Read e-book online ABB handbook protection and control devices PDF

By ABB SACE

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For fault current values higher than 1600 A, the circuit-breaker trips instantaneously through magnetic protection. Introduction The following figures show the curves of the single protection functions available in the electronic releases. The setting ranges and resolution are referred to setting operations to be carried out locally. 2 x I1 A= 3s; B= 6s; C= 12s; D= 18s (@ 6 x I1) A= 3s; B= 6s; C= 12s; D= 18s (@ 6 x I1) for T4 In = 320 A and T5 In = 630 A → t1 = 12s. 5 – 2 – 4 – 6 – 8 – 10 – 12 – OFF) x In Here below the tolerances: I2 ± 10 % (T4-T5) PR221 ± 10 % (up to 2 x In) ± 20 % (over 2 x In) PR222 ± 10 % PR211 ± 10 % PR212 101 1 I3 ± 10 % (T4-T5) ± 20 % (T2) ± 10 % for T4 In = 320 A and T5 In = 630 A →I3 max = 10 x In Here below the tolerances: Tripping time: ≤ 25 ms ≤ 25 ms ± 20 % ≤ 25 ms PR111 ± 20 % 35 ms up to 3 x In 30 ms over 3 x In PR112 PR113 ± 10 % up to 4 x In ± 15 % over 4 x In ≤ 25 ms The given tolerances are valid only if the release is self-supplied in steady state condition with two-phase or three-phase power supply.

2 Trip curves 3 General characteristics 3 General characteristics Trip curve electronic releases PR113/P release – Other protection functions The following curves refer to the particular protection functions provided for PR113/P. 3 Limitation curves A circuit-breaker in which the opening of the contacts occurs after the passage of the peak of the short-circuit current, or in which the trip occurs with the natural passage to zero, allows the system components to be subjected to high stresses, of both thermal and dynamic type.

For fault current values higher than 1600 A, the circuit-breaker trips instantaneously through magnetic protection. Introduction The following figures show the curves of the single protection functions available in the electronic releases. The setting ranges and resolution are referred to setting operations to be carried out locally. 2 x I1 A= 3s; B= 6s; C= 12s; D= 18s (@ 6 x I1) A= 3s; B= 6s; C= 12s; D= 18s (@ 6 x I1) for T4 In = 320 A and T5 In = 630 A → t1 = 12s. 5 – 2 – 4 – 6 – 8 – 10 – 12 – OFF) x In Here below the tolerances: I2 ± 10 % (T4-T5) PR221 ± 10 % (up to 2 x In) ± 20 % (over 2 x In) PR222 ± 10 % PR211 ± 10 % PR212 101 1 I3 ± 10 % (T4-T5) ± 20 % (T2) ± 10 % for T4 In = 320 A and T5 In = 630 A →I3 max = 10 x In Here below the tolerances: Tripping time: ≤ 25 ms ≤ 25 ms ± 20 % ≤ 25 ms PR111 ± 20 % 35 ms up to 3 x In 30 ms over 3 x In PR112 PR113 ± 10 % up to 4 x In ± 15 % over 4 x In ≤ 25 ms The given tolerances are valid only if the release is self-supplied in steady state condition with two-phase or three-phase power supply.

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ABB handbook protection and control devices by ABB SACE


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