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GE C70 User Manual

GE C70
702 pages
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GE
Grid Solutions
Instruction Manual
Product version: 7.6x
GE publication code: 1601-9015-AF2 (GEK-130995A)
C70
Capacitor Bank Protection
and Control System
1601-9015-AF2
IISO 9001
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52TL
IND.CONT. EQ.
E83849

Table of Contents

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GE C70 Specifications

General IconGeneral
Frequency50/60 Hz
CommunicationEthernet
Protection FunctionsOvercurrent
InputsAnalog, Digital
OutputsRelay
Operating Temperature-40°C to +70°C

Summary

C70 Capacitor Bank Protection and Control System

Instruction Manual

Provides comprehensive guidance on the operation, installation, and maintenance of the C70 Capacitor Bank Protection and Control System.

1 Introduction

1.1 Safety symbols and definitions

Defines safety indicators to prevent injury, equipment damage, or downtime.

1.1.1 General cautions and warnings

Outlines general safety precautions and warnings applicable to the device and its connections.

1.2 For further assistance

Provides contact information for product support and assistance.

2 Product description

2.1 Product description

Describes the C70 Capacitor Bank Protection and Control System as a microprocessor-based relay for capacitor banks.

2.2 Security

Details the security features available, including password security and CyberSentry.

2.3 Order codes

Lists applicable product options and order codes for various configurations and modules.

2.3.3 Replacement modules

Explains how to order replacement modules for the C70 relay.

2.5 Specifications

Lists the technical specifications of the C70 relay, subject to change without notice.

2.5.1 Protection elements

Details the operating times and characteristics of the protection elements within the relay.

2.5.2 User-programmable elements

Describes elements that can be programmed by the user, such as FlexLogic, FlexCurves, and FlexStates.

2.5.3 Monitoring

Explains how to monitor device status, including oscillography and event records.

2.5.4 Metering

Details the metering functions of the C70, including current, voltage, power, and frequency measurements.

2.5.5 Inputs

Lists and describes the various input types supported by the C70, including contact, DCmA, and RTD inputs.

2.5.6 Power supply

Provides specifications for the low and high range power supplies used by the C70.

2.5.7 Outputs

Details the specifications for different types of contact outputs, including Form-A, Latching, and solid-state relays.

2.5.8 Communications

Outlines the communication capabilities of the C70, including IEC 61850, RS232, RS485, and Ethernet interfaces.

2.5.9 Inter-relay communications

Describes the specifications for inter-relay communication interfaces, including fiber optic and twisted-pair options.

2.5.10 CyberSentry security

Explains the CyberSentry security feature, its options, and how it provides advanced security services.

2.5.11 Graphical front panel

Describes the features and capabilities of the graphical front panel.

2.5.12 Environmental

Lists the environmental operating conditions for the C70, including ambient temperature, humidity, and altitude.

2.5.13 Type tests

Lists the type tests performed on the C70 to ensure compliance with various standards.

2.5.14 Production tests

Describes the production tests conducted on the C70, including thermal tests and environmental tests.

2.5.15 Approvals

Lists the approvals and compliance directives applicable to the C70.

2.5.16 Maintenance

Provides general maintenance guidelines for the C70, including mounting and cleaning.

3 Installation

3.1 Unpack and inspect

Outlines the procedure for unpacking and inspecting the C70 relay unit and its delivered items.

3.2 Panel cutouts

Details the panel cutout requirements for mounting the relay, excluding HardFiber Brick.

3.2.1 Horizontal units

Describes the dimensions and mounting details for the 19-inch rack horizontal mount unit.

3.2.2 Vertical units

Describes the dimensions and mounting details for the reduced-size vertical mount unit.

3.2.3 Rear terminal layout

Illustrates the layout of the rear terminals and describes the convention for terminal number assignments.

3.3 Wiring

Provides guidance on wiring the C70 relay, including typical wiring diagrams.

3.3.1 Typical wiring

Illustrates a typical wiring diagram for the C70 relay, showing connections for various modules.

3.3.2 Dielectric strength

Explains the dielectric strength of UR-series module hardware and lists test voltages.

3.3.3 Control power

Details the connection requirements for control power to the relay, including voltage ranges and wiring recommendations.

3.3.4 CT/VT modules

Describes the connection and function of Current Transformer (CT) and Voltage Transformer (VT) modules.

3.3.5 Process bus modules

Explains the HardFiber Process Bus System interface and its benefits for communication.

3.3.6 Contact inputs and outputs

Details the terminal connections, module types, and contact arrangements for contact inputs and outputs.

3.3.6.1 Contact inputs

Explains the operation of dry and wet contact inputs, including voltage thresholds and debounce time.

3.3.6.2 General application considerations

Discusses general considerations for contact inputs, including issues with high impedance and false operations.

3.3.7 Transducer inputs and outputs

Describes how to receive signals from external transducers and convert them into a digital format.

3.3.8 RS232 port

Explains the use of the nine-pin RS232 serial port for programming and monitoring the relay.

3.3.9 CPU communication ports

Details the rear RS485 communication port on the CPU module.

3.3.9.1 Overview

Provides an overview of the CPU module's communication ports and their functions.

3.3.9.2 RS485 port

Explains RS485 data transmission, recommendations for wire usage, and potential issues.

3.4 Direct input and output communications

Describes the direct inputs and outputs feature and its use for direct messaging between UR devices.

3.4.1 Description

Describes the direct inputs and outputs feature and its use for direct messaging between UR devices.

