SATEC C191HM - Manual (Page 30)

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 10*-6,500.0 The phase potential transformer ratio
Ct CT primary current 1-6,500A
(5 ∗)
The primary rating of the phase current
transformer
d.P Power demand
period 1, 2, 5, 10,
15*, 20, 30,
60, E The length of the demand period for power
demand calculations, in minutes. E = external
synchronization
n.dp Number of power
demand periods 1-15
(1*) The number of demand periods to be averaged
for sliding window demands
1 = block interval demand calculation
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 sliding
averaging
rSt Reset
enable/disable diS ∗, En Protects all reset functions, both via the front
panel or communications.
Freq Nominal frequency 50, 60 Hz The nominal power utility frequency
LoAd Maximum demand
load current 0-6,500A
(0
∗)
The maximum demand load current used in
TDD calculations (0 = CT primary current)
When the power demand period is specified in minutes, synchronization of the demand
interval can be made through communications (see the C191HM ASCII/Modbus
Reference Guides) or via the front panel (see Section 4.11). If the power demand
period is set to External Synchronization, an external synchronization pulse denoting
the start of the next demand interval can be provided through a digital input or can be
simulated by using the synchronization command sent via communications.
60 Hz default for North America; elsewhere, default is 50Hz.
NOTES
1) The maximum value for CT PRIMARY CURRENT × PT RATIO is 10,000,000. If this
product is greater, power related values will be zeroed.
2) Always specify WIRING MODE, PT RATIO and CT PRIMARY CURRENT prior to
setting up alarm setpoints, otherwise the alarm/event setpoints which use these
parameters will automatically be disabled.