Function Diagrams - ABB CM Série Instructions De Montage Et De Mise En Service

IV Function diagrams
a) ON-delayed
over- and undervoltage monitoring
L1, L2, L3
> U
> U - 5 %
Measured value
< U + 5 %
< U
t s t v
15-18
15-16
25-28
25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = start-up delay fixed 200 ms
s
t = adjustable tripping delay
v
b) OFF-delayed
over- and undervoltage monitoring
L1, L2, L3
> U
> U - 5 %
Measured value
< U + 5 %
< U
t s
15-18
15-16
25-28
25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = start-up delay fixed 200 ms
s
t = adjustable tripping delay
v
c) ON-delayed
phase unbalance monitoring
L1, L2, L3
Unbalance
L3
Unbalance -Hyst.
Measured value
L1, L2, L3 L1, L2
Unbalance +Hyst.
Unbalance
t s t v
15-18
15-16
25-28
25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = start-up delay fixed 200 ms
s
t = adjustable tripping delay
v
<t v t v
t v <t v <t v
<t v t v
d) OFF-delayed
phase unbalance monitoring
L1, L2, L3
Unbalance
L3
Unbalance -Hyst.
Measured value
L1, L2, L3 L1, L2
Unbalance +Hyst.
Unbalance
t s
15-18
15-16
25-28
25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = start-up delay fixed 200 ms
s
t = adjustable tripping delay
v
e) Phase sequence and phase failure monitoring
L1, L2, L3
Measured value
L1, L2, L3 L1, L3, L2
t s
15-18
15-16
25-28
25-26
F1: red LED
F2: red LED
R/T: yellow LED
t = start-up delay fixed 200 ms
s
t v <t v <t v
L1, L2, L3 L1, L2 L1, L2, L3 L1 L1, L2, L3
L3 L2, L3
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