Tender Specification for Supply, Erection, Testing and ... - IDCO

All starters shall be provided with thermal over load relay.
All star delta starters shall have adjustable timers.
Rating of motors shall be selected to suit the application as indicated in the Schedule of Equipment.
All starters shall be provided as specified in Bill of Quantities. All starter shall be compatible to the
drive and driven equipment.
Auxiliary contacts for interlocking purpose shall be provided in the starter.
INSTALLATION OF MOTORS:
The motor and drive machine shall be fixed on slide rails to facilitate belt and other adjustments.
Vibration isolation arrangement shall be provided.
The installation of motor shall be carried out as per IS:900.
The motor with driving equipment shall be mounted on foundation and connected to each other with
flexible coupling with guard in condenser and chilled water pumps.
All motors after installation shall be tested at site for vibrations, heating and electrical insulation
resistance by AC contractor.
MOTOR CONTROL CENTRE (MV PANEL), AHU SUB-PANEL:
This section deals with supply, installation, testing and commissioning of Motor Control Centre (MV
panel), AHU Sub-Panels etc. and shall be manufactured by CPRI approved venders. The power /
control cabling and earthing work shall be carried out as per the specification given below:
SCOPE:
All work shall confirm to Indian Electricity Act (amended upto date), I.S. code of practices local rules
and regulations etc. Power cabling shall be carried out with approved make of cables as indicated in
the List of approved make of equipment / materials and shall be of grade 1100 volts, PVC
insulated and sheathed, armoured aluminum conductors cables. Control cabling shall be of approved
make and shall be of grade 1100 volts, PVC insulated & sheathed, copper conductor armoured
multicore cables as specified in BOQ.
MOTOR CONTROL CENTRE (MV PANEL) / AHU SUB-PANEL:
Motor control centre (MV Panel) floor mounted extendable type and wall mounted AHU sub-panel
shall be fabricated out of 14G C.R.C.A. Sheet. These panels shall be cubical sectionalised type,
totally enclosed dust & vermin proof. Gaskets shall be provided in all joints to prevent dust to reach
the internals of the panels to make it completely dust proof.
The degree of protections for panels shall be IP 52 for indoor applications and IP 55 for outdoor
applications as per IS:2147.
This panel (MV) shall be suitable for voltages upto 500 volts, three phase 50 Hz, 4 wire supply
capable of functioning satisfactorily in temperature ranging up to 45 to 50 degree centigrade and
rupturing capacity suitable for connected load and design should be type tested for 42 KA fault level.
All joints of panels shall be welded and braced as necessary to provide a rigid support for all
components. The base channel provided in the floor mounted MV panel shall be 75mm high and a
clear space of 200mm between the floor and the bottom most part of the unit shall be provided. The
panel shall be correctly positioned. Self- threading screws shall not be used in the construction of
control panels.
No of Corrections
-50-
Signature of Tenderer