APC AP9212 Technical Information Page 65

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Chapter 7:
[sPDUOutConfigMSPgs] Outlet Configuration OIDS
PowerNet MIB Reference Guide
58
Example of a “Load-Shedding” Configuration
You can configure the eight outlets of the MasterSwitch Plus unit to turn off in up to seven stages during a power outage
so that devices attached to those outlets shut down in an ordered sequence based on the importance you assign to them.
Such load shedding allows you to extend UPS runtime to more important equipment by eliminating less significant
equipment in stages from the UPS load as a power outage continues to reduce available battery runtime.
In the following table, which shows a sample load-shedding configuration, the following OID values are referenced:
Low Battery Warning is the value of the sPDUOutletConfigMSPgsLowBattWarning OID.
Low Battery Multiplier is the value of the sPDUOutletConfigMSPgsLowBattMult OID.
UPS Parameters MasterSwitch Plus Unit Parameters
Low Battery
Signal Time
Runtime
Remaining
UPS
State
Outlet Low Battery Warning Low
Battery
Multiplier
Low Battery Multiplier
x
the Low Battery Signal
Time of the UPS
25 minutes 60 minutes On
battery
1 60 six-second intervals
(60 x 6 seconds = 6 minutes)
7 7 x 25 = 175 minutes
2 60 six-second intervals
(60 x 6 seconds = 6 minutes)
6 6 x 25 = 150 minutes
3 120 six-second intervals
(120 x 6 seconds = 12
minutes)
2 2 x 25 = 50 minutes
4 70 six-second intervals
(70 x 6 seconds = 7 minutes)
2 2 x 25 = 50 minutes
5 -1: (Turn off the outlet based
on runtime remaining.)
3 3 x 25 = 75 minutes
6 -1: (Turn off the outlet based
on runtime remaining.)
2 2 x 25 = 50 minutes
7 -1: (Turn off the outlet based
on runtime remaining.)
1 1 x 25 = 25 minutes
8 -2: (Do not turn off the
outlet.)
3 3 x 25 = 75 minutes
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