en solar-log™ overvoltage protection for small and large ...€¦ · enerpro 220tr&20ka typ...

1

Solar-Log™ Overvoltage Protection for Small

and Large Plants

EN

2

Publisher:

Solare Datensysteme GmbH

Fuhrmannstr. 9

72351 Geislingen-Binsdorf

Germany

International support

Tel.:+49 7428 9418 -640

Fax:+49 7428 9418 -280

e-mail: [email protected]

Italy

Technical support: +39 0471 631032


France



Switzerland



United States

Technical support: +1 203 702 7189


3

Table of Contents

1 Overvoltage Protection for Small Plants ��41�1 General information on overvoltage and overvoltage protection�� 4

2 Overvoltage Protection for Large Plants �� 52�1 Lightning and Overvoltage Protection Concept �� 52�2 Examples for lightning and overvoltage protection concepts �� 6

4

Overvoltage Protection for Small Plants

1 Overvoltage Protection for Small Plants

1�1 General information on overvoltage and overvoltage protection

Whenever electronic components are used, a combination of adverse factors can lead to

overvoltage.

This also applies to photovoltaics and the large number of related private solar plants.

These factors go beyond just lightning strikes and also include electro-magnetic induction that, for exam-

ple, can lead to overvoltage spikes with unprotected cables. Overvoltage can cause irreparable damage to

the Solar-Log™ interfaces. Overvoltage protection is needed for the Solar-Log™ to counter these influences

and to minimize discharge damage.

Overvoltage protection can be installed at the RS485-A and RS485/422-B interface of the Solar-Log™ and

is a cost-effective protection from overvoltage damage. The installation of the overvoltage module is rela-

tive easy; it only has to be attached to the appropriate interface and then has to be grounded.

That is why it is recommended to install appropriate overvoltage protection on the inverter for smaller

plants to prevent damage to the interface (as described above) as well as to prevent any resulting data

loss.

Fig.: Example of overvoltage protection with a Solar-Log1000

5

Overvoltage Protection for Large Plants

2 Overvoltage Protection for Large Plants

2�1 Lightning and Overvoltage Protection Concept

For larger plants with many inverters, it is strongly advised to take the factors mentioned into account and

to install a lightning and overvoltage protection concept to protect the Solar-Log™ from overvoltage�

Due to the complexity of this overall concept, it is recommended to work with a specialist or the manufac-

turer to develop such a concept�

Here are two examples of an overall concept based on the recommendations from the companies Leutron

GmbH and Dehn & Söhne GmbH & Co� KG�

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2�2 Examples for lightning and overvoltage protection concepts

Sola

r-Log

™

Rem

ote

Cont

rol

Grid

Oper

ator

Elec

trica

lcab

inet

F2

Grid

230V

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rnet

PM In

terfa

ce

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Rout

er /

Mob

ile R

oute

r

Data

Pro

RJ45

-CA

T6-4

8V-T

RAr

t.Nr.

2400

05

Grid

230V

Inv

1

Inv

2

Inv

31

RS-4

85 /

RS-4

22En

erPr

o 22

0Tr&

20kA

Ty

p 2-

3 pr

otec

tor

Art.N

r. 38

2022

Data

Pro

für D

ata

lines

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rter

Requ

iresT

ype

1 pr

otec

tion

forb

uild

ing

orsu

bsta

tion

2-W

ire D

ata

+/-:

Data

Pro

2x1,

Art

.Nr.

28 2

4 24

3-W

ire D

ata

+/-,G

ND: D

ataP

ro3x

1, A

rt.N

r. 28

24

244-

Wire

(onl

y for

RS42

2): D

ataP

roRS

485,

Art

.Nr.

27 0

4 85

Only

reco

mm

ende

dw

hen

cabl

ele

ngth

>5m

Reco

mm

enda

tion

by Le

utro

n Gm

bHW

e re

com

men

d to

conf

irm th

e co

ncep

t with

the

man

ufac

ture

or a

lo

cal c

ompa

ny w

hich

is q

ualif

ied

in li

ghtn

ing p

rote

ctio

n

Conn

ectio

n fro

mco

mm

unica

tion

netw

ork

toDS

L Rou

ter c

anbe

prot

ecte

dby

Data

Pro

2x1-

24V-

SDSL

-Tr

Fig.: Lightning and overvoltage protection concept from the company Leutron GmbH

7


Sola

r-Log

™

Rem

ote

Cont

rol

Grid

Ope

rato

r

Elec

trica

lcab

inet

F2

Grid

230V

Ethe

rnet

PM In

terfa

ce

DSL-

Rout

er

Dehn

Pat

ch

Ethe

rnet

pr

otec

tion

Art.N

r. 92

9100

Grid

230

V

Inv

1

Inv

2

Inv

31

RS-4

85 /

RS-4

22De

hn R

ail D

R M

2P

255

Art.N

r. 95

3 20

0BL

ITZD

UCTO

Rfo

rdat

alin

es

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rter

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iresT

ype

1-2

prot

ectio

nfo

rbui

ldin

gor

subs

tatio

n, o

ther

wise

use

Dehn

Shi

eld

Type

1-3

2-w

ire D

ata

+/-,G

ND: P

SM-E

G-RS

485

, Art

.Nr.

920

271

4-w

ire (o

nly

forR

S422

): PS

M-E

G-RS

422

, Art

.Nr.

920

371

Forb

oth

the

mou

ntin

gpa

rt92

0300

isre

quire

d

Only

reco

mm

ende

dw

hen

cabl

ele

ngth

>5m

Reco

men

datio

nby

Dehn

+ S

öhne

Gm

bH +

Co.

KG

We

reco

mm

end

toco

nfirm

the

conc

eptw

ithth

em

anuf

actu

reor

a lo

cal

com

pany

whi

chis

qual

ified

in li

ghtn

ing

prot

ectio

n

Conn

ectio

n fro

mco

mm

unica

tion

netw

ork

toDS

L Rou

ter c

anbe

prot

ecte

dby

Dehn

nBox

DBX

TC 1

80

Fig.: Lightning and overvoltage protection concept from the company Dehn & Söhne GmbH & Co. KG

The copyright of these instructions remains with the

manufacturer. No part of these instructions may be

reproduced in any form or processed, duplicated

or distributed using electronic systems without the

written consent of Solare Datensysteme GmbH.

Subject to change without notice.

Solare Datensysteme GmbH cannot guarantee the

accuracy or completeness of the information pro-

vided and expressly refuses to accept liability for

any errors or omissions in such information.

Non-compliance resulting in contradiction of the

above-mentioned specifications shall result in obli-

gation to provide compensation for damages.

All brands and trademarks contained in this manual

are the sole property of the respective manufac-

turer, which we respect and recognize herewith.

"Speedwire" is registered trademark of SMA Solar

Technology AG in many countries.

Solare Datensysteme GmbH

Fuhrmannstraße 9

72351 Geislingen-Binsdorf

Germany

Tel: +49 7428 9418 200

Fax: +49 7428 9418 280

[email protected]

www.solar-log.com

www.solarlog-WEB.com

Hotline: +49 7428 9418 660E

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EN

en solar-log™ overvoltage protection for small and large ...€¦ · enerpro 220tr&20ka typ...

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