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GEH-15398

Types AB

and

DB Ammeters

and

Voltmeters

FRONT

SIDE

PANEL

STUD

f-zeTHD

*PRESENT ONLY ON A-C VOLTMETERS (EXCEPT EXPANDED SCALE)

RATED

150

VOLTS OR BELOW

�·

NOTE

THE LETTERS NEXT TO THE

TERMINAL  STUDS  ARE  FOR  PURPOSES
OF  DIMENSIONAL  LOCATION  ONLY  FOR
CONNECTIONS,  SEE  THE  APPROPRIATE

EXTERNAL CONNECTION DIAGRA M.

STUD

DIMENSIONS

INSTRUMENT

LOCATION

D-e Ammeter

3 11/32"

2 31 /32"

D-e Voltmeter

3 11/32"

2 31 /32"

D-e Ground Detector

3 11/32"

2 31 /32"

A-c Ammeter

4 1/4"

3 7/8"

A-c Ammeter {double-rated)

4 1 /4"

3 7/8"

A-c Voltmeter

4 1/4"

3 7/8"

Voltmeter (expanded-s cale)

11 /16"

S S/16"

Fig. 8. Dimensions of Types AB-18 and DB-18 ammeters, voltmeters,

and ground detectors.

FRO N T

SIDE

NAMEPLATE

RHEOSTAT

USE  AS  GROUNDING  STUD  IN
AC CORDANCE  WITH  EXTERNAL
CONNECTION  DIAGRAM

Fig. 9. Dimensions of Type DB-18 ammeter s with rheostat fo r lead-length compensation.

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Содержание AB Series

Страница 1: ...RUCTIONS GEH 15398 Supmedes GEH 1539A TYPES AB AND DB AMMETERS AND VOLTMETERS 150 GENERAL ELECTRIC w w w E l e c t r i c a l P a r t M a n u a l s c o m w w w E l e c t r i c a l P a r t M a n u a l s c o m ...

Страница 2: ...nd DB 10 ammeters and voltmeters and DB 10 ground dete ctors PANEL SIDE MOUNTING STUD f 28 THO BACK 3 32 t PRESENT ON VOLTMETERS ONLY GROUNDING STUD 6 40 TAP FIG 2 DIMENSIONS OF TYPES AB 12 AND 13 AND TYPES D B 12 MID 3 AMMETERS VOLTMETERS AND GROUND DETECTORS STUD INSTRUMENT LOCATION D e Ammeters CD D c Voltmeters AB D e Ground Detector CD A c Ammeters AB A c Voltmeters AB 3 3 3 4 4 3 DIA 1 32 NO...

Страница 3: ...ment nameplate A C VOLTMETERS When the circuit exceeds 750 volts a potential transformer of the ratio indicated on the instrument nameplate must be used The transformer must have a frequency rating which corresponds to that on the instrument nameplate An external Form 3 resistor must be used when so indicated on the instrument nameplate The table below gives the number of tubes in the resistor sup...

Страница 4: ...er across the shunt end of the leads shunt disconnected and the instrument across the opposite end Apply a low adjustable d e voltage across the shunt end of the leads and adjust this voltage until the indication on the standard millivoltmeter agrees with the full 4 scale millivolts marked FULL SCALE MV on the instrument nameplate Loosen the lock nut located under the nameplate and turn the rheost...

Страница 5: ...PERATION The d e instruments utilize a permanent magnet moving coil mechanism adapted for the longscale in strument design Current passing through the mov ing coil produces a magnetic field which interacts with the field produced by the permanent magnet thus supplying the deflecting torque The moving system deflects until counterbalanced by the instru ment control springs The a c instruments excep...

