Page 95 - Surge-Protection-E_0.pdf

Surge Arresters – Type 2 for PV Systems

DEHNcube
• Prewired multipole surge arrester with IP 65 degree of
protection for use in photovoltaic systems
• No space required in a distribution board enclosure
• Pre-assembled connecting cable available for simple
connection of the surge arrester directly upstream
of the inverter to be protected
• Combined disconnection and short-circuiting device
with safe electrical isolation in every protective path
(patented SCI principle)
• Spring-loaded terminals for easy and quick connection
without tools
• Tested to EN 50539-11
• For use in all PV systems according to IEC 60364-7-712
For protecting low-voltage consumer installations against surges. For use in accord-
ance with IEC 60364-7-712 (photovoltaic (PV) power systems).

DEHNcube YPV SCI 1000 1M: Two-pole surge arrester with IP 65 degree of protection and three-step d.c. switching device
for protecting one MPP input; for PV systems up to 1000 V
DEHNcube YPV SCI 1000 2M: Four-pole surge arrester with IP 65 degree of protection and three-step d.c. switching device
for protecting two MPP inputs; for PV systems up to 1000 V

The robust and flexible surge arresters of the DEHNcube YPV SCI 1000 ... tems. This ensures that the arrester is protected in case of overload. Even
family are specifically developed for protecting equipment in photovolta- in case of voltages up to 1000 V d.c., a switching arc, which is likely to
ic systems. The patented three-step d.c. switching device (SCI principle) occur when a conventional disconnector of a surge protective device is
makes these devices particularly safe so that they fulfil all requirements triggered, is extinguished immediately without risk. This is ensured by its
in modern photovoltaic systems. approved fault-resistant Y circuit which prevents damage to the surge
DEHNcube YPV SCI 1000 ... is the first surge arrester with IP 65 degree of protection in case of insulation faults in the generator circuit.
protection from DEHN that is tested to EN 50539-11. Thus, no space is To ensure safe electrical isolation in case of a faulty surge protective de-
required in a distribution board enclosure or a distribution board enclo- vice, a fuse which was particularly developed for PV systems was integrat-
sure does not have to be installed just for the surge protective device as ed into the short-circuit path. This unique design combines surge and
is the case with standard DIN rail mounted arresters. DEHNcube YPV SCI personal protection and allows DEHNcube YPV SCI 1000 ... to be used in
1000 ... may be installed right next to the inverter to be protected, i.e. it all low, medium and high-performance photovoltaic systems without ad-
is ideally suited for quickly and easily retrofitting a surge protective device ditional backup fuse.
in an existing PV system. DEHNcube YPV SCI 1000 ... is a special type 2 surge protective device,
The optional pre-assembled Y connecting cable ensures easy connection which may be quickly installed directly next to the equipment of the PV
of DEHNcube YPV SCI 1000 ... The connecting cable is designed in such a generator circuit it is supposed to protect without requiring an additional
way that the cable length can be individually shortened to the optimal insulating enclosure. The IP 65 degree of protection ensues that it is dust-
length, thus ensuring maximum protection due to lower transmission loss. proof and jet-water-tight. A pressure compensating element with an
To fulfil the special requirements in PV systems, the approved fault-resist- air-permeable and water-tight special grommet which avoids condensa-
ant Y circuit consisting of three protective paths of the varistor and a tion in the enclosure is imperative for safe outdoor use and is therefore
combined disconnection and short-circuiting device are integrated in a already integrated as a standard.
single device. The Y connecting cable, which is available as accessory, allows easy wiring
Surge Arresters – Type 2
This synergy further reduces the probability of an arrester failure in case of DEHNcube YPV SCI 1000 … The next pages show sample applications
of the operating and fault states which have to be considered in PV sys- of the connecting cable.

900 920 DCU YPV SCI 1000 2M 900 910 DCU YPV SCI 1000 1M
DEHNcube YPV SCI 1000 1M / 2M
900 920 4013364155053 04 01 02 10 617 g 900 910 4013364155046 04 01 02 10 426 g
346,00 € 196,10 €
Two-pole / four pole surge arrester with IP 65 degree of protection and three-step d.c. switching device for PV inverters for protecting one / two
MPP inputs.
Type DCU YPV SCI 1000 ... 1M 2M
Part No. 900 910 900 920
SPD according to EN 50539-11 type 2 type 2
Max. PV voltage (UCPV) 1000 V 1000 V
Short-circuit current rating (ISCPV) 1000 A 1000 A
Nominal discharge current (8/20 µs) [(DC+/DC-) --> PE ] (In) 12.5 kA 12.5 kA
Max. discharge current (8/20 µs) [(DC+/DC-) --> PE] (Imax) 25 kA 25 kA
Voltage protection level (UP) ≤ 4 kV ≤ 4 kV
Degree of protection IP 65 IP 65

Valid as of August 1, 2020 You will find detailed product information on our website 91