Operation Types - ABB Zenith ZTG T Series Operation, Maintenance, And Installation Manual
For ztg(d/ct) t-series automatic transfer switches 1600-3000 a, 208-480 vac
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18
2.1.1 Operation types
In this table you can find the differences
of the automatic transfer switch open and
delayed transition operation types. Due
to the different transition types, there are
variances with HMI and on wiring of I/O
contacts. For more information on HMIs,
see Chapter 2.2.
Operation types, ZTG T-series ATS
Delayed transition, ZTGD
Closed transition, ZTGCT
S1
I
OII
S2
Load
ZTG T-series HMI (with LCD screen) and connections of control circuit
S1
O
S2
l
ll
!
LOAD
AUTO
Auto
Esc
Alarm reset
l
O
ll
ON
OFF
ON
—
Table 2.1 The differences of level types / operation types and the suitability of Ekip-modules
Z E N I T H Z T G ( D/C T ) T- S E R I E S 1 6 0 0 - 3 0 0 0 A
Open transition, ZTG
S1
S2
I
II
Load
S1
S2
l
ll
!
LOAD
AUTO
Auto
Esc
Alarm reset
l
ll
ON
ON
Ekip-modules suitable
Suitable
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