Страница 6: ...NT LOCATION X y D e Ammeters CD 3 9 16 2 31 32 D e Voltmeters AB 3 9 16 2 31 32 D e Ground Detector CD 3 9 16 2 31 32 A c Ammeters AB 4 15 32 3 7 8 A c Voltmeters AB 4 15 32 3 7 8 A c Voltmeters expanded scale AB 5 29 32 5 5 16 Fig 4 D1mens1ons of Types AB 1 4 1 5 and 19 and Types DB 1 4 15 and 1 9 ammeters and voltme ters and g round dete ctors FRONT SIDE MOUNTING PANEL STUD f zs THO 1 c I I 15 1...

Страница 7: ... BELOW FRONT STUD DIMENSIONS INSTRUMENT LOCATION X y D e Ammeter CD 3 5 16 2 27 32 D e Vo tm ter AB 3 5 16 2 27 32 D e Ground Detector CD 3 5l16 2 27 32 A c Ammeter AB 4 7 32 3 3 4 A c Ammeter double rated AB EF 4 7 32 3 3 4 A c Voltmeter AB 4 7 32 3 3 4 A c Voltmeter expanded scale AB 5 21 32 3 3 16 Fig 6 Dimensions of Types AB 16 and DB 16 ammeters voltmeters and ground detectors SIDf BAC 1 f l ...

Страница 8: ...oltmeter AB 3 11 32 2 31 32 D e Ground Detector CD 3 11 32 2 31 32 A c Ammeter AB 4 1 4 3 7 8 A c Ammeter double rated AB EF 4 1 4 3 7 8 A c Voltmeter AB 4 1 4 3 7 8 A c Voltmeter expanded scale AB s 11 16 S S 16 Fig 8 Dimensions of Types AB 18 and DB 18 ammeters voltmeters and ground detectors FRON T SIDE 9 1 6 L 1 NAMEPLATE RHEOSTAT 332 32 USE AS GROUNDING STUD IN ACCORDANCE WITH EXTERNAL CONNEC...

Страница 9: ...th external shunt SOURCE FUSES Fig 18 D e voltmeter ra ted above 750 volts with external resistor SOURCE LOW HIGH LOAD Fig 15 Low range on double rated d e ammeter FUSES L 0 AO Fig 19 Double rated d e voltmete r illustrating use of swit ch to sele ct range SOURCE Fig 16 High range on double rated d e ammeter SOURCE F SES LOAD Fig 19a D e ground de te ctor for voltages up to and in cluding 750 volt...

Страница 10: ...OURCE Fig 24 High range an double rate d a c ammete r SOURCE LOAD Fig 27 A c v o Itm e t e r Types AB 10 12 and 1 3 only with potential tran s former SOURCE Fig 22 A c a m m e t e r Types AB 14 15 16 1 8 and 19 only with current transformer SOURCE FUSES I LOAD Fiy 25 Self contained a voltmete r SOURCE FUSES H1 X1 sn LOAD Fig 28 A c v o It m e t e r Types AB 14 15 16 18 and 19 only with poten tial ...

Страница 11: ...i 3 8000 c 15 6 13 10 1g 6 A2 3 i 3 10000 c 17X 8 15 i 12 5 3 J l 1 v 2 2 2 3 Y Y K J i J i J i A A 2 3 i l 1 l 1 Jl 2 L J i J i J i A A 3 i l1 23 12 v X X u u u u I Connection Stripe Each End 1 1 1 I I I I 1 1 I 1 2 2 3 3 4 4 5 5 5 7 7 For current values above 10 000 amp the best arrangement is to use two or more shunts in parallel with a separate set of leads for each shunt The Form 15 shunts fo...

Страница 12: ...Ore Cascade B dg 1170 Pearl St Evansville 19 Ind 123 N W Fourth St Fairmont W Yo 310 Jacobs Bldg P O Box 1626 Fergus Falls Minn I 08N Court Ave P O Box 197 Flint 3 Mich 653 S Saginaw St Fort Wayne 6 Ind 3606 So Calhoun St Fort Worth 2 Tex 408 W Seventh St Fort Worth Tex Fresno 1 Calif Grand Rapids 2 Mich Greensboro N C Greenville S C Gulfport Miss Hagerstown Md Hartford 5 Conn Houston 1 Te x os In...

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