Star/delta relay type RT18 Timing relay for star-delta switches Automatic start 4 time ranges from 0,4 sec. to 10 min. Time adjustment on built-in potentiometer 1-pole relay output with neutral centre position 100 msec. fixed neutral time Phase-neutral or phase-phase supply voltage Made in accordance with the and EMC regulations C-mac® time relay type RT18 is particularly made for the control of star-delta contactors. When the supply voltage is connected, the relay activates in position 1-4, and the time period starts. At the end of the set delay, the relay switches to neutral centre position for approx. 100 msec. Then it switches to position 1-3 and stays in this position, until the supply voltage is interrupted. Technical data: Supply voltage Power consumption: Operation temp.: Humidity: Indications: Green LED: Red LED: Time adjustment: Accuracy, scale: Repeatability: Reset of time and/or relay: Max. load, relay: 24 VAC/DC 127 VAC / 220 VAC 230 VAC / 400 VAC 240 VAC / 415 VAC max. 2 W -20°C til +60°C 0 - 90% RH, non-condensing Relay, position 1-4 Relay, position 1-3 2,5 - 100 % of the range 5 %. 0,1 % Supply voltage interruption for more than 0,2 sec. 1-pole 8 A - 250 VAC 2-pole: 5 A - 250 VAC, ohmic load EMC og safety regulations. Emmision: EN 50 081 - 1 Immunity: EN 50 082 - 2 Safety: EN 60 730 Approvals: The units are produced in accordance with the CE og low voltage regulations. Note: At 24 V AC/DC supply, pin 9 is not connected. (pin 2 is +) Functional diagram: supply relay, 1-4 Ordering guide: Supply Type number xxx = time ranges see table on previous page Ordering example: RT18-2-1-230/400-60S Mechanical dimensions.: see pagee 9-2