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CONTENTS

Photovoltaic (PV) modular SPDs

Technical data sheet: F01271EN_01 

Updated:  

Created: 31/10/2017

Cat. No(s): 4 141 55/56/85/86

  4. POSITIONING, CONNECTION (continued)

4.4   Maintenance

Checking the installation insulation resistance

Disconnect the SPDs (remove the cassettes) before checking the 

installation insulation resistance.

Module maintenance

A modular SPD can be replaced without disconnecting the other 

products.

Put the latch clip in  

the unlocking position.

Tilt the device forward 

and release the upper  

hook from the rail

Associated protection device

No external associated protection is necessary for currents below 125 A 

(4 141 56) and 50 A (4 141 55).

Installing cascaded SPDs

When panels are more than 10 m away from the inverter (from the DC 

enclosure incorporating the DC SPD protecting the inverter), a DC SPD 

is also recommended close to the panels (see section 4.5 and 4.6).

Connection

. IP20 protected terminals, with wired device
. Cage terminals with quick release captive screws
. Terminals fitted with flaps preventing a cable being placed under 

the terminal, with the terminal partly open or closed
. Terminal depth: 14 mm

Connection cross-sections and lengths to be stripped

Permitted conductors

- Flexible

- Rigid

4 to 25 mm²

6 to 35 mm²

Tools required

-  Flat screwdriver

-  PZ Phillips screwdriver

Ø4 to 6.5 mm

PZ2

Tightening torque

- min.

- max.

- recommended

2.5 Nm

3.0 Nm

2.7 Nm

  4. POSITIONING, CONNECTION (continued)

4.5   Connecting the PV SPD

4.6   Earth connections and equipotentiality in the PV installation

Equipotentiality of all the earths is essential to ensure correct voltage 

surge protection of the whole PV electrical installation and the 

consumption part.

Check that the earth connection to which exposed conductive parts in 

the installation are connected complies with standard NF C 15-100  

(IEC 60364).

0.5 m
0.5 m
0.5 m

0.5 m
0.5 m
0.5 m

0.5 m

Содержание 4 141 55

Страница 1: ...ction 4 5 and 4 6 SPD connected to the mains supply and to the protective conductor PE using as short a connection as possible 50 cm Electromagnetic compatibility rules avoid loops fix the cables firmly against the exposed metal conductive parts Compulsory connection of the earth terminal on the SPD to the protective conductor PE in the distribution board Equipotentiality rules interconnection of ...

Страница 2: ...also recommended close to the panels see section 4 5 and 4 6 Connection IP20 protected terminals with wired device Cage terminals with quick release captive screws Terminals fitted with flaps preventing a cable being placed under the terminal with the terminal partly open or closed Terminal depth 14 mm Connection cross sections and lengths to be stripped Permitted conductors Flexible Rigid 4 to 25...

Страница 3: ...vel Up at In 5 kA 1 9 kV 3 2 kV Max operating current Iscpv 50 A 2 125 A 2 Max line current IL 40 A Residual current at Ucpv Ipe 1 mA Response time 25 ns Max terminal capacity flexible wire with cable ends rigid wire 25 35 mm Number of ports 1 Location category Indoor Installation method Permanent Number of modules 3 Protection index IP 20 IK 04 Pollution level 2 Operating temperature 25 C to 60 C...

Страница 4: ... equipment room in which the main LV distribution board is installed 3 When a PV installation is protected by lightning conductors it is advisable to create an isolated lightning protection system isolated LPS as described in standard NF EN 62305 maintaining adequate separation distances between the metal structures of the panels and the LPS lightning conductors and downcomers 6 LEGRAND RECOMMENDA...

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