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VOLTAGE AND FREOUENCY SENSING
A .
CLOSE DIFFERENTIAL VOLTAGE SENSING ON ALL PHASES
OF NORMAL SOURCE . P ICKUP VOLTAGE IS ADJUSTABLE FROM
85Y.
TO 1 00Y. OF NOMINAL AND THE DROPOUT IS ADJUSTABLE
FROM 75Y. TO
98Y.
OF THE PICKUP VALUE . FACTORY SET TO
P ICKUP AT
90%
AND DROPOUT AT
85Y.
OF NOMINAL
UNLESS OTHERWISE SPECIFIED .
STANDARD FEATURE
46 .
B . SINGLE PHASE VOLTAGE SENSING OF EMERGENCY SOURCE .
PICKUP ADJUSTABLE FROM
85%
TO
1 00%
OF NOMINAL .
FACTORY SET TO PICKUP AT
90%
UNLESS OTHERWISE
SPECIFIED .
C . FREQUENCY SENSING OF EMERGENCY SOURCE . PICKUP
AD0USTABLE FROM
90%
TO
1 00Y.
OF NOMINAL . FACTORY
SET TO PICKUP AT
95%
UNLESS OTHERWISE SPECIFIED .
TIJoE DELAYS
D . TIME DELAY TO OVERRIDE MOMENTARY NORMAL SOURCE
OUTAGES TO OELAY ALL TRANSFER SWITCH ANO ENGINE
STARTING SIGNALS . AD0USTABLE FROM 0 TO 6 SECONDS .
FACTORY SET AT
I
SECOND UNLESS OTHERWISE SPECIFIED.
ST AN:lARD
FEA
TU<E
I .
E . RETRANSFER TO NORMAL TIME DELAY . TIME DELAY IS
AUTOMATICALLY BYPASSED IF EMERGENCY SOURCE FAILS AND
NORMAL SOURCE IS AVAILABLE . AD0USTABLE FROM 0 TO 30
MINUTES . FACTORY SET AT 30 MINUTES UNLESS OTHERWISE
SPECIFIED .
STANDARD
FEATURE
3A.
F . UNLOADED RUNNING TIME DELAY FOR EMERGENCY ENGINE
GENERATOR COOLDOWN . AD0USTABLE FROM
0
TO 60 MINUTES.
FACTORY SET AT 5 MINUTES UNLESS OTHERWISE SPECIFIED.
STAN:lARO
FEATURE 2E .
G . TRANSFER TO EMERGENCY TIME DELAY . AD0USTABLE FROM
o
TO
5
MINUTES . FACTORY SET AT
0
MINUTES UNLESS
OTHERWISE SPECIFIED .
STAN:lARD FEATURE
26.
MANUAL CONTROLS
H . MOMENTARY TYPE TEST SWI TCH ( TGL ) TO SIMULATE
NORMAL SOURCE FAILURE . INSTALLED ON ODOR OF
ENCLOSEO TYPE . SHIPPED LOOSE FOR OPEN TYPE .
STANDARD FEATURE
3 .
REMOTE AUTOMATIC TRANSFER SWITCH CIRCUITS
0 .
TERMINAL PROVISIONS FOR REMOTE CUSTOMER CONTACT
WHICH OPENS TO SIGNAL A . T . S . TO TRANSFER TO
EMERGENCY . REFER TO OPERATOR ' S MANUAL TO
ACTIVATE .
STANDARD FEATURE
1
7
.
( SEE NOTE
9 )
MANJAL
CONTROLS
D
6B,
MOMENTARY OVERRIDE SWITCH TO MANUALLY BYPASS
TIME DELAY ON RETRANSFER TO NORMAL . INSTALLED ON
DOOR OF ENCLOSEO TYPE . SHIPPEO LOOSE FOR OPEN TYPE .
D 6C ,
MOMENTARY RESET SWITCH FOR MANUAL RETRANSFER
OF THE A . T . S TO THE NORMAL SOURCE ONLY AFTER
TIME DELAY FEATURE 3A EXPIRES WITH INSTANTANEOUS
AUTOMATIC RETRANSFER IN THE EVENT OF EMERGENCY
SOURCE FAILURE . INSTALLED ON DOOR OF ENCLOSED TYPE .
SHIPPED LOOSE FOR OPEN TYPE .
IIIDICATORS
D
1 4A1 1 4B ,
ADDITIONAL AUXILIARY CONTACT SETS .
ONE SET IS SUPPLIED AS STANDARD . SPECIFY TOTAL
QUANTITY WHEN MORE THAN ONE SET I S REQUIRED .
