surge protection for photovoltaic systems -...

Surge Protection for Photovoltaic Systems

photovoltaic generatordisconnection boxes

22

333Surge Protection for PV

Introduction 4

Protection of PV systems 5

Surge Protection Range for PV system 6

Surge Protection Panels for PV installations 10

Surge Protection Panels for PV Plants 16

Index

BR09092- Document could be modified without notice


4

The company

CITEL, a French company founded in 1937, has been manufacturing surge

protection since 1945.

CITEL off ers a complete range of surge protection adapted to various

networks including Low Voltage, Telecom, Data, Radiocom.

Since 2005, CITEL has developed a range of surge protection and integrated

enclosure solutions specifi cally for the photovoltaic market.

CITEL's mission is to bring high-performance solutions compliant with the

worlds leading standards in order to insure the best effi ciency and reliability

of your photovoltaic system.


Protection of PV devices against transient overvoltages

Surge Protectors for PV devicesThe photovoltaic installation can be exposed to

overvoltages on different networks :

- AC network : surge protectors are necessary,

sometimes mandatory, for the 230V monophase

network (or 3-phases 230/400V) on which the PV

inverter is connected.

- DC network : surge protectors are necessary,

sometimes mandatory, on the continuous network

in between the modules and the PV inverter.

- Data Network : if the PV inverter is linked to

data lines (transducers, sensors, supervision) surge

protectors are sometimes required.

Most of the solar module manufacturers offer a warranty

of 20 years or more on their products. The cost of such

devices is then calculated on this very long period.

However those installations are very regularly exposed

to lightnings and overvoltages, which can considerably

reduce the desired life expectancy. The use of adapted

surge protections is then highly recommended.

Several aspects have to be considered to evaluate the risk

"Lightning and Overvoltages" :

The more the solar panel field is expanded, the more

the risk of "lightning" issue is important.

The risk is multiple : direct effect (lightning impact

directly on the modules) and indirect effect (overvoltages

on modules, on the converter/inverter and other

connecions).

When the Photovoltaic devices are located on industrial

sites, the risk of operation overvoltages should be taken in

account as well.

The risks level is directly linked to the density of local

lightning and the exposure of the lines.


6

Surge Protectors for PV installations - AC side

Surge Protectors for Data Lines

Surge protectors Type 1 and Type 2 AC

Surge protection with pluggable module for Data line

DS250VG - DS40 - DS240

DLA

Reference DS250VG DS40 DS240 DS215Type of surge protector Type 1 Type 2 Type 2 Type 2

Location TGBT TGBT TGBT or close to a PV inverterclose to a PV

inverterLow voltage network Un 230/400 Vac 230/400 Vac 230 Vac 230 VacMax. operating voltage Uc 255 Vac 255 Vac 255 Vac 255 VacNominal discharge current In 30 kA 20 kA 20 kA 5 kAMax. discharge current Imax 70 kA 40 kA 40 kA 15 kALightning current (10/350) Iimp 25 kA - - -Protection level Up 1,5 kV 1,25 kV 1,25 kV 0.9 kVReference for 1-phase network (TT, TN) DS252VG-300/G DS42-230/G DS240-230/G DS215-230/G

Reference for 3-phase network (TT, TN) DS254VG-300/G DS44-230/G - -

Dimensions (1-phase) 72 mm 36 mm 18 mm 18 mm

References DLA-48D3 DLA-24D3 DLA-06D3Type of line PT100 4-20 mA RS485Operating DC voltage Un 48 Vdc 24 Vdc 6 VdcNominal discharge current In 5 kA 5 kA 5 kAMax. discharge current Imax 20 kA 20 kA 20 kA

The connection of the PV to low voltages should be protected according to the Guide UTE C15-712 recommandation. Depending on the kind of network, the presence of lightning rod or on primary existing surge protectors, CITEL proposes several solutions.

The PV installation can be interconnected to diff erent data networks (transducers, sensors, supervision..). In that case the use of adapted surge protectors on those networks is recommended.

