Page 42 - SACE Tmax XT - Technical Catalogue
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1/38             SACE TMAX XT LOW VOLTAGE MOLDED CASE CIRCUIT-BREAKERS



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          Characteristic curves


          Trip curves with electronic trip unit Ekip Dip









         XT7 - XT7 M Ekip Dip LS/I                            XT7 - XT7 M Ekip Dip LIG
         L-S functions                                        L-I functions
            t [s]                                               t [s]
          10 4                                                10 4
                      0.4...1                                              0.4...1
                    0.4  1                                              0.4   1
          10 3                1...10                          10 3
                        1            10
                                                                             1           10
          10 2                                                10 2


          10                                                   10
                   I 2 t ON
                                                10  2                                                10 2
           1                                                   1
                                                                                  1...10
          10 -1                                               10 -1
                   I 2 t OFF

          10 -2                                               10 -2

          10 -3                                               10 -3
            10 -1       1           10  10 -1  1  10  10 2      10 -1        1           10  10 -1  1  10  10 2
                                    x In        I [kA]                                  x In        I [kA]





         XT7 - XT7 M Ekip Dip LIG                             XT7 - XT7 M Ekip Dip LSI
         G function                                           L-S-I functions

            t [s]                                               t [s]
          10 4                                                10 4
                                                                           0.4...1
                                                                        0.4   1
          10 3                                                10 3               0.6...10
                                                                          0.6            10
                                                                               1.5         15
                   0.2...1
               0.2      1
          10 2                                                10 2

          10                                                   10
                                                                      I 2 t ON
                                                                                                     10 2
           1                                                   1
                                     Inhibited for I>4 In
          10 -1                                               10 -1
                                                                     I 2 t OFF
                                                                                    1.5...15
          10 -2                                               10 -2

          10 -3                                               10 -3
            10 -1       1           10          10 2            10 -1        1           10  10 -1  1  10  10  2
                                                x In                                    x In        I [kA]
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