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.
Summary of Contents for Terasaki TemBreak PRO P SE Series
Page 106: ...106 TemBreak PRO P_SE UM 001 EN V1 2 0 Annex A Dimensions P160 Dimensions...
Page 107: ...Annex A Dimensions 107 TemBreak PRO P_SE UM 001 EN V1 2 0 P250 Dimensions...
Page 108: ...Annex A Dimensions 108 TemBreak PRO P_SE UM 001 EN V1 2 0 P400 Dimensions...
Page 109: ...Annex A Dimensions 109 TemBreak PRO P_SE UM 001 EN V1 2 0 P630 Dimensions...
Page 111: ...111 TemBreak PRO P_SE UM 001 EN V1 2 0 Annex C I2t Let Through Curves P160_SE...
Page 112: ...Annex C I2t Let Through Curves 112 TemBreak PRO P_SE UM 001 EN V1 2 0 P250_SE...
Page 113: ...Annex C I2t Let Through Curves 113 TemBreak PRO P_SE UM 001 EN V1 2 0 P400_SE...
Page 114: ...Annex C I2t Let Through Curves 114 TemBreak PRO P_SE UM 001 EN V1 2 0 P630_SE...
Page 115: ...115 TemBreak PRO P_SE UM 001 EN V1 2 0 Annex D Peak Let Through Curves P160_SE...
Page 116: ...116 TemBreak PRO P_SE UM 001 EN V1 2 0 P250_SE...
Page 117: ...117 TemBreak PRO P_SE UM 001 EN V1 2 0 P400_SE...
Page 118: ...118 TemBreak PRO P_SE UM 001 EN V1 2 0 P630_SE...
Page 121: ...121 TemBreak PRO P_SE UM 001 EN V1 2 0 This page is intentionally left blank...