ZIV 7IRD-A - Page 45

To Next Page

To Previous Page

Chapter 6. Description of Operation of Protection Subsystem

6-5

M7IRDA2003I

7IRD-A/J/M: Distribution Protection & Control Terminal

Figure 6.2 Very Inverse Time / Current Characteristic.

5.13





x Index

pickup

measured



Main Page

Table of Contents3
Description7
General Overview8
Protection Subsystem Functions9
Non-Directional Overcurrent Protection 3-Phase and Ground9
Recloser (7IRD-A/J Models)9
Breaker Failure Protection9
Open Phase Protection9
Residual Current Detection (Neutral Unbalance Unit)9
Control Subsystem Functions10
Local Control and Status Indication of All Bay Elements10
Local Recloser Control (7IRD-A/J Models)10
Measurement Presentation10
Presentation of Local Alarms as Conventional Alarms10
Indication of Digital Inputs / Outputs10
Indication of Auxiliary Inputs / Outputs States and Protection Leds10
Additional Functions11
Model Selection13
Technical Data15
Power Supply Voltage16
Protection Subsystem16
Power Supply Burden16
Current Analog Inputs16
Measurement Accuracy16
Accuracy of Time Measurement16
Repeatability17
Transient Overreach17
Status Contact Inputs17
Trip and Close Outputs18
Auxiliary Contact Outputs18
Control Subsystem19
Power Supply Burden19
Current Analog Inputs (Measurement Circuit Board)19
Voltage Inputs (Measurement Circuit Board)19
Measurement Accuracy (Measurement Circuit Board)19
Accuracy of Time Measurement19
Status Contact Inputs20
Double Contact Outputs (SD1 and SD2)20
Simple Contact Outputs20
Transducer Input/Outputs20
Communications Link21
Standards and Type Test23
Insulation24
Electromagnetic Compatibility24
Environmental Test25
Power Supply25
Mechanical Test25
Physical Architecture27
General28
Protection and Control Interconnection29
Dimensions29
Connection Elements30
Terminal Connectors and Connector Blocks30
Removing of Printed Circuit Boards (Non Self-Shorting)30
Settings31
Protection Subsystem Settings32
Configuration Settings32
General Settings32
Protection Settings33
Recloser Settings (7IRD-A/J Models)34
Logic Settings36
Breaker Monitoring Settings37
Metering History Log37
Oscillographic Recording (Optional)38
Control Subsystem Settings39
Configuration Settings39
General Settings39
Time Settings40
Logic Settings40
Analogic Settings40
Description of Operation of Protection Subsystem41
Overcurrent Elements43
Time Elements43
Time/ Current Characteristics44
Instantaneous Elements47
Overcurrent Units Block Diagrams47
Torque Control (Pickup Blocking Enable)48
Trip Blocking and Time Delay Disable49
Breaker Failure49
Open Phase Element50
Residual Current Element51
General Settings52
Recloser (7IRD-A/J Models)53
Reclose Sequence53
Recloser Lockout57
Manual Close57
Manual and External Blocking58
Definite Trip59
Recloser Not in Service59
Reclose Counter59
Recloser and Trip Control Masks59
Logic61
Trip Seal-In61
Breaker Open and Breaker Close Failure Time61
Manual Closing through Recloser (7IRD-A/J Models)61
Trip and Close Coil Circuit Supervision62
Trip Coil Circuit63
Close Coil Circuit63
Trip/Close Coil Circuit Supervision Input Programming64
Trip/Close Output Supervision64
Breaker Monitoring65
Excessive Number of Trips65
Change Settings Group66
Event Record67
Fault Reports72
M7Irda2003I72
Metering History Log73
Oscillographic Register (Optional)74
Inputs, Outputs and LED Targets76
Inputs76
Auxiliary Outputs and Trip Contact Outputs78
LED Targets83
Communications84
Communications Settings84
Communications Types84
Communication with the Unit84
Alarm Codes85
Description of Operation of the Control Subsystem87
Operational Characteristics88
Control Unit89
Elements of the Control Subsystem92
Inputting Data to the Control Unit93
Inputs through Communications93
Inputs from the Protection Subsystem94
Physical Inputs94
HMI Inputs (Control HMI)95
Outputting Data from the Control Unit95
Outputs through Communications95
Signals Sent to the Protection Subsystem95
Physical Outputs96
HMI Outputs (Control HMI)96
Alphanumeric Keypad and Display97
Alphanumeric Display and Keypad98
Keys, Functions and Operation Modes99
Access to Functions Using Key F2102
Last Trip Indication and Recloser Status102
Screen Sequences Using F2103
Function Access Using the Keypad105
Control Function Access118
Local Interface: Graphic Display121
General122
Symbols Associated with the Graphic Display123
Accessing the Information126
Alarm Panel127
Information about the State of Inputs/Outputs and Active Leds128
Information about the Indication of Measurements128
Date and Time Information129
Control Function Operations130
General Procedure for Command Execution130
Procedure for Opening/Closing Breakers and Disconnecting Switches131
Procedure for Placing a Breaker in Discharge132
Procedure for Operating on Logic Devices133
Procedure for Managing Alarms133
10. Receiving Tests135
General136
Accuracy136
Preliminary Inspection137
Isolation Test137
Power Supply Test137
Protection Subsystem Reception Tests138
Metering Tests138
Phase and Ground Current Test138
Open Phase Test140
Residual Current Test140
Breaker Failure Test140
Recloser Test (7IRD-A/J Models)141
Trip/Close Coil Circuit Supervision Input Test142
Control Subsystem Receiving Tests142
Test Configuration142
Digital Inputs Test143
Digital Outputs and Leds Test144
Metering Test144
Communication Test145
Installation146
Location146
Connection146
PROCOME 3.0 Communications Protocol148
Settings148
Configuration Settings148
Logic Settings148
Description of Operation149
General Settings149
Logic149
Event Records149
Fault Report150
Inputs150
Communicating with the Unit150
Alphanumeric Keypad and Display151
Configuration151
Settings152
Accessing the Information152
DNP 3.0 Communications Protocol153
Physical Architecture154
Settings154
Description of Operation155
DNP 3.0 Protocol155
Settings155
Communications160
B.3.2.A Communication with the Equipment160
Alphanumeric Keypad and Display160
Change Settings160
DNP3.0 Protocol160
Information Access161
Schemes and Drawings163
List of Illustrations and Tables175
List of Figures176
List of Tables178

ZIV 7IRD-A - Page 45

Table of Contents