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Areva Manuals
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MiCOM P127
Technical manual
Areva MiCOM P127 Technical Manual
Directional/non-directional relay
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Contents
Table of Contents
Bookmarks
Table of Contents
Section 1
Table of Contents
1 Introduction
2 Health and Safety
3 Symbols and External Labels on the Equipment
Symbols
Labels
4 Installing, Commissioning and Servicing
5 Decommissioning and Disposal
6 Equipment Which Includes Electromechanical Elements
7 Technical Specifications for Safety
Protective Fuse Rating
Protective Class
Installation Category
Environment
8 Ce Marking
9 Recognized and Listed Marks for North America
Section 2
1 General Considerations
Receipt of Relays
Electrostatic Discharge (ESD)
2 Handling of Electronic Equipment
3 Relay Mounting
4 Unpacking
5 Storage
6 Use of this Section
7 Introduction to the Micom Range
8 General on Micom
Micom P125/P126 & P127
9 Relay Description
Relay Overview
Front Panel Description
Relay Identification
Battery and Communication Port
Withdrawing Module from Case
Main Functions
10 Overwiew Directional Protection Functions
11 Energising the Relay
System Connections
Auxiliary Power Supply Connections
12 Menu Structure
P125 Menu Structure
P126 & P127 Menu Structure
Access to the Menu
Password Protection
Password Entry
13 Default Settings and Setting Range
Description Rear Terminal Block for P125
Description Rear Terminal Block for
15 Local Connection to a Pc
Configuration
16 Remote Connection
17 Wiring Diagrams for
P125 Wiring Diagram
P126 Wiring Diagram
P127 Wiring Diagram
18 Case Dimensions
P126 & P127 Case Dimension
P125 Case Dimension
19 Company Contact Information
Section 3
1 General Considerations
Receipt of Relays
Electrostatic Discharge (ESD)
2 Handling of Electronic Equipment
3 Relay Mounting
4 Unpacking
5 Storage
6 Case Dimensions
Micom P125/P126 & P127
Section 4
1 Introduction
2 Password
Password Protection
Password Entry
Changing the Password
Change of Setting Invalidation
Displays of Alarm & Warning Messages
Electrical Network Alarms
Relay Hardware or Software Warning Messages
3 General Characterisitcs
Analogue Inputs
4 Menu
Menu OP PARAMETERS
Additional OP PARAMETERS Menu Points for P126 & P127
Submenu General Options
Submenu Transfo. Ratio
Example: Setting LED 5 for P126
Submenu Logic Inputs Choice: Active High/Low (P125)
Submenu Logic Inputs Choice: Active High/Low (P126 & P127)
Submenu Output Relay 1 in Fail Safe Mode
Submenu Selecting Active Protection Group (P125, P126 & P127)
Menu MEASUREMENTS
Voltage Connections
Vpn (Three Phase-Neutral Connection)
2Vpn + Vr (Two Phase-Neutral Plus an Open Delta Connection)
Vpp + Vr (Two Phase-Phase Plus an Open Delta Connection)
Menu MEASUREMENTS for P125
MEASUREMENTS Menu Points for P126
Additional Measurements Menu Points for P127
Menu COMMUNICATION
Menu Modbus COMMUNICATION
Menu Courier COMMUNICATION
Menu DNP3.0 COMMUNICATION
P12Y/En FT/D32
User Guide
Micom
Menu PROTECTION
Submenu [67/50/51] Directional Three Phase Overcurrent (P127)
Submenu [67N/50N/51N] Directional Earth Overcurrent
Submenu [50/51] Three Phase Overcurrent (P126)
Submenu [32N] Earth Wattmetric Protection
Submenu [46] Negative Phase Sequence Overcurrent (P126 & P127)
Submenu [49] Thermal Replica Overload (P126 & P127)
Submenu [37] Undercurrent Protection (P126 & P127)
Submenu [59] Over-Voltage Protection (P127)
Submenu [27] Under-Voltage Protection (P127)
Submenu [59N] Earth Over-Voltage Protection
Submenu [79] AUTORECLOSE (P126 & P127)
Menu AUTOMAT. CTRL
Submenu Trip Commands
Submenu Latch Relays
Submenu Blocking Logic
Submenu Logic Select
Submenu Outputs Relays
Submenu Inputs
Setting Auxiliary Timers at the End of Submenu Inputs
Submenu Broken Conductor (P126 & P127)
Submenu Cold Load PU (P126 & P127)
Submenu Circuit Breaker Fail (P126 & P127)
Submenu Circuit Breaker Supervision (P126 & P127)
Submenu SOTF (Switch on to Fault) (P126 & P127)
Menu RECORDS (P126 & P127)
Submenu CB Monitoring (P126 & P127)
Submenu Disturb Record
5 Wiring
Auxiliary Power Supply
Current Measurement Inputs
Logic Inputs
Output Relays
Communication
RS485 Rear Communication Port
RS232 Front Communication Port
Section 5
1 Ratings
Power Supply
Frequency
Current Inputs
Voltage Inputs
Logic Inputs
Supply
Output Relay Characteristic
2 High Voltage Withstand
3 Electrical Environment
4 Environment
5 Deviation of Protection Elements
6 Deviation of Automation Functions Timers
7 Deviation of Measurements
8 Protection Setting Ranges
67/50/51] Directional/Non-Directional Phase Overcurrent (P127)
Synchronous Polarisation
Protection Setting Ranges (P127)
50/51] Phase Overcurrent Protection (P126)
Protection Setting Ranges (P126)
50N/51N] Dir./Non-Dir. Earth Fault Protection (P125, P126 & P127)
Protection Setting Ranges
Earth Wattmetric Protection
Functionality Mode
Protection Setting Ranges
Undercurrent Protection (P126 & P127)
