{"id":2258,"date":"2026-01-10T03:52:37","date_gmt":"2026-01-10T03:52:37","guid":{"rendered":"https:\/\/powernextransformer.com\/?post_type=product&p=2258"},"modified":"2026-01-10T06:56:27","modified_gmt":"2026-01-10T06:56:27","slug":"75-kva-marine-isolation-transformer-440v-to-220v-for-shipboard-power-distribution","status":"publish","type":"product","link":"https:\/\/powernextransformer.com\/zh\/manufacturer\/75-kva-marine-isolation-transformer-440v-to-220v-for-shipboard-power-distribution\/","title":{"rendered":"75 kVA Marine Isolation Transformer 440V to 220V for Shipboard Power Distribution"},"content":{"rendered":"

Introduction<\/h2>\n

The 75 kVA Dry-Type Marine Isolation Transformer<\/a> 440V to 220V is a premium, oil-free transformer solution designed for shipboard, offshore, and industrial marine electrical systems. Featuring air natural (AN) cooling, high-efficiency epoxy insulation, and robust mechanical design, this transformer provides safe electrical isolation, stable step-down voltage conversion, and reliable operation in harsh marine environments.<\/p>\n

Unlike oil-immersed transformers, the dry-type design eliminates the risks associated with oil leaks and fire hazards, making it ideal for ship cabins, control rooms, offshore platforms, and industrial vessels. PowerNex, a leading China-based transformer manufacturer, OEM supplier, and global distributor, delivers this transformer factory-direct to international markets including USA, Canada, Brazil, Argentina, Australia, Indonesia, Malaysia, Philippines, UAE, Saudi Arabia, Russia, Germany, France, South Africa, Venezuela, Mexico, New Zealand, and other regions.<\/p>\n

Designed for single-phase and three-phase configurations, this 75 kVA marine isolation transformer supports standard and customized specifications, voltage step-down conversion from 440V to 220V, and optional connection configurations, ensuring reliable power delivery for sensitive shipboard equipment, offshore installations, and industrial marine systems.<\/p>\n

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Technical Specifications and Parameters<\/h2>\n

Below is a comprehensive technical specification table<\/strong> for the 75 kVA Dry-Type Marine Isolation Transformer. This table covers more than ten critical parameters, providing clarity for procurement, design, and engineering teams.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nSpecification<\/th>\nNotes<\/th>\n<\/tr>\n
Power Rating<\/td>\n75 kVA<\/td>\nSupports a capacity range of 30 kVA to 5000 kVA for diverse marine applications<\/td>\n<\/tr>\n
Transformer Type<\/td>\nDry-Type, Air-Cooled, Oil-Free<\/td>\nSafe, fire-resistant, minimal maintenance required<\/td>\n<\/tr>\n
Phase Configuration<\/td>\nSingle-Phase & Three-Phase<\/td>\nSupports small circuits and industrial vessel systems<\/td>\n<\/tr>\n
Primary Voltage<\/td>\n440V AC<\/td>\nStandard shipboard input voltage; customizable<\/td>\n<\/tr>\n
Secondary Voltage<\/td>\n220V AC<\/td>\nWye or Delta output; step-down voltage conversion<\/td>\n<\/tr>\n
Frequency<\/td>\n50Hz \/ 60Hz<\/td>\nCompatible with international marine and offshore grids<\/td>\n<\/tr>\n
Cooling Method<\/td>\nAir Natural (AN)<\/td>\nNo oil, minimal maintenance, suitable for confined spaces<\/td>\n<\/tr>\n
Insulation Class<\/td>\nF \/ H<\/td>\nEpoxy insulation ensures high-temperature tolerance and long life<\/td>\n<\/tr>\n
Efficiency<\/td>\n\u2265 98%<\/td>\nLow-loss, energy-efficient continuous operation<\/td>\n<\/tr>\n
Voltage Regulation<\/td>\n\u00b12 \u00d7 2.5% Off-Circuit Tap Changer<\/td>\nPrecise voltage adjustment for sensitive shipboard equipment<\/td>\n<\/tr>\n
Short-Circuit Withstand<\/td>\nHigh Mechanical & Electrical Strength<\/td>\nSafe under marine short-circuit or fault conditions<\/td>\n<\/tr>\n
Operating Environment<\/td>\n-10\u00b0C to +45\u00b0C, Altitude \u2264 1000m<\/td>\nOptional derating for extreme offshore climates<\/td>\n<\/tr>\n
Protection Features<\/td>\nOvertemperature Sensors, PT100\/PTC optional<\/td>\nPrevents overheating, ensures crew safety<\/td>\n<\/tr>\n
Enclosure<\/td>\nNEMA 1 Indoor \/ NEMA 3R Outdoor optional<\/td>\nMarine-grade epoxy enclosure for ship cabins, decks, or offshore rooms<\/td>\n<\/tr>\n
Certifications<\/td>\nIEC, ANSI, IEEE, CE, UL, cUL, CSA, SGS<\/td>\nGlobal compliance for shipboard and industrial marine systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
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