American Power Conversion 250 A - Manual (Page 43)

InfraStruXure Power Generation System 33
ATS/Voltage
ATS Position
S1-Utility
ATS Position: S1
S1-Utility: OK
S2-Generator: OFF
ATS Setup
One of the following options is displayed to describe the selected source:
S1 The Source 1 switch is ON (closed). Source 1 is connected to the output.
S2 The Source 2 switch is ON (closed). Source 2 is connected to the output.
NEUT The Source 1 and Source 2 switches are OFF (open). Neither source is connected to the output.
S1&S2! The Source 1 and Source 2 switches are ON (closed). This is an alarm condition.
One of the following is displayed to describe the condition of the input from Source 1.
OK Source 1 is acceptable, as defined in the Transfer Points menu (see page 35).
BAD Source 1 is not acceptable, as defined in the Transfer Points menu (see page 35).
Press E NTER when the selector arrow rests at the S1-Utility item to display the following:
L1-2, L2-3, L3-1 The Source 1 line-to-line input voltage.
L1, L2, L3 The Source 1 line-to-neutral input voltage. These readings are only displayed on Wye
systems.
Frequency The frequency of the utility input, in hertz (Hz).
Qual Describes the quality of the input from Source 1. One of the following conditions is
displayed:
• Source Good: The source is acceptable, as defined in the Transfer Points menu.
• Low Voltage: The input voltage is below the configured Low voltage Transfer Point
on one or more of the phases.
• High Voltage: The input voltage exceeds the configured High voltage Transfer Point
on one or more of the phases.
• Phase Imbalance: The percent voltage difference between two phases, as defined by
the Phase Balance setting in the Transfer Points menu, has been exceeded.
• Freq Range: The frequency is outside the configured Freq range, as defined in the
Transfer Points menu.
• Bad Rotation: The phase rotation does not match the configured Phase Sequence, as
defined in the Transfer Points menu.
Phase Sequence Lists the phase rotation (e.g., A-B-C) of the Source 1 input.