Catalogue / Transformer overhaul & oil filtration
Bushing and OLTC replacement, Smart 7 seriesSample
by Maduraisurya Technical Services (Sample) · verified by BARREL
Price on quote
Ordered and invoiced through BARREL — one contract, one GST invoice.
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The Smart 7 service of bushing and OLTC replacement by Maduraisurya covers 3 transformer rating options (10 MVA to 50 MVA). Key features: oil sampling and DGA before work, leak testing before energisation and core insulation resistance checks. Typically used for solar and wind pooling substations, captive power plants and state utility asset life extension. Delivered in line with IS 335 (Mineral Insulating Oil), IS 1866 (Oil Maintenance) and IEC 60422. Mobilisation Mobilisation in 3-5 days; serves All India. Sample listing: illustrative data for testing BARREL Shop, not a real offer.
- Brand
- Maduraisurya
- Model
- MAD-619 series
- Listing type
- Service
- Unit
- nos
- Minimum order
- 1 nos
- Lead time
- Mobilisation in 3-5 days
- Warranty
- Workmanship 12 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 rating10 MVAMAD-619-01 | Transformer rating: 10 MVA | 1 nos · Mobilisation in 3-5 days | on quote |
| Transformer rating20 MVAMAD-619-02 | Transformer rating: 20 MVA | 1 nos · Mobilisation in 3-5 days | on quote |
| Transformer rating50 MVAMAD-619-03 | Transformer rating: 50 MVA | 1 nos · Mobilisation in 3-5 days | on quote |
Specifications
| Transformer rating | 10 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 | Mobile 12000 L/hrmade to order: 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 | 3-4 weeks |
| Site work | Workshop repair |
| Crew | Specialised overhaul team |
| Certificate | Oil test report from NABL labmade to order: Overhaul report with test data |