Table Of Contents - Siemens Solkor 7PG2113 Technical Manual

Contents
Section 1: Introduction ............................................................................................................................................. 6
1.1 General Safety Precautions .................................................................................................................... 6
1.1.1 Current Transformer Circuits..................................................................................................... 6
1.1.2 External Resistors..................................................................................................................... 6
1.1.3 Front Cover ............................................................................................................................... 6
Section 2: Hardware Description............................................................................................................................ 15
2.1 General ................................................................................................................................................. 15
2.2 Case...................................................................................................................................................... 16
2.3 Front Cover ........................................................................................................................................... 17
2.4 Power Supply Unit (PSU)...................................................................................................................... 17
2.5 Operator Interface/ Fascia .................................................................................................................... 17
2.6 Current Inputs ....................................................................................................................................... 21
2.7 Voltage Inputs ....................................................................................................................................... 21
2.8 Binary Inputs ......................................................................................................................................... 22
2.9 Binary Outputs (Output Relays) ............................................................................................................ 22
2.10 Virtual Input/Outputs ............................................................................................................................. 24
2.11 Self Monitoring ...................................................................................................................................... 24
2.11.1 Protection Healthy/Defective................................................................................................... 24
Section 3: Current Differential Protection Function ................................................................................................ 25
3.1 Description ............................................................................................................................................ 25
3.2 Operation .............................................................................................................................................. 27
3.3 Theory of Summation Transformer ....................................................................................................... 34
Section 4: Numeric Protection Module Functions .................................................................................................. 35
4.1 Current Protection: Phase Overcurrent (67, 51, 50).............................................................................. 35
4.1.1 Directional Control of Overcurrent Protection (67) - 7PG2114/6 ............................................ 35
4.1.2 Instantaneous Overcurrent Protection (50) ............................................................................. 37
4.1.3 Time Delayed Overcurrent Protection (51).............................................................................. 38
4.1.4 Current Protection: Voltage Controlled Overcurrent (51V) - 7PG2114/6 ................................ 40
4.2 Current Protection: Derived Earth Fault (67N, 51N, 50N) ..................................................................... 41
4.2.1 Directional Control of Derived Earth Fault Protection (67N) - 7PG2114/6.............................. 41
4.2.2 Instantaneous Derived Earth Fault Protection (50N)............................................................... 42
4.2.3 Time Delayed Derived Earth Fault Protection (51N) ............................................................... 43
4.3 Current Protection: Measured Earth Fault (67G, 51G, 50G) ................................................................. 45
4.3.1 Directional Control of Measured Earth Fault Protection (67G) - 7PG2114/6 .......................... 45
4.3.2 Instantaneous Measured Earth Fault Protection (50G)........................................................... 46
4.3.3 Time Delayed Measured Earth Fault Protection (51G) ........................................................... 47
4.4 Current Protection: High Impedance Restricted Earth Fault - (64H) ..................................................... 49
4.5 Current Protection: Cold Load (51c) ..................................................................................................... 50
4.6 Current Protection: Negative Phase Sequence Overcurrent - (46NPS) ................................................ 51
4.7 Current Protection: Under-Current (37)................................................................................................. 52
4.7.1 Current Protection: Thermal Overload (49) ............................................................................. 53
4.8 Voltage Protection: Phase Under/Over Voltage (27/59) - 7PG2114/6.................................................. 55
4.9 Voltage Protection: Negative Phase Sequence Overvoltage (47) - 7PG2114/6................................... 56
4.10 Voltage Protection: Neutral Overvoltage (59N) - 7PG2114/6 ............................................................... 57
Section 5: Control & Logic Functions ..................................................................................................................... 58
5.1 Auto-Reclose (79) Optional Function .................................................................................................... 58
5.1.1 Overview ................................................................................................................................. 58
5.1.2 Auto Reclose sequences ........................................................................................................ 60
5.1.3 Autoreclose Prot'n Menu......................................................................................................... 61
5.1.4 Autoreclose Config Menu........................................................................................................ 61
5.1.5 P/F Shots sub-menu ............................................................................................................... 63
5.1.6 E/F Shots sub-menu ............................................................................................................... 63
5.1.7 SEF Shots sub-menu .............................................................................................................. 63
5.1.8 Extern Shots sub-menu........................................................................................................... 64
©2010 Siemens Protection Devices Limited
7PG2113/4/5/6 Solkor Description of Operation
Chapter 1 Page 2 of 80