SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
35
Functions 2
This chapter describes the individual functions of the SIPROTEC
4 device 7UM62. It shows the setting possi-
bilities for each function in maximum configuration. Guidelines for establishing setting values and, where re-
quired, formulae are given.
Based on the following information, it can also be determined which of the provided functions should be used.
2.1 Introduction, Reference Power System 37
2.2 Device 39
2.3 Ethernet EN100 Modul 42
2.4 Functional Scope 43
2.5 Power System Data 1 53
2.6 Change Group 62
2.7 Power System Data 2 63
2.8 Definite-Time Overcurrent Protection (I>, ANSI 50/51) with Undervoltage Seal-In 65
2.9 Definite-Time Overcurrent Protection (I>>, ANSI 50, 51, 67) with Direction Detection 69
2.10 Inverse-Time Overcurrent Protection (ANSI 51V) 75
2.11 Thermal Overload Protection (ANSI 49) 81
2.12 Unbalanced Load (Negative Sequence) Protection (ANSI 46) 91
2.13 Startup Overcurrent Protection (ANSI 51) 98
2.14 Differential Protection and Its Protected Objects 102
2.15 Earth Current Differential Protection (ANSI 87GN,TN) 128
2.16 Underexcitation (Loss-of-Field) Protection (ANSI 40) 136
2.17 Reverse Power Protection (ANSI 32R) 145
2.18 Forward Active Power Supervision (ANSI 32F) 149
2.19 Impedance Protection (ANSI 21) 152
2.20 Out-of-Step Protection (ANSI 78) 165
2.21 Undervoltage Protection (ANSI 27) 175
2.22 Overvoltage Protection (ANSI 59) 178
2.23 Frequency Protection (ANSI 81) 181
2.24 Overexcitation (Volt/Hertz) Protection (ANSI 24) 185
2.25 Inverse-Time Undervoltage Protection (ANSI 27) 190
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