT VIEW SHORT FINGERS Figure 8A 0275A4380 1 Internal Connections Diagram for the NGV13B Revision A Relay Front View 10 Courtesy of NationalSwitchgear com ...

Page 19: ...Ti tQ c MINIMUM s 60 D D 0 CALIBRATION i z o O c_n 50 j en CT y 7 O O 2 P7 I o no y Ol O 40 a CD T a m s Q zz rt 1 CO o ZJ CO tn A o cn hAAXtfAOM 30 i 3 D O fD CALIBRATION 7 y o 7 c s X 3 a oo 20 h O CD 70 10 ro Oi oo 0 80 100 50 90 70 20 30 40 60 10 ...

Page 20: ...27MM 5 8 DRILL 2 HDLES 15MM 2 781 7 1MM J 1 75 46MM 1 L i i 3 50 88MM I 1 9 75 247MM 5 562 1 42MM CUThUT 1 1 0 0 0 0 254MM I 4 50 I 114MM f I i o o 1 468 37MM J f 718 18MM 250 2 843 72MM 6MM 218 218 500 12MM TYPICAL 5MM 5 25 5MM i i 5 687 133MM PANEL 144MM 3 4 DRILL 20 HDLES 19MM 11 PANEL DRILLING FDR SURFACE MOUNTING FRDNT VIEW PANEL DRILLING FDR SEMI FLUSH MOUNTING FRDNT VIEW MB CA 5 16 18 STUD ...

Page 21: ... I 3 0 t r CUTdUT 76MM t I 4 3 7 5 3 1 1MM 8 8 1 2 223MM T I 3 9 06 99MM i 4 2 8 1 1 08MM i I i 0 O 1 4 6 8 37MM i f 7 1 8 18MM 2 5 0 __ 2 8 4 3 72MM 6MM I 2 1 8 5MM PANEL 2 1 8 5 0 0 12MM T Y P I C A L 5 2 5 5MM 1 5 6 8 7 1 4 4MM 133MM 3 4 DRILL 10 HOLES 19MM PANEL DRILLING EOR SEMI FLUSH MOUNTING FRDNT VIEW PANEL DRILLING FOR SURFACE MOUNTING FRONT V I E W 5 1 6 1 8 STUD 3 0 76MM V I E W SHOWING...

Page 22: ...EFT RIGHT 1 fR V A R A R R V V y y V y y y y V V V V V V V V 0 O O 1 3 5 7 9 O O o o o 2 6 4 10 8 SHORT TIN ER 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 14 Courtesy of NationalSwitchgear com ...

Page 23: ...Courtesy of NationalSwitchgear com ...

Page 24: ...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 ...