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00 In prevention at 8 In 1SDC210003F0004 10-2 10-3 10-1 1 10 102 x In Note: For PR223DS and PR223EF the electronic settings only are available. 84 I2t OFF 10-1 10-1 ABB SACE - Protection and control devices 10-2 10-3 10-1 1 10 102 I [kA] Note: The dotted curve for functional corresponds to the maximum delay (t1) wich can be set at 6 x I1, in the case where 320A CTS are used for T4 and 630A for T5. For all the CT sizes the maximum delay t1 is equal to 18s, except for 320 A CT (T4) and 630 A (T5) where t1=12s.

2 Trip curves 3 General characteristics 3 General characteristics Trip curve thermomagnetic release T4 250 MA Example of thermomagnetic release setting Consider a circuit-breaker type T1 160 In 160 and select, using the trimmer for thermal regulation, the current threshold, for example at 144 A; the magnetic trip threshold, fixed at 10·ln, is equal to 1600 A. Note that, according to the conditions under which the overload occurs, that is either with the circuit-breaker at full working temperature or not, the trip of the thermal release varies considerably.

84 I2t OFF 10-1 10-1 ABB SACE - Protection and control devices 10-2 10-3 10-1 1 10 102 I [kA] Note: The dotted curve for functional corresponds to the maximum delay (t1) wich can be set at 6 x I1, in the case where 320A CTS are used for T4 and 630A for T5. For all the CT sizes the maximum delay t1 is equal to 18s, except for 320 A CT (T4) and 630 A (T5) where t1=12s. 8 x In, I3 max = 9,5 x In Only the electronic settings are available. 12 12 I2t ON 10 10 102 102 1 1 T4 T5 400 I2t OFF 10-1 10-1 T5 630 T7 S,H,L 10-2 10-2 T6 630 T7 V T6 800 T6 1000 10-3 10-3 10-1 1 10 1 x In 2 10 I [kA] 10-1 1 10 10 x In 102 I [kA] Note: For all the CT sizes the maximum delay t1 is equal to 18s, except for 320 A CT (T4) and 630 A (T5) where t1=12s.

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