3.4.2 Fiber: LED and ELED transmitters

Shows the configuration for fiber optic modules.

3.4.3 G.703 interface

Describes the G.703 interface standard for data and voice signal transmission.

3.4.3.1 Description

Explains the G.703 co-directional interface configuration.

3.4.4 RS422 interface

Describes the RS422 inter-relay communications modules, including single-channel and dual-channel options.

3.4.4.1 Description

Details the RS422 interface specifications, including recommended cable and shield termination.

3.4.4.2 Two-channel application via multiplexers

Explains how to achieve two-channel applications using multiplexers with RS422 interface.

3.4.5 IEEE C37.94 interface

Describes the IEEE C37.94 standard interface for teleprotection equipment and digital multiplexers.

3.5 Activate relay

Explains how to activate the relay from the factory default "Not Programmed" state to the "Programmed" state.

3.6 Install software

Guides the user through installing the EnerVista UR Setup software.

3.6.1 EnerVista communication overview

Explains how the EnerVista UR Setup software communicates with the relay via different ports.

3.7 Add device to software

Details the procedures for adding devices to the EnerVista UR Setup software for serial, Ethernet, or modem connections.

3.7.1 Set IP address in UR

Explains how to configure the IP and subnet addresses for Ethernet communication with the UR device.

3.7.2 Configure serial connection

Explains how to configure serial connections using either the front RS232 port or the rear RS485 terminals.

3.7.3 Configure Ethernet connection

Guides the user through configuring an Ethernet connection to the C70 device via the EnerVista UR Setup software.

3.7.5 Automatic discovery of UR devices

Describes how the EnerVista UR Setup software can automatically discover UR devices on an Ethernet network.

3.8 Connect to the C70

Outlines the four ways to connect to the C70 device.

3.8.1 Connect to the C70 in EnerVista

Provides information on using the EnerVista software to connect to the C70 relay.

3.8.1.1 Quick action hot links

Describes the quick action buttons in EnerVista UR Setup software that provide instant access to several functions.

3.8.2 Use Quick Connect via front RS232 port

Explains how to use the Quick Connect feature via the front panel RS232 port for connecting to the UR device.

3.8.3 Use Quick Connect via front USB port

Explains how to use the Quick Connect feature via the front panel USB port for connecting to the UR device.

3.8.4 Use Quick Connect via a rear Ethernet port

Explains how to use the Quick Connect feature via a rear Ethernet port for connecting to a UR device.

3.9 Set up CyberSentry and change default password

Guides the user through setting up CyberSentry security and changing the default password.

3.10 Import settings

Explains how to import settings files (.URS, .IID, .CID) into the EnerVista software.

3.11 Connect to D400 gateway

Describes how to connect to a D400 Substation Gateway for data collection from UR devices.

3.11.1 Oscillography files

Explains where oscillography files are stored and their format.

3.11.2 Event records

Explains where event records are stored and their format.

3.11.3 Log files

Explains where log files are stored and their format.

3.11.4 Setting files

Describes configuration/settings files in IEC 61850 SCL/IID format.

4 Interfaces

4.1 EnerVista software interface

Explains the EnerVista UR Setup software interface for configuring, monitoring, and maintaining relays.

4.1.1 Introduction

Introduces the EnerVista UR Setup software and its capabilities for relay management.

4.1.2 Settings files

Describes the three ways the EnerVista software supports handling changes to relay settings.

4.1.3 Event viewing

Explains how to view and analyze event data from the event recorder and oscillography.

4.1.4 File support

Details the file support capabilities within the EnerVista software, including execution and drag-and-drop functionality.

4.1.5 EnerVista main window

Outlines the components of the EnerVista UR Setup software main window.

4.1.6 Protection summary window

Describes the Protection Summary as a graphical user interface for managing protection elements.

4.1.7 Settings templates

Explains how settings file templates simplify configuration and commissioning of multiple relays.

4.1.7.1 Enable the settings template

Guides on how to enable the settings file template feature in offline mode.

4.1.7.2 Edit the settings template

Explains how to specify which settings are available for viewing and modification within the settings template.

4.1.7.3 Add password protection to a template

Provides instructions on how to add password protection to a settings file template for enhanced security.

4.1.7.4 View the settings template

Explains how to view the settings template on the online device or settings file.

4.1.7.5 Remove the settings template

Outlines the procedure for removing a settings template.

4.1.8 Secure and lock FlexLogic equations

Explains how to secure FlexLogic equations to prevent unauthorized viewing or modification.

4.1.8.1 Lock FlexLogic equations

Guides on how to lock individual entries within FlexLogic equations.

4.1.8.2 Lock FlexLogic equations to the serial number

Describes how to lock FlexLogic equations to a specific serial number for enhanced security.

4.1.9 Settings file traceability

Explains the traceability feature for settings files, allowing determination of changes since installation.

4.1.9.1 Settings file traceability information

Details where serial number and file transfer date are saved for traceability.

4.1.9.2 Online device traceability information

Explains how to access traceability data for an online device through actual values.

4.1.9.3 Additional traceability rules

Outlines additional rules that apply to the traceability feature.

4.2 Front panel interface

Explains the use of the enhanced, standard, and graphical front panels.

4.2.1 Front panel

Describes the components and features of the front panel.

4.2.1.1 Enhanced front panel

Details the components of the enhanced front panel, including LEDs, ports, and keypad.

4.2.1.2 Standard front panel

Describes the components of the standard front panel, including LEDs, ports, keypad, and dust cover.

