Eaton Powerware 9390 Specifications Manual - page 5
Static Uninterruptible Power Supply
Page 5 of 5
Eaton 9390 Guide Specification
October 9, 2009
b)
Critical bus voltage out of limits.
c)
Internal over temperature period expired.
d)
Total battery discharge.
e)
UPS failure.
2.
Uninterrupted automatic re-transfer shall take place whenever the inverter is
capable of assuming the critical load.
3.
Uninterrupted automatic re-transfers shall be inhibited for the following
conditions:
a)
When transfer to bypass is activated manually or remotely.
b)
In the event of multiple transfers/re-transfer operations the control
circuitry shall limit “cycling” to three (3) operations in any ten-minute
period. The fourth transfer shall lock the critical load on the bypass
source.
c)
UPS failure.
4.
Uninterrupted manual transfers shall be initiated from the control panel.
Uninterrupted manual transfers to bypass and from bypass shall be possible with
the inverter logic. During manual transfers to bypass mode, the inverter must
verify proper bypass operations before transferring the critical load to the bypass.
5.
All transfers to bypass shall be inhibited for the following conditions:
a)
Bypass voltage out of limits (+/- 10% of nominal)
b)
Bypass frequency out of limits (+/- 3 Hz, adjustable, factory set)
c)
Bypass out of synchronization
d)
Bypass phase rotation / installation error
6.
Static transfer time: No break, complete in less than 4ms.
7.
The bypass shall be manually energized using the control panel or remotely
through a building alarm input.
D.
Monitoring and control components: The following components shall provide monitor and
control capability:
1.
Control panel with status indicators.
2.
Alarm and metering display.
3.
Building alarm monitoring.
4.
Communication ports.
E.
Battery management system: The UPS shall contain a battery management system
which has the following features:
1.
The battery management system shall provide battery time remaining while
operating in normal mode and battery mode. Battery time available information
shall be displayed real-time, even under changing load conditions. Upon
commissioning, battery runtime information shall be available.
2.
The battery management system shall automatically test the battery string(s) to
ensure that the battery is capable of providing greater that 80% of it’s rated
capacity. Testing the batteries shall not jeopardize the operation of the critical
load. Upon detection of the battery string(s) not capable of providing 80%, the