NATIONAL ALUMINIUM COMPANY LIMITED - Rites

4. Value of earthing resistance
(proposed to be achieved) :
5. Type & size of electrodes :
6. Construction of earthing mat, etc as per TS : Included
UPS SYSTEM
1. Make of the system
:
2. Capacity in kVA
:
3. Battery back up time
:
4. Make & type of battery
:
5. Number of cells per battery :
6. Overall dimension(L x B x H) mm of battery :
7. Ventilation requirements :
8. Make, Rating & type of charger :
9. Make, Rating & type of rectifier transformer :
10. Make & current rating of SCR & Diode :
11. Make & rating of inverter :
12. Make & type of static transfer switch :
13. Make & rating of manual bypass switch :
TRANSFORMER
1. Name of manufacturer
:
2. Service-whether whether indoor or outdoor :
3. Type of cooling
4. Rating
:
a. Rated KVA
:
b. Rated current, amp (rms), HV/LV :
c. Rated voltage, kV (HV/LV) :
5. Temperature rise above 500C ambient
a. In oil by thermometer, 0C :
b. In winding by resistance, 0C :
c. Hot spot temperature in winding limited to, 0C :
6. Insulation class
:
7. Vector group
:
8. Type of tap changer with capacity/steps/range :
9. Tapping provided on HV side?
10. Losses
: Yes/No
a. No-load load loss at rated voltage and frequency :
b. Load loss at rated load :
c. Cooler loss
:
11. Impedance at rated current frequency :
12. Reactance at rated current and frequency, % :
13. Efficiency at 0.80 p.f lag % at 100%/75%/50% load :
14. Load/p.f. at which max. efficiency occurs, % full load :
Technical Specification:Sec-9,Miscellaneous
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