FUNCTION CHARACTERISTICS
127
NA30 - Manual - 04 - 2022
Fun-CB-diagnostic.ai
CB Diagnostic - Number of
trips
CB Diagnostic - Cumulative tripping currents
CB Diagnostic - Cumulative tripping energy I2t
CB Diagnostic - CB operating time
From CB position
N.Open-K
N.Open-L
SumI-K
SumI-L
SumI^2t-K
SumI^2t-L
tbreak-K
tbreak-L
TR
IP
PIN
G
M
AT
RIX
(
LE
D+R
EL
AY
S)
TR
IP
PIN
G
M
AT
RIX
(
LE
D+R
EL
AY
S)
TR
IP
PIN
G
M
AT
RIX
(
LE
D+R
EL
AY
S)
State N.Open
t
break
State SumI
Opening transition
≥
N.Open
Mode-N.Open
&
From CB position
Opening transition
≥
Mode-tOpen
Ktrig-break
&
From CB position
SumIL3
SumIL2
SumIL1
Opening transition
≥
Sum I
SumI
Mode-SumI
Mode-SumI^2t
&
I
L2
∑
I
L1
I
Max
Max
∑
I
∑
I
I
L3
TR
IP
PIN
G
M
AT
RIX
(
LE
D+R
EL
AY
S)
State SumI^2t
State tbreak
From CB position
SumIL3^2t
SumIL2^2t
SumIL1^2t
Opening transition
≥
Sum I^2t
Sum I^2t
&
I
L2
∑
I
L1
I2t
∑
I2t
∑
I2t
Max
Max
I
L3
