Volume-IF - JantERmantER

PEM-6666-0
TITLE SPECIFICATION NO. PE-TS-360-620-C001
TECHNICAL SPECIFICATION FOR
VOLUME: IIB
STACK ELEVATOR
SECTION C
REV 0 DATE
SHEET
OF
r) Cab shall be controlled by a semi-automatic floor selection control system. Cab shall be furnished with
240 Volt grounding type receptacle, emergency alarm push button with a normally open contact rated 0.5
ampere at 220 VDC volts, indicating light, limit switches, and all other necessary control devices required
to ensure safe and continuous cab operation. One trailing cable shall connect the cab main control panel
to the auxiliary panel at ground level. Cable shall supply the cab with all power requirements. Cable
guides shall be installed at every 6 metres to avoid entanglement of this cable. Control signals between
the auxiliary panel at ground level and the main control panel on the cab. Will be provided with the tone
frequency receiver. However control and interlocks from the landings shall be connected to the auxiliary
panels located at ground level through fixed armoured cables. The power and control cables and training
power cables shall be FRLS type.
s) Each landing assembly shall include a limit switch for door interlock and push buttom control station
installed and wired to a landing junction box.
t) Cable trolley with cable guides for recoil of cable on to cable reel to maintain electrical power service to
all elevator component through out the limits of travel.
u) Contractor shall furnish, install, and connect a system equipment ground to the Owner’s existing chimney
ground system. System equipment ground shall electrically connect panels and junction boxes which
contain electrical devices, motors, and elevator platforms and support structure. Raceway system shall
not be considered as an equipment ground.
v) All enclosures containing electrical devices shall be provided with 240 Volt, single-phase space heaters
with adjustable thermostat control.
w) All power cables and race way shall be furnished and installed by the Contractor for interconnection of
the main control panel, auxiliary panel and landing junction boxes etc. Conductors included in the cable
shall be as required to energise all electrical equipment furnished with the elevator. Transmission of
alarm signals is done by means of tone frequency equipment. Hence communication conductors are not
required.
6.03.07 Electric Motor
Elevator drive motor shall be squirrel-cage induction type designed and fabricated to conform to the
requirements indicated on the drawings.
Motor shall be designed for operation at the required speed: 415 Volts, 3 phase, 50 hertz. And shall be
suitable for full voltage starting, S4 duty class as per IS-4722 with CDF of 25% and maximum number
of 120 starts per hour in 55 Deg. C ambient temperature. Motor shall be tested at the factory to
determine that it is free from electrical or mechanical defects.
Motor nameplate KW rating shall not be exceeded when the equipment is operating within the limits of
the maximum load requirements.
Motor shall have sealed Class B nonhygroscopic insulation IIS-325) or equivalent international
standard included two additional dips and bakes of epoxy varnish or vacuum impregnation. Insulation
system shall be the motor manufacturer’s standard premium insulation offering.
Motor shall be totally enclosed and furnished with cast iron frame, brackets, gasketed conduct box and
fan cover. Motor shall be furnished with grease prelubricated, double-shielded, anti-friction bearings
having life rating of not less than 42,500 hours under coupled service retirements. All exposed metal
surfaces shall be protected with a polyester paint or coating which is moisture and corrosion resisdtant.
Motor shall be provided with internal 240 Volt AC single-phase space heaters or an alternate heating
system to prevent condensation within the motor during extended periods of idleness. Motorheating
system shall be acceptable to the Engineer-in-Charge.
Motor and driven equipment shall be direct coupled or belted as required, and mounted on a common
baseplate with coupling or belt guard. Motor shall be completely assembled, lubricated, and ready for
operation.
Intent of these specifications is that the motor supplied be designed and constructed for the intended
service. Motor construction and duty cycle shall conform with all requirements of applicable safety
codes and standards for the service. For additional requirements Volume-IIF shall be referred to.