Catalogue values for Isolation Transformer
| Category | Specification | Bid Requirement (Allowed Values) |
|---|---|---|
| CONSTRUCTION | Isolation transformer suitable for installed at | Inside the Lighting Distribution Board (LDB), at Welding DB panel itself, By the side of respective LDB, By the side of respective Welding DB, Inside Neutral Grounding Cubicle |
| GENERIC | Description of store | Isolation transformer for Neutral Grounding |
| Rating (in KVA) | 20 | |
| No. of phase (in Nos.) | 1 | |
| Winding connection HV/LV | Not applicable for Isolation transformer for Neutral Grounding | |
| Voltage ratio | 415/415V, +/- 5% taps (OCTC) in steps of 2.5% | |
| Insulation class | F | |
| One minute power frequency withstand voltage (in KV) | 2.5 | |
| Material of enclosure | Not applicable for Isolation transformer for Neutral Grounding | |
| Enclosure protection (IP Rating), Ref. IS/IEC:60947 latest | Not applicable for Isolation transformer for Neutral Grounding | |
| Enclosure protection transformer terminal box (IP Rating), Ref. IS/IEC:60947 latest | Not applicable for Isolation transformer for Neutral Grounding | |
| FITTINGS FOR EACH TRANSFORMER | Number of Termination insulators (hint: If not applicable select "0") | 0 |
| Number of Winding temperature indicator (s) with alarm and trip contact (as applicable) (hint: If not applicable selet "0") | 0 | |
| Number of Cover lifting eyes (hint: If not applicable select "0") | 0 | |
| Number of Transformer lifting lugs (hint: If not applicable select "0") | 0 | |
| Number of Core and winding lifting lugs (hint: If not applicable select "0") | 0 | |
| Number of Earthing terminals (hint: If not applicable select "0") | 0 | |
| Number of Cable boxes (hint: If not applicable write "0") | 0 | |
| Number of Tap changing links | Not applicable | |
| Other requirements for each transformer | Supporting structure, Foundation Bolts, Rating and diagram plate, Towing holes | |
| TESTS | Agreed to furnish additional routine test reports for | Insulation resistance, Iron loss, Paint shade, thickness/adhesion, Enclosure sheet thickness, Not applicable |
| Agreed to furnish special test reports to buyer /consignee on demand | Not applicable | |
| Agreed for stage inspection as and when required by buyer / consingee | Insulation resistance,Iron loss,Paint shade, thickness/adhesion,Enclosure sheet thickness | |
| CERTIFICATIONS | Agreed to furnish Guaranteed Technical Particulars (GTP) and complete drawings of Transformer as and when required by buyer / consignee | Yes |
| Availability of Type test reports to prove conformity of the specification | NABL AccreditedLab | |
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