DS254VG-230/G

DS44S-230/G

DS240S-230/G

DLA-24D3


Surge Protectors for PV installations - DC side

DS50PVSurge protection Type 2 with unpluggable modules for PV network

Surge protection Type 1 for PV power supplyDS60PV

References DS50PV-500 DS50PV-600 DS50PV-800 DS50PV-1000Max. PV voltage Uocstc 500 Vdc 600 Vdc 800 Vdc 1000 VdcMax. operating voltage Ucpv 530 Vdc 680 Vdc 840 Vdc 1060 VdcProtection Modes MC MC MC/MD MC/MCNominal discharge current 8/20s In 20 kA 20 kA 20 kA 20 kAMax. discharge current 8/20s Imax 40 kA 40 kA 40 kA 40 kAProtection level Up 1,8 kV 2,5 kV 3 kV 3,6 kVRemote controlled version DS50PVS-500 DS50PVS-600 DS50PVS-800 DS50PVS-1000

The DC input of the inverters should be protected according to the recommandations of the UTE C15-712 Guide. Citel has developped a whole range of products devoted to this application : DS50PV. This one proposes several solutions :

DS50PV : standard solution using specifi c varistors, available in common or diff erential mode. DS50PV-.../G : version including a branch with gas tube linked to the ground, allowing the total suppression of leakage current. Protection in common and diff erential mode.

When the installation is equipped with lightning rods, it is recommanded to use surge protectors specifi cally designed to dissipate a part of the direct impact of the lightning. For those cases, CITEL has developped the DS60PV series Type 1 surge protectors being able to take up 12.5 kA a pole for a 10/350s wave.

DS50PV-.../GSurge protection Type 2 with unpluggable modules for PV network - without leakage currentReferences DS50PV-500/G DS50PV-800/G DS50PV-1000/GMax. PV voltage Uocstc 500 Vdc 800 Vdc 1000 VdcMax. operating voltage Ucpv 530 Vdc 840 Vdc 1060 VdcProtection Modes MC/MD MC/MD MC/MCNominal discharge current 8/20s In 20 kA 20 kA 20 kAMax. discharge current 8/20s Imax 40 kA 40 kA 40 kAProtection level Up 1,8 kV 3 kV 3,6 kVRemote controlled version DS50PVS-500/G DS50PVS-800/G DS50PVS-1000/G

References DS60PV-500 DS60PV-1000Max. PV voltage Uocstc 500 Vdc 1000 VdcMax. operating voltage Ucpv 550 Vdc 1100 VdcProtection Modes MC MCNominal discharge current 8/20s In 40 kA 40 kALightning current 10/350s Iimp 12,5 kA 12,5 kAProtection level Up 1,7 kV 2,4 kVRemote controlled version DS60PVS-500 DS60PVS-1000

DS50PV-1000

DS50PVS-500

DS60PV-500


888888888888888888888888888888888888888888888888888888888888888888888888888888888888

+AC

DC

-

to

Vto

V

L

ND DDR

S

CPdcPbt

Surge protection panels for PV installations

Main features Panels for AC side and DC of the PV inverters. Compliant with the UTE C15-712 guide. High resistance panels for use in all conditions. Easy installation and access for a best maintenance. Transparent cover for quick inspection. Switching. PV voltage up to 1000Vdc. Fuse protection (panels > 3 strings). Specifi c version on demand. Disconnecting switch handle with padlock.

Protection principle by panel as defi ned by UTE C15-712

In compliance with the UTE C15-712 guide, CITEL proposes a complete

range of panel integrated solutions tha include surge protectors, over

current protection, diff erential circuit breaker, switchning and connection.