4.2.1.3 Graphical front panel

Describes the graphical front panel, including its display, ports, and navigation keys.

4.2.2 Front panel display

Explains how messages are displayed on the front panel's LCD and how they are managed.

4.2.2.1 Enhanced and standard front panels

Details how messages display on the LCD for enhanced and standard front panels, including tilde symbol usage.

4.2.2.2 Graphical front panel

Describes the graphical front panel's LCD, header, and footer content, and how it displays data.

4.2.3 Front panel navigation keys

Explains the use of navigation keys on the front panel for accessing menus and settings.

4.2.3.1 Enhanced and standard front panels

Details the navigation keys and their functions on enhanced and standard front panels.

4.2.3.2 Graphical front panel

Explains the navigation keys and pushbuttons for the graphical front panel.

4.2.4 LED indicators

Explains the function of the LED indicators on the front panel.

4.2.4.1 Enhanced front panel

Details the LED indicators on the enhanced front panel, including status and user-programmable LEDs.

4.2.5 Front panel labelling

Outlines the procedure for creating custom LED and pushbutton labels for the front panel.

4.2.5.1 Enhanced front panel

Guides on creating custom LED and pushbutton labels for the enhanced front panel.

4.2.5.2 Standard front panel

Guides on creating custom LED and pushbutton labels for the standard front panel.

4.2.5.3 Graphical front panel

Explains how to create custom LED and pushbutton labels for the graphical front panel.

4.2.6 Menu navigation

Explains how to navigate the menu hierarchy using the front panel keys.

4.2.6.1 Enhanced and standard front panels

Details menu navigation on enhanced and standard front panels using scroll bars and arrow keys.

4.2.6.2 Graphical front panel

Explains menu navigation on the graphical front panel using Home, Tab, and arrow pushbuttons.

4.2.7 Change settings

Explains how to change settings, including numerical data entry and enumeration data.

4.2.7.1 Enhanced and standard front panels

Details changing numerical and alphanumeric settings using the front panel keypad.

4.2.7.2 Graphical front panel

Explains how to change settings on the graphical front panel, including numerical data and alphanumeric text entry.

4.2.8 View actual values

Explains how to view actual values, including metering data, phasor diagrams, and status indicators.

4.2.8.1 Graphical front panel

Describes viewing actual values and phasor diagrams on the graphical front panel.

4.2.9 Breaker control

Explains how the C70 interfaces with circuit breakers for monitoring and control.

4.2.9.1 Control mode selection and monitoring

Details the selection of breaker operating modes (3-pole or 1-pole) and monitoring of breaker status.

4.2.9.2 Front panel (user key) control

Explains how to control breakers using the front panel keypad after a command password.

4.2.9.3 Control of two breakers

Provides an example of controlling two breakers using the relay's keys.

4.2.9.4 Control of one breaker

Explains the procedure for controlling a single breaker.

4.2.10 Change passwords

Provides information on setting and changing passwords for local and remote connections.

4.3 Logic diagrams

Explains the purpose and overview of logic diagrams used in the manual.

4.4 FlexLogic design using Engineer

Introduces the integration of EnerVista Viewpoint Engineer software for creating and modifying FlexLogic.

4.4.1 Design logic

Explains how to create FlexLogic with block diagrams and outlines the development procedures.

4.4.1.1 Examples

Provides examples of creating FlexLogic logic, such as triggers and events.

4.4.1.2 Add existing FlexLogic equations

Guides on how to modify existing FlexLogic equations or create new ones.

4.4.1.3 Create logic diagram

Details the procedure for creating logic diagrams using the Logic Designer.

4.4.1.4 Compiled results and warning messages

Explains how to interpret compile results and warning messages in the FlexLogic design process.

4.4.1.5 Rapidly add logic blocks in sequence

Describes how to add logic blocks rapidly in sequence using the repeat symbol feature.

4.4.1.6 Connect two logic diagrams

Explains how to connect two logic diagrams to create continuous logic.

4.4.1.7 Optimize the logic

Guides on optimizing logic diagrams to reduce space and free up entries.

4.4.1.8 Change logic order

Explains how to change the order of FlexLogic population in the Equation Editor.

4.4.1.9 Search logic

Details how to search for items within a logic diagram.

4.4.1.10 Exclude sheet from compile

Explains how to exclude entire sheets from the compile logic for testing purposes.

4.4.2 Send file to and from device

Outlines the process for sending and retrieving files to and from a live device.

4.4.3 Monitor logic

Explains how to view the results from the device after creating, compiling, and uploading FlexLogic.

4.4.4 View front panel and print labels

Describes how to view and print labels for the front panel LEDs and pushbuttons.

4.4.5 Generate connectivity report

Explains how to generate a connectivity report displaying device information.

4.4.6 Preferences

Discusses preferences that determine functionality, accessible through menus and preference panels.

4.4.6.1 View menu

Details the options available in the View menu for the Logic Designer.

4.4.6.2 Logic designer

Outlines the settings for the Logic Designer panel.

4.4.6.3 Logic monitor

Explains how the software displays element states and colors.

4.4.7 Toolbars

Lists the toolbars available in the View > Toolbar menu for FlexLogic design.

4.4.7.1 FlexLogic Editor toolbar

Describes the tokens and toolbar icons used in the FlexLogic Editor.

4.4.7.2 Token Toolbox

Details the drawing tools available in the Token Toolbox for creating logic diagrams.

4.4.7.3 Basic Actions toolbar

Explains the basic actions available in the toolbar for manipulating components in the logic diagram.

