Catalogues - lightning-and-surge-protection-systems

Catalogue Lightning and surge protection systems

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Application example

Building without external lightning protection system

Surge protection for the current industrial inverter - the heart of the system - is particularly important on buildings without external lightning protection. A protection system should cover all at-risk lines that are connected to the current inverter. The table will help to select the correct protection device. The DC surge arrester must be matched to the maximum no-load voltage of the solar module. Please note: the maximum no-load voltage is typically 10-20% above the indicated no-load voltage(Uoc).

Solar module

Converter DC

Main distributor



	e	■



	L	-►

l r

Power supply system

I AC protection

1 I

DC protection

Required only if the distance to the main distributor box with protection device is greater than 10 m line length

PAS


		Max. no-load voltage PV module	Version	Type	Art. no.	Page
		-	PV bottom part	V 20-C/U-PH	5096 62 6	55
		-	PV bottom part with remote signalling	V 20-C/U-PH-FS	5096 63 4	55
		110V	Surge protection upper part	V20-C/O-75	5099 57 9	56
		200 V	Surge protection upper part	V20-C/O-150	5096 70 7	56
A	PV DC protection	350 V	Surge protection upper part	V20-C/O-280	5099 60 9	56
A	PV DC protection	420 V	Surge protection upper part	V20-C/O-335	5099 85 0	56
		505 V	Surge protection upper part	V20-C/O-385	5099 59 5	56
		585 V	Surge protection upper part	V20-C/O-440	5099 70 6	56
		745 V	Surge protection upper part	V20-C/O-550	5099 61 7	56
		745 V	System solution, housing with MC plug	VG-C-DC-PH-550	5088 69 0	57
B	AC protection	-	1 + 1 complete version (single-phase)	V20-C/1+NPE-280	5095 61 1	43
B		-	3+1 complete version (triple-phase)	V20-C/3+NPE-280	5095 64 6	43
C	Accessories	-	Equipotential bonding rail	1801 VDE	5015 65 0	126

TBS 21