The electrician's system: univers N - Hager

Earthing conductor connection univers N
for enclosure housing and carrier rails
Classification of minimum cross section of separately laid,
mechanical unprotected PE wire to the corresponding outer
wire cross sections.
Note: when using uninsulated wire (PE) no plastic insulation can
be touched.
Table 6
NHgL Fuse
PVC insulated
outer wire
Smallest related protective wire cross section from copper
(mechanical unprotected, lay separately as single circuit)
Copper PVC insulated insulated like
outer wires
uninsulated
wire used
uninsulated
I N [A] S [mm 2 ] S [mm 2 ] S [mm 2 ] S [mm 2 ] S [mm 2 ]
16 1.5 1.5 25
20 2.5 2.5 25
25 4 4 25
35 6 6 25
50 10 10 25
63 16 16 25
80 25 16 25
100 35 16 25
125 50 25 25
160 70 35 25
200 95 20.3 (25) 47.5 18.3 (25) 25
250 120 26.6 (35) 60 23.9 (25) 25
250 150 26.6 (35) 75 23.9 (25) 25
315 185 32.8 (35) 92.5 29.5 (35) 2 x 25
355 240 39.9 (50) 120 35.9 (50) 2 x 25
400 300 43.8 (50) 150 39.4 (50) 2 x 25
500 400 59.4 (70) 200 53.4 (70) 3 x 25
630 500 78.2 (95) 200 70.3 (70) 3 x 25
1) 2) 3) 4)
1) PVC insulated wire (30°C) Group 2 (DIN VDE 0100 T. 523);
Classification of gL fuses
2) Characteristics for PVC insulated PE according to DIN VDE
0100 T. 540/11.91 and rounding up to the next possible cross
section (values in brackets)
3) Minimum values for protective wire with same insulation material
as outer wires according to table 4, VDE 0660 T. 500
4) Characteristics for uninsulated mechanical unprotected copper
wire according to DIN VDE 0100 T.540/11.91 and rounding up
(values in brackets)
Comment: for the determination of PE cross section either see
Table 6 (values as per 3)
or the calculation when t = 5s, K = 159
(see values as per 4)
Thereby one of the installation regulations for adjusted earthing
can be kept; the copper wires from the univers range are to be
used
Univers N
System
Use of DIN Rails as earthing conductor - busbar
According to DIN VDE 0611 T.3/11.89 Paragraph 3.1.1 approved
rails, (including DIN rails complying with DIN EN 50 022) may be
used as protective earth conductor busbars, as long as the
values of thermal short circuit and thermal current rating, as outlined
in the table, are not exceeded.
Exception
Steel earth conductor busbars may not be used as PEN wires or
N wires. Therefore there is no values given in the table for max
allowable thermal rated current for PEN function.
Our steel device carrier rails according to DIN EN 50 022
DIN Rails according
to DIN EN 50 022
- Steel
Thermal short circuit
capacity circuit current
Max thermal short
according to a E Cu 1 second / kA
wire with cross
section
Installation is only possible for PE function and not for PEN
or N function
35 mm x 7.5 mm 16 1.92
35 mm x 15 mm 50 6
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