Voltamp Transformers' EBITDA margin contracted by 390 basis points to 15.5% in Q2 FY27, compared with 19.4% in Q2 FY26. The decline in margins came despite healthy growth in revenue and an improvement in profitability. The company's revenue in Q2FY27 rose 41.8% to Rs 684.19 crore from Rs 482.56 crore, year-on-year (YoY).