specifications are subject to change without notice (26.10.99) 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 3 40 x 10 6 operations electrical life 3 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 (26.10.99) 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 t < 200 ms, worst case reaction time may be up to 5 x t 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
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