Current and Voltage Controls 1-Phase Over/Under Voltage Type EUK • 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) Product Description Ordering Key EUK is a single-phase monitoring 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- tor that the fluctuation of the delivered power is kept within set limits so that the connected equipment will not be damaged. Housing Function Type Output Power supply EUK C T23 Type Selection Mounting Output Measuring ranges Supply: 24/115/230 VAC For DIN-rail SPDT 24,115 or 230 VAC EUK C T23 Input Specifications Supply Specifications Input Through terminals A1 & A2 Measuring ranges Selectable by rotary switch 24 VAC 115 VAC 230 VAC Power supply Rated operational voltage Through term. A1 & A2 T23 Hysteresis Measures on own supply Upper level Lower level -10%-13% -13%-10% 21.6-27.1 V 20.9-26.4 V 103.5-130 V 100-126.5 V 207-260 V 200-253 V measuring range equals rms value of a sinusoidal voltage < 2% Output Specifications Output Rated insulation voltage Contact ratings (AgCdO) AC 1 Resistive loads DC 1 Small inductive loads AC 15 DC 13 Mechanical life Electrical life Through term. A1 &A2 T23 (Interconnec. term. A1 & A3) Voltage interruption Dielectric voltage Rated impulse withstand voltage Rated operational current Overvoltage cat. III (IEC 60664) (IEC 60038) 115-230 VAC, ±15% 50/60 Hz, -5/+5 Hz 24 VAC, ±15% 50/60 Hz, -5/+5 Hz ≤ 40 ms None 4 kV (1.2/50 µs) 55 mA @ 24 VAC 25 mA @ 115 VAC 50 mA @ 230 VAC SPDT relay 250 VAC (contact/elect.) µ (micro gap) 5 A, 250 VAC 5 A, 24 VDC 2 A, 250 VAC 3 A, 24 VDC ≥ 40 x 106 operations ≥ 105 operations (at max. load) ≤ 7200 operations/h Operating frequency Dielectric strength Dielectric voltage 2 kVAC (rms) Rated impulse withstand volt. 4 kV (1.2/50 µs) Specifications are subject to change without notice (26.10.99) 1 EUK General Specifications Mode of Operation Power ON delay Reaction time EUK measures the rms value of its own sinusoidal power supply. <2s τ < 200 ms, worst case reaction time may be up to 5 x τ adjustable delay on release built-in (0.1-10 s) Accuracy Input OFF-delay ±5% 10 s, -1/+3 s on max. ≤ 0.1 s on min. ≤ 0.2%/°C (≤ 0.11%/°F) Temperature drift Indication for Power supply ON Output ON LED, green 2 LED's, yellow (indicating upper/lower level) Environment Degree of protection Pollution degree Operating temperature Storage temperature Weight Screw terminals Tightening torque Approvals 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 adjustable time delay of 0.1-10 s when the measured voltage is above the upper level or below the lower level. The yellow LED indicating upper/lower level is flashing until the time delay has expired. When the relay has released, the flashing LED is switched OFF. EUK has a power-up delay of approx. 2 s to prevent the relay from operating if the measured voltage is above/below the set limits when power supply is applied. IP 20 3 -20° to +50°C (-4° to +122°F) -50° to +85°C (-58° to +185°F) 165 g Max. 0.5 Nm acc. to IEC 60947 UL, CSA Wiring Diagram Range/Level/Time Setting 115-230 V ~ 24 V ~ L µ Level setting Upper left knob : Setting of upper limit on relative scale in % (-10 to +13%). Range setting Upper right knob: Setting of voltage measuring range on rotary switch. Lower left knob: Setting of lower limit on relative scale in % (-13 to +10%). Time setting Lower right knob: Setting of time delay on absolute scale (0.1-10 s). N Operation Diagram Upper level Hysteresis Lower level Hysteresis Power supply Relay ON 2 Specifications are subject to change without notice (26.10.99)