DEHNcombo

Combined Arrester for use in Photovoltaic Systems

Prewired type 1 and type 2 combined lightning current and surge arrester for use in photovoltaic generator circuits Combined disconnection and short-circuiting device with safe electrical isolation prevents fire damage caused by d.c. switching arcs (patented SCI principle) Approved fault-resistant Y circuit prevents damage to the surge protective devices in case of insulation faults in the generator circuit Space-saving enclosure with a width of only four modules for up to 1500 V d.c. Tested to EN 50539-11 Suitable for use in all PV systems in accordance with IEC 60364-7-712 Operating state / fault indication by green / red indicator flag in the inspection window

Types

DEHNcombo YPV SCI 600: Two-pole combined lightning current and surge arrester for use in photovoltaic power supply systems up to 600 V d.c.

DEHNcombo YPV SCI 1000: Two-pole combined lightning current and surge arrester for use in photovoltaic power supply systems up to 1000 V d.c.

DEHNcombo YPV SCI 1500: Two-pole combined lightning current and surge arrester for use in photovoltaic power supply systems up to 1500 V d.c.

DEHNcombo YPV SCI ... FM: With remote signalling contact for monitoring device (floating changeover contact)

Details

The DEHNcombo YPV SCI ... combined arrester protects equipment in photovoltaic systems against lightning currents.

Thanks to its application-optimised discharge capacity of 6.25 kA (10/350 µs) per pole, DEHNcombo meets the requirements of the latest version of the EN 50539-12 standard and Supplement 5 of the German DIN EN 62305-3 standard. With a short-circuit current rating of 1000 A, DEHNcombo easily meets all requirements placed on surge arresters in small, medium and large photovoltaic systems. DEHNcombo can be used in all photovoltaic systems up to 1000 A without additional backup fuse.

Due to its enclosure design specifically adapted to the system-specific requirements, even the version for photovoltaic systems up to 1500 V can be used without taking special precautions (e.g. safety distances). The combined lightning current arrester only takes up space of four modules, thus allowing space-saving installation.

The patented three-step d.c. switching device (SCI principle) provides an extremely high degree of safety which is required in modern photovoltaic systems. 600 V, 1000 V and 1500 V versions are available, thus covering the most common voltage levels of photovoltaic systems. The fault-resistant Y circuit and the combined disconnection and short-circuiting device further reduce the probability of an arrester failure in case of the operating and fault states which have to be considered in photovoltaic systems. This ensures reliable operation of the PV system at any time.

A low own consumption of the devices is also an important aspect in PV systems. The operating state / fault indication, which needs no power to operate and immediately provides information on the operating state of the arrester, also fulfils this requirement. With its optional floating changeover contact, the remote signal can be used as a break or make contact according to the particular circuit concept.

Specification

Type DCB YPV SCI 600 DCB YPV SCI 1000 DCB YPV SCI 1500
Part No. 900 060 900 061 900 062
SPD according to EN 50539-11 type 1 + type 2 type 1 + type 2 type 1 + type 2
Max. PV voltage [DC+ -> DC-] (UCPV)
≤ 600 V
≤ 1000 V ≤ 1500 V
Max. PV voltage [DC+/DC- -> PE] (UCPV) ≤ 450 V
≤ 725 V ≤ 1100 V
Short-circuit current rating (ISCPV) 1000 A
1000 A 1000 A
Nominal discharge current (8/20 µs) (In) 15 kA
15 kA 15 kA
Total discharge current (8/20 µs) [DC+/DC- -> PE] (Itotal) 30 kA
30 kA 30 kA
Total discharge current (10/350 µs) [DC+/DC- -> PE] (Itotal) 12.5 kA

12.5 kA 12.5 kA
Specific energy [DC+/DC- -> PE] (l) 39.06 kJ/ohms
39.06 kJ/ohms 39.06 kJ/ohms
Lightning impulse current (10/350 µs) [DC+ -> PE/DC- -> PE] (Iimp) 6.25 kA
6.25 kA 6.25 kA
Specific energy [DC+ -> PE/DC- -> PE] (W/R) 9.76 kJ/ohms
9.76 kJ/ohms 9.76 kJ/ohms
Voltage protection level [(DC+/DC-) -> PE] (UP) 1.75 kV
2.5 kV 3.75 kV
Voltage protection level [DC+ -> DC-] (UP) 3 kV
4.75 kV 7.25 kV
Response time (tA) ≤ 25 ns
≤ 25 ns ≤ 25 ns
Operating temperature range (TU) -40 °C ... +80 °C
-40 °C ... +80 °C -40 °C ... +80 °C
Operating state / fault indication green / red
green / red green / red
Number of ports 1
1 1
Cross-sectional area (min.) 1,5 mm2 solid / flexible 1.5 mm2 solid / flexible 1.5 mm2 solid / flexible
Cross-sectional area (max.)
35 mm2 stranded / 25 mm2 flexible
35 mm2 stranded / 25 mm2 flexible 35 mm2 stranded / 25 mm2 flexible
For mounting on 35 mm DIN rails acc. to EN 60715
35 mm DIN rails acc. to EN 60715 35 mm DIN rails acc. to EN 60715
Enclosure material thermoplastic, red, UL 94 V-0
thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0
Place of installation indoor installation
indoor installation indoor installation
Degree of protection IP 20
IP 20 IP 20
Dimensions 4 module(s), DIN 43880
4 module(s), DIN 43880 4 module(s), DIN 43880
Approvals KEMA
KEMA KEMA
Weight 374 g
433 g 524 g
GTIN 4013364153707
4.01E+12 4.01E+12
PU 1 pc(s) 1 pc(s) 1 pc(s)
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