E-Mon E-PS-A-RTU-N - Manual (Page 62)

Chapter 4 Power
S O F T W A R E G E N E R A L M E T E R S E T U P
62 PowerSmart+ Advanced Power Quality Meter
1 PT Ratio is defined as a relation of the potential transformer’s primary voltage
rating to its secondary rating. For example, for the 14,400 V transformer’s primary
rating and 120 V secondary rating, the PT Ratio = 14400/120 = 120.
Available wiring modes are listed in the following table.
Wiring Mode Description
3
O
P
2 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
3BLN3 3-wire Broken Delta using 2 PTs, 3 CTs (2½-element), line-to-neutral
voltage readings
3BLL3 3-wire Broken Delta using 2 PTs, 3 CTs (2½-element), line-to-line voltage
readings
In 4LN3, 3LN3 and 3BLN3 wiring modes, the voltage readings for min/max volts and
volt demands represent line-to-neutral voltages; otherwise, they will be line-to-line voltages.
The voltage waveforms and harmonics in 4LN3, 3LN3 and 3BLN3 wiring modes represent
line-to-neutral voltages; otherwise, they will be line-to-line voltages.
Device Options Device Options Device Options Device Options
This setup allows you to enable or disable optional calculations and redefine user-
selectable device options.
To enter the setup dialog, select the device site from the list box on the Power Software
toolbar, select General Setup from the Meter Setup menu, and then click on the Device
Options tab.
The following table lists available device options.