CSI SECTION 16611 STATIC UNINTERRUPTIBLE SYSTEM
CSI SECTION 16611 STATIC UNINTERRUPTIBLE SYSTEM
1.3 MODES OF OPERATION
A. Online: The input PFC power stage and the output power stage (inverter) operate in an
on-line manner to continuously regulate power to the critical load. The input PFC stage
is 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. On Battery: Upon failure of the AC input source, the critical load will continue being
supplied by the output power stage (inverter), which will derive its power from the
battery system. There will be no interruption in power to the critical load during both
transfers to battery operation and retransfers from battery to online operation.
C. Bypass: The bypass mode will be used to provide transfer of critical load from the
inverter output to the primary power source. This transfer, along with its retransfer, will
take place with no power interruption to the critical load. In the event of an emergency,
this transfer shall be an automatic function.
D. External Service Bypass Panel (SBP): A maintenance service bypass panel shall
provide power to the critical load from the bypass power source during times when
maintenance or service requires the removal of the UPS. The SBP shall provide a
mechanical means of complete isolation of the UPS from the electrical wiring of the
installation. The SBP shall be constructed in a free-standing, rack mounted or wall-
mounted NEMA 1 enclosure unless otherwise stated in this specification. It shall be
designed for single phase input with a “no break” transfer between bypass and UPS
power.
1.4 SUBMITTALS
A. Proposal Submittals:
1. As bid system bill of materials.
2. Product catalog sheets or equipment brochures.
3. Product guide specifications.
4. System single-line operation diagram.
5. Installation information, including weights and dimensions.
6. Information about terminal locations for power and control connections.
B. Delivery Submittals:
1. Installation manual, which includes instructions for storage, handling,
examination, preparation, installation, and start-up of UPS.
2. User manual, which includes operating instructions.
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