| STANDARDS | Energy efficiency level | 1 |
| STANDARDS | BEE Star Rating | 1 |
| STANDARDS | Installation, Testing and Demonstration | Yes . Excluding Civil work, No |
| STANDARDS | Minimum warranty on receipt of stores (in Months) | 30, 42, 54, 66, 78 |
| STANDARDS | Minimum warranty from the date of installation (in Months) | 24, 36, 48, 60, 72 |
| RATINGS | Nominal system voltage, HV ( in kV) | 11 |
| RATINGS | Nominal system voltage, LV ( in V) | 415 |
| RATINGS | Standard ratings (in kVA) | 500 |
| RATINGS | Minimum basic insulation level (in kVP) | 75 |
| RATINGS | No load voltage ratios (in Volts) | 11000/433-250 |
| RATINGS | Highest system voltage for equipment (in kV) | 12 |
| RATINGS | Rated lightning impulse withstand voltage (in kV Peak) (Refer IS:1180 (Part 1):2014 Annex-D) | 60, 75, 95 |
| CONSTRUCTION | Core mateial | CRGO (as per IS:3024 latest), Amorphous Core material (as per IS:16585 latest ) |
| CONSTRUCTION | Conductor (Winding) material | Aluminium, Copper |
| CONSTRUCTION | Type of Mounting | Pole Mounted, Ground Mounted |
| CONSTRUCTION | Noise level at rated voltage and freqeuncy, Maximum (in dB) | 45, 48, 51, 55 |
| TRANSFORMER TANK | Transformer tank cover construction | Non-sealed, Bolted, Non-sealed, Clamped, Non-sealed, Welded, Sealed |
| TRANSFORMER TANK | Tank configuration with | With radiator fins, With out radiator fins, Cooliong tubes, Corrugated panels, Min. 1 mm thick |
| TRANSFORMER TANK | Material of transformer tank | Stainless steel, Mild Steel |
| TRANSFORMER TANK | Minimum thickness of top and bottom material of transformer tank (in mm) | 5, 6, 7, 8, 9, 10 |
| TRANSFORMER TANK | Minimum thickness of side material of transformer tank (in mm) | 3.15, 4, 4.5, 5, 6 |
| TRANSFORMER TANK | Material of Bolts/Nuts/Wahers exposed to atmosphere | Stainless steel (for upto 12 mm size), Brass (for upto 12 mm size), Electro Galvanized (for above 12 mm size), Hot Dip Galvanized (for above 12 mm size) |
| TRANSFORMER TANK | Gaskets wherever used shall conform to | Type III (as per IS:11149) Type C (as per IS:4253 (Pt.2), Type IV (as per IS:11149) NBR |
| TRANSFORMER TANK | Provision of conservator | Yes , for Non sealed type with Plain tank construction, No |
| Painting | Type of painting on inside of tank (hint: Refer Table 12 of IS:1180 (Pt.1):2014) | Varnish, Oil resistant paint |
| Painting | Type of painting on External surface of tank (hint: Refer Table 12 of IS:1180 (Pt.1):2014) | Epoxy (Primer), Polyurethane (finish coat) |
| TAP CHANGER | Winding tapped | HV |
| TAP CHANGER | No. of positions (in Nos.) | 7 |
| TAP CHANGER | Voltage variation | +5% to -10% in steps of 2.5% for variation of HV, +5% to -15% in steps of 2.5% for variation of HV |
| TERMINAL ARRANGEMENT | Transformer fitted with bushings of appropriate voltage and curent ratings on HV side | Yes. 3 Nos. (Conforming to IS:2099) |
| TERMINAL ARRANGEMENT | Transformer fitted with bushings of appropriate voltage and curent ratings on LV side | Yes. 4 Nos. (Conforming to IS:7421) |
| TERMINAL ARRANGEMENT | Suitable provision for adoption of cables of suitable size on LV side | Yes. For PVC/XLPE Cables, No |
| TERMINAL ARRANGEMENT | Cable End Box on HV side | Yes, No |
| TERMINAL ARRANGEMENT | Cable End Box on LV side | Yes, No |
| MARKING | Material of rating plate | Anodized aluminium, Stainless steel |
| MARKING | Marking method on rating plate | Etching, Engraved, Stamped |
| MARKING | Rating and terminal marking plates combined into one plate | Yes, No |
| OPTIONAL FITTINGS | Suitable rating lightning arrestors | HT Side, 1 No. per phase, No |
| OPTIONAL FITTINGS | Bird guard | Yes, No |
| OPTIONAL FITTINGS | Terminal connectors | Yes, No |
| OPTIONAL FITTINGS | Oil temperature indicator and widning temperature indicator | Yes, No |
| OPTIONAL FITTINGS | Jacking pads | Yes for transformer above 1600 KVA, No, Yes |
| OPTIONAL FITTINGS | Buchholz relay | Yes, NoMagnetic oil level gauge with low oil level alarm contact |
| OPTIONAL FITTINGS | Magnetic oil level gauge with low oil level alarm contact | Yes for transformer above 1600, No, Yes |
| OPTIONAL FITTINGS | Non return valve | Yes, No |
| OPTIONAL FITTINGS | Protection relay for sealed type transformers for internal parameters that is pressure, temperature, oil level and gas detection | Yes, No |
| OPTIONAL FITTINGS | Unidirectional flat rollers | Yes, No |
| OPTIONAL FITTINGS | Drain cum sampling valve | Yes with steel plug (for transformers upto 500 KVA), No, Yes |
| OPTIONAL FITTINGS | Self protection / disconnection devices | On secondary side (as per IS/IEC:60947-2:2003, No |
| OPTIONAL FITTINGS | Expulsion fuse as disconnection device | On Primay side (as per IS:9385 (Part 2):1980, No |
| SERVICE CONDITION | Maximum altitude | <1000 m, <5000 m |
| TEST REPORTS & CERTIFICATIONS | Availability of type test reports to prove the confirmity of the specification from | Central Govt. Lab (Govt. Of India), NABL Accrediated, ILAC accrediated |
| TEST REPORTS & CERTIFICATIONS | Agreed for stage Inspection as required by buyer | Yes |
| SPECIAL TEST REPORTS | Availability of test report for Determination of sound level test | Yes, No |
| SPECIAL TEST REPORTS | Availability of test report for short circuit withstand test | Yes, No |
| SPECIAL TEST REPORTS | Availability of test report for No load current at 112.5 % Voltage | Yes, No |
| SPECIAL TEST REPORTS | Availability of test report for Paint adhesion test | Yes for 1 No., No, Yes for all units |
| SPECIAL TEST REPORTS | BDV and moisture content of oil in the transformer | Yes for 1 No., No, Yes for all units |
| SPECIAL TEST REPORTS | Other requirements | Losses and Impedance values as per Cl.7.8 and Table 6 of IS:1180 (Part 1):2014 latest, Limits of temeprature-rise as per Cl.7.10 of IS:1180 (Part 1):2014 latest |