4.4.7.4 Advanced Actions toolbar

Describes the advanced actions available in the toolbar for rotating and flipping objects.

5 Settings

5.1 Settings menu

Provides an overview of the settings menu structure, including product setup, security, and communications.

5.2 Overview

Provides an overview of settings, including introduction to elements and AC sources.

5.2.1 Introduction to elements

Defines 'element' as a feature based around a comparator and explains how elements are arranged.

5.2.2 CT/VT module configuration

Explains the configuration of CT/VT input channels and their arrangement.

5.3 Product setup

Outlines the product setup options, including security, display properties, and communications.

5.3.1 Security

Details the security features available, including password security, EnerVista security, and CyberSentry.

5.3.1.1 Security overview

Provides an overview of the security features, including default security settings.

5.3.1.2 Password security

Explains password security requirements and access levels for settings and commands.

5.3.1.3 EnerVista security

Describes how EnerVista security allows role-based access to software screens and configuration elements.

5.3.1.4 CyberSentry security

Explains the CyberSentry security feature, its options, and how it provides advanced security services.

5.3.1.5 EnerVista security (continued)

Details the authentication types supported by CyberSentry for accessing UR devices.

5.3.1.6 CyberSentry settings through EnerVista

Explains how to configure CyberSentry security settings via EnerVista software.

5.3.1.7 Session settings

Defines settings related to session lockout and inactivity timeouts.

5.3.1.8 Restore defaults

Explains how to restore settings, communication, and security passwords to factory defaults.

5.3.2 Display properties

Details settings for display properties, including language, flash message time, and screen saver.

5.3.3 Graphical front panel

Describes the graphical front panel as a hardware option for enhanced user interface.

5.3.3.1 Home page

Explains how to set the home page displayed on the graphical front panel, including date and time formats.

5.3.3.2 Rolling mode

Describes the rolling mode feature, which cycles through user-selected pages after a period of inactivity.

5.3.3.3 Metering editor

Explains how to use the metering editor to create pages of actual values for the graphical front panel.

5.3.3.4 Single-line diagram editor

Details the use of the single-line diagram editor for creating visual representations of the electrical system.

5.3.3.5 Annunciator editor

Explains how to create annunciator content for the graphical front panel, including alarms and actual values.

5.3.3.6 Configurable navigation

Describes the configurable navigation feature that allows FlexLogic operands to trigger page displays.

5.3.4 Clear relay records

Details how to clear various records, including event, oscillography, and data logger.

5.3.5 Communications

Outlines the communication protocols supported by the C70, including serial, network, and protocol selections.

5.3.5.1 Menu

Lists the communication settings available through the menu.

5.3.5.2 Serial ports

Details the RS232 and RS485 serial port settings, including baud rate, parity, and response time.

5.3.5.3 Ethernet network topology

Explains the Ethernet network topology options, including single LAN and multiple LANs with redundancy.

5.3.5.4 Network

Guides on configuring network settings, including IP addresses, subnet masks, and routing.

5.3.5.5 Far-End Fault Indication (FEFI)

Explains the FEFI feature for detecting link failures in Far-End Fault Indication.

5.3.5.6 Parallel Redundancy Protocol (PRP)

Defines the PRP redundancy protocol for high availability in substation automation networks.

5.3.5.7 IPv4 route table

Describes how to configure network IP and subnet settings for routing.

5.3.5.8 Modbus protocol

Details the Modbus protocol settings, including slave address and TCP port number.

5.3.5.9 Protocol selection

Allows selection of communication protocols such as DNP 3.0, IEC60870-104, or IEC60870-103.

5.3.5.10 DNP protocol

Details the DNP protocol settings, including channels, address, and client addresses.

5.3.5.12 IEC 61850 protocol

Explains the IEC 61850 settings for configuring C70 settings, accessed via EnerVista software.

5.6 FlexLogic

Explains the arrangement of internal digital logic and user-programmed parameters within FlexLogic.

5.6.1 FlexLogic operands

Describes the states of digital signals represented by flags, and how they are used in FlexLogic.

5.6.2 FlexLogic rules

Outlines general rules for forming FlexLogic equations, including operand and operator usage.

5.6.3 FlexLogic evaluation

Explains how each equation is evaluated in the ascending order of parameter entry.

5.6.4 FlexLogic example

Provides an example of logic implementation for a typical application.

5.6.5 FlexLogic equation editor

Describes the FlexLogic Equation Editor for creating and modifying FlexLogic equations.

5.6.6 FlexLogic timers

Details the 32 identical FlexLogic timers used as operators for FlexLogic equations.

5.6.7 FlexElements

Describes FlexElements as universal comparators for monitoring analog values.

5.6.8 Non-volatile latches

Explains non-volatile latches that provide permanent logical flags stored safely.

5.7 Grouped elements

Explains how protection elements can be assigned to up to six sets of settings for different operating situations.

5.7.1 Overview

Provides an overview of grouped elements and setting groups.

5.7.2 Setting group 1

Details the settings for Setting Group 1, including phase current, neutral current, and ground current.

5.7.3 Phase current

Describes the phase current overcurrent protection elements and their curve characteristics.

5.7.3.1 Menu

Outlines the menu for phase current settings within Setting Group 1.

5.7.3.2 Inverse TOC curve characteristics

Explains the inverse time overcurrent curves used by time overcurrent elements.

5.7.3.3 Phase time overcurrent (ANSI 51P, IEC PTOC)

Details the phase time overcurrent element, its operating principle, and settings.

