Emerson 250-400kVA manual Metering, Help, Reset, Silence, Load on Bypass

Operation

Clear Log—This command resets the Date of First Discharge Cycle. A dialog box will warn that the data will be permanently lost and should downloaded before proceeding (see Figure 22).

Figure 22 Battery cycle monitor—clear log

2.2.8Metering

This button will place the metering tables in the multipurpose window.

2.2.9Help

This button will display the help menu.

2.2.10Reset

This button will reset any non-active latched events.

2.2.11Silence

This button will silence the audible alarm.

2.3Modes of Operation

This section illustrates the flow of power through circuit breakers, switches and UPS components during various modes of operation. The same modes of operation apply to all configurations of the Lie- bert NXL. Highlighted (thick) lines in the diagrams indicate power flow and power availability.

These illustrations do not show an alternate power source (generator) and automatic transfer switch (external to the UPS) that might be present at your installation.

2.3.1Load on Bypass

Load on Bypass, with the UPS not available, is shown in Figure 23. The UPS system could be in this mode of operation during either initial startup or UPS system shutdown and isolation for mainte- nance.

NOTICE

Risk of equipment damage. When the critical load is being supplied power from the bypass line, it is exposed to utility failure and fluctuations.

Figure 23 Load on bypass (UPS not available)

Bypass

Input

BFB

CB1

DC Bus	Module
	Output
CB2

Battery System

MBD

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