Isolation Transformer and Autotransformer, isolation transformers and autotransformers
Country: Netherlands · Model: Isolation Transformer / Autotransformer
The range includes isolation transformers rated 2,500, 4,500 and 8,000 W and 120/240 V autotransformers for 32 and 100 A. They connect a vessel to shore power safely and match voltages between different standards within systems.
- Isolation
- 2,500, 4,500, 8,000 W
- Autotransformers
- 120/240 V, 32 A and 100 A
- Purpose
- galvanic isolation of shore power, voltage step-up/step-down, split-phase balancing
Technical specifications
| Isolation | 2,500, 4,500, 8,000 W |
|---|---|
| Autotransformers | 120/240 V, 32 A and 100 A |
| Purpose | galvanic isolation of shore power, voltage step-up/step-down, split-phase balancing |
| Customs codes (for reference) | |
| HS code | 8504.31 |
| UKTZED code (Ukraine) | 8504318000 (dry ≤1 kVA); 8504320090 (dry 1–16 kVA); 8504330090 (dry 16–500 kVA); 8504340000 (dry >500 kVA) |
| CN code (EU) | 85043180 (dry ≤1 kVA); 85043200 (dry 1–16 kVA); 85043300 (dry 16–500 kVA); 85043400 (dry >500 kVA) |
Replacement for
isolating OSM1, TSZI; OSM1-2.5…4 kVA; no specialised analogue for ship shore power
selected by purpose and main parameters, please confirm with the manager
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
An isolation transformer galvanically separates the onboard network from shore power, so the vessel has no direct electrical link to the dock supply. The hull and underwater gear are no longer tied to the dock earth, and stray currents from nearby boats stop eating the propeller shaft and anodes. Reversed polarity at the shore socket does not reach the boat either, since the secondary winding forms its own network. The autotransformer steps voltage up or down between the 120 V and 240 V levels. In split-phase systems it also balances the load across the legs when an inverter or generator supplies a single phase. The 32 A and 100 A versions differ in permissible current.
How to choose
Pick the isolation model by the power the boat draws from shore, with margin for charger, water heater and air conditioning running together. 2,500 W suits a small boat with a charger and lighting, 4,500 W a yacht with a galley, and 8,000 W a large vessel with air conditioning. A 32 A autotransformer goes on a single shore line or inverter output, a 100 A unit on the main switchboard. Charging batteries from shore after the transformer needs a charger such as a Skylla with a 90–265 V AC input.
Request a price and lead time
Isolation Transformer and Autotransformer, isolation transformers and autotransformers. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What power ratings do isolation transformers come in?
Isolation transformers are made in 2,500, 4,500 and 8,000 W ratings.
What current is the 120/240 V autotransformer rated for?
The 120/240 V autotransformer comes in 32 A and 100 A versions.
Is the autotransformer suitable for split-phase balancing?
Yes, the 120/240 V autotransformer is used to balance load in split-phase systems.
Why does a boat need an isolation transformer?
It removes the direct link between the onboard and dock networks, protecting the hull from galvanic corrosion and from shore socket polarity faults.
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Need a price, lead time or replacement?
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