Basic Technical Parameters - Roof Mounted Packaged Unit for Kolkata Metro Rolling Stock
| Sr.No. | Parameters |
|
| Electrical Requirement | ||
| 1 | Power Supply | 3 Phase, 415 V ± 5%, 50 Hz ± 3% |
| 2 | Power Consumption | 19 kW |
| Capacity | ||
| 1 | Cooling Capacity | 38.7 kW/11 Tr |
| 2 | Heating Capacity | N/A |
| Constructional Requirement | ||
| 1 | Design to Ambient | 32°C |
| 2 | Max Operating Temperature | 45°C |
| 3 | Dimension (LxWxH) | 2750x1850x470 mm |
| 4 | Material for Housing | SS 304 grade S2 Confirming to IS:6911 |
| 5 | Noise Level(Inside the Coach) | 70dB from 1 meter distance |
| 6 | Controller | Microprocessor Controller as per RDSO Spec. No.: RDSO/PE/SPEC/AC/0139-(Rev.1)-2009 |
| 7 | Refrigrant | R-407C |
| 8 | Weight | 850 kg |
| Service condition | ||
| 1 | Ambient | 50°C |
| 2 | Max. Temp. inside coach Under Sun | 70°C |
| 3 | Train Speed | 120 Km/h |
| 4 | Relative Humidity | Maximum Up to 98% |
| 5 | Atmosphere | Extremly dusty & desert weather |
| 6 | Shock & Vibration Srandard | IEC 61373 |