Samlexpower Evolution EVO-2212, Руководство пользователя

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3.10 GFCI PROTECTION FOR VEHICLE APPLICATION
When this unit is installed in vehicles, ensure that Ground Fault Circuit Interrupter(s) are installed
in the vehicle wiring system to protect all branch circuits. Details of tested and approved GFCI’s are
given in Table 3.4.
3.11 GROUNDING TO EARTH OR TO OTHER DESIGNATED GROUND
For safety against electrical shock, the metal chassis of unit is required to be grounded to
the Earth Ground or to the other designated ground. For example, in a mobile RV, the metal
frame of the RV is normally designated as the Negative DC ground / RV Ground. Similarly, Boat
Ground is provided in the boats.
An Equipment Grounding Connector (5 in Fig. 3.8) has been provided on the metal chas-
sis for connecting to the appropriate ground through the Equipment Grounding Conductor
(EGC). This Equipment Grounding Conductor (EGC), when appropriately bonded to Earth
Ground, helps to prevent electric shock and allows over-current devices to operate properly
when ground faults occur. The size of this conductor should be coordinated with the size of the
over-current devices involved. Marine installations require the size of this conductor to be of the
same size as the Battery Negative wire.
Please read following on-line White Papers for complete understanding of Grounding
at www.samlexamerica.com (Home > Support > White Papers):
• “Grounded Electrical AC Power Distribution System”
• “Grounding System and Lightning / Ground Fault Protection”
3.12 GROUNDING ARRANGEMENT IN EVO SERIES
Schematic at Fig. 3.12 illustrates the grounding arrangement of EVO Series.
Internally, EVO consists of a DC Section and an AC Section that are isolated through a trans-
former. Both these sections are required to be grounded appropriately.
3.13 DC SIDE GROUNDING (SEE FIG. 3.12)
DC side grounding involves proper grounding of the Negative of the battery, the DC Panel and
the DC side of the EVO.
A Grounding Connector (G2) (5 in the DC side layout in Fig. 2.1) is provided for connecting to
the System Ground. The connector can accept wire sizes AWG # 4–6. The set screw size is M8.
A DC Panel, as shown in Fig. 3.12, is normally provided to connect the batteries and distribute
DC power to the inverter and to the other DC loads.
The Negative of the battery is connected to the Neg (-) Bus, which is connected to the Bus bar
for Equipment Grounding Conductors (G3), which in turn is bonded to the Grounding Electrode
(GE), also called Ground Rod. Hence, the Battery Negative and the chassis of the DC Panel and
the chassis of the EVO will all be bonded to the Earth Ground.
Connect the combined DC and AC Grounding Terminal (G2) (5 in the DC side layout in Fig. 3.8),
to the Equipment Grounding Bus Bar (G3) in the DC Panel using AWG #6 insulated stranded
copper wire. For application of EVO on a boat, the size of this wire should be of the same size as
the battery Negative wire.
SECTION 3 | Installation