Catalogue / Servo stabilisers & isolation transformers
Dry-type isolation transformer (1:1), Prime 2 seriesSample
by Doaba Drives & Controls (Sample) · verified by BARREL
Price on quote
Ordered and invoiced through BARREL — one contract, one GST invoice.
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Dry-type isolation transformer (1:1) from Doaba, Prime 2 series: 4 rating options between 5 kVA and 50 kVA. Highlights: optional servo stabiliser for voltage regulation, vacuum pressure impregnated winding and thermal protection with sensor. Suited to medical and lab equipment, solar inverter isolation applications and IT and data centres. Designed and tested to IS 11171, IS 2026 and IEC 61558-2-4. Lead time 4-6 weeks; delivers to All India and export (SAARC, Middle East, Africa). Sample listing: illustrative data for testing BARREL Shop, not a real offer.
- Brand
- Doaba
- Model
- DOA-0B5 series
- Listing type
- Product
- Unit
- nos
- Minimum order
- 5 nos
- Lead time
- 4-6 weeks
- Warranty
- 24 months from supply
- Standards
- IS 11171, IS 2026, IEC 61558-2-4
- Delivers to
- All India and export (SAARC, Middle East, Africa)
- GST rate
- 18 %
- Country of origin
- India
- Packaging
- Wooden crate, seaworthy
- Delivery terms
- FOR nearest railhead
- Returns
- Returns within 15 days if unused, in original packing
- Other terms
- Sample data for testing; not a real offer.
Variants
| Variant | Specifications | Min. order · lead time | Price, ex GST |
|---|---|---|---|
| Rating5 kVADOA-0B5-01 | Rating: 5 kVA | 5 nos · 4-6 weeks | on quote |
| Rating10 kVADOA-0B5-02 | Rating: 10 kVA | 5 nos · 4-6 weeks | on quote |
| Rating25 kVADOA-0B5-03 | Rating: 25 kVA | 5 nos · 4-6 weeks | on quote |
| Rating50 kVADOA-0B5-04 | Rating: 50 kVA | 5 nos · 4-6 weeks | on quote |
Specifications
| Rating | 5 kVA to 50 kVA (see variants) |
|---|---|
| Primary voltage | 380-440 Vmade to order: 415 V / 230 V |
| Secondary voltage | 415 Vmade to order: 230 V / 110 V |
| Phases | 1-phmade to order: 3-ph |
| Winding | Coppermade to order: Aluminium |
| Shielding | Electrostatic shield between windings |
| K-factor | K4made to order: K1 / K13 |
| Insulation class | Class F |
| Cooling | ANmade to order: AF |
| Impedance | 3-5% |
| Temperature rise | Within 80 K |
| Enclosure | IP21 |
| Efficiency | > 97% |