5.7.3.4 Phase instantaneous overcurrent (ANSI 50P, IEC PIOC)

Describes the phase instantaneous overcurrent element and its settings.

5.7.3.5 Phase directional overcurrent (ANSI 67P, IEC PDOC/PTOC)

Explains the phase directional overcurrent element, its operating principle, and settings.

5.7.4 Neutral current

Describes neutral current unbalance protection functions and their connections.

5.7.4.1 Menu

Outlines the menu for neutral current unbalance settings.

5.7.4.2 Neutral time overcurrent (ANSI 51N, IEC PTOC)

Details the neutral time overcurrent element, its operating principle, and settings.

5.7.4.3 Neutral instantaneous overcurrent (ANSI 50N, IEC PIOC)

Describes the neutral instantaneous overcurrent element and its settings.

5.7.4.4 Neutral directional overcurrent (ANSI 67N, IEC PDEF/PTOC)

Explains the neutral directional overcurrent element, its operating principle, and settings.

5.7.4.5 Neutral current unbalance (ANSI 60N, IEC PVCB/PTOC)

Details the neutral current unbalance protection elements and their settings.

5.7.5 Ground current

Describes ground current and related protection elements.

5.7.5.1 Menu

Outlines the menu for ground current settings within Setting Group 1.

5.7.5.2 Ground time overcurrent (ANSI 51G, IEC PTOC)

Details the ground time overcurrent element, its operating principle, and settings.

5.7.5.3 Ground instantaneous overcurrent (ANSI 50G, IEC PIOC)

Describes the ground instantaneous overcurrent element and its settings.

5.7.6 Negative sequence current

Explains negative sequence current protection elements and their settings.

5.7.6.1 Menu

Outlines the menu for negative sequence current settings.

5.7.6.2 Negative sequence time overcurrent (ANSI 51Q, IEC PTOC)

Details the negative sequence time overcurrent element, its operating principle, and settings.

5.7.6.3 Negative sequence instantaneous overcurrent (ANSI 50Q, IEC PIOC)

Describes the negative sequence instantaneous overcurrent element and its settings.

5.7.6.4 Negative sequence directional overcurrent (ANSI 67Q, IEC PDEF/PTOC)

Explains the negative sequence directional overcurrent element, its operating principle, and settings.

5.7.7 Breaker failure (ANSI 50BF)

Details the breaker failure protection element and its settings.

5.7.8 Voltage elements

Describes various voltage elements used for protection, including undervoltage, overvoltage, and differential.

5.7.8.1 Menu

Outlines the menu for voltage elements, including phase, neutral, and negative sequence overvoltage.

5.7.8.2 Phase undervoltage (ANSI 27P, IEC PTUV)

Details the phase undervoltage element, its operating principle, and settings.

5.7.8.3 Phase overvoltage (ANSI 59P, IEC PTOV)

Describes the phase overvoltage element, its operating principle, and settings.

5.7.8.4 Neutral overvoltage (ANSI 59N, IEC PTOV)

Explains the neutral overvoltage element, its operating principle, and settings.

5.7.8.5 Negative-sequence overvoltage (ANSI 59Q, IEC PTOV)

Details the negative-sequence overvoltage element and its settings.

5.7.8.6 Auxiliary overvoltage (ANSI 59X, IEC PTOV)

Describes the auxiliary overvoltage element and its settings.

5.7.8.7 Bank voltage differential (ANSI 87V, IEC PDIF)

Details the bank voltage differential element and its settings.

5.7.8.8 Bank phase overvoltage settings

Guides on setting bank phase overvoltage protection, considering transient overvoltages and manufacturer specifications.

5.7.8.9 Neutral voltage unbalance (ANSI 59NU, IEC PVCB/PTOV)

Explains the neutral voltage unbalance element, its operating principle, and settings.

5.8 Control elements

Describes control elements used for control rather than protection, including trip bus and setting groups.

5.8.1 Overview

Provides an overview of control elements and their functions.

5.8.2 Trip bus

Details the trip bus element, which allows aggregating outputs of protection and control elements.

5.8.3 Setting groups

Explains how setting groups control the activation and deactivation of up to six possible groups of settings.

5.8.4 Selector switch

Describes the selector switch element, used for setting group control or logic sub-circuits.

5.8.5 Time of day timers

Explains the time of day timer function for programming control actions based on real time.

5.8.6 Capacitor control

Details the capacitor control element, which gathers on/off commands and maintains control rights.

5.8.7 Automatic voltage regulator

Describes the automatic voltage regulator element for regulating system voltage, load voltage, power factor, or reactive power.

5.8.8 Digital elements

Explains digital elements that can monitor any FlexLogic operand and present a target message.

5.8.9 Digital counters

Describes digital counters that count state transitions from Logic 0 to Logic 1.

6 Actual values

6.1 Actual values menu

Provides an overview of how to view data on the front panel and in the software.

6.1 Actual values menu (continued)

Continues the overview of actual values menus, including status, metering, and records.

6.2 Front panel

Explains how to view and use the front panel in the EnerVista software.

6.2.1 Enhanced and standard front panels

Details how to view the front panel in the EnerVista software.

6.2.2 Graphical front panel

Describes how to view annunciator alarms in EnerVista and how to acknowledge or reset them.

6.3 Status

Outlines how to view the present status of contact inputs and virtual inputs.

6.3.1 Contact inputs

Explains how the present status of contact inputs is displayed, including ID and logic state.