TOTAL OUANTITY
p
p
S T A N D A R D F E A T U R E S
ENGINE CONTROL CONTACTS
K . ONE SET OF CONTACTS CONSISTING OF , ONE CONTACT
THAT CLOSES WHEN NORMAL SOURCE FAILS AND ONE
CONTACT THAT OPENS WHEN NORMAL SOURCE FAILS .
CONTACTS ARE GOLD FLASHED FOR LOW VOLTAGE ENGINE
START S IGNALS OR OTHER CUSTOMER USE.
RATED
1 0
AMPS . 32 VOLTS DC .
STAN:lARO FEATURE 7/8.
INDICATORS
L . ONE SET OF AUXILIARY CONTACTS CONSISTING OF , ONE
CONTACT CLOSED WHEN A . T . S . I S CONNECTED TO
NORMAL AND ONE CONTACT CLOSED WHEN A . T . S . IS
CONNECTED TO EMERGENCY . (ADDITIONAL SETS OF
AUXILIARY CONTACTS ARE AVAILABLE AS OPTIONS - SEE
BELOW ) .
STANDARD FEATURE 1 4A/ 1 4B .
M . ONE SET OF SIGNAL LIGHTS CONSISTING OF , ONE SIGNAL
LIGHT ( GREEN) TO INOICATE
WHEN A . T . S . IS CONNECTED
TO NORMAL SOURCE AND ONE SIGNAL LIGHT ( RE D ) TO
INOICATE WHEN A . T . S . I S CONNECTED TO EMERGENCY SOURCE .
LIGHTS ARE INSTALLED ON OOOR OF ENCLOSEO TYPE .
SHIPPED LOOSE FOR OPEN TYPE .
STAN:lARO FEATURE 9A/96 .
TRANSFER IMiIBIT
N . TERMINAL PROVISIONS FOR REMOTE CUSTOMER CONTAC T ( S )
TO INHIBIT A . T . S . TRANSFER TO NORMAL ANDIOR EMERGENCY
SOURCE . CUSTOMER CONTACT OPENS TO INH I B I T TRANSFER .
REFER TO OPERATOR ' S MANUAL TO ACTIVATE .
STAN:lARD
FEATURE
34A/34B .
( SEE NOTE
9 )
COI+1IT
/l\()
COI+1IT ON TRANSFER
P . UPON FEATURE
I
TIMING OUT ( DUE TO A TEST OR NORMAL
SOURCE FAILURE) THE A . T . S . IS COMMITTED TO TRANSFER
TO EMERGENCY . EVEN IF THE NORMAL SOURCE IS RESTORED
BEFORE THE TRANSFER TAKES PLACE . THIS "COMMIT ON
TRANSFER" FEATURE CAN BE OVERRIDDEN BY OPERATING A
SWITCH IN THE CONTROL PANEL . REFER TO OPERATOR ' S
MANUAL .
FREOUENCY
SELECTION
R . OPERATING FREQUENCIES OF 50HZ . OR 60HZ . MAY BE
SELECTED B Y A SWITCH IN THE CONTROL PANEL . FACTORY
SET AT SPECIFIEO FREQUENCY . REFER TO OPERATORS ' S
MANUAL .
O P T I O N A L A C C E S S O R I E S
INDICATORS (CONT 'D , )
D 9C/90
,
ONE SET OF SIGNAL LIGHTS CONSISTING OF ,
ONE SIGNAL LIGHT ( GREEN) TO INDICATE NORMAL SOURCE
AVAILABLE AND ONE S I GNAL LIGHT ( R E D ) TO INDICATE
EMERGENCY SOURCE AVAILABLE . INSTALLED ON DOOR OF
ENCLOSED TYPE . SHIPPED LOOSE FOR OPEN TYPE .
PLANT EXERCISER
D
I
I C ,
ENGINE GENERATOR EXERCISING TIMER WITH
"LOAD" OR "NO-LOAD" OPERATING MODES . AD0USTABLE
FROM
I
MINUTE TO 24 HOURS IN
I
MINUTE INCREMENTS .
FACTORY SET FOR 20 MINUTES MINIMUM EACH WEEK
UNLESS OTHERWISE SPECIFIED . REFER TO OPERATOR ' S
MANUAL FOR MODE SELECTION .
MOTOR LOAD TRANSFER
D
27,
INPHASE MONITOR CONTROL FOR TRANSFER AND
RETRANSFER OF MOTOR LOADS . SO THAT INRUSH
CURRENTS DO NOT EXCEEO NORMAL STARTING CURRENTS .
TO AVOID NUISANCE TRIPPING OF CIRCUIT BREAKERS
AND POSSIBLE MECHANICAL DAMAGE TO MOTOR COUPLINGS .
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