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Chapter 4 Setup Menus
21
Table 4-1 Basic Setup Options
(
∗
default setting)
Code Parameter Options
Description
ConF Wiring mode
3OP2
3-wire open delta using 2 CTs (2 element)
4Ln3
∗
4-wire Wye using 3 PTs (3 element), line to
neutral voltage readings
3dir2
3-wire direct connection using 2 CTs (2
element)
4LL3
4-wire Wye using 3 PTs (3 element), line to
line voltage readings
3OP3
3-wire open delta using 3 CTs (2½ element)
3Ln3
4-wire Wye using 2 PTs (2½ element), line to
neutral voltage readings
3LL3
4-wire
Wye using 2 PTs (2½ element), line to
line voltage readings
Pt PT
ratio
1.0
∗
-
6,500.0
The potential transformer ratio
U.SEC PT secondary
voltage
10 - 690
(120
∗
/400
∗
)
Nominal secondary voltage of the phase
potential transformer
Ct
CT primary current 1-10,000A
(5
∗
)
The primary rating of the phase current
transformer
d.P
Demand period
1, 2, 5, 10,
15
∗
, 20, 30,
60, E
min
The length of the demand interval (sub-
interval for sliding window demand) for
power demand calculations, in minutes.
E = external synchronization
n.dP
Number of demand
periods
1-15
(1
∗
)
The number of demand sub-intervals to be
averaged for sliding window demands. A
product of the demand period and the
number of demand periods should not
exceed 60 min.
For block demand, set this value to one.
A.dP Ampere/Volt
demand
period
0-1800 s
(900
∗
)
The length of the demand period for
volt/ampere demand calculations, in seconds
(0 = measuring peak current)
buF
Averaging buffer size 8
∗
, 16, 32 The number of measurements for RMS
averaging
rSt Reset
enable/disable diS, En
∗
Protects all reset functions, both via the front
panel or communications.
PrE.C
2
The number of pre-
event cycles for
waveform log #1
1-8 (1*)
The number of waveform cycles to be
recorded before the event that triggered
waveform capture
rEc.C
2
The number of
cycles in a waveform
series for waveform
log #1
0 to 1280
(0*)
The total number of waveform cycles to be
recorded on any event occurrence. Will be
rounded to a nearest bigger number multiple
of 16.
Freq
Nominal frequency 50, 60 Hz
1
The nominal power utility frequency
LoAd Maximum
demand
load current
0-10,000 A
(0
∗
)
The maximum demand load current used in
TDD calculations (0 = CT primary current)
1
60 Hz default for North America; elsewhere, default is 50Hz.
Содержание PM172EH Series
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