15 Frost-Protection Accessories Which transformer should be used? If you want to operate a water bowl with 80 watts of power (supplied), then a 100-watt transformer will suffice (item no. 222796). If you also want to connect a 24 V heating cable, simply add the current consumption (= wattage) of the cable. When selecting the transformer, plan for a power reserve of 15 % (factor 1.15). Please ensure you select the correct cable cross-section. If the cable cross-section selected is too small, it cannot transmit the full power and the water bowl system can freeze under certain circumstances despite heating. Selection of the required transformers: Calculation example for transformer: 1 x 300 watts (VA) transformer (item no. 222626) for: 2 x water bowl HP20 216 watts x 1.15 = 249 watts 246 watts < 300 watts 1 x 200 watts (VA) transformer (item no. 222797) for: 2 x water bowl H10 + 2 x heating cable 160 watts x 1.15 = 184 watts 184 watts < 200 watts Number Water Bowls / Heating Cables 3 Water Bowl HP20 24 Volt (item no. 222055) 3 x 73 watts = 216 watts 2 Water Bowl H10 24 Volt (item no. 222005) 2 x 50 watts = 100 watts 2 Frost Protection Heating Cable - 24 Volt (item no. 223581) 2 x 30 watts = 60 watts Total power: = 376 watts Calculate the total power required with power reserve: 376 watts x 1.15 (+ 15 %) = 433 watts + Transformer for trough heating • transforms the voltage from 230 volts to 24 volts • can be used for all frost-free waterers • Short circuit and overload protection through easily replaceable automotive fuse in the output circuit • the transformers are also secured against overheating thanks to an integrated temperature limiter (automatic reset after cool-down) • IP 65 (transformer) / IP 20 (connection) • Produced using vacuum casting: the best possible protection against moisture, mechanical and electronic loads Conventional car microfuses for safe operation of the installation Ref. no. Thickness € 222796 100 VA 1 222797 200 VA 1 222626 300 VA 1 222798 400 VA 1 Made in Germany
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