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Multilin C70
Capacitor Bank Protection & Control System

The C70 is an integrated protection, control, and monitoring device for shunt capacitor banks based on the well established and proven UR relay platform of GE Multilin. The C70 provides both the bank and system protection schemes for shunt capacitor bank protection. The current and voltage-based protection functions provide sensitive protection for grounded, ungrounded single, and parallel capacitor banks and banks with taps.

Key Benefits

  • Protect capacitor banks for a variety of configurations with sensitive current and voltage balance protection functions
  • Advanced IEC61850 Ed. 2 certified implementation, complete settings via SCL files and IEC 61850-9-2 process bus solution enable resource and platform managing optimization and reduce cost of ownership
  • Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
  • Adaptive compensation techniques truly compensate for inherent bank unbalances, providing sensitive protection
  • Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control
  • Custom programmable logic for advanced shunt capacitor bank controls
  • Flexible automatic voltage regulation (AVR) of shunt capacitor banks along with control supervision
  • Reduced relay-to-relay wiring and associated installation costs through high-speed inter-relay communications
  • Ambient temperature monitoring with alarms when outside temperature exceeds upper thresholds
  • Supports latest edition of waveform capture (COMTRADE 2013) simplifying fault records management
  • Supports English, French, Russian, Chinese, Turkish and German languages on the front panel, software and manuals

Applications

  • Protection, control, monitoring and automation of shunt capacitor banks with different voltages
  • Sensitive protection for grounded, ungrounded single and parallel capacitor banks and banks with taps, for a variety of capacitor bank configurations
  • Shunt capacitor bank-based AVR and capacitor control supervision
  • Suitable for protecting multiple capacitor banks
Protection & Control
Monitoring & Metering
Communications
Software & Secutrity
What's New

Key Benefits

  • Voltage differential protection
  • Compensated bank neutral voltage unbalance
  • Phase and neutral current unbalance protection, phase, ground and neutral overcurrent, thermal overload, phase and negative sequence directional overcurrent, neutral directional overcurrent with dual polarity criteria and broken conductor
  • Bank phase overvoltage
  • Negative sequence overvoltage
  • User-programmable logic for custom schemes
  • Automatic voltage regulator (AVR) for switching capacitor banks based on voltage, power factor and reactive power
  • Time and date function, allowing capacitor bank switching based on time of day, week and seasons
  • Capacitor control supervision block for processing commands from SCADA, and remote communication

Protection & Control

The C70 provides sensitive protection functions designed specifically to protect shunt capacitor banks effectively. The C70 provides current-based protection functions, which include phase, ground, and neutral instantaneous and time overcurrent elements for standard overcurrent protection of the bank. Two elements per configured CT bank are available. The C70 also provides breaker failure protection and standard voltage-based protection functions. Apart from the standard current and voltage-based functions, the C70 comes with protection functions specifically designed to provide sensitive protection for capacitor banks in a single box.

Applications

Key Features

  • Metering - current, voltage, power, energy, frequency
  • Oscillography – analog and digital parameters at 64 samples/cycle
  • Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs
  • Data Logger - 16 channels with sampling rate up to 1 sample / cycle
  • Advanced relay health diagnostics
  • Setting for security audit trails for tracking changes to C70 configurations

Monitoring & Diagnostic

The C70 includes high accuracy metering and recording for all AC signals. Voltage, current, and power metering are built into the relay as a standard feature. Current and voltage parameters are available as total RMS magnitude, and as fundamental frequency magnitude and angle.

Monitoring & Diagnostic

Analyze capacitor bank faults using both analog and digital power system quantities that are measured and recorded up to a rate of 64 samples per cycle.

Advanced Automation

The C70 incorporates advanced automation features including powerful FlexLogic™ programmable logic, communication, and SCADA capabilities that far surpass what is found in the average capacitor bank relay. The C70 integrates seamlessly with other UR relays for complete system protection.

Advanced Automation

FlexLogic™ allows for the customization of C70 outputs for capacitor bank protection schemes and applications.

Key Features

  • Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P & C life cycle costs
  • Three independent 100Mbps Ethernet ports enable purpose specific LAN support that eliminates latency effect of heavy traffic protocols on mission critical communication services
  • Embedded IEEE 1588 time sync protocol support eliminates dedicated IRIG-B wiring requirements for IEDs
  • Direct I/O secures high-speed exchange of binary data between URs
  • Increase network availability by reducing failover time to zero through IEC62439-3 "PRP" support

Advanced Communications

The C70 provides advanced communications technologies for remote data and engineering access, making it easy and flexible to use and integrate into new and existing infrastructures. Direct support for fiber optic Ethernet provides high-bandwidth communications allowing for low-latency controls and high-speed file transfers of relay fault and event record information. The available three independent and redundant Ethernet options provide the means to create fault tolerant communication architectures in an easy, cost-effective manner. 
The C70 supports the most popular industry standard protocols enabling easy, direct integration into DCS and SCADA systems.

