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2010
CA08103002Z-EN
www.eaton.com7/84
DC string circuit-breakers, DC switch-disconnectors
Description
a
b
d e f
c
Photovoltaics description
Photovoltaic systems convert sunlight
directly into electrical energy using
solar cells. Photovoltaics represent a
renewable source of energy that can
be used on private and public
buildings, as well as in large-scale
power stations.
These systems can be independent
from the power grid or can be
connected to it. Photovoltaic systems
that are connected to the grid feed the
generated power directly into the
mains network. This eliminates the
need for temporary storage. These
systems consist of solar cells, one or
more inverters, and a protective
device for automatic cutoff in the
event of a grid fault. Because of this,
photovoltaic systems that are
connected to the grid require
extremely reliable and safe individual
components.
①
DC string circuit-breaker
PKZ-SOL
②
DC switch-disconnector
P-SOL
③
Ready-to-install DC switch-
disconnector SOL
④
Inverter module
⑤
AC main switch
⑥
Network
Features
DC string circuit-breakers
•
Protect PV modules from fault
currents, prevent (in larger systems,
for instance) intact modules from
feeding power back into a module
with a short-circuit.
•
Are ready for operation immediately
after tripping and after the trip
cause has been fixed.
•
Open and for installation in
customized generator terminal boxes.
•
Tripping currents are adjustable
within a wide range of limits.
•
Optional shunt releases A-PKZ0 and
undervoltage releases U-PKZ0
enable remote shutdown, e.g for the
fire department. Optional auxiliary
contact NHI-E-PKZ0 signals
switching state.
•
When installed in an enclosure,
suitable for voltages of up to 900 VDC.
DC switch-disconnectors
•
Required, according to standard
VDE 0100-712 (June 2006), between
the PV module and inverter.
•
Enclosed and open (for installation
in enclosure) switch-disconnectors
for voltages of up to 1,000 VDC.
•
Usable as a separate switching
point as required in VDI Guideline
VDI 6012, e.g. by de-energizing an
inverter in a completely safe
manner.
•
Two-pole switching, making it
suitable for non-earthed systems as
well.
•
TÜV-certified.
•
Open switch-disconnectors P-SOL
are designed for installation in
customer-specific enclosures or
inverters.
•
Mounting on 35 mm top-hat rails,
their terminals enable a connection
to all popular cable types.
•
Separate rotary handles and shaft
extensions allow for flexible
installation.
•
An auxiliary switching block can be
mounted in order to provide
switching state feedback.
•
A shunt release or undervoltage
release is available for remote
tripping.
•
Switch-disconnectors SOL with
enclosure are ready for installation.
Models for 2 and 4 or 4 and 8 strings
and for the most popular connector
types, such as MC3, MC4, and
metric screw connectors, allow for
easy integration into various system
concepts.
•
Enclosure provides degree of
protection IP65, making outdoor
mounting possible.
•
Lockable mechanism provides safety
when maintenance is required.
•
Pressure-equalizing element
prevents the formation of condensed
water, preventing failures caused by
voltage sparkovers.
P-SOL, PKZ-SOL, SOL