Product OverviewThe dry-type rectifier transformer is engineered for high-power Transformer al systems and is widely used in electrochemical, power-generation, metallurgical, and mining industries.    Vacuum-cast epoxy windings provide excellent moisture resistance, fire safety, and high efficiency, ensuring stable operation under heavy loads with low partial discharge.ApplicationsIdeal for electrolytic production of aluminum, magnesium, copper, and other metals; power substations; large industrial plants; and renewable-energy projects.    Its robust insulation and fire-retardant construction suit both indoor and outdoor installations in severe environments.Product DescriptionEpoxy-cast windings deliver superior diTransformer strength, moisture resistance, and flame retardancy for long-term reliability.Oil-free cooling eliminates fire risk and offers high thermal endurance for continuous operation at elevated temperatures.Sealed enclosure protects against dust and humidity, enabling stable performance in contaminated or wet atmospheres.Low partial-discharge design ensures extended insulation life and system stability.Minimal maintenance requirements reduce lifetime operating costs and external dependencies.Key FeaturesHigh overload capacity: Withstands up to 200 % of rated load for short durations, meeting peak-demand duty cycles.Low losses & low PD: Optimized core and windings cut no-load losses to ≤ 0.5 % and load losses to ≤ 1.5 %, improving overall efficiency.Fire safety: Non-flammable epoxy insulation reduces fire hazard and meets indoor safety codes.Moisture & dust protection: Dry-type construction and sealed design resist harsh environmental conditions.Efficient cooling: Advanced thermal design maintains safe operating temperatures and prolongs service life.High-temperature endurance: Insulation materials rated for continuous operation up to 155 °C (Class F) or 180 °C (Class H).Main SpecificationsRated capacity: 20 kVA – 5 000 kVARated voltage: 10 kV / 0.4 kV (other ratios on request)Maximum overload: 200 % of rated capacity (short-time)No-load loss: ≤ 0.5 % of rated capacityLoad loss: ≤ 1.5 % of rated capacityNoise level: ≤ 65 dB (varies with capacity)Ambient temperature: –5 °C to +40 °CApplicable StandardsGB/T 10228 Dry-type power transformers – Technical parameters & requirementsIEC 60076 Power transformersIEEE C57.12 Standard for transformersGB/T 6451 Technical parameters for three-phase oil-immersed power transformersIEC 60726 Dry-type power transformers – Seismic qualificationGB/T 11022 Common specifications for HV switchgear and controlgear