LEGRAND Raritan PX3TS User Manual page 742

Transfer switch
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Appendix A: Specifications
722
Rated voltage and current
Rated frequency
Load power factor
Non-linear load
Sense and transfer time
Phase sync requirements
Phase sync resolution
Redundancy
SCR derating
SCR protection
Internal fault monitoring
Short circuit detection
Operating temperature
Storage temperature
See the label or nameplate on your PX3TS
model
50/60Hz +/- 5Hz
0.60 to 1.00 (leading or lagging)
Rated current up to crest factor 3.5
4-8 milliseconds
None -- inlets may be any phase relationship
+/- 5 degrees
Two power supplies.
The PX3TS continues to function on one
power supply.
At maximum continuous load, SCR switches
are running at 30% of the full rated current
and are running 50 degrees cooler than rated
semiconductor junction temperature
MOV (Metal Oxide Varistor) voltage transient
protection
▪ Switch open or short fault
▪ MOV surge protector failure
▪ Internal DC 12V power supply failure
▪ Overcurrent protector blow or trip
detection
The short circuit threshold varies depending
on the rating:
▪ 16A models, such as PX3TS-1876R: around
45A
▪ 24A models, such as PX3TS-1464R: around
68A
▪ 32A models, such as PX3TS-1469R: around
91A
For details on the threshold calculation, see
Short Circuit Detection
(on page 120).
50°F (10°C) to 122°F (50°C)
14°F (-10°C) to 140°F (60°C)

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