მოგესალმებით, გთხოვთ მოგვცეთ ინფორმაცია ძალოვანი ტრანსფორმატორის გრაგნილები სპილენძით უნდა იყოს შესრულებული თუ ალუმინით?

Additionally, please confirm whether equipment manufactured in China is acceptable for participation in this tender.

Please provide answers to the following questions: 1. Electrical Parameters 1.1. Please confirm the rated HV/LV voltages for each transformer type and the allowable voltage tolerances (%). 1.2. Please specify the rated system frequency (50 Hz / 60 Hz). 1.3. Please indicate the required winding connection vector group (e.g. Dyn11, Yyn0, Yzn, etc.). 1.4. Please specify the required short-circuit impedance voltage (%Uk). 1.5. Please confirm the insulation class and permissible temperature rise of windings and oil. 1.6. Please specify the allowable overload capacity (percentage and duration). 2. Losses and Efficiency 2.1. Please specify the maximum allowable no-load losses (P₀) for each transformer rating. 2.2. Please specify the maximum allowable load (short-circuit) losses (Pₖ). 2.3. Are there any specific energy efficiency class requirements or loss limits? If yes, please specify the applicable standard. 3. Design and Construction 3.1. Please confirm whether the transformers are intended for indoor or outdoor installation. 3.2. Please specify the climatic and environmental conditions, including the operating temperature range. 3.3. Please indicate the required cooling method (ONAN / ONAF or other). 3.4. Please specify the required tank design (radiator type / smooth tank). 3.5. Please confirm whether the following accessories are mandatory: • Buchholz relay; • Oil level indicator; • Oil temperature indicator; • Winding temperature indicator; • Pressure relief valve; • Oil sampling valve. 4. Voltage Regulation 4.1. Please specify the required voltage regulation method: off-circuit tap changer (OCTC) or on-load tap changer (OLTC). 4.2. Please indicate the voltage regulation range (%). 4.3. Please specify the tap step size and number of tapping positions. 5. Testing and Documentation 5.1. Please confirm the scope of mandatory factory tests (Routine / Type / Special tests). 5.2. Is the presence of the Client’s representative required during Factory Acceptance Tests (FAT)? 5.3. Please specify the list of mandatory documentation to be provided with the equipment: • Test reports; • Technical datasheets / паспорта; • Certificates of conformity; • Certificate of Origin (COO). 5.4. Please specify the required language of the technical documentation.