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CSI SECTION 16611 STATIC UNINTERRUPTIBLE SYSTEM
CSI SECTION 16611 STATIC UNINTERRUPTIBLE SYSTEM
E. The UPS and associated equipment shall operate in conjunction with a primary power
supply and an output distribution system to provide quality uninterrupted power for
mission critical, electronic equipment load.
F. All programming and miscellaneous components for a fully operational system as
described in this specification shall be available as part of the UPS.
1.2 STANDARDS
A. UL 1778 Uninterruptible Power Supply Equipment
B. CSA
C. FCC Class A
D. ISO 9001
E. ISO 14001
1.3 MODES OF OPERATION
A. Normal: The input converter and output inverter shall operate in an on-line manner to
continuously regulate power to the critical load. The input and output converters shall
be capable of full battery recharge while simultaneously providing regulated power to
the load for all line and load conditions within the range of the UPS specifications.
B. Battery: Upon failure of the AC input source, the critical load shall continue being
supplied by the output inverter, which shall derive its power from the battery system.
There shall be no interruption in power to the critical load during both transfers to
battery operation and retransfers from battery to normal operation.
C. Recharge: Upon restoration of the AC input source, the input converter and output
inverter shall simultaneously recharge the battery and provide regulated power to the
critical load.
D. Automatic Bypass: The automatic bypass shall be used to provide transfer of critical
load from the Inverter output to the bypass source. This transfer, along with its
retransfer, shall take place with no power interruption to the critical load. In the event of
an emergency, this transfer shall be an automatic function.
E. Manuel Bypass: The system shall be equipped with an internal make-before-break two
pole switch to electrically isolate the UPS from the input and output during preventative
maintenance, module upgrades, or limited frame service. The manual bypass shall also
be considered a partial ‘wrap-around’ bypass, and shall be configured to wrap around
the power modules (recitifier, battery charger, inverter) , and battery modules in the
same manner as the automatic bypass will still supplying surge and EMI filtering, and
overcurrent protection. There will be a positional sense supplied to alert users that the
UPS is in manual bypass.