Dc Wiring; Ac Safety Grounding - Mastervolt MASS COMBI 12/1600-60 User Manual

INSTALLATION
5.3.2

DC wiring

Keep in mind that high current will pass through the DC
wiring. Keep the cable length as short as possible, this will
keep the system efficiency as high as possible. The
recommended minimum cross section for battery cables
up to 3m / 10ft length is:
Model Mass Combi
12/1600-60 / 230V
12/2200-100 / 230V
24/1800-35 / 230V
24/2600-60 / 230V
Use cable lugs terminals on the ends of the wires. These
lugs should be crimped with a proper crimping tool. Use
the following wire colours for DC wiring (refer to local
standards):
Wire color Meaning
Red Positive
Black Negative
Lay the positive and negative cables next to each other to
limit the electromagnetic field around the cables. The
negative cable should be connected directly to the
negative post of the battery bank or the ground side of a
current shunt. Do not use the chassis frame or hull of the
ship as the negative conductor. Tighten connections
securely (15 - 20 Nm / 130 - 175 In-Lbs.). The positive
battery cable must be fused according to local applicable
standards and connected to the positive post of the battery
bank.
See section 9.1 Specifications for recommended fuses.
The fuse with the fuse-holder is available from your local
Mastervolt distributor or Customer Service Representative.
18
DC Cable cross section:
50mm² / AWG0
70mm² / AWG2/0
35mm² / AWG2
50mm² / AWG0
Must be connected to:
+ (POS)
– (NEG)
January 2015 / Mass Combi 12/1600-60; 12/2200-100; 24/1800-35; 24/2600-60 / EN
5.3.3

AC safety grounding

WARNING
The ground wire offers protection only if the
cabinet of the Mass Combi is connected to the
safety ground. Connect the earth terminal (PE
/ GND) to the hull or the chassis.
CAUTION!
For safe installation it is necessary to:

connect the neutral conductor (N) of the AC
output to the earth (PE / GND), only during
inverter operation of the Mass Combi;

insert a Residual Current Device (earth leakage
switch) of 30mA in AC output "SHORT BREAK"
of the Mass Combi.

Insert a Residual Current Device (earth leakage
switch) of 30mA in AC input of the Mass Combi.
Refer to local standards on these issues!
For safety purposes the neutral conductor (N) of the AC
output must be connected to the earth (PE / GND) when
the Mass Combi is in inverter operation. When utility
power is available on the AC input, and the Mass Combi is
in charger mode, this connection must be disabled again.
In some applications automatic connection between the
neutral conductor (N) and earth (PE / GND) is not required
or acceptable. Therefore the automatic connection
between the neutral conductor (N) and earth (PE / GND) is
disabled by default
To enable this automatic connection, see section 6.1.5