Samlex Europe PST-300S-12E Manual Del Propietário página 36

seCtIOn 8 | seCtIOn 8 |
SECTION 8 |
8.5 Ac SiDe connectionS
against short circuit. Amp rating of the fuse is based on the following considerations:
a) Not less than the Maximum Continuous DC Input Current (Column 2)
b) C losest Standard Ampere Rating of fuse has been used - Refer to NEC-2014
WARninG! Preventing Paralleling of the Ac output
- Test Button: This button is used to test if the Gf CI is operating normally. Test the Gf CI
(National Electrical Code) - Section 240.6(A)
periodically to ensure that it is operating normally.
1. The AC output of the inverter cannot be synchronized with another AC
c) W here Standard fuse Rating does not match the required Ampacity (Col-
source and hence, it is not suitable for paralleling. The AC output of the
umn 2), the next higher Standard Rating of the fuse has been used - Refer to
inverter should never be connected directly to an electrical Panelboard / Load
The Gf CI will trip due to the following conditions:
NEC-2014 (National Electrical Code) - Section 240.4(B)
Center which is also fed from the utility power/ generator. Such a connection
- Leakage or Ground
will result in parallel operation and AC power from the utility / generator will
- Neutral to Ground bonding (connection) on the load side of the Gf CI
d) type of fuse: fast-acting, Current Limiting, UL Class T (UL Standard 248-15)
be fed back into the inverter which will instantly damage the output section
or equivalent
of the inverter and may also pose a fire and safety hazard. If an electrical
!
CAUTION!
Panelboard / Load Center is being fed from the utility power / generator and
5) S amlex America, Inc. makes 4 Models of generic / universal Inverter Installation Kits to cov-
the inverter is required to feed this panel as backup power source, the AC
er installation requirements of a wide power range from 600W to 3500W for 12V invert-
1. Each of the NEMA5-20R outlets is rated for 16A continuous and 20A intermit-
power from the utility power/ generator and the inverter should first be fed
ers and from 1200W to 7000W for 24V inverters. Please note that the Inverter Installation
tent. Do not draw more than this rating from each outlet.
to a manual selector switch / Automatic Transfer Switch and the output of
Kit that has been recommended in Column (8) may include thicker wire size / correspond-
full rated output capacity of 25A of the inverter, use AC output connections
the manual selector switch / Automatic Transfer Switch should be connected
ingly bigger fuse size than those recommended in Table 8.2. This is acceptable.
for hardwiring (13,
to the electrical Panelboard / Load Center.
2. Do not feed the output from the Gf CI receptacle to a Panelboard / Load
fuse in the battery circuit is primarily required for protection against short circuit in
2. To prevent possibility of paralleling and severe damage to the inverter, never
Center where the Neutral is bonded to the Earth Ground. This will trip the
the battery cable run. The size of this fuse has to be equal to or larger than the maxi-
use a simple jumper cable with a male plug on both ends to connect the AC
Gf CI. If the AC output is required to be fed to a Panelboard / Load Center,
mum DC input current of the inverter at Column (2). further, the Amp rating of the
output of the inverter to a handy wall receptacle in the home / RV. use hardwiring connections (please see details given at Section 8.5.2 below).
fuse used for protecting a battery cable against short circuit has to be lower than the
Ampacity of the cable so that the fuse blows before the cable insulation is damaged
8.5.1 Ac output connection through Ground Fault circuit
8.5.1 AC Output Connections for Hardwiring
due to overheating as a result of fault current higher than the Ampacity of the cable.
interrupter (GFci)
The Amp ratings of fuses provided with the Inverter Installation Kits are lower than
For connecting the AC output of the inverter to an AC Panelboard / Load Center, sepa-
An un-intentional electric path between a source of current and a grounded surface the wire size provided with the Kit.
rate connections are available for hard wiring. Please refer to Fig 6.1. Compartment (11,
is referred to as a "Ground fault". Ground faults occur when current is leaking some-
Fig 6.1b) contains terminals for AC output. The compartment is covered by Cover Plate
The Kits come with 10ft length of cables to cover battery to inverter distance of up to
where. In effect, electricity is escaping to the ground. How it leaks is very important. If
(8, Fig 6.1a) with the help of 4 screws. The AC wiring enters through the metal Strain
10 ft. If the actual cable routing distance from the battery to the inverter is less than
your body provides a path to the ground for this leakage (dry human body has a low
Relief Clamp (7, Fig 6.1a). After the connections have been made, tighten the clamp.
10ft, please cut-off the extra length of cables. This will result in reduction in the over-
resistance of only around 1 K ohm), you could be injured, burned, severely shocked
AC output connections are as follows:
all resistance of the cable / reduction in voltage drop and consequently, will improve
or electrocuted. A Ground fault Circuit Interrupter (GfCI) protects people from electric
the efficiency of the inverter system
shock by detecting leakage and cutting off the AC source.
Terminal Block (13, Fig 6.1b) with Line "L" and Neutral "N" Terminals.
Please note that Line terminal "L" of the AC Terminal Block (13, Fig 6.1b) is internally
8.4.6 Dc input connection
The AC output of this inverter is available through a NEMA5-20R GfCI Duplex Recepta-
connected together at the PCB. Similarly, Neutral terminal "N" on the AC
The DC input terminals for battery connection (14 & 16 in fig. 6.1c) have nut and bolt con-
cle (6, fig 6.1a) and also through hardwiring terminal connections located in a com-
Block (13, Fig 6.1b) internally connected togeter at the PCB
nection - bolt size is 5/16" (18 Threads per Inch). Use ring tongue type of terminals on the
partment (13, fig 6.1a) behind the GfCI receptacle. The Neutral slot of this receptacle
wire ends to fit 5/16" bolt size.
• Hole diameter: 4.15 mm / 0.16" (longer rectangular slot) and the Neutral Terminal "N" of the Terminal Block for AC out-
• Set screw: #6 (UNf, 40 Threads per Inch) or M3.5 ( Coarse Pitch 0.6 mm)
put hardwiring (13, fig 6.1b) are internally bonded to the metal chassis of the inverter.
8.4.7 Reducing RF interference
AC Ground Terminal (12, Fig 6.1b)
There is a Green indicator light on the GfCI outlet that will be lighted when the GfCI is
Please comply with recommendations given in Section 3 - "Limiting Electromagnetic
• Stud: #6 (UNC, 32 Threads Per Inch)
operating normally. The light will switch off if the GfCI is tripped.
Interference".
Neutral to Chassis Ground Bonding
The GfCI is provided with the following buttons:
• Neutral "N" is bonded to the metal chassis of the inverter through a loop of wire con-
- Reset Button: In case the GfCI is tripped, it can be reset by pressing the "Reset Button".
necting the "N" terminal on the Line side.
note: for the reset button to operate, the inverter has to be in oN condition and
should be outputting AC power (no fault / shutdown condition).
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Installation Installation
Installation
ault f
ig 6.1b) as described at Section 8.5.2 below. f
or drawing the f
Terminal
SAMLEX AMERICA INC. | 37