6.3.2 Virtual inputs

Explains how the present status of virtual inputs is displayed, including ID and logic state.

6.3.3 RxGOOSE boolean inputs

Describes the present state of RxGOOSE boolean inputs.

6.3.4 RxGOOSE DPS inputs

Describes the present state of RxGOOSE DPS inputs.

6.3.5 Teleprotection inputs

Shows the present state of teleprotection inputs from communication channels.

6.3.6 Contact outputs

Explains how the present state of contact outputs is displayed.

6.3.7 Virtual outputs

Explains how the present state of virtual outputs is displayed, including ID and logic state.

6.3.8 RxGOOSE status

Details the RxGOOSE status, indicating if RxGOOSE is configured or used.

6.3.9 RxGOOSE statistics

Displays RxGOOSE statistics, including number of messages and sequence numbers.

6.3.10 Digital counters

Shows the present status of the eight digital counters.

6.3.11 Selector switches

Displays the current position and full range of the selector switch.

6.3.12 Time of day timers

Shows the current state of each time of day timer.

6.3.13 Flex States

Indicates the state of FlexState bits.

6.3.14 Ethernet

Shows the status of the first, second, and third Ethernet links.

6.3.15 Real time clock synchronizing

Displays the current status of real-time clock synchronizing sources.

6.3.16 Direct inputs

Represents the state of direct devices 1 through 16.

6.3.17 Direct devices status

Represents the state of direct devices 1 through 16.

6.3.18 Teleprotection channel tests

Shows the status information for teleprotection channels.

6.3.19 Remaining connection status

Displays the remaining number of TCP connections available for each protocol.

6.3.20 Parallel Redundancy Protocol (PRP)

Defines the PRP redundancy protocol for high availability in substation automation networks.

6.3.21 TxGOOSE status

Shows the status relevant to R-GOOSE reception.

6.4 Metering

Explains the UR convention for measuring power and energy, and phase angles.

6.4.1 Metering conventions

Details the UR conventions for measuring power and energy, and phase angles.

6.4.1.1 UR convention for measuring power and energy

Illustrates the conventions established for use in UR devices for watts and VARs.

6.4.1.2 UR convention for measuring phase angles

Explains how UR devices calculate and display phase angles of symmetrical components.

6.4.1.3 UR convention for measuring symmetrical components

Describes how URs calculate voltage and current symmetrical components for power system phase A.

6.4.2 Sources

Displays metered values available for each source.

6.4.2.1 Menu

Outlines the menu for accessing metered values for each source.

6.4.2.2 Phase current metering

Displays metered phase current values, including RMS and phasor data.

6.4.2.3 Ground current metering

Displays metered ground current values.

6.4.2.4 Phase voltage metering

Displays metered phase voltage values, including RMS, phasor, and symmetrical components.

6.4.2.5 Auxiliary voltage metering

Displays metered auxiliary voltage values.

6.4.2.6 Power metering

Displays metered real, reactive, and apparent power, and power factor values.

6.4.2.7 Frequency metering

Displays metered frequency values.

6.4.2.8 Current harmonics and THD metering

Displays metered current harmonics and total harmonic distortion (THD) values.

6.4.2.9 Voltage harmonics and THD metering

Displays metered voltage harmonics and total harmonic distortion (THD) values.

6.4.3 Capacitor control

Indicates the time remaining before the next permissible close operation for capacitor banks.

6.4.4 Capacitor bank

Contains actual values for voltage differential, neutral voltage unbalance, phase current unbalance, and neutral current unbalance elements.

6.4.4.2 Voltage differential

Displays bus and differential signals in per-unit values of nominal bus voltage.

6.4.4.3 Neutral voltage unbalance

Displays magnitudes and angles of neutral point and bus V0 voltages.

6.4.4.4 Phase current unbalance

Displays magnitudes of raw differential current and compensated operating currents.

6.4.4.5 Neutral current unbalance

Displays magnitudes of the raw neutral split-phase current and compensated operating current.

6.4.5 Tracking frequency

Displays the tracked frequency value.

6.4.6 FlexElements

Displays operating signals for FlexElements in pu values.

6.5 Records

Outlines viewing user-programmable fault reports, event records, oscillography, and data logger.

6.5.1 User-programmable fault reports

Displays user-programmable fault report actual values.

6.5.2 Event records

Shows contextual data associated with the last 1024 events, listed chronologically.

6.5.2.1 Enhanced and standard front panels

Explains how to view event records from the front panel or software.

6.5.2.2 Graphical front panel

Describes how to display the event records page on the graphical front panel.

6.5.3 Oscillography

Allows viewing the number of triggers involved and oscillography traces.

6.5.4 Data logger

Allows viewing the oldest and newest sample times for the data logger.

6.5.5 Breaker maintenance

Displays breaker arcing current values and breaker operating time.

6.6 Product information

6.6.1 Model information

Displays order code, serial number, Ethernet MAC address, and manufacturing date.

6.6.2 Firmware revisions

Lists firmware revisions for the C70 relay, modification file number, and compile date.

6.6.2.1 Enhanced and standard front panels

Shows firmware revisions for the C70 relay, modification file number, and compile date.

6.6.2.2 Graphical front panel

Shows firmware revisions for the graphical front panel.

7 Commands and targets

7.1 Commands menu

Lists commands for operations personnel, protected by command password.

7.1.1 Capacitor bank automatic setting

Guides through automatic calculation of balancing factors for capacitor bank protection.

7.1.1.1 Menu

Outlines the menu for capacitor bank automatic setting.