Protection Setting Ranges
Negative Sequence Overcurrent Protection (P126 & P127)
Thermal Overload Protection (P126 & P127)
Protection Setting Ranges
Undervoltage Protection (P127)
Protection Setting Ranges (P127)
Overvoltage Protection (P127)
Protection Setting Ranges (P127)
Residual Overvoltage Protection
Protection Setting Ranges
Multishot Autoreclose Function (P126 & P127)
Multishot Autoreclose Settings
9 Automation Control Functions
Cold Load Pickup (P126 & P127)
Auxiliary Timers (P126 & P127)
Broken Conductor Detection (P126 & P127)
Broken Conductor Detection Setting Ranges
Circuit Breaker Failure (P126 & P127)
CB Fail Setting Ranges
Trip Circuit Supervision (P126 & P127)
Trip Circuit Supervision Setting Ranges
Circuit Breaker Control and Monitoring (P126 & P127)
Setting Ranges
SOTF/TOR Switch on to Fault / Trip on Reclose (P126 & P127)
AND Logic Equation (P126 & P127)
Timer Setting Ranges
10 Recording Functions (P126 & P127)
Event Records
Fault Records
Instantaneous Recorder
Disturbance Records
Triggers; Data; Setting Ranges
11 Communication
12 Curves
General
Inverse Time Curves
Reset Timer
Thermal Overload Curves
Section 6
1 Introduction
Protection of Underground and Overhead Lines
Micom Directional Relays
2 Current Protections & Automation Functions
67/50/51] Directional/Non Directional Three Phase Overcurrent Protection (P127)
67] Directional Overcurrent Protection
Description
Synchronous Polarisation
Setting Guidelines
Directional Three Phase Overcurrent Applications
50/51] Three Phase Overcurrent Protection (P126 - P127)
Instantaneous Function [50/51]
Three Phase Overcurrent Protection Applications
Directional Earth Fault Protection (P125, P126 & P127)
General Setting Guidelines
An Application of 67N in an Insulated Systems
Wattmetric (Pe) Characteristic
Application Considerations
Iecos Protection
Where Use Iecos and Where Use Pe
Thermal Overload Protection (P126 & P127)
Time Constant Characteristic
Mathematical Formula Applicable to Micom Relays
Setting Guidelines
Undercurrent Protection (P126 & P127)
Negative Sequence Overcurrent Protection (P126 & P127)
I2 Thresholds Setting Guidelines
3 Voltage Protections
Setting for the Voltage Connections
Voltage Measurement Displayed
Consideration on the Measurement Menu
Zero Sequence Overvoltage Protection (P125, P126 & P127)
27) Undervoltage Protection (P127)
Setting Guidelines
59) Overvoltage Protection (P127)
Setting Guidelines
4 Description and Setting Guide of the Autoreclose Function (P126 & P127)
Available Settings
Functionality
Activation
ARC Setting and Functionality
Re-Closer Lockout
Inputs Setting
Output Realys for the ARC (Output Relays Submenu)
Leds for the ARC (Led Submenu)
ARC Measurements
Autoreclose Setting Guidelines
Number of Shots
Dead Timer Setting
Fuse Application
5 Automatic Control Functions
Trip Commands
Latch Relays
Broken Conductor Detection (P126 & P127)
Setting Guidelines
Example Setting
Cold Load Pick-Up (P126 & P127)
Air Conditioning / Resistive Heating Loads
Motor Feeders
Earth Fault Protection Applied to Transformers
Auxiliary Timers (P125, P126 & P127)
Selective Scheme Logic (P126 & P127)
Blocking Logic Function (Blocked Directional/Non Directional Overcurrent Protection)
Circuit Breaker State Monitoring
Circuit Breaker Condition Monitoring (P126 & P127)
Circuit Breaker Condition Monitoring Features (P126 & P127)
Setting Guidelines
Circuit Breaker Failure (P126 & P127)
Circuit Breaker Failure Protection Mechanism
Breaker Fail Settings
Trip Circuit Supervision (P126 & P127)
Micom P126 & P127 Trip Circuit Supervision Mechanism
External Resistor R1 Calculation
Switch Onto Fault Protection & Trip on Reclose (SOTF/TOR) (P126 & P127)
General
SOTF/TOR Description
Local/Remote Conditioning (P125, P126 & P127)
Local/Remote Conditioning by Logical Input
Settings
AND Logic Functions (P126 & P127)
6 Records (P126 & P127)
Event Records
Fault Records
Instantaneous Recorder
Disturbance Records
7 Rolling and Peak Value Demands
Rolling Demand
Peak Value Demand
8 Setting Group Selection (P125, P126 & P127)
Setting Group Change by Digital Input
Priority
9 Measurements
Power and Energy Measurements (P127)
10 Logic Inputs and Logic Outputs
Logic Inputs
Logic Outputs
11 Maintenance Mode
12 Ct Requirements
Definite Time / IDMT Overcurrent & Earth Fault Protection
Instantaneous Overcurrent & Earth Fault Protection
Definite Time / IDMT Sensitive Earth Fault (SEF) Protection
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Quick Links
1
Installing, Commissioning and Servicing
2
P127 Wiring Diagram
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MiCOM
P125/P126/P127
Directional/Non-directional
Relay
Technical Guide
P12Y/EN T/E32
Table of
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Chapters
Section 1
7
Section 2
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Section 3
69
Section 4
81
Section 5
169
Section 6
199
Section 7
275
Section 8
313
Table of Contents
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