Those panels are designed to be installed on AC and PV access of the

photovoltaic inverter. Numerous confi guration are available

Pbt : 1-phase surge protector Type 2 D : External disconnector of the surge protector DDR : Differential breaker 25A/30 mA

Pdc : DC surge protector Type 2 for PV (DS50PV) S : DC switchC : Terminal connection board for strings

towards-TGBT

CPV240AC Surge protector panel + differential breaker Photovoltaic

inverter

CPV50DC surge protector panel+ switching+ connection strings

9

D

DS240-230/G

NL

NL

NL

NL

NL

Type 2

Imax40kA

C25 30mA C20

Test

onduleurinverter

=~

Surge Protection for PV

The CPV240 surge protector panel are designed to protect against the overvoltages caused by lightning, the low voltage side of the PV inverter linked to the low voltage network. They integrate the following functions :

Protection against the overvoltages (surge protector CITEL DS240) compliant with the NF EN 61643-11standard

Line and diff erential breaker Connection to network

The CPV240 panels are available for 1-phase 230V network and several line currents and comply with the UTE C15-712 Guide requirement about the photovoltaic installations linked to low voltage network.Specifi c versions by request.

Electrical diagram

Surge protection panel for PV inverter - AC side

CPV240AC surge protector panel for 1-phase PV inverter

Characteristics CPV240-230-xx-DDRNetwork Un 230 V single phase

Max. current (xx) 16 - 20 - 25 - 32 A

Connection to network (Max. cable cross-section) 4 mm max

Safety DS240-230/G

Thermal disconnector inside the surge protector

Disconnection indicator indicator on the surge protector

Overvoltage protection by circuit-breaker in the surge protector branch

Overcurrent protection by line circuit-breaker (16 to 32 A rating)

Protection against indirect contact by diff. circuit breaker 30 mA

Type 2 SPD DS240-230/G

Max. operating voltage Uc 255 Vac

Nominal discharge current In 20 kA

Maximum discharge current Imax 40 kA

Protection level Up 1.5/1.25 kV

Mechanical characteristics

Protection class IP55

Dimensions (H x L x P) mm 198 x 255 x 108

Housing material Polycarbonate UL 94 V0

Switchgear access Transparent door

Cable path by cable gland

TowardsTGBT

TowardsPV inverter

Breaker 25 A+ differential 30 mAL

NPE

vers Terre de l'installation

TGBTRseau230 V


10

-

-PE

+

+

DS50PV

-+

CPV range PV surge protector panel

50 Type 260 Type 1

Number of Strings

CPV 50-1000-3ST/FUSPD

Max. PV DC voltage (Uocstc)

- with DC switch, without fuse (standard) NS without DC switchFUS10 with fuse on line (ex: 10 A)

500 500Vdc600 600Vdc800 800Vdc1000 1000Vdc

3ST 3 strings 8ST 8 strings 4ST 4 strings 10ST 10 strings 6ST 6 strings 14ST 14 strings

Breakers and Fuses

The CPV50 surge protection panels are designed to protect, against overvoltages due to lightning, the DC part of the PV inverters. They integrate the following functions :

Protection against overvoltages (surge protector CITEL DS50PV) compliant with NF EN 61643-11 standard

Switching Line fuse on string (panels > 3 strings) Connection of the strings

The panels CPV50 are available with the voltage Uocstc 500, 600 800 and 1000 Vdc and for several short circuits current (Iscstc). They comply with the requirements of the UTE C15-712 Guide on the Photovoltaic installations connected to AC network.The panels have a protection indice and a resistance to the impacts adapted to rough use conditions.Specifi c version are available on demand.

Surge protection panel for PV inverter - DC side

Reference system

CPV50

Electrical diagramversonduleur PV

versstrings

sectionneur

Fusible(option)