7.1.1.2 Voltage differential

Explains the auto-setting feature for voltage differential elements.

7.1.1.3 Neutral voltage unbalance

Explains the auto-setting feature for neutral voltage unbalance function.

7.1.1.4 Phase current unbalance

Explains the auto-setting feature for phase current unbalance function.

7.1.1.5 Neutral current unbalance

Explains the auto-setting feature for neutral current unbalance function.

7.1.2 Virtual inputs

Describes how to change the states of up to 64 virtual inputs.

7.1.3 Clear records

Details how to clear various records, including event, oscillography, and data logger.

7.1.4 Set date and time

Explains how to set the date and time on the front panel keypad or synchronize with a computer.

7.1.5 Relay maintenance

Outlines commands for relay maintenance purposes, such as lamp test and reboot.

7.1.6 Security

Explains how to enable security system and require password use.

7.2 Targets menu

Monitors target messages of active devices.

7.2.1 Target messages

Describes how target messages are displayed and prioritized.

7.2.2 Relay self-tests

Explains the relay's self-test diagnostic checks for device integrity.

7.2.2.1 Description

Details the types of self-tests (major and minor) and their outcomes.

7.2.2.2 Major self-test error messages

Lists and describes major self-test errors and their resolution.

7.2.2.3 Minor self-test error messages

Lists minor self-test errors that can be disabled.

7.2.2.4 HardFiber major self-test error messages

Lists major self-test errors specific to HardFiber devices.

7.2.2.5 HardFiber minor self-test error messages

Lists minor self-test error messages related to HardFiber communications problems.

8 Application of settings

8.1 Arrangement of shunt capacitor banks

Discusses the different types of shunt capacitor bank arrangements and connections.

8.1.1 Overview

Provides an overview of capacitor bank protection, considering bank type, configuration, and connections.

8.1.2 Externally fused capacitors

Describes externally fused capacitor banks and their protection.

8.1.3 Internally fused capacitors

Describes internally fused capacitor banks and their typical configurations.

8.1.4 Fuseless capacitors

Explains fuseless capacitor banks, their connection, and application at higher voltages.

8.1.5 Unfused capacitors

Describes unfused shunt capacitor banks, typically used on banks below 34.5 kV.

8.2 Connections of shunt capacitor banks

Details the connections for shunt capacitor banks, including grounded wye and ungrounded wye configurations.

8.2.1 Grounded wye-connected banks

Describes grounded wye capacitor banks and their characteristics.

8.2.2 Ungrounded wye-connected banks

Describes ungrounded wye capacitor banks and their advantages.

8.2.3 Delta connected banks

Describes delta-connected banks, typically used at distribution voltages.

8.2.4 H-configuration

Explains the H-configuration for larger banks with many capacitor units in parallel.

8.2.5 Tapped configuration

Describes tapped configurations used with voltage transformers for sensitive protection.

8.2.6 Summary

Summarizes the different connection types for capacitor banks.

8.3 Protection methods for capacitor banks

Covers bank and system protection schemes for shunt capacitor banks.

8.3.1 Overview

Discusses protection of capacitor banks from internal and external faults.

8.3.2 Capacitor unbalance protection

Explains how unbalance protection detects abnormalities and initiates actions to protect the bank.

8.3.2.1 Connections

Illustrates connections for unbalance protection schemes.

8.3.2.2 Unbalance alarm element considerations

Provides guidance on setting the unbalance relay alarm for optimal performance.

8.3.2.2 Unbalance trip element considerations

Offers points to consider when using the unbalance trip element, including minimizing time delay.

8.3.3 Protection for rack faults (arc-over within capacitor banks)

Details protection methods for arc-over faults within capacitor banks, emphasizing fast unbalance elements.

8.3.4 Overvoltage

Discusses protection against overvoltages from abnormal system conditions and the use of three-phase overvoltage protection.

8.3.5 Overcurrent

Explains the application of phase and neutral time overcurrent elements and their settings.

8.3.6 Loss of bus voltage

Discusses tripping a shunt capacitor bank due to loss of supply bus voltage, including conditions to consider.

8.4 Settings example

Provides an example of protection settings for a capacitor bank.

8.4.1 Overview

Outlines the characteristics of a sample capacitor bank used for protection examples.

8.4.2 VT and CT setup

Shows the connection of VT and CT channels and lists the applied settings in EnerVista UR Setup software.

8.4.3 Source assignment

Explains the assignment of sources for protection functions, including bus, tap, and window CT banks.

8.4.4 Bank unbalance calculations

Details the calculations used for bank unbalance, including impedance and voltage distribution factors.

8.4.5 Bank voltage differential settings

Explains the settings for bank voltage differential elements, including bus source and tap source.

8.4.6 Bank phase current unbalance settings

Details the settings for phase current unbalance stages, including pickup and slope.

8.4.7 Bank phase overvoltage settings

Guides on setting bank phase overvoltage protection, considering transient overvoltages and manufacturer specifications.

8.4.8 Bank phase undervoltage settings

Explains the settings for bank undervoltage protection, including pickup and time delay.

8.4.9 Bank overcurrent protection

Discusses setting overcurrent protection for capacitor banks against major faults.

9 Theory of operation

9.1 Overview

Provides advanced information on the operation of capacitor banks and their protection.

9.1.1 General operation

Explains the general operation of static capacitor banks, including voltage distribution and element failures.

9.1.2 Bank phase overvoltage (ANSI 59B)

Discusses bank phase overvoltage protection and its operating principle.

