GE KVGC 202 - Page 8

K
VCG202/EN M/H11
Technical Manua
l
KVGC20
2
8.20
Mechanical environment 93
8.20.1 Vibration IEC 60255-21-1:1988 93
8.20.2 Shock and bump IEC 60255-21 2:1988 93
8.20.3 Seismic IEC 60255-21-3:1993 93
8.20.4 Mechanical durability 93
8.21 Model numbers 94
8.22 Frequency response 94
9. COMMISSIONING, PROBLEM SOLVING AND MAINTENANCE 96
9.1 Commissioning preliminaries 96
9.1.1 Quick guide to local menu control 96
9.1.2 Terminal allocation 96
9.1.3 Electrostatic discharge (ESD) 96
9.1.4 Inspection 96
9.1.5 Earthing 96
9.1.6 Main current transformers 96
9.1.7 Test block 97
9.1.8 Insulation 97
9.2 Commissioning test notes 97
9.2.1 Equipment required 97
9.3 Auxiliary supply tests 98
9.3.1 Auxiliary supply 98
9.3.1.1 Energisation from auxiliary voltage supply 98
9.3.1.2 Field voltage 98
9.4 Settings 98
9.4.1 Selective logic functions to be tested. 99
9.5 Measurement checks 99
9.5.1 Current measurement 99
9.5.2 Voltage measurement 99
9.6 Control functions 100
9.6.1 Regulated Voltage setting V
S
and Dead Band dV
S
100
9.6.2 Load shedding/boosting 100
9.6.3 Integrated timer 101
9.6.3.1 Initial time delay 101
9.6.3.2 Definite time delay 101
9.6.3.3 Inverse time delay 102
9.6.3.4 Inter-tap delay 103
9.6.4 Line drop compensation 103
9.6.4.1 Resistive load current compensation (Vr) 103
9.6.4.2 Reactive load current compensation (Vx) 104
9.6.4.3 Circulating current compensation (Vc) 105
9.6.4.4 Negative compensation 105
9.6.4.5 Positive compensation 105
9.6.5 Negative reactance control (alternative method to circulating current compensation) 106
9.7 Supervision and monitoring 107
9.7.1 Undervoltage detector (V<) 107
9.7.2 Overvoltage detector (V>) 107
9.7.3 Overcurrent Detector (IL) 108
9.7.4 Undervoltage blocking (V<<) 109
9.7.5 Circulating Current Detector (I
C
) 109
9.7.6 RunAway protection 110
9.7.7 Load Check 112
9.8 Problem solving 113