INSTALLING THE AT10.1
10
1.6. CHANGING THE TRANSFORMER TAPS
AT10.1s (30-100 Adc Group II ratings) are normally designed for a
single
ac input supply voltage. Verify the ac voltage listed on the data nameplate
decal, and the
CAUTION
tag attached to the ac input circuit breaker
(CB1). The AT10.1 ac input transformer (T1) is designed with a voltage
tolerance of +10% to -12%.
!
WARNING
If your particular site ac supply voltage does not match your AT10.1
ac input requirements, you MAY need to change the ac input circuit
breaker (and/or fuses), and the input surge suppressors. In
addition, you must replace (
or rewire
) the ac input power isolation
transformer (T1) as described below.
Failure to use properly rated components may damage the AT10.1.
If your AT10.1 was supplied with the 480 Vac 60Hz ac input feature, the
transformer will
only
accept the listed voltage.
NOTICE
Do not attempt to rewire the 480Vac transformer.
If a different ac
input voltage for the AT10.1 is desired, please contact your sales
representative for ordering replacement parts (T1, CB1, VR2-VR5).
If your AT10.1 was supplied with one of the following ac input voltage
features, the transformer
is
re-tappable:
•
120
or
208
or
240Vac 60Hz
•
120
or
220
or
240Vac 50/60Hz
•
380
or
416Vac 50/60Hz
•
550
or
600Vac 50/60Hz
Before you connect ac power to the AT10.1, inspect the
primary
wiring of
the ac input transformer (T1). Make sure it is "tapped" for the desired ac
input supply voltage.
NOTICE
Before starting work, disconnect and lock out all external ac and
dc power sources to the AT10.1. Merely turning off (opening)
the front panel ac and dc circuit breakers (CB1/CB2) is not
sufficient to eliminate live voltages inside the enclosure. Verify
that no voltages are present inside the AT10.1, using a
voltmeter at the ac terminals TB1-L1 & TB1-L2, the dc terminals
TB1(+) & TB1(-), the dc remote sense terminals, and any
external wiring to alarm relay contacts.
Содержание AT10.1 SERIES
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