9.1.3 Voltage differential (ANSI 87V)

Explains the operating principle of the voltage differential function.

9.1.3.1 Operating principle

Details the voltage divider principle behind the voltage differential function.

9.1.3.2 Balanced case

Explains the grounded bank operating equation for voltage differential protection.

9.1.4 Compensated bank neutral voltage unbalance (ANSI 59NU)

Explains the operating principle of compensated neutral voltage unbalance protection.

9.1.4.1 Operating principle

Details the operate and restraint signals for neutral voltage unbalance protection.

9.1.4.2 Balanced case

Explains the balanced case for neutral voltage unbalance protection calculations.

9.1.4.5 Auto-setting

Describes the auto-setting command for calculating unbalance factor settings.

9.1.5 Phase current unbalance (ANSI 60P)

Explains the operating principle of phase current unbalance detection.

9.1.5.1 Operating principle

Details the operate signal and current measurement for phase current unbalance.

9.1.5.2 Balanced case

Explains the balanced case calculations for phase current unbalance protection.

9.1.5.4 Auto-setting

Describes the auto-setting command for calculating unbalance factor settings.

9.1.6 Neutral current unbalance (ANSI 60N)

Explains the operating principle of neutral current unbalance detection.

9.1.6.1 Operating principle

Describes the balance between interconnected neutral currents and compensation for unbalance.

9.1.6.2 Balanced case

Explains the balanced case calculations for neutral current unbalance.

9.1.6.3 Sensitivity

Discusses how sensitivity is affected by external faults and how to calculate derivatives.

9.1.6.4 Restraint

Explains the restraint supervision applied to prevent misoperation under system voltage unbalance.

9.1.6.5 Auto-setting

Describes the auto-setting command for calculating unbalance factor settings.

9.1.6.6 Application to ungrounded capacitor banks

Details exceptions for applying neutral current balance protection to ungrounded configurations.

10 Maintenance

10.1 Monitoring

Outlines how devices and data can be monitored.

10.1.1 Devices with Site Targets

Explains how to view an overview of devices and acknowledge messages.

10.1.2 Data with Modbus Analyzer

Describes how to use the Modbus Analyzer to monitor UR device values.

10.2 General maintenance

Provides guidelines for general maintenance of the C70, including in-service, out-of-service, and unscheduled maintenance.

10.2.1 In-service maintenance

Lists tasks for in-service maintenance, such as visual verification and LED tests.

10.2.2 Out-of-service maintenance

Details tasks for out-of-service maintenance, including wiring checks and setting verification.

10.2.3 Unscheduled maintenance (system interruption)

Explains how to handle unscheduled maintenance and system interruptions.

10.3 Retrieve files

Guides on transferring data files using EnerVista software or a USB flash drive.

10.3.1 CyberSentry security event files

Lists the files containing CyberSentry security events.

10.3.1.1 Security events file

Shows the content of the SECURITY_EVENTS.CSV file.

10.3.1.2 Setting changes file

Describes the SETTING_CHANGES.LOG file that stores setting changes.

10.4 Convert device settings

Explains how to convert device settings between firmware versions and the required additional configuration for IEC 61850.

10.5 Copy settings to other device

Details how to copy settings from one C70 device to another for rapid deployment.

10.6 Compare settings

Explains how settings can be compared against default values or between two UR devices.

10.6.1 Compare against defaults

Guides on comparing settings against default values.

10.6.2 Compare two devices

Explains how to compare settings between two devices in the Offline or Online Window areas.

10.7 Back up and restore settings

Describes how to back up and restore settings for commissioned UR devices.

10.7.1 Back up settings

Lists the file types that can be saved (.URS, .IID, .CID) and the procedure for saving settings.

10.7.2 Restore settings

Guides on restoring settings from URS or IID files using EnerVista software or SFTP.

10.8 Upgrade software

Outlines the procedure for upgrading or downgrading EnerVista software and firmware.

10.9 Upgrade firmware

Details the process for upgrading C70 device firmware using EnerVista software.

10.10 Replace front panel

Provides instructions for installing a graphical front panel, including removing the old one and installing mounting brackets.

10.10 Replace front panel (continued)

Continues instructions for replacing the front panel, including removing mounting brackets.

To replace the CPU module

Details the procedure for replacing the CPU module, including disconnecting cables and removing the module.

10.11 Replace module

Outlines the procedure for replacing modules within the relay, emphasizing using correct module types and removing power.

10.12 Battery

Discusses the battery that powers the real-time clock and its replacement.

10.12.1 Replace battery for SH/SL power supply

Provides steps for replacing the battery in the power supply module.

10.12.2 EN Battery disposal

Provides disposal information for batteries in the European Union.

10.13 Clear files and data after uninstall

Outlines procedures for clearing files and data after uninstalling software or devices.

10.14 Repairs

Explains how to return a device to the factory for repair, including contact information and packing instructions.

10.15 Storage

Provides guidelines for storing the unit indoors in a cool, dry place.

10.16 Disposal

Outlines requirements for unit disposal and battery recycling.

Appendix B: RADIUS server configuration

B.1 RADIUS server configuration

Outlines the procedure for setting up a simple RADIUS server for user authentication.

Appendix C: Command line interface

C.1 Command line interface

Explains how to use SetupCLI as a command line interface to communicate with EnerVista UR Setup software.

Appendix D: Miscellaneous

D.1 Warranty

Provides information on the GE Grid Solutions product warranty.

D.2 Revision history

Outlines the release and revision history of the document.

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