1111

Red/Rouge: to replace

DS50PV-500

+

Uc 530 VdcUn 500 Vdc

Parafoudre DCSurge Protector

Up 2.2kV

In 20kAImaxT2 40kA


DS50PV-500

-



Up 2.2kV

In 20kAImaxT2 40kA

M16 M16 M16

M12

M12 M12

M12 M12 M12

onduleurinverter

=~

modules+ in

modules- in+

out-

out


CPV50-500-3STCPV50-600-3ST3 strings surge protection panel500 Vdc - Switch

Characteristics CPV50-500-3ST CPV50-600-3STNumber of strings 3 3

Max. voltage PV Uocstc 500 Vdc 600 Vdc

Max. current Iscstc 20 A 20 A

Connection to network (Max. cable cross-section) 6,5 / 10 mm

2 6,5 / 10 mm2

Switching yes yes

Fuse protection by string no no

Type 2 SPD DS50PV-500 DS50PV-600

Max. operating voltage Ucpv 530 Vdc 680 Vdc

Nominal discharge current In 20 kA 20 kA

Maximum discharge current Imax 40 kA 40 kA

Protection level Up 1.8 kV 2,5 kV


Protection level IP65 IP65

Dimensions (H x L x P) mm 305 x 225 x 125 305 x 225 x 125

Housing material ABS PC ABS PC

Knob type Lockable Lockable

PV Surge Protection Panels


12


DS50PV-800

+



Up 3kV

In 20kAImaxT2 40kA


DS50PV-800



Up 3kV

In 20kAImaxT2 40kA


DS50PV-800

-



Up 3kV

In 20kAImaxT2 40kA

M16 M16 M16

M12

M12 M12

M12 M12 M12

onduleurinverter

=~

modules+ in

modules- in+

out-

out


CPV50-800-3STCPV50-1000-3ST3 strings surge protection panel800 and 1000 Vdc - 25 ASwitch

Characteristics CPV50-800-3ST CPV50-1000-3STNumber of strings 3 3

PV maximum voltage Uocstc 800 Vdc 1000 Vdc

Max. current Iscstc 25 A 25 A


2 6,5 / 10 mm2

Switching yes yes

Fuse protection by string option option

Parafoudre Type 2 DS50PV-800 DS50PV-1000

Max. operating voltage Ucpv 840 Vdc 1060 Vdc

Nominal discharge current In 20 kA 20 kA

Maximum discharge current Imax 40 kA 40 kA

Protection level Up 3 kV 3,6 kV


Protection class IP65 IP65

Dimensions (H x L x P) mm 305 x 225 x 125 305 x 225 x 125

Housing material ABS PC ABS PC

Knob type Lockable Lockable

1313

10.3 x 38PV 1000Vdc

DO NOT OPERATEUNDER LOAD

10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc

UNDER LOAD


DS50PV-1000

+



Up 3V

In 20kAImaxT2 40kA


DS50PV-1000



Up 3V

In 20kAImaxT2 40kA


DS50PV-1000

-



Up 3V

In 20kAImaxT2 40kA

M16 M16 M16M12 M12

M12 M12

M12M12

M12 M12

onduleurinverter

=~

modules+ in

modules- in+

out-

out



CPV50-1000-4ST/FUS104 strings surge protection panel1000 Vdc - 25 ASwitchFuse

Characteristics CPV50-1000-4ST/FUS10Number of strings 4

Max. voltage PV Uocstc 1000 Vdc

Max. current Iscstc 25 A


2

Switching yes

Fuse protection by string 10 A

Type 2 SPD DS50PV-1000

Max. operating voltage Ucpv 1060 Vdc


Max discharge current Imax 40 kA

Protection level Up 3,6 kV




Housing material GR Polyester/PC

Knob type Lockable


14

10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc



DS50PV-1000

+



Up 3.6V

In 20kAImaxT2 40kA


DS50PV-1000



Up 3.6V

In 20kAImaxT2 40kA


-



Up 3.6V

In 20kAImaxT2 40kA

M20 M20 M20M12 M12 M12

M12 M12 M12

M12 M12 M12

M12 M12 M12

onduleurinverter

=~

modules+ in

modules- in+

out-

out

CPV50-1000-6ST/FUS106 strings surge protection panel1000 Vdc - 25 ASwitch - Fuses





