Catalogue / Transformer overhaul & oil filtration
Power transformer overhaul and oil reconditioning, Xtra seriesSample
by Krishna Infra Services (Sample) · verified by BARREL
Price on quote
Ordered and invoiced through BARREL — one contract, one GST invoice.
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The Xtra service of power transformer overhaul and oil reconditioning by Krishna covers 5 transformer rating options (1 MVA to 50 MVA). Design: core insulation resistance checks, leak testing before energisation and hot oil circulation under vacuum. Suited to captive power plants, solar and wind pooling substations and industrial distribution transformers. Delivered in line with IS 335 (Mineral Insulating Oil), IS 1866 (Oil Maintenance) and IEC 60422. Mobilisation Planned shutdown required; serves All India. Sample listing: illustrative data for testing BARREL Shop, not a real offer.
- Brand
- Krishna
- Model
- KRI-4C5 series
- Listing type
- Service
- Unit
- nos
- Minimum order
- 1 nos
- Lead time
- Planned shutdown required
- Warranty
- Oil quality guarantee 6 months
- Standards
- IS 335 (Mineral Insulating Oil), IS 1866 (Oil Maintenance), IEC 60422
- Delivers to
- All India
- GST rate
- 18 %
- Country of origin
- India
- Delivery terms
- Site mobilisation as per work order
- Returns
- Re-work of defective scope at no cost
- Other terms
- Sample data for testing; not a real offer.
Variants
| Variant | Specifications | Min. order · lead time | Price, ex GST |
|---|---|---|---|
| Transformer rating1 MVAKRI-4C5-01 | Transformer rating: 1 MVA | 1 nos · Planned shutdown required | on quote |
| Transformer rating5 MVAKRI-4C5-02 | Transformer rating: 5 MVA | 1 nos · Planned shutdown required | on quote |
| Transformer rating10 MVAKRI-4C5-03 | Transformer rating: 10 MVA | 1 nos · Planned shutdown required | on quote |
| Transformer rating20 MVAKRI-4C5-04 | Transformer rating: 20 MVA | 1 nos · Planned shutdown required | on quote |
| Transformer rating50 MVAKRI-4C5-05 | Transformer rating: 50 MVA | 1 nos · Planned shutdown required | on quote |
Specifications
| Transformer rating | 1 MVA to 50 MVA (see variants) |
|---|---|
| Service | Internal inspection and overhaulmade to order: Oil filtration and dehydration / Oil reclamation / Full overhaul with rewinding |
| Filtration machine | Vacuum dehydration 6000 L/hr |
| Oil BDV target | Above 70 kV |
| Moisture target | Below 10 ppmmade to order: Below 5 ppm |
| Testing | DGA, furan, BDV, tan deltamade to order: Full routine tests after overhaul |
| Spares | Bushings and OLTC parts at cost |
| Downtime | 5-7 days |
| Site work | Hot oil circulation at site |
| Crew | 4 technicians with supervisor |
| Certificate | Oil test report from NABL labmade to order: Overhaul report with test data |