Specifications are subject to change without notice
1
Type EUK
Current and Voltage Controls
1-Phase Over/Under Voltage
AC monitoring relay for over/under
voltage control (closed circuit)
Measures if power supply is within set limits
Measures on own power supply
3-position rotary switch for selection of measuring range
Measuring range: 24-115-230, 13% VAC (RMS)
Upper and lower limits separately adjustable
Adjustable time function (0.1-10 s)
Output: 5 A SPDT
For mounting on DIN-rail in accordance with
DIN/EN 50 022
45 mm Euronorm housing
LED-indication for power supply ON
Two LED's indicating fault and/or status of the relay
output (flashing when timing)
Ordering Key
Housing
Function
Type
Output
Power supply
tor that the fluctuation of the
delivered power is kept within
set limits so that the connect-
ed equipment will not be da-
maged.
EUK is a single-phase moni-
toring relay for separate over
and under voltage control.
Built-in time function 0.1-10
s. Often used in applications
where it is essential to moni-
EUK C T23
Product Description
Input Specifications
Input
Through terminals A1 & A2
Measures on own supply
Measuring ranges
Upper level
Lower level
Selectable by rotary switch
-10%-13%
-13%-10%
24 VAC
21.6-27.1 V
20.9-26.4 V
115 VAC
103.5-130 V
100-126.5 V
230 VAC
207-260 V
200-253 V
measuring range equals
rms value of a sinusoidal
voltage
Hysteresis
< 2%
Type Selection
Mounting
Output
Measuring ranges
Supply: 24/115/230 VAC
For DIN-rail
SPDT
24,115 or 230 VAC
EUK C T23
Supply Specifications
Power supply
Overvoltage cat. III (IEC 60664)
Rated operational voltage
(IEC 60038)
Through term. A1 & A2 T23
115-230 VAC, 15%
50/60 Hz, -5/+5 Hz
Through term. A1 &A2 T23
24 VAC, 15%
(Interconnec. term. A1 & A3)
50/60 Hz, -5/+5 Hz
Voltage interruption
40 ms
Dielectric voltage
None
Rated impulse withstand
voltage
4 kV (1.2/50 s)
Rated operational current
55 mA @ 24 VAC
25 mA @ 115 VAC
50 mA @ 230 VAC
Output Specifications
Output
SPDT relay
Rated insulation voltage
250 VAC (contact/elect.)
Contact ratings (AgCdO)
(micro gap)
Resistive loads
AC 1
5 A, 250 VAC
DC 1
5 A, 24 VDC
Small inductive loads AC 15
2 A, 250 VAC
DC 13
3 A, 24 VDC
Mechanical life
40 x 10
6
operations
Electrical life
10
5
operations
(at max. load)
Operating frequency
7200 operations/h
Dielectric strength
Dielectric voltage
2 kVAC (rms)
Rated impulse withstand volt. 4 kV (1.2/50 s)
2
Specifications are subject to change without notice
EUK
General Specifications
Mode of Operation
EUK measures the rms value
of its own sinusoidal power
supply.
The relay operates and both
yellow LED's are ON as long
as the measured voltage is
within the upper and lower
limits.
The relay releases after an ad-
justable time delay of 0.1-10 s
when the measured voltage is
above the upper level or be-
low the lower level.
The yellow LED indicating
upper/lower level is flashing
until the time delay has ex-
pired.
When the relay has released,
the flashing LED is switched
OFF.
EUK has a power-up delay of
approx. 2 s to prevent the re-
lay from operating if the meas-
ured voltage is above/below
the set limits when power sup-
ply is applied.
Power ON delay
< 2 s
Reaction time
< 200 ms,
worst case reaction time
may be up to 5 x
adjustable delay on release
built-in (0.1-10 s)
Accuracy
Input
5%
OFF-delay
10 s, -1/+3 s on max.
0.1 s on min.
Temperature drift
0.2%/C (
0.11%/F)
Indication for
Power supply ON
LED, green
Output ON
2 LED's, yellow (indicating
upper/lower level)
Environment
Degree of protection
IP 20
Pollution degree
3
Operating temperature
-20 to +50C (-4 to +122F)
Storage temperature
-50 to +85C (-58 to +185F)
Weight
165 g
Screw terminals
Tightening torque
Max. 0.5 Nm acc. to IEC 60947
Approvals
UL, CSA
Hysteresis
Operation Diagram
Wiring Diagram
N
L
24 V ~
115-230 V ~
Range/Level/Time Setting
Level setting
Upper left knob :
Setting of upper limit on rela-
tive scale in % (-10 to +13%).
Lower left knob:
Setting of lower limit on rela-
tive scale in % (-13 to +10%).
Range setting
Upper right knob:
Setting of voltage measuring
range on rotary switch.
Time setting
Lower right knob:
Setting of time delay on abso-
lute scale (0.1-10 s).
Upper level
Lower level
Relay ON
Hysteresis
Power supply
PDF 
ZIP