  • IEC 61850 Ed. 2 with 61850-9-2 (process bus) support
  • DNP 3.0 (serial & TCP/IP)
  • IEC 60870-5-103 and IEC 60870-5-104
  • Modbus RTU, Modbus TCP/IP
  • HTTP, TFTP, SFTP and MMS file transfer
  • SNTP and IEEE 1588 for time synchronization
  • PRP as per IEC 62439-3
  • Supports Routable GOOSE (R-GOOSE)

UR Switch Module

UR Switch Module

In addition to providing high-speed connectivity directly to your Universal Relay, the UR Switch Module provides an additional 4 fiber Ethernet ports, for connection to other relays in the system as well as upstream connectivity. It also provides 2 RJ45 copper Ethernet ports which can be used to connect local devices such as PCs, meters, or virtually anything else in the system.

The UR Switch Module provides a simple way to add fully-managed Ethernet networking to your relays and devices without the need for additional hardware or a dedicated communications cabinet.

The UR Switch Module includes all of the management and features that come with all MultiLink managed switches, and can be easily integrated into a network that has other Ethernet switches.

When used in a ring topology with other UR Switch Modules or MultiLink Switches, the UR Switch Module can be configured to use MultiLink’s Smart RSTP feature to provide industry-leading network recovery for ring topologies, at a speed of less than 5ms per switch. Learn More

Interoperability with Enbedded IEC 61850

Use the C70 with integrated IEC 61850 to lower costs associated with generator protection, control and automation. GE’s leadership in
IEC 61850 comes from thousands of installed devices and follows on years of development experience with UCA 2.0.

The C70’s IEC 61850 Process Bus module is designed to interface with the Multilin HardFiber System, allowing bi-directional IEC 61850 fiber optic communications. The HardFiber System is designed to integrate seamlessly with existing Universal Relay applications, including protection functions, FlexLogic, metering and communications. Learn More

Cyber Secutrity - CyberSentry™ UR (FW v7.4xx)

CyberSentry enables UR devices to deliver full cyber security features that help customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:

Password Complexity

Supporting up to 20 alpha- numeric or special characters, UR passwords exceed NERC CIP requirements for password complexity. Individual passwords per role are available.

AAA Server Support (Radius)

Enables integration with centrally managed authentication and accounting of all user activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.

Role Based Access Control (RBAC)

Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication. 

Event Recorder (Syslog for SEM)

Capture all cyber security related events within a SOE element (login, logout, invalid password attempts, remote/local access, user in session, settings change, FW update, etc), and then serve and classify data by security level using standard Syslog data format. This enables UR devices integration with established SEM (Security Event Management) systems.

EnerVista™ Software

The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the C70 relay. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the C70 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the UR setup software included with every UR relay, to carry out postmortem event analysis and ensure proper protection system operation. Learn More

EnerVista Software

New and Enhanced Communication Capabilities

  • Increases GOOSE message reception up to 64 remote devices (FW v7.40)
  • R-GOOSE enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
    (FW v7.40)
  • IEC 61850 in line with Edition 2, IEC 61850 SCL file for all relay's setting (FW 7.30)
  • Three independent Ethernet ports
  • Time synchronization via IEEE 1588 (FW v7.00)
  • PRP as per IEC 62439-3 (FW 7.10)
  • IEC 60870-5-103 (FW v7.20)
  • New IRC module that combines C37.92 multimode and direct connection singlemode (FW v7.20)

Cyber Security - CyberSentry UR (FW v7.xx)

CyberSentry enables UR devices to deliver full cyber security features that help customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:

  • Password Complexity
  • AAA Server Support (Radius)
  • Role Based Access Control (RBAC)
  • Event Recorder (Syslog for SEM)

Fully Compatible with GE's Multlilin HardFiber System - Provides support for GE's IEC 61850 HardFiber Process Bus Solution:

  • Complete IEC 61850 Process Bus Solution providing resource optimization and minimizing total P&C life cycle costs
    Learn More

Extended Oscillography Records (FW v7.xx)

  • Supports IEEE C37.111-1999/2013, IEC 60255-24 Ed 2.0 COMTRADE 2013 standard (FW v7.40)
  • Configurable events allow for records of up to 45s at 64 samples per cycle

New and Enhanced Protection and Control Functionality (FW version 5.90)

  • New thermal overload element
  • Neutral directional overcurrent with dual polarity criteria "67N" (FW v 7.20)