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installation
(cont.)
20 A SineWave™
Table of recommended protections per rating
Connection to the SineWave™ terminal block where Pcu = function of Isc
Non-distributed neutral
IT earthing system
C60 3x32 A curve Z IT earthing
system
TT earthing system
C60 3x32 A curve Z
with Vigi C60 moduleTT earthing
system
Important: upstream breaking devices should be set in
such a way as to guarantee good discrimination with the
circuit-breakers recommended on this page.
Key: Is = sizing current
Pcu = breaking capacity
Isc = short-circuit current
10
Is = 25 A
1
2
3
N
Is = 25 A
1
2
3
N
installation and operation manual of SineWave™: E-51027008XT/AD
Distributed neutral
IT earthing system
Vigi Compact NS100
STR22SE 100 A 4p 3d
magnetic threshold set at 2 x I nom
neutral protection via Vigi
sensitivity: 10 A
TT earthing system
Vigi Compact NS100
STR22SE 100 A 4p 3d
magnetic threshold set at 2 x I nom
sensitivity: depending on the installation
TNC earthing system
PEN
C60 3x32 A curve Z
TNS earthing system
NS100 STR22SE 100 A 4p 3d
magnetic threshold set at 2 x I nom
Is = 25 A
1
2
3
Is = 65 A
N
Is = 25 A
1
2
3
Is = 65 A
N
Is = 25 A
1
2
3
N
Is = 65 A
Is = 25 A
1
2
3
Is = 65 A
N
PE
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