7 220 V & 48 V DC SYSTEMS

7.1 Guaranteed Technical Particulars

Item Parameter Units Contractor's Data1 220 V battery charger1.1 Type / designation - STATIC TYPE/ AS PER MANUFATURER STD.1.2 Capacity A Shall be furnished during detail engg.1.3 DC Rated voltage UN

- Boost charger V As per tender specification- Float charger V As per tender specification

1.4 DC rated current IN- Boost charger A Shall be furnished during detail engg.- Float charger A Shall be furnished during detail engg.

1.5 Maximum ripple of output voltage (peak to peak)- with the battery connected

% UN < 1.5 % RMS

- without the battery connected

% UN < 1.5 % RMS

1.6 Protection class of cubicle

IP41

3 220V DC battery3.1 Type - VRLA TYPE3.2 Battery capacity at

25°C at 10 hoursAh 400Ah

3.3 Number of cells per battery bank

Nos To meet sys required voltage

3.4 Type of cells3.5 Voltage per cell V 2V3.6 Rated voltage UN V Shall be furnished during detail engg.3.7 Float charging voltage V 2.23±0.013.8 Normal charging

currentA Shall be furnished during detail engg.

3.9 Boost Voltage V Shall be furnished during detail engg.3.10 Discharge end voltage V Shall be furnished during detail engg.3.11 48 V DC - Converter5 220 V DC main

distribution board5.1 Type designation Shall be furnished during detail engg.5.2 Number of boards Nos 25.3 Power frequency

withstand voltage, 1 KV As per tender specification

min.5.4 Rated current of

incoming feeder and Busbar

A As per tender specification

5.5 Short-circuit withstand current (1 s)

kA As per tender specification

5.6 Protection class of cubicle

As per tender specification

6 Inverter6.1 Type designation/

capacity- Shall be furnished during detail engg./15kVA

6.2 DC supply- input voltage V 48/220- maximum admissible variation of input voltage

% As per tender specification

6.3 AC output- rated voltage UN V 240Vac- rated current IN A As per tender specification

- number of phases- rated output kVA As per tender specification

6.4 Short time overload capability for 1 sec

%IN As per tender specification

6.5 Maximum distortion factor of voltage waveform

% As per tender specification

6.6 Protection class of cubicle

As per tender specification

7 220 V & 48 V DC SYSTEMS7.2 Informative Data

Item Parameter

Units Contractor's Data1 General

1.1 Manufacturer As per BHEL approved make1.2 Place of manufacture - Shall be furnished during detail

engg1.3 Applicable standards - IS standard2 220 V Battery charger

2.1 Make - As per BHEL approved make2.2 Applicable standards - IS-4540/IEC-601462.3 AC supply

- voltage V 415 VAC±10%- number of phases Nos. 3

- frequency Hz 50Hz- maximum power consumption at ratedoutput

kW As per tender specification

2.4 Weight of complete charger cubicle Kg Shall be furnished during detail engg2.5 Overall dimensions of complete charger

cubicle (LXWXH)mm Xmm X mm Shall be furnished during detail

engg

4 220 V DC battery4.1 Make - As per BHEL approved make4.2 Applicable standards - IS-16514.3 Heat losses at rated output kW Shall be furnished during detail

engg

4.4 Battery fuse rating A Shall be furnished during detail engg

4.5 Expected life Years As per tender specification4.6 Internal resistance

- of one cell Ohm Shall be furnished during detail engg

- of complete battery Ohm Shall be furnished during detail engg

4.7 Weights

- of one cell Kg 107.0 ± 5% ( 4 cell module) approx

- of complete battery including racks Kg Depends on no of cells.

4.8 Overall dimensions of complete cubicle (LXWXH)

mm Xmm X mm Depends on battery layouts.

6 220V DC distribution board6.1 Make - As per BHEL approved make6.2 minimum number of outgoing feeders Nos As per requirment6.3 Rated current of incoming feeder and

busbarA Shall be furnished during detail

engg6.4 Rated current of outgoing feeders A Shall be furnished during detail

engg6.5 Overall dimensions of complete cubicle (L X W X H) Shall be furnished during detail

engg6.6 48V DC DCDC Converter mm Xmm X mm Shall be furnished during detail

engg