Formula characters and abbreviations in accordance with EN
61439-1/-6
86
Technical changes reserved
9
Formula characters and abbreviations in accordance
with EN 61439-1/-6
Important formula characters first mentioned in EN 61439-1/-6*
Abbreviation Description
Standard section 61439-1/-6*
(initial mention)
CTI
Comparative figure of tracking
EN 61439-1, 03/06/2016
ELV
Low voltage
EN 61439-1, 03/07/2011
EMC
Electromagnetic compatibility
EN 61439-1, 3.8.13
f
n
Rated frequency
EN 61439-1, 03/08/2012
I
c
Short-circuit current
EN 61439-1, 3.8.6
I
cc
Conditional short-circuit current
EN 61439-1, 3.8.10.4
I
cp
Prospective short-circuit current
EN 61439-1, 3.8.7
I
cw
Rated short-time withstand current
EN 61439-1, 3.8.9.3
I
n
Rated current
EN 61439-1, 3.8.10.1
I
nA
Rated current of a
switchgear combination / BTS
EN 61439-1, 5.3.1,
Supplement in
EN 61439-6, 5.3.1
I
nc
Rated current of a circuit
EN 61439-1, 5.3.2,
Supplement in EN 61439-6, 5.3.2
I
pk
Rated peak withstand current
EN 61439-1, 3.8.10.2
N
Neutral conductor
EN 61439-1, 3.7.5
PE
Protective conductor
EN 61439-1, 3.7.4
PEN
PE/N conductor, PEN conductor
EN 61439-1, 3.7.6
RDF
Rated diversity factor
EN 61439-1, 3.8.11 / 5.4
Replacement in EN 61439-6, 5.4
SCPD
Short-circuit protective device
EN 61439-1, 03/01/2011
SPD
Surge protective device
EN 61439-1, 03/06/2012
U
e
Rated operational voltage
EN 61439-1, 3.8.9.2
U
i
Rated insulation voltage
EN 61439-1, 3.8.9.3
U
imp
Rated impulse withstand voltage
rated peak withstand current
EN 61439-1, 3.8.9.4 / 5.2.4
Replacement of comments in
EN 61439-6, 5.2.4
U
n
Rated voltage
EN 61439-1, 3.8.9.1
k
1A
Temperature factor of the BTS
EN 61439-6, 5.3.1
k
1c
Temperature factor of a circuit
EN 61439-6, 5.3.2
k
2c
Assembly factor of a circuit
EN 61439-6, 5.3.2
R, X, Z
Outer conductor and fault circuit
characteristics
EN 61439-6, 5.101
*According to the low-voltage directive and the EMC directive, EN 61439-1 does not
provide a presumption of conformity without another part of the standard being applied:
To achieve a presumption of conformity for busbar trunking systems BTS (busways), at
least EN 61439-1 and EN 61439-6 (Part 1 and Part 6 of the standard EN 61439) must be
applied.
Содержание Unibar H 800 A
Страница 1: ...Busbar system unibar H System manual 800 A to 4000 A...
Страница 10: ...Construction and characteristics 10 Technical changes reserved...
Страница 19: ...Construction and characteristics Technical changes reserved 19 Notices...
Страница 40: ...Product selection 40 Technical changes reserved Copper...