Mastervolt MASS SINE 12/250 Mode D'emploi page 3

MAINTENANCE AND SPARE PARTS
This unit is maintenance-free.
Should malfunctions of the unit occur despite these
inspections, the unit must be returned to the manufacturer
for repair. Original spare parts are only available from Mas-
tervolt. Mastervolt will provide you with the authorization
necessary to return a unit for repair. Before you call please
prepare you for the following questions:
• type of unit;
• DC voltage;
• date of purchase;
• kind of fault;
• connected loads.
1 UNPACKING THE UNIT
Please check if the unit has no visible damage. If the
unit is damaged you must inform your dealer within 3
days after receiving the unit.
2 FUNCTION, TECHNOLOGY
This inverter is designed to convert DC battery voltage
(direct voltage) to 230V AC (sinusoidal alternating vol-
tage). Voltage controlled, the inverter provides a stabili-
zed, crystal-accurate alternating voltage (different vol-
tages and frequencies refer to the indication label).
With a sine wave inverter almost any type of electric
consumer may be connected as for example energy
saving lights, fluorescent tubes, computers, Radio-
and HIFI-equipement and other household appliances.
Due to a high degree built-in safety, excellent dynamic
response, a surge-proof and overlad-proof output, it is
very simple to operate a broad range of applications.
The "heart" of the inverter is a very powerful RISC-
microprocessor of the latest generation. This micropro-
cessor is responsible for the real time computing of the
output sine wave shape, for the process control of the
output voltage, for the supervision of the battery (dyna-
mic) and the inverter temperature.
The power stage features modern Power Mosfet tran-
sistors. These transistors are the key to the high partial
load efficiency and superb overload capability. The
power transistors are protected by independent intelli-
gent protection circuits.The inverter is further more pro-
tected against DC overvoltage (static) and short circuit
on AC output.
The superb toroidal transformer has very low magnetic
losses, high efficiency and a very low RFI-radiation le-
vel. The transformer design provides a high efficiency
over a wide operating range. No electrical connection
between DC input and AC output due to the transfor-
mer. It complies with the following guidelines:
• IEC 742
• VDE 0551 TI
EN / Sine wave inverter 12/250 & 24/250 / May 2000
• EN60742
• SEMLO 9742
3 GENERAL INFORMATIONS
Always check the power draw of your appliances. Elec-
trical equipement as motors, pumps, compressors etc.
need more power while starting up. Start up power
draw can be much higher than Pnom. For this applica-
tions the inverter is able to supply surge power for a
short time.
If ambient temperature is higher than 20°C, Pnom and
overload capability of the inverter will be reduced.
4 INSTALLATION
The selection of a safe location for installing the inver-
ter depends on the following criteria:
• Check indication label for correct DC voltage and
AC voltage.
• The inverter can be used in any position.
• Protection from unauthorized access in particular
of childrens.
• Dry, dust free surroundings (max. 95% humidity,
not condensing).
• You must not remove the connector on the DC wire
or change the wire.
• Adequate ventilation. Keep min. 10 cm distance to
other objects (except mounting side).
• Battery capacity must be at least 50 Ah. No other
DC-units are allowed at the same battery.
5 CONNECTING THE INVERTER
Inbuilt, large capacitors will hold DC voltage for
extended periods. They still can have DC volta-
ge even when you disconnected the DC cables
from the battery!
First make AC connections. Use the enclosed connector.
An additional AC circuit breaker (size refer to datasheet)
has to be installed. We recommend to install a earth lea-
kage protector for protection of personnel. Please observe
domestic regulations when making connections!
The DC-Cables must not be changed!
Be sure polarity is correct:
• RED = battery positive
• BLACK = battery negative
Applying of wrong polarity can damage the inverter.
Some cars have positive battery on the cabin. If
you have such a car check for correct polarity of
the DC connector.
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INSTALLATION TECHNOLOGY
3