Hermetically sealed corrugated tank distribution transformers are designed for reliable medium-voltage power distribution with minimal maintenance. The fully sealed structure eliminates oil conservator and prevents moisture ingress, helping keep insulation quality stable over long service periods.
With a typical capacity range of 50–500 kVA, this transformer is widely used in standardized utility distribution networks, industrial facilities, commercial infrastructure, and rural electrification projects where outdoor operation, simple maintenance, and long-term stability matter.
The corrugated tank acts as both the oil expansion element and the cooling surface. It improves heat dissipation efficiency while allowing the oil volume to expand and contract naturally with temperature changes, reducing leakage risk and lowering routine service requirements.
Designed for outdoor installation, the transformer can be configured to match local grid practices, including common primary/secondary voltages, vector groups, tap ranges, and terminal/bushing options. It can be supplied according to IEC / IEEE practices to meet typical utility specifications and project procurement requirements.
