Westinghouse D48-F, D4B-2F, D4B-3F, D4B-7F, D48-SF Скачать руководство пользователя страница 2 | Manualshive

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Westinghouse D48-F, D4B-2F, D4B-3F, D4B-7F, D48-SF Скачать руководство пользователя страница 2

TYPE 048 FLEXITEST SWITCHBOARD METERS

I. L. 42-227

Balance Adjuster

Light Load Adjuster

FT-21 Case

WARNING

To avoid bodily injury and/or propert y damage, it is recommended
that installation, testing, and servicing be done only by authorized

personnel using appropriate installation procedures.

GENE RAL

The meter elements are mounted on a removable chassis,

which is held in the case by two latches. All connections

between the case and the chassis are made through the

test switches.

CAUTION

Automatic shorting switches are provided on all current cir·

cuits to prevent opening current transformers when testing
or removing the chassis to avoid electrical shock or bodily·
injury.

For testing, leads can be clipped to the test lugs above the

chassis jaws and on the switch blades.

All  rotors  are  supported  by  a  maintenance-free  Magne
thrust  bearing  system  and  include  a  pinion  for  operating
gear-driven  pulse initiators.

Two test plugs are available to facilitate calibration of these

meters. A 10-circuit plug is inserted into the chassis jaws

and is provided with binding post terminals for connections
to the test circuit. Current measurements are made by

connecting ammeters to a current circuit test plug, which is

then inserted into the current switcn assembly, between the
chassis and the case.

1

D4B-7F Chassis

The  hardware  supplied  with  the  meter  permits  semi-flush
mounting  on  panels  up  to  3/16  inch  thick.  For  projection
mounting  on  panels  thicker  than  3/16  inch,  special  hard·
ware  is  furnished  upon  request  (specify  panel  thickness).

Provisions have been made on all FT-21 cases for con

venient field installation of either 2- or 3-wire pulse

m1t1ators.

Removal of three knockouts (located in the

back of the case near the top) will permit installation of

an output terminal block and pin assembly.

A mating

bracket

dnd

socket

assembly is then attached to the

meter frame and latch assembly.

The output circuits

will be closed by inserting the meter frame and latch

assembly into the case. All necessary parts are available in
kit form for each type of pulse initiator.

CA LIB RATION

All meters have been factory tested before shipment. For

single stator meters, the full load test speed is 16-2/3 rpm,

and  the  watthour  constant  is  0.6  per  nominal  600-watt
rating  (constant  of  7.2  for  30  amp,  240  volt  meter).  For
two-stator  meters,  the  full  load  test  speed  is  8-1/3  rpm,
and  the  watthour  constant  is  1.2  per  nominal  300-watt
rating.  For  three-stator  meters,  the  full  load  test  speed  is

8-1/3 rpm, and the watthour constant is 1.8 per nominal
300-watt rating.

Full Load

Single stator sensitivity is approximately 1.3 percent per
turn.

Two- and three-stator sensitivity is approximately

1.2 percent per turn.

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Содержание D48-F, D4B-2F, D4B-3F, D4B-7F, D48-SF

Страница 1: ...elta D4B 8F 2 Split Coil 3 Phase 4 Wire Wye All possible contingencies which may arise during installation operation or maintenance and all details and variations of this equipment do not purport to be covered by these instructions If further information is desired by purchaser regarding his particular installation operation or maintenance of his equipment the local Westinghouse Electric Corporati...

Страница 2: ...chassis and the case 1 D4B 7F Chassis The hardware supplied with the meter permits semi flush mounting on panels up to 3 16 inch thick For projection mounting on panels thicker than 3 16 inch special hard ware is furnished upon request specify panel thickness Provisions have been made on all FT 21 cases for con venient field installation of either 2 or 3 wire pulse m1t1ators Removal of three knock...

Страница 3: ...ate full load unity power factor to 100 percent registration by turning I L 42 227 the Full Load adjuster screw at the front of the meter Calibrate full load 50 percent lagging power factor to 1CO percent registration by turning the Power Factor adjuster screw on the rear stato1 adjuster bracket from the right side Energize the remaining two stators one at a time Calibrate full load unity power fa...

Страница 4: ...1 20 1 20 3 Wire Coil Each Half Watts Loss Volt Amps Mounting of FT 21 Case case dirnenslc PS p J nel cutout d1rncn Jons D4B 3F 2 5 Amps 120Volt 4 50 8 1 3 1 80 6 40 0 95 0 14 0 30 1 20 front view siJe VlCW sern1 flush prOJCCtton FT 21 I 4 5141 r lt 2B 2B r J 10 Circuit plug for test See Page I Order from Newark Relay as Style 1164046 Current circuit test plug See Page I Order from Newark Relay as...

Страница 5: ...N IIKNAL CHASStS iClltRt HT TOT I L J _ 10 4 9 l VOLTAGE TRANSFORMER CONNECTION BELOW Fig 3 Type 048 2 F 3 Phase 3 Wire I L 42 227 CIRCUIT CLOSifiiiG OEviCE cuRNENT TE T loi CIC OhtAHO IIIQTOf 8 lllt ACTOR WI H USE O 0A INTERNAL POW 111 SUPP _Y NOTE CIRQJIT CLOSING SWITCHES OPERAT O IY t ST WITCI1 HAND 8 ALSO 8T R MOIAlL 01 CHAS S EliTERNAL JI MPERS _ POTENTIAL TRANSFORMER CONNECTION BELOW L JI F ...

Страница 6: ...7 F 3 Phase 4 Wire Delta 0 Meter i L I I I I I I JtC T V P iOSING I I I L 42 227 T CIRCUIT CLOSING SWITCHES OPERATED BY TEST SWITCH HANDLE a _SO 8T R IIOVAL C7 CHASSIS 1fT RNAL JUMPERS 9 7 5 NEuTRAl VOLTAGE TRANSFORMER CONNECTION BELOW k t J_J 3 r REAR VIEW Fig 6 Type D48 7 F 3 Phase 4 Wire Delta CIIICllT Q OSIIIG Q yiC VOLTAGE TRANSFOAMER id COIIHECTION BELOW f r VIEW Fig 8 Type D48 2F 3 Phase 4 ...

Страница 7: ...E CIM I MT Cl OIM SWITCHE I OP 1U Tf D IT T H SWITCH HANOI a AlSO IY REMOVAL Of CHaa Fig 11 Type D4B 3F 3 Phase 4 WireWye 0 Meter Dt o J 4 WIM WY OM ftl fO IUT oo ll OIIr I Z J u Ulh c u 4 1 l Jio90 6 J 2 J A OuTICII 0 we 01 1 r a I i L x o o I r _ __ AC _ __ r rt I I I lO I I I i1 I i j H Cru r OI ooc I I i I hiO ___ JI I 7 I J j f I 4 i i 4 1 lo I o _ _j t f t e 0 I 0 0 IKMWIOf Fig 10 Type D4B 3...

Страница 8: ...lJI T CLOSINI S ITCHfl O f ATIO IY T IT IWtTCH HANOL e _SO IY llt WOYAL OFCHAit Fig 1 4 Type D4B 8F 3 Phase 4 WireWye withPhase Shifting Transformer I O t IAND WOTOR WH H USED 0R IIHERNAL POW R SUPPLY IO T CIRCUtr CLOSINOI SWITCtt S OPfRATEO BY TtST WITCH HANOL a ALSO eY REMOVAL Of CHASSIS Fig 15 Type D4B 8F 3 Phase 4 WireWye 0 Meter Westinghouse Electric Corporation Meter And Low Voltage Instrume...

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