H59 HV/LV distribution transformer

Vector group: Dyn0, Dyn11, Yzn11; short‑circuit impedance 4% or 6% optional at 75℃.

As 10kV oil-immersed transformers, H59 must meet the Level 3 energy efficiency limit of GB 20052 to be legally sold. Most standard products reach Level 3 (equivalent to the S13 level). However, as they are not specifically positioned for extreme energy savings, they usually do not apply for Level 1 or Level 2 energy-saving certifications. If a project strictly requires Level 1 efficiency, the S22 model should be selected.

Yes, customized manufacture is available. We provide complete solutions including design, assembly and testing according to project requirements.

H61 is a small-capacity (≤160kVA) hermetically sealed pole-mounted distribution type with epoxy plug‑in bushings and no oil conservator, while H59 is its upgraded version, covering 50–800kVA+ with improved insulation and heat dissipation.

We offer 5‑10 years warranty. Standard projects get 5‑year warranty; pole‑mounted / rural electrification projects can qualify for 10‑year warranty for manufacturing‑related defects. Damage from misuse is excluded.

H59 three‑phase oil‑immersed transformer complies with IEC and NF C52 power‑equipment standards.