2
Specifications are subject to change without notice (10.01.00)
EUA
General Specifications
Reaction time
OFF-delay
< 30 ms
ON-delay
< 500 ms
Accuracy
±10%
Temperature drift
≤ 0.2%/°C (≤ 0.11%/°F)
Hysteresis
< 10%
Indication for
Power supply ON
LED, green
Output ON
LED, yellow
Environment
Degree of protection
IP 20
Pollution degree
3
Operating temperature
-20° to +50°C (-4° to +122°F)
Storage temperature
-50° to +85°C (-58° to +185°F)
Weight
280 g
Screw terminals
Tightening torque
Max. 0.5 Nm acc. to IEC 60947
Approvals
UL, CSA
CE-marking
Yes
Mode of Operation
EUA measures on its own 3-
phased power supply, and the
relay operates when all phases
are present and the phase se-
quence is correct.
The level of the monitored
voltage is adjustable on the
front of the module within
±15%. The relay releases when
one or more of the phases
drops below 70% of the set
level. (Ex. if the voltage regen-
erated by electric motors ex-
ceeds the 70% level, the set
level can be adjusted until the
relay releases).
Example 1
The relay monitors that the
power supply has the correct
phase sequence and that all
phase voltages are present.
Example 2
The relay releases in case of
interruption of one of the
phases, provided that the re-
generated voltage does not
exceed the 70% level (see
above).
Potentiometer for setting of
measuring range (line voltage).
Range Setting
Wiring Diagrams
Example1
Example 2
M
V
~
11
12
14
U
W
L3
L1
m< 3
L3
L2
L1
EUA C...
EUA D...
EUA T...
21
22
24
31
32
34
EUA D...
EUA T...
EUA T...
µ
µ
µ
V
~
11
12
14
U
W
L3
L1
m< 3
L3
L2
L1
21
22
24
31
32
34
EUA C...
EUA D...
EUA T...
EUA D...
EUA T...
EUA T...
µ
µ
µ
Operation Diagram
Power supply ON L1
Power supply ON L2
Power supply ON L3
Relay ON
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