26 Hardware description
F304 DC
grounding
with
grounding
bypass
resistor (only
with F282
and F283)
The DC potential (positive or negative) grounding is equipped with parallel
bypass resistor. This resistor provides back-up higher impedance grounding if
the normal functional grounding would break down.
8H382 For 8 fuse
protected DC
inputs
Inverter is equipped with 8 fuse protected DC inputs (4 per power section).
Standard fuse size is 400 A.
12H382 For 9 to 12
fuse
protected DC
inputs
Inverter is equipped with 12 fuse protected DC inputs (6 per power section).
Standard fuse size is 400 A.
16H382 For 13 to16
fuse
protected DC
inputs
Inverter is equipped with 16 fuse protected DC inputs (8 per power section).
Standard fuse size is 400 A.
20H382 For 17 to 20
fuse
protected DC
inputs
Inverter is equipped with 20 fuse protected DC inputs (10 per power section).
Standard fuse size is 250 A.
24H382 For 21 to 24
fuse
protected DC
inputs
Inverter is equipped with 24 fuse protected DC inputs (12 per power section).
Standard fuse size is 200 A.
F300 DC Surge
arrester, high
energy, Type
1, complies
also with
Type 2
Standard Type 2 surge arresters replaced with high-energy Type 1 surge
arresters that fulfill also Type 2 requirements. Provides better protection for
surges.
F305 DC
disconnector
Inverter is equipped with a manual DC disconnectors (one per power section).
The disconnectors are meant for isolation purposes.
0F291 No DC fuses.
Inverter
delivered
without DC
fuses (with
empty slots).
Inverter has no DC fuses installed. Instead, they need to be installed when
performing the installation at site.
G420 Input fuse
blown
indicator (one
common
signal per
power
section)
The DC fuses have micro switches that indicate a blown fuse. The micro
switches of each power section are connected in series, meaning that only
one warning per power section is signaled to the user. To find out which fuse
has actually blow inside the power section, one needs to visually inspect the
inverter.
G417 DC input
current
measurement
from each DC
input
All DC inputs have dedicated current sensors to measure the input current.
Can be used for additional protection and monitoring. Sometimes referred to
as “zone monitoring”.
Code Name Description
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