Samlexpower PST-60S-48E, Руководство пользователя

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the fuse used in the battery circuit should limit the current (should be "Current Limiting
Type"), blow in a very short time (should be Fast Blow Type) and at the same time, quench
the arc in a safe manner. For this purpose, UL Class T Fuse or equivalent should be used
(As per UL Standard 248-15). This special purpose current limiting, very fast acting fuse will
blow in less than 8 ms under short circuit conditions. Appropriate capacity of the above
Class T fuse or equivalent should be installed within 7” of the battery Plus (+) Terminal
(Please see Table 8.2 for fuse sizing). Marine Rated Battery Fuses, MRBF-xxx Series made by
Cooper Bussmann may also be used. These fuses comply with ISO 8820-6 for road vehicles.
WARNING!
Use of an appropriately sized external fuse as described above is mandatory to
provide safety against fire hazard due to accidental short circuit in the battery
cables. Please note that the internal DC side fuses are designed to protect the
internal components of the inverter against DC side overloading. These fuses
will NOT blow if there is a short circuit along the length of wires connecting the
battery and the inverter.
8.4.5 Recommended Sizes of Battery Cables and Fuses
Sizes of cables and fuses are shown in Table 8.2. Sizing is based on safety considerations speci-
fied in NEC-2014. Please refer to “Notes for Table 8.2” for details.
Table 8.2 Recommended Sizing of Battery Cables and External Battery Side Fuse
Model No.
(1)
Rated
DC Input
Current
(See
Note 1)
(2)
Minimum
Ampacity of
cable as per
NEC
(See
Note 2)
(3)
External
Battery
Fuse Size
(Based on
Column 2)
(See
Note 3)
(4)
Minimum cable size
(See Note 4)
3 ft / 0.91M
(5)
6 ft / 1.83M
(6)
10 ft /
3.05M
(7)
PST-60S-48E 20A 25A 20A AWG#10 AWG#10 AWG#10
NOTES FOR TABLE 8.2
1) Column 2 indicates the Rated DC Input Current drawn from the battery.
2) Column 3 indicates minimum NEC Ampacity for sizing of conductors. NEC Ampacity
is not less than 125% of the rated DC input current (Column 2) - Refer to NEC-2014
(National Electrical Code) - Section 215.2(A)(1)(a) for Feeder Circuits.
3) Column (4) indicates the size of external fuse in the battery circuit. It is mandatory to
install this fuse within 7” of the battery Positive terminal to protect the battery cables
against short circuit. Amp rating of the fuse is based on the following considerations:
a) Not less than the Rated DC Input Current (Column 2)
b) Closest Standard Ampere Rating of Fuse has been used - Refer to NEC-2014
(National Electrical Code) - Section 240.6(A)
SECTION 8 | Installation