TranSystems Corporation - LGM Construction

501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11
SECTION 16450 - POWER FACTOR CORRECTION CAPACITOR SYSTEMS
PART 1 - GENERAL
1.1 SUMMARY
A. This Section includes automatic power factor correction capacitor (PFCC) equipment rated 600 V and
less.
B. Refer to the Sort Building electrical drawings. The feeder provisions and conduit for the automatic power
factor correction capacitor bank systems shall be installed as indicated during the initial phase of
construction. Since the exact load, power factor and harmonic levels on which the PFCC requirements
will be based cannot be known until the new sort automation system is operational, the design, supply and
installation of the two automatic power factor correction systems shown in the electrical drawings will be
on a delayed basis as defined herein. An allowance will be carried in the contract for work occurring under
this section.
C. Approximately one month after the new sort automation system in the Sort Building has been put into
normal operation, the contractor shall measure and record load, power factor and harmonic levels during a
typical 24-hour period covering both on-peak and off-peak business hours in order to quantify existing
conditions. The contractor shall submit a report listing those existing conditions as measured along with
recommended PFCC units capable of bringing the Sort Building distribution system to unity power factor,
or as close to it as possible within the confines of 1200A feeder connections to the PFCC banks. The
submittal for the recommended PFCC units shall include the current-sensing current transformer suitable
for retrofit into operational switchboards.
D. The recommended PFCC banks shall be selected as “anti-resonant” if more than 15% of the load is
harmonic-generating, or “standard” if 15% or less of the load is harmonic generating.
E. The recommended PFCC banks shall utilize multiple steps of no more than 150 kVAR per step.
F. Under conditions where both sides of the Sort Building substation’s double-ended bus are being served
from one main breaker (one main breaker and tie breaker closed with other main breaker open), the two
PFCC banks must be capable of being online at the same time, or else one of them must be interlocked to
prevent compatibility problems.
G. Upon approval of the submitted PFCC system by the Owner, the contractor shall procure and install the
PFCC system.
1.2 SUBMITTALS
A. Product Data: For each type of product indicated. Include dimensions, operating characteristics of
multiple capacitor cells or elements, and data on features, ratings, and performance.
B. Shop Drawings: Detail equipment assemblies and indicate dimensions, weights, method of field
assembly, components, and location and size of each field connection. Show access and workspace
requirements and required clearances.
POWER FACTOR CORRECTION CAPACITOR SYSTEMS 16450 - 1