icle No th position Article No supplement th B3VH-15-C Bevel-helical gear Reduction Box B3

Flender/Flender Gear Units/Bevel-helical gear Reduction Box B3

One minute power frequency withstand voltage (kV rms) 2 4. Peak impulse test withstand voltage (kVp) 6 5. Short circuit level consid ered for winding design (MVA) 4 Transformers shall be capable of delivering rated current at an applied voltage up to 1% rated voltage without exceed ing the temperature limits. Overload capacity of the transf ormer shall be as per IEC 6- 1 ( unless specified otherwise. Shall be operable at its rated capacity at any tap with voltage variation of + 1% of corresponding to voltage of the particular tap. Inter turn and inter coil insulat ion shall be designed such tha dielectric stress is uniformly distributed throughout the windings under all operati ng conditions. 1 of 1 INDRADHANUSH GAS GRID LIMITED TECHNICAL SPECIFICATION FOR NATURAL GAS COMPRESSOR STATION FOR NORTH EAST GAS GRID PIPELINE PROJECT ______________________________________________________________________________________________ TS NO.: MEC//2UU/0/2/0 Electrical system Chapter-0.0 2, MECON Limited, All Right Reserved Pag 7 of 2 Transformers shall be designed to withstand the thermal and dyn amic stresses due to short circuits at its terminals or symmetrical/ asymmetrical faults on any winding. Short circuit withstand capacity for the bolted fault at the secondary terminals shall not be less than 2 second duration as specified in IS 2-Part 5 with respect to fault level specified. The maximum temperature at the end of the specified duration sh all not be more than 2C with the temperature prior to short circuit correspo nding to maximum permissible overload. The transformer should withstand the extreme load variation wit hout any cracking of the casting. For this test cer tificate of Environmental (E, Climatic (C and Fire behavior (F, according IEC 6-1 shall be furnishe . 4.0 MECHANICAL DESIGN Transformer enclosure shall be elded/ bolted C