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IV Function diagrams
a) ON-delayed
over- and undervoltage monitoring
EMR5-W
L1, L2, L3
> U
> U - 5 %
Measuring 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
EMR5-W
L1, L2, L3
> U
> U - 5 %
Measuring 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
EMR5-A
L1, L2, L3
Unbalance
L3
Unbalance -Hyst.
Measuring 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
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<t v
t v
t v
<t v
<t v
<t v
t v
d) Phase sequence and phase failure monitoring
EMR5
L1, L2, L3
Measuring 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
e) Phase sequence and phase failure monitoring
EMR4-F500-2
L1, L2, L3
Measuring value
L1, L2, L3
L1, L3, L2
t
s
11-14
11-12
21-24
21-22
R: yellow LED
t
= start-up delay fixed 500 ms
s
L1, L2, L3
L1, L2
L1, L2, L3
L1
L1, L2, L3
L3
L2, L3
L1, L2, L3
L1, L2
L1, L2, L3
L1
L1, L2, L3
L3
L2, L3
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