2.4.13.5
Pendant Drive System
Pendant festoon system shall be provided with a motor-drive system capable
of driving the pendant control car at [_____] m/s fpm. Pendant motor drive
shall be controlled from the pendant.
2.4.13.6
Pendant Retraction System
**************************************************************************
NOTE: Select method of pendant retraction if
specified; otherwise delete paragraph.
**************************************************************************
[Pendant control car shall be provided with an electric-powered cable reel
so that the pendant station will retract fully.] [A wire-rope hoist shall
be provided to hoist the pendant station. Pendant and pendant drop-cable
shall be retractable to approximately 1/3 of drop cable length.] Retraction
system shall be controlled from cab.
2.4.14
Special Requirements
2.4.14.1
Warning Horn
**************************************************************************
NOTE: Delete last sentence if not applicable to
project.
**************************************************************************
A solid-state electronic warning horn shall be provided on the crane. Any
bridge or trolley motion shall be accompanied by a continuous series of
alternating tones. The warning horn shall not sound when the crane is in
the micro-drive mode.
2.4.14.2
Accessory Power
**************************************************************************
NOTE: If lighting, motor or control cabinet heaters
or receptacles are specified, include the following
paragraph if 460 volt ac is the power source.
Select the components requiring power.
**************************************************************************
Three-phase 208Y/120 volt ac power supplied via a circuit breaker and
isolation transformer from the line side of the main line disconnect shall
be used for [lighting,] [heaters,] [and accessory circuits] on the crane.
The circuit breaker shall have a NEMA Type [1] [3R] [12] enclosure. The
enclosure shall have provisions to lock the breaker in the OFF position.
Each circuit breaker pole shall have individual thermal and magnetic trip
elements, and the enclosure cover shall be complete with a button for
mechanically tripping the circuit breaker. A three-phase 480 volt delta
primary and 208Y/120 volt wye secondary general lighting transformer shall
be supplied from the accessory circuit breaker and shall feed a 208Y/120
volt UL listed circuit breaker panelboard and a heater circuit
breaker/combination starter. The panelboard shall supply branch circuits
for utilization of various accessories such as [receptacles,] [lighting]
[panel internal lighting] [motor heaters and control enclosure which meets
NEMA requirements]. Transformer and panelboard shall have the same NEMA
classification as the circuit breaker.
SECTION 14630A
Page 46
Previous Page
