LEGRAND 4 141 55, 4 141 56, 4 141 85, 4 141 86 Technical Data Sheet
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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
1. DESCRIPTION, INSTALLATION
1.1 Description
Type 2 SPDs for photovoltaic (PV) installations with voltages which may
reach a maximum voltage (Uocmax) of 1200 VDC (irrespective of the
local environmental, temperature, sunlight conditions, etc).
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 an energy storage system (e.g. batteries, etc)
Equipped with replacement plug-in modules with LED indicators (red
LED: modules need to be replaced).
* equipped with status feedback
1.2 Installation
SPDs must not be installed in locations where there is a risk of fire or
explosion without special precautions. They must be disconnected
before checking the installation insulation resistance.
Connections as per section 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 the exposed conductive parts
of the equipment and the protective conductor (PE) in the distribution
board, which is itself connected to the earth terminal of the SPD (see 4.6).
2. RANGE
Cat. No. Description Reference voltage
4 141 55
Base + Cartridges
(4 141 85 x3)
600 VDC
4 141 56
Base + Cartridges
(4 141 86 x3)
1000 VDC
4 141 85 Replacement cartridge 600 VDC
4 141 86 Replacement cartridge 1000 VDC
3. DIMENSIONS
4. POSITIONING, CONNECTION
4.1 Fixing
. On EN 60715 or DIN 35 symmetrical rail
4.2 Operating position
. Vertical Horizontal Side
4.3 Power supply
. 4 141 55/56: via the top
CONTENTS Page
1. Description, installation ..................1
2. Range ...................................1
3. Dimensions..............................1
4. Positioning, connection..................1
5. General characteristics ...................3
6. Legrand recommendations ..............4
7. Conformity ..............................4
8. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4 141 55/56 4 141 85/86
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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
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