Siemens Sentron 3VA Manual page 123

ETU830 parameters, 4-pole
Overload protection L:
•
•
The ETU830 LI has a permanently active thermal memory.
Instantaneous short-circuit protection I:
•
Ground-fault protection G:
•
•
An alarm threshold I
The ground-fault protection can not be deactivated.
Neutral conductor protection N:
Protection of the neutral conductor is available only for 4-pole molded case circuit breakers.
•
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
3.1 Use of the 3VA UL molded case circuit breakers in line protection
I Adjustable from 0.4 to 1.0 x I
r
I = 40 A: In steps of 0.5 A
r
I ≥ 100 A: In steps of 1 A
r
t Adjustable from 0.5 to 13 / 15 / 17 / 20 / 25 s (dependent on rated operational
ld
current and frame size)
with a reference point of 6 x I
In steps of 0.1 s
I Adjustable from 1.5 to 9 / 10 / 11 / 12 x I
i
current and the frame size):
In steps of 1 A
I Adjustable from 0.2 / 0.4 to 1.0 x I
g
In steps of 1 A
t Adjustable from 0.05 to 0.8 s
g
with a reference point of 2 x I
In steps of 0.01 s
of 0.2 / 0.4 to 1 x I
gA
I I = 40 A: 0.4 to 1.6 x I
N n
I ≥ 100 A: 0.2 to 1.0 or 1.6 x I
n
in absolute current values
n
.
r
(dependent on the rated operational
n
in absolute current values
n
g
can also be set. In steps of 1 A
n
n
n
Applications
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