ABB Zenith ZTX Series, Operation, Maintenance, And Installation Manual

Page: 47 / 72

47
1 Environmental Value
Environments category E
EMC environment Environment A
Operating temperature (without derating) -20 - +40 °C
Operating temperature (with derating) -25 - +70 °C
Transportation and storage temperature -40 - +70 °C
Altitude (without derating) Up to 2000 m
—
Table 7.2 General technical data of automatic transfer switch
Type Voltage
[Vac]
Nominal
current*
[A]
Operating
transfer time
1, 2
AUTO mode
I-II or II-I
[ms]
Contact
transfer
time
1
I-II or II-I
[ms]
ZTX 30 - 260A 200 - 480 37 < 500 < 50
ZTX 400 - 600A 200 - 480 40 < 500 < 50
ZTX 800 - 1200A 200 - 480 40 < 500 < 50
1
Under nominal conditions
2
Time from source fail detection to contact closing on already-available secondary source
3
All times consider that all timers are set to "0"
—
Table 7.3 Specified technical data of operating times
Recommended Operating / Storage Temperature
Do not store the automatic transfer switch in corrosive environments above LC1 (sea
salt mist) and G1 as per ANSI/ ISA-S71.04-1985. Failure to comply with these instruc-
tions may result in product damage. Store the automatic transfer switch and related
accessories in a clean, dry location in their original packaging.