9 kVA Transformer
9 KVA, 415/190 V, 3 Phase Dry Type Distribution Transformer
Specification No. RDSO/PE /SPEC/TL/0158-2010 (Rev.0)
Description :
- 9 kVA, 3-phase, dry-type, natural/air-cooled distribution transformer.
- Engineered for LHB-type non-AC EOG railway coaches.
- Steps down 750 V AC (from power cars) to 415 V/190 V AC.
- Supplies power for train lighting (TL) loads such as fans and lights.
- Built as per RDSO specification RDSO/PE/SPEC/TL/0158-2010 (Rev.0) ensuring safety, reliability, and railway compatibility.
Technical Specifications :
| Parameter | Specification |
|---|---|
| Input Voltage (AC) | |
| Nominal Voltage | 3 Phase, 4 wire, 750 V ± 5% (line to line), 50Hz +3%, THD <10% |
| Nominal Input Line Current | 6.92 A at 750 V |
| Output (AC) | |
| Power | 9 KVA |
| Output Voltage | 3 Phase, 4 wire, 415 V ± 5%, 50Hz ±3%, 4.5 KVA 3 Phase, 4 wire, 190 V ± 5%, 50Hz +3%, 4.5 KVA |
| Nominal Output Current | 6.26 A at 415 V (4.5 KVA winding) 13.67 A at 190 V (4.5 KVA winding) |
| Efficiency | >96% from half load to full load |
| Class of Insulation | H |
| Noise Level | <60 db at 1.0 m distance |
| Protections | |
| Vector Configuration | Star – Star – Star (Yyy) |
| IP Protection | IP-67 |
| Winding Wire | Super enameled copper as per IS: 13730 Pt.13, Pt.29 |
| Max. Temp Rise | 115°C |
| Total Weight | 200 Kg (Max.) |
| Construction | |
| Enclosure | 2.0 mm thick SS 304 |
| Top Cover | 5.0 mm thick SS 304 |
| Dimensions (L × D × H) | 970 × 560 × 650 mm |
| Mounting | 360 × 215 mm / 500 × 215 mm |
| Weight | Less than 200 Kg |
| Cooling | Natural air cooled |