Eaton PXR10 - 1.3 Standards, Guidelines, and Approvals

0 About this manual
0.3 Abbreviations and symbols
6 PXR Electronic trip unit 01/21 MN012005EN www.eaton.com
0.3 Abbreviations and symbols
The following abbreviations are used in this manual:
Table 1: Abbreviations used
The symbols used in this manual have the following meanings:
▶ indicates an action to be taken.
Abbreviation Meaning
ARMS Arc Flash Reduction Maintenance System™
ECAM Ethernet communication adapter module
G Ground fault (= ground-fault protection I
g
)
I Instantaneous (= instantaneous short-circuit protection I
i
)
I
g
Ground-fault trip
I
i
Non-delayed instantaneous trip
I
n
Rated operational current
I
r
Overload release
I
sd
Short-time delayed short-circuit release
L Long delay (= overload protection I
r
)
PXPM
“Power Xpert Protection Manager” (software)
PXR “Power Xpert Release”
RTU Remote terminal unit
S Short delay (= short-time delayed short-circuit protection I
sd
)
t
g
Ground-fault delay time
t
r
Time-lag
t
sd
Duration of short-time delay
ZSI Zone selective interlocking
￫
The abbreviation PXR:
For the PXR10, PXR20 and PXR25 versions, the abbreviation
PXR is used if a statement applies equally to all three.