Catalogue / Power transformers
Grid substation transformer with OLTC, Ultra seriesSample
by Narmadapushpak Power Transformers (Sample) · verified by BARREL
Price for verified buyers
Ordered and invoiced through BARREL — one contract, one GST invoice.
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The Ultra range of grid substation transformer with OLTC by Narmadapushpak covers 6 rating options (31.5 MVA to 500 MVA). Highlights: oil-tight tank, vacuum withstand tested, on-load tap changer with AVR and CRGO core with step-lap joints. Used by solar and wind evacuation, generator step-up and transmission utilities. Designed and tested to IS 2026, IEC 60076 and CBIP Manual 317. Lead time 16-24 weeks; delivers to All India and export (SAARC, Middle East, Africa). Sample listing: illustrative data for testing BARREL Shop, not a real offer.
- Brand
- Narmadapushpak
- Model
- NAR-274 series
- Listing type
- Product
- Unit
- nos
- Minimum order
- 1 nos
- Lead time
- 16-24 weeks
- Warranty
- 36 months from supply
- Standards
- IS 2026, IEC 60076, CBIP Manual 317
- Delivers to
- All India and export (SAARC, Middle East, Africa)
- GST rate
- 18 %
- Country of origin
- India
- Packaging
- Wooden crate, seaworthy
- Delivery terms
- FOR site, freight included
- Returns
- No returns on made-to-order items
- Other terms
- Sample data for testing; not a real offer.
Variants
| Variant | Specifications | Min. order · lead time | Price, ex GST |
|---|---|---|---|
| Rating31.5 MVANAR-274-01 | Rating: 31.5 MVA | 1 nos · 16-24 weeks | for verified buyers |
| Rating50 MVANAR-274-02 | Rating: 50 MVA | 1 nos · 16-24 weeks | for verified buyers |
| Rating100 MVANAR-274-03 | Rating: 100 MVA | 1 nos · 16-24 weeks | for verified buyers |
| Rating160 MVANAR-274-04 | Rating: 160 MVA | 1 nos · 16-24 weeks | for verified buyers |
| Rating315 MVANAR-274-05 | Rating: 315 MVA | 1 nos · 30-40 weeks | for verified buyers |
| Rating500 MVANAR-274-06 | Rating: 500 MVA | 1 nos · 30-40 weeks | for verified buyers |
Specifications
| Rating | 31.5 MVA to 500 MVA (see variants) |
|---|---|
| Voltage ratio | 220/132 kV |
| Cooling | ONAN/ONAF/OFAF |
| Vector group | Dyn11made to order: YNyn0 d11 / YNa0d11 |
| Tap changer | OLTC +/- 10% in 16 steps |
| Impedance | 12.5% |
| Insulation fluid | Natural ester |
| Core | CRGO M0H |
| Winding material | Copper |
| Conservator | Plainmade to order: Air cell |
| Noise level | < 75 dB(A) |
| Terminals | Oil-to-air bushingsmade to order: Cable box |
| Monitoring | Buchholz, OTI, WTI, PRV |