Protection Settings
43
TemBreak
PRO
P_SE-UM-001-EN
– V1.2.0
Ground/Earth Fault Protection (GF)
Ground Fault protection is protection against high strength insulation / earth faults. Ground fault is available with 3P and 4P P_SE MCCBs as standard.
Adjusting l
g
(Current)
The l
g
trip threshold tolerance for ground fault protection is ±10%.
When the I
g
threshold is OFF, ground fault protection is deactivated.
Adjustments to I
g
trip threshold can be made using one or a combination of the below methods:
-
P_SE OCR embedded display
-
TPED
-
TPCM
Rating l
n
(A)
I
g
Trip Threshold Adjustment Settings (x I
n
)
0.05 x I
n
increments
40
0.4
…
1.0
–
OFF
100
0.2
…
1.0
–
OFF
160
250
400
630
Ground Fault Protection Settings Description
G
I
g
(x I
n
)
Ground fault current trip threshold
t
g
(ms)
Ground fault time delay
I²t
g
(ON / OFF)
Inverse time I
2
t function
0.
70
xIn
Ig
Notice
: Enabling GF for 3 pole MCCBs on a 4-wire system may result in nuisance tripping in the case of
imbalanced loads. It is recommended in this case that GF should be disabled.
Содержание Terasaki TemBreak PRO P SE Series
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