Enquiry Specification for Wagon Tippler with Side Arm Charger and ...
Enquiry Specification for Wagon Tippler with Side Arm Charger and ...
Enquiry Specification for Wagon Tippler with Side Arm Charger and ...
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<strong>Enquiry</strong> <strong>Specification</strong> <strong>for</strong> <strong>Wagon</strong> <strong>Tippler</strong> <strong>with</strong> <strong>Side</strong> <strong>Arm</strong> <strong>Charger</strong> <strong>and</strong> Associated works<br />
NRO/CON/WT/533<br />
iv) Motor body Grey iron casting as per IS:210-1978<br />
v) Casing Feet Integral <strong>with</strong> the motor frame<br />
vi) Body Design Prevent breakage or other failures due to<br />
vibrations normally encountered in heavy<br />
industries<br />
vii)<br />
Protection <strong>for</strong> Motor &<br />
Bearing<br />
IP – 55 as per IS 4691-1985.<br />
viii) Shaft Forged Steel shaft<br />
ix) Bearings (below 1000kW Anti-friction Bearing <strong>with</strong> Regreasing facility<br />
)<br />
& <strong>with</strong> grease quantity controllers<br />
Bearings (1000kW &<br />
above)<br />
x) Vibration monitor<br />
-Pedestal type sleeve bearing <strong>with</strong> <strong>for</strong>ced<br />
oil lubrication. (Arrangements to be<br />
incorporated to prevent lubricating oil from<br />
reaching the windings) -Bearing<br />
temperature, lubricating oil temperature<br />
<strong>and</strong> pressure to be measured <strong>and</strong><br />
monitored .<br />
Shall be provided at the DE end of motor<br />
bearing<br />
xi) Pedestals insulation Against circulating shaft currents<br />
xii)<br />
Hazardous Area safety<br />
design<br />
NA / as specified<br />
xiii) Indication of direction of<br />
rotation<br />
By Arrow blocks on non-driving end<br />
xiv) RTD & BTD ( PT100 type) − All motors shall be provided <strong>with</strong> Bearing<br />
(DE & NDE) temperature detectors <strong>and</strong> 6<br />
nos. stator winding temperature detectors,<br />
RTDs <strong>for</strong> monitoring alarm <strong>and</strong> trip<br />
conditions. RTD's shall be of PT100 type<br />
(duplex). − Analog input cards shall be<br />
provided in PLC <strong>for</strong> online monitoring of<br />
bearing (DE & NDE) <strong>and</strong> winding<br />
temperature of HT motors above 1000 KW .<br />
− For HT motors, temperature of each RTD<br />
(<strong>for</strong> winding / bearing) shall be wired to<br />
PLC system <strong>and</strong> limit value contacts <strong>for</strong><br />
alarm <strong>and</strong> tripping shall be generated in the<br />
PLC along <strong>with</strong> the display of all parameters<br />
of the motor including the winding <strong>and</strong><br />
bearing temperature.<br />
xv) Vibration monitoring − Vibration monitoring (online) shall be<br />
provided at the DE end of motor bearing <strong>for</strong><br />
motors of ratings 1000 kW <strong>and</strong> above <strong>and</strong><br />
it should be connected to PLC <strong>for</strong> online<br />
monitoring .<br />
xvi) Paint shade − Light grey , shade no. 631 as per IS 5<br />
3.0 Terminal box<br />
i) Protection IP -55<br />
ii) Type Phase segregated<br />
EPI – New Delhi Volume-2B, Rev.0 Page 42 of 63
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