2

Switching yes






Protection level Up 3,6 kV





Knob type Lockable


15

10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


OFF

ON

125A 4PUeIe

48V125A/1p*

110V125A/2p*

220V125A/3p*

400V125A/4p*

600V80A/4p*

800V63A/4p*

55DC4014INTERRUPTOR SECCIONADORSwitch-disconnector * poles in series

Red/R

ouge: to replace

DS

50PV

-800

+Uc840 V

dcU

n800 V

dc

Parafoudre D

CS

urge Protector

Up

3kV

In20kA

Imax

T240kA

Red/R

ouge: to replace

DS

50PV

-800

Uc

840 Vdc

Un

800 Vdc

Parafoudre D

CS

urge Protector

Up

3kV

In20kA

Imax

T240kA

Red/R

ouge: to replace

DS

50PV

-800

-

Uc

840 Vdc

Un

800 Vdc

Parafoudre D

CS

urge Protector

Up

3kV

In20kA

Imax

T240kA

M20 M20 M20M12 M12 M12M12 M12 M12 M12 M12 M12M12 M12 M12

onduleurinverter

=~

modules+ in

modules- in+

out-

out

SORTIEOUTPUT

SORTIEOUTPUT

TOUJOURS SOUS TENSIONALWAYS UNDER VOLTAGE 800V

ENTREINPUT

ENTREINPUT







2

Switching yes






Protection level Up 3 kV





Knob type Lockable



16111111666666666666616611161661661611111

Surge protection panels for Photovoltaic farms

Main Features

High resistance enclosure for use in all conditions.

Easy installation with simple access for an optimized

maintenance.

Transparent cover for quick inspection.

Switching up to 125 A. PV voltage up to 1000Vdc. Fuse protection. Specifi c version by request.

The panels devoted to the junction, switching and protection of Photovoltaic Power Plants are designed for specifi c

conditions of use, performance and maintenance

1717

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M16

M25 M25 M25

onduleurinverter

=~

modules+ in

modules- in+

out-

out

10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc



DS50PV-800

+



Up 3V

In 20kAImaxT2 40kA


DS50PV-800



Up 3V

In 20kAImaxT2 40kA


DS50PV-800

-



Up 3V

In 20kAImaxT2 40kA

OFF

ON

125A 4PUeIe

48V125A/1p*

110V125A/2p*

220V125A/3p*

400V125A/4p*

600V80A/4p*

800V63A/4p*


ENTREINPUT

+

ENTREINPUT

-

SORTIEOUTPUT-

SORTIEOUTPUT+




Caractristiques CPV50-600-10ST/FUS10Number of strings 10

PV max voltage Uocstc 600 Vdc


Connection to network (Max. cable cross-section) 10 / 18 mm

2

Switching yes






Protection level Up 2.5 kV





Knob type Lockable



M16 M16 M16 M16 M16

M16 M16 M16 M16 M16

M16 M16 M16 M16

M16 M16 M16 M16 M16

M16 M16 M16 M16 M16

M16 M16 M16 M16

M25 M25 M25

onduleurinverter

=~

modules+ in

modules- in+

out-

out

10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


10.3 x 38PV 1000Vdc


OFF

ON

125A 4PUeIe

48V125A/1p*

110V125A/2p*

220V125A/3p*

400V125A/4p*

600V80A/4p*

800V63A/4p*



DS50PV-800

+



Up 3V

In 20kAImaxT2 40kA


DS50PV-800



Up 3V

In 20kAImaxT2 40kA


DS50PV-800

-



Up 3V

In 20kAImaxT2 40kA

SORTIEOUTPUT-

SORTIEOUTPUT+


ENTREINPUT

+

ENTREINPUT

-



PV max. voltage Uocstc 800 Vdc


Connection to network (Max. cable cross-section) 10 / 18 mm

2

Switching yes






Protection level Up 3 kV





Knob type Lockabke


www.klinkmann.lv

Klinkmann LatGanbu dambis 2a, Rga, LV-1045

Tlr. +371 67 38 1615, +371 67 38 1617Fakss +371 67 38 2451

surge protection for photovoltaic systems -...

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