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87045 LIMOGES Cedex
Telephone: 05 55 06 87 87 – Fax: 05 55 06 88 88
Photovoltaic (PV) modular voltage
Photovoltaic (PV) modular voltage
Photovoltaic (PV) modular voltage
Photovoltaic (PV) modular voltage
surge protectors
surge protectors
surge protectors
surge protectors
Catalogue number(s): 4 141 50/51
Catalogue number(s): 4 141 50/51
Catalogue number(s): 4 141 50/51
Catalogue number(s): 4 141 50/51
4 141 50/51
CONTENTS
CONTENTS
CONTENTS
CONTENTS PAGES
1. General features .................................. 1-2
2. Overall dimensions ............................. 2
3. Technical features ............................... 2
4. Conformity ........................................... 3
5. Setup ................................................... 3
6. Accessories ......................................... 3
7. Maintenance ........................................ 4
1. GENERAL FEATURES
1. GENERAL FEATURES
1. GENERAL FEATURES
1. GENERAL FEATURES
1.1 Brief description
1.1 Brief description
1.1 Brief description
1.1 Brief description
Type 2 voltage surge protectors for photovoltaic (PV) installations
with voltages which may reach a maximum (Uocmax) of 1200 VDC
(irrespective of the local environmental, temperature, sunlight, etc.
conditions).
Specifically designed to protect the DC part of PV installations
(PV panels and inverters)
- Based on the use of non-polarised panels (panels which do
not require their active conductors to be earthed)*
- Without energy storage system (e.g. batteries, etc.)
Equipped with draw-out replacement cassettes with LED indicators (red
LED: cassettes need to be replaced).
* Please contact us for installations with polarised panels
1.2 Use
1.2 Use
1.2 Use
1.2 Use
1.2.1 Legrand recommendations
1.2.1.1 Protection of the DC part of the PV installation
To provide correct voltage surge protection of the DC part of the
PV installation, a PV voltage surge protector is recommended:
- On each inverter input
(1)
(in the DC enclosures in accordance with
guide UTE C 15-712-1, voltage surge protector compulsory according
to the type and location of the installation to be protected, see
UTE C 15-712-1)
- Close to the panels (in the group junction boxes according to guide
UTE C 15-712-1) when they are more than 10 m away from the
inverter or the DC enclosure
(2)
(1)
For multi-input inverters or multi-MPPT, it is advisable to use a
voltage surge protector on each input
(2)
PV generators with a Uocmax voltage of less than 600 V:
According to guide UTE C 15-712-1, this protection is only necessary
if Legrand 600 V voltage surge protectors are installed close to the
inverters. However this protection is recommended for widespread
PV installations with very long lines.
1.2.1.2 Protection of the AC part of the PV installation
Likewise, for correct protection of the AC part of the
PV installation, it is advisable to group the inverters together in
the same equipment room as the main panel (main LV distribution
board) connecting the PV installation to the LV distribution
system. Thus a single AC voltage surge protector
(1)
is all that is
necessary to protect the main LV distribution board (voltage surge
protector compulsory according to the type and location of the
installation to be protected, see UTE C 15-712-1).
If the inverters are not installed in the equipment room in which the
main LV distribution board is located (or are installed out of doors) an
AC voltage surge protector is also necessary close to each inverter.
Recommended types of AC voltage surge protector:
Power of the
PV installation
Main LV board prot.
Installations with
lightning conductors
(3)
Main LV board prot.
Installations w/out
lightning conductors
Protection
close to
inverters
(2)
P < 36 kWc
Type 1
(Iimp 12.5 kA)
protected
v. surge protector
protected
v. surge protector
P < 100 kWc
Type 1
(Iimp 25 kA)
Type 2
(Imax 70 kA)
Type 2
(Imax 15 kA)
P > 100 kWc
Type 1
(Iimp 25 kA)
Type 1
(Iimp 25 kA)
Type 2
(Imax 40 kA)
(1)
An additional AC voltage surge protector is also necessary close
to each inverter that is more than 10 m away from the main LV
distribution board. This voltage surge protector must be the same
type as those used close to the inverters (see above table).
(2)
AC voltage surge protectors necessary close to each inverter that is
- More than 10 m away from the main LV distribution board
- Installed out of doors or outside the 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).
1.2.1.3 Protection of the AC part of the existing installation
(consumption part)
To ensure correct voltage surge protection of the whole installation
(PV installation and installation on the consumption side), it is
advisable to protect the AC installation on the consumption side so
as to avoid any possible risk resulting from overvoltage on the
PV installation or overvoltage from the distribution system.
Technical data sheet: F01271EN/00
Updated on:
Created on: 13/01/2012
