ABB REL 505-C1 2.3 Series Installation And Commissioning Manual page 5

Current reversal and weak end infeed logic for
distance protection (ZCAL) .............................................................. 60
Current reversal logic.................................................................... 60
Weak end infeed logic .................................................................. 61
Completing the test....................................................................... 62
Current reversal and weak end infeed logic for residual
overcurrent protection (EFCA) ......................................................... 63
Testing the current reversal logic.................................................. 63
Testing the weak-end-infeed logic ................................................ 63
Completing the test....................................................................... 65
Definite and inverse time-delayed residual
overcurrent protection (TEF) ............................................................. 66
Checking the operate values of the
current measuring elements
Event function (EV)............................................................................ 70
Event recorder ................................................................................... 71
Fuse failure supervision (FUSE)........................................................ 72
Checking that the binary inputs and outputs
operate as expected
Measuring the operate value for the
negative sequence function
Measuring the operate value for the zero sequence function....... 74
Checking the operation of the du/dt, di/dt based function ............ 75
Completing the test....................................................................... 76
High speed binary output logic (HSBO)............................................. 77
HSBO- trip from communication logic........................................... 77
HSBO- trip from the high-speed function (HS) ............................. 79
HSBO- trip from the distance protection zone 1 function (ZM1) ... 80
Completing the test....................................................................... 81
Instantaneous overcurrent protection (IOC) ...................................... 82
Measuring the operate limit of set values ..................................... 82
Completing the test....................................................................... 83
Monitoring of AC analogue measurements ....................................... 84
Monitoring of DC analogue measurements ....................................... 85
Setting lockout (HMI) ......................................................................... 87
Scheme communication logic for distance protection
functions (ZCOM) ............................................................................ 88
Testing permissive underreach..................................................... 88
Testing permissive overreach....................................................... 89
Testing blocking scheme .............................................................. 89
Checking of unblocking logic ........................................................ 90
Completing the test....................................................................... 90
Scheme communication logic for residual
overcurrent protection (EFC) ........................................................... 91
Testing the directional comparison logic function ......................... 91
Completing the test....................................................................... 92
Setting group selector (GRP)............................................................. 93
Time delayed overcurrent protection (TOC) ...................................... 94
Measuring the operate limit of set values ..................................... 94
Completing the test....................................................................... 95
Trip logic (TR) .................................................................................... 96
3ph operating mode...................................................................... 96
1ph/3ph operating mode............................................................... 96
Contents
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.............................................................. 72
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