Mastervolt Mass GI 7 Isolation Transformer

The Mass GI is an isolation transformer, based on
switch mode technology, providing you with separation between AC
shorepower and the boat’s onboard AC electrical
system.

Preventing galvanic corrosion in your vessel’s metal underwater
gear, hull or other electrically-connected parts is critically
important to prevent expensive damage. If you travel to harbors
with questionable shorepower systems, or if neighboring boats may
be transmitting stray current, galvanic isolation is necessary.

Key Features

Features:

• Small, light high-frequency design: The Mass
  GI 7 is an extremely small and lightweight isolation transformer
  that includes the latest high-frequency electronics switch
  technology. This ensures surges and differences in electrical
  polarity are handled with ease.
• Install multiple units for more capacity:
  Suitable for 120V and 230V AC systems, its capacity can be parallel
  coupled for higher capacity. Two units correspond to double its
  size.
• Maintains the same voltage and frequency:
  Isolation transformers like the Mass GI 7 maintain the incoming
  line voltage and frequency. Compatible with 90 to 255V AC and 45 to
  654Hz frequency. 
• Quiet and versatile: The Mass GI isolation
  transformer can be fitted in any position on a wall or floor. No
  rubber mountings are necessary because it does not vibrate or
  hum.
• Integrated Soft Start: The integrated Soft
  Start manages the current resulting from connection to the shore. A
  LED indicator on the box displays load data.
• Data link to MasterBus: Mass GI
  communicates via the MasterBus network for remote control and
  remote (alarm) monitoring of the Mass GI, for configuration (in
  parallel) and for communication with other system devices

General Specifications

Features:

• Output voltage: (Same as input voltage plus or
  minus 5%) 90-255 V AC
• Output frequency range: Same as input
  frequency, 45-65 Hz
• Nom. input current at 230 V: 32 A
  continuous
• Input frequency range: 45-65 Hz
• Efficiency: < 93 %
• Nominal Power: 7000 VA at 230V
• Dimensions: 13 3/8’H x 10 5/16’W x 9
  13/16’D
• Weight: 22.0 pounds

Technical Specifications

Features:

• Technology: high frequency
• Earth leakage switch: no
• No-load power consumption: 44 W
• Temperature range: (ambient temp.) 0-40
  degreesC, derating with 5% per degreesC
  32 to 32 degreesF, Switch off at 80 degreesC
• Relative humidity max.: 95%
• Waterproof Rating: IP21 (not waterproof
• Cooling: variofan
• MasterBus compatible: yes
• Switch-off behavior: breaker
  B-characteristic
• Soft start: yes

What’s in the Box

Features:

• Mass GI 7
• MasterBus cable (in connection compartment)
• MasterBus terminator (in connection compartment)
• Manual

Specifications:

Name	Value
Amperage	140 Amps
Multi Bank Chargers	2 Banks
Type	Battery Isolator/Combiners
Voltage	12 Volts DC