28
4.1 Protection
Overview
The protection functionality is designed for the following key applications:
•
Radial line recloser;
•
Ring line recloser:
▪
Normally closed,
▪
Normally open,
▪
The point of independent power producers’ connection to the grid;
•
Rezip recloser
– provides protection and reconfiguration in radial, ring and meshed networks where
conventional protection grading is impossible;
•
Standard sectionalizer
– provides automatic segregation of the faulty section basing on number of upstream
recloser operations;
•
Rezip sectionalizer
– allows overcoming the limit of the number of sectionalizers in series and minimize
upstream recloser operations to segregate the faulty section.
Protection device mode (Recloser or Sectionalizer) can be independently selected for each of four protection
group.
A complete list of protection elements is presented in the Table 14.
Table 14
– List of protection elements
Protection element
Short name
ANSI code
Bolted Fault
BF
Phase Overcurrent
OC
51/50/67
Earth Fault
EF
51N/50N/67N
Phase and Earth Overcurrent Reclosing
AR OC
79
Sensitive Earth Fault
SEF
51Ns/67Ns
Sensitive Earth Fault Reclosing
AR SEF
79
Neutral Admittance Protection
NAP
21YN
Neutral Admittance Protection Reclosing
AR NAP
79
Neutral Voltage Shift
NVS
59N
Voltage Unbalance
VU
47
Current Unbalance
CU
46
Undervoltage
UV
27
Undervoltage Reclosing
AR UV
79
Overvoltage
OV
59
Overvoltage Reclosing
AR OV
79
Underfrequency
UF
81U
Underfrequency Reclosing
AR UF
79
Overfrequency
OF
81O
Overfrequency Reclosing
AR OF
79
Voltage Reclosing Control
VRC
Autoreclosing Timeout
ART
Cold Load Pickup
CLP
Source Detector
SD
32
Automatic Backfeed Restoration
ABR
Close Condition Verifier
CCV
Synchronization Indicator
SI
25
Hot Line
HL
Fault Locator
FL
21FL
Loss of Supply
LS
Loss of Supply Autoreclosing
AR LS
Sectionalizing
SEC
Overcurrent Interruption Detection
OCID
Earth Fault Interruption Detection
EFID
Sensitive Earth Fault Interruption Detection
SEFID
Summary of Contents for Rec15
Page 1: ......
Page 5: ...1 Introduction...
Page 9: ...2 Technical Parameters...
Page 14: ...3 Product Description...
Page 26: ...26 Figure 25 Anti vandal housing...
Page 27: ...4 Functionality...
Page 56: ...5 Product Handling...
Page 69: ...6 Installation...
Page 81: ...7 Commissioning...
Page 84: ...8 Operation...
Page 99: ...99 Figure 76 Settings uploading wizard...
Page 100: ...9 Maintenance and Troubleshooting...
Page 114: ...114 Figure 90 Securing the trip hook shaft against rotation...
Page 115: ...10 Product Coding...
Page 122: ...11 Appendices...
Page 128: ...128 Appendix 4 Recloser Control Drawings Figure 99 Dimensions of RC5_4...
Page 133: ...133 Figure 106 Dimensions of standard OSM mounting kit arrangement for lateral installation...
Page 134: ...134 Figure 107 Dimensions of interface bracket...
Page 135: ...135 Figure 108 Dimensions of OSM mounting kit with M16 pole interface front installation...
Page 136: ...136 Figure 109 Dimensions of OSM mounting kit with M16 pole interface lateral installation...
Page 137: ...137 Figure 110 Dimensions of OSM mounting kit with M20 pole interface front installation...
Page 138: ...138 Figure 111 Dimensions of OSM mounting kit with M20 pole interface lateral installation...
Page 149: ...149 Figure 122 Dimensions of OSM substation mounting kit...
Page 152: ...152 Figure 125 Dimensions of RC mounting kit for through the pole installation...
Page 153: ...153 Figure 126 Dimensions of RC substation mounting kit...
Page 154: ...154 Figure 127 Dimensions of VT mounting kit One VT holder...
Page 163: ...163 Appendix 8 Connectors Drawings Figure 141 Dimensions of aerial connector...
Page 164: ...164 Figure 142 Dimensions of bird guards for aerial connector...
Page 165: ...165 Figure 143 Dimensions of two hole NEMA connector...
Page 166: ...166 Figure 144 Dimensions of bird guards for two hole NEMA connector...
Page 167: ...167 Figure 145 Dimensions of four hole NEMA connector...
Page 168: ...168 Figure 146 Dimensions of bird guards for four hole NEMA connector...
Page 169: ...169 Figure 147 Dimensions of Burndy NEMA connector...
Page 170: ...170 Appendix 9 Recloser Control Wiring Diagram Figure 148 RC5_4 wiring diagram...
Page 172: ......