possible the designer shall show KVAR ratings on the
drawings, coordinating these requirements with
actual motors used.
When power factor correction is not needed, delete
this paragraph.
**************************************************************************
Three-phase, delta-connected capacitors for power factor improvement shall
be rated [_____] volts, 60 Hz. [Capacitors shall have KVAR capacity as
shown on the drawings] [The capacitor KVAR capacity shall be selected to
achieve no less than [_____] percent leading nor more than [_____] percent
lagging power factor at nameplate value of motor full load current. The
KVAR capacity of the capacitors shall not be greater than that recommended
by the motor manufacturer or if no such recommendation exists, that value
which gives with a lagging power factor at no-load.] If size permits, the
capacitors shall be mounted in an adjacent compartment, or otherwise shall
be mounted separately and connected to the motor at the motor terminal box.
[For reduced voltage starters, the capacitors shall be separately switched
with a time-delayed contactor rated according to NEMA ICS 2 for capacitor
switching.]]
2.6.14
[Space for Mounting PLC's
**************************************************************************
NOTE: Delete this paragraph when PLC's are not used.
**************************************************************************
Space for mounting of Programmable Logic Controllers (PLC's) shall be
provided as indicated on the drawings.]
2.7
SWITCHBOARDS
**************************************************************************
NOTES: The switchboard specified below is not
intended for applications where the available fault
current is above 65,000 amps. Where drawout-type
breakers, and high short circuit current ratings are
desired, UFGS-16404A, 480-VOLT STATION SERVICE
SWITCHGEAR AND TRANSFORMERS should be used.
The short-circuit current rating assigned to the
switchboard shall be in accordance with NEMA PB 2.
**************************************************************************
The switchboards shall be dead-front switchboards conforming to NEMA PB 2
and labeled under UL 891. The switchboards shall be completely enclosed
self-supporting metal structures with the required number of vertical panel
sections, buses, molded-case circuit breakers, [and other devices] as shown
on the drawings. Switchboards shall be fully rated for a short-circuit
current of [14,000] [22,000] [65,000] [_____] symmetrical amperes RMS AC.
2.7.1
Enclosure
**************************************************************************
NOTE: Mounting sills should be included for all new
construction to provide structural integrity. NEMA
PB2 90" height includes these sills.
**************************************************************************
SECTION 16403A
Page 30
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