Mastervolt
Mastervolt Mass Gi 7 Isolation Transformer (7000VA / 230V)
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Mass GI 7 is a 7000 VA (32 A) galvanic isolation transformer that creates a safe, fully isolated connection between your vessel and the shore supply. By galvanically separating the shore earth from the onboard system, it prevents electrolytic (stray-current) corrosion of underwater metal parts while keeping the installation safely earthed.
It uses Mastervolt's high-frequency switching technology, making it around 75% lighter and 60% smaller than a conventional low-frequency transformer. An integrated Soft Start handles inrush peaks when connecting to the grid, and LED indicators on the casing show load and overload status. The unit accepts a wide 90 to 255 V input across 45 to 65 Hz, so it works on shore supplies worldwide.
The robust aluminium case can be mounted in any position on a wall or floor without rubber mounts, as the unit does not hum or vibrate. For higher capacity, units can be coupled in parallel: two 16 A/3.5 kW units give 32 A/7 kW and four units give 64 A/14 kW. The Mass GI 7 is MasterBus compatible and can be remote controlled.
PRODUCT DETAILS
- 7000 VA / 32 A continuous output (230 V)
- Galvanic isolation prevents stray-current corrosion
- High-frequency technology: around 75% lighter and 60% smaller than low-frequency transformers
- Integrated Soft Start handles grid inrush peaks
- Wide input range 90 to 255 V, 45 to 65 Hz
- Parallel coupling for higher capacity (up to 64 A/14 kW with four units)
- LED load and overload indication; MasterBus compatible and remote controllable
- Robust aluminium case, mounts in any position without rubber mounts
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General
| Power 230 V (120 V) | 7000 VA (3840 VA) |
| Nominal input current (230 V) | 32 A |
| Output voltage (+/- 5%) | 90-255 V |
| Output frequency range | 45-65 Hz |
| Input voltage range | 90-255 V |
| Input frequency range | 45-65 Hz |
| Galvanic isolation | Yes |
| Efficiency | > 93 % |
| Compliance | CE, ABYC |
Physical
| Dimensions (HxWxD) | 340 x 261 x 250 mm |
| Weight | 10 kg |
Technical
| Technology | High frequency |
| Earth leakage protection | No |
| No-load power consumption | 44 W |
| Temperature range (ambient) | 0 °C to 40 °C, derating power > 40 °C |
| Cooling | Variofan |
| Switch off at | 80 °C |
| Protection degree | IP23 |
| Operating humidity | Max. 95 % |
| Switch off behaviour | Breaker B-characteristic |
| Soft start | Yes |
| MasterBus compatible | Yes |
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