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ALSTOM GE Bus Protection

Our product range includes a wide range of micom agile p74x distributed busbar differential relay, b90 bus differential system, mcag high impedance bus differential relay, b30 bus differential system, mvtp - buswire supervision relay and mfac high impedance bus differential relay.
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MiCOM Agile P74x Distributed Busbar Differential Relay
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MiCOM Agile P74x Distributed Busbar Differential Relay

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The MiCOM Agile P74x offers high performance, secure and sensitive protection for all types of busbar configurations at all voltage levels. Consisting of the Agile P741, P742 and P743 relays, the P74x platform is engineered to provide a centralized or distributed architecture with CT saturation detection, dynamic topology processing algorithms and a fast reset (less than 1 cycle) circuit breaker failure element.

Key benefits:

Tripping time is constant, less than 1 cycle and independent of the fault current, the substation topology and the number of feeders
Free of charge software tools for easy scheme monitoring
Connection between central and peripheral units is by fiber, eliminating EMC, touch and step potential issues


Additional Information:
  • Item Code: P74x
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B90 Bus Differential System
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B90 Bus Differential System

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The Multilin B90 bus protection relay, a member of the UR Family, features integrated protection and breaker failure for re-configurable MV, HV, EHV multi-section busbars with up to 24 feeders. Use one or more B90 relays together to build a flexible protection system that can be engineered to meet specific application requirements. The B90 performs fast and secure low-impedance bus protection with a sub-cycle tripping time of 0.75 cycles and 06 differential zones per phase.

Key Benefits

High-speed protection algorithm for enhanced stability with trip times of 0.75 power cycle
Superior CT saturation detector that operates with only 2 msec of saturation-free current for enhanced through-fault stability
Suitable for different bus configurations, scalable architecture to protect up to 24 feeders
Advanced IEC61850 Ed. 1 and Ed. 2 certified implementation and complete setting in a single SCL file ensures interoperability, device management optimization and reduced cost of ownership
Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
Use high-speed communications to reduce wiring and installation costs
Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control
Integrated isolator position monitoring & alarming
Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization
An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors


Additional Information:
  • Item Code: B90
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MCAG High Impedance Bus Differential Relay
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MCAG High Impedance Bus Differential Relay

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MCAG relays provide high-speed differential protection for various types of power system plants Including generators, reactors, busbars, motors and the individual windings of power transformers. The relays provide current-calibrated busbar differential and have an attracted armature design with simple and robust construction.

Key features:

High thermal withstand - improved when used with the stabilising resistor
Long service history, over 43,000 delivered since 1984
Design pedigree coming from over a million auxiliary relays in-service


Additional Information:
  • Item Code: MCAG
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B30 Bus Differential System
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B30 Bus Differential System

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The Multilin B30 bus protection relay features integrated protection, control and metering for MV, HV and EHV busbars, providing cost-effective, feature-focused busbar protection. Use the B30 to protect busbars with up to 6 feeders with up to two three-phase differential zones. The Multilin B30 relay is a cost-effective alternative to high-impedance schemes, ideal for breaker-and-half bus schemes, with integrated feeder backup protection and metering.
Key Benefits

High speed differential protection algorithm for sub-cycle trip times of 0.75 power cycle
Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and highly flexible process bus support (IEC 61850-9-2LE or IEC 61850-9-2 Hardfiber) ensures interoperability, device managing optimization and reduced cost of ownership
Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications
Superior CT saturation detection with only 2 msec of saturation-free current for enhanced through-fault stability
Advanced automation capabilities for providing customized protection and control solutions
Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization
Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control
Simplified system integration supporting serial and Ethernet interfaces and multiple protocols
An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors


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  • Item Code: B30
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MVTP - Buswire Supervision Relay
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MVTP - Buswire Supervision Relay

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Buswire Supervision Relay
Used to ensure the integrity of busbars and restricted earth fault schemes, the MVTP monitoring device has a low AC burden and requires no external resistors.

Single and 3-phase for continuous buswire supervision

Available in single and 3-phase relays, the MVTP provides continuous supervision of the buswires in high impedance type busbar protection schemes. It also detects open-circuited buswires as well as open-circuited main current transformers.

Integral buswire shorting facility

MVTP is equipped with an integral buswire shorting facility. With low AC burden capacity, MVTP requires no external resistors. It also ensures that MCAG and MFAC schemes are available.


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  • Item Code: MVTP
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MFAC High Impedance Bus Differential Relay
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MFAC High Impedance Bus Differential Relay

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MFAC
High Impedance Bus Differential Relay
MFAC relays provide high-speed differential protection for various types of power system plants including generators, reactors, busbars, motors and the individual windings of power transformers. MFAC relays are fast and reliable due to simple electromechanical construction and operate as a high impedance unit protection scheme with a wide range of setting.

Two versions for phase and earth fault protection

The MFAC relay operates as a high impedance unit protection scheme, with settings determined by a series of resistors. The resistors are selected on a seven-way plug bridge.

MFAC 14, a single element version, is applied only when earth fault protection is required. MFAC 34, comprised of three elements, provides both phase and earth fault protection.

Wide settings range with a simple, robust design

Ensuring high stability with through faults, MFAC relays benefit from a simple application technique. With 'tuned to rated frequency' and a wide settings range, the MFAC has a robust and straightforward design.

MFAC
High Impedance Bus Differential Relay
MFAC relays provide high-speed differential protection for various types of power system plants including generators, reactors, busbars, motors and the individual windings of power transformers. MFAC relays are fast and reliable due to simple electromechanical construction and operate as a high impedance unit protection scheme with a wide range of setting.

Two versions for phase and earth fault protection

The MFAC relay operates as a high impedance unit protection scheme, with settings determined by a series of resistors. The resistors are selected on a seven-way plug bridge.

MFAC 14, a single element version, is applied only when earth fault protection is required. MFAC 34, comprised of three elements, provides both phase and earth fault protection.

Wide settings range with a simple, robust design

Ensuring high stability with through faults, MFAC relays benefit from a simple application technique. With 'tuned to rated frequency' and a wide settings range, the MFAC has a robust and straightforward design.


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  • Item Code: MFAC
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HID High Impedance Differential Module
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HID High Impedance Differential Module

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Use the HID module in conjunction with a high-speed overcurrent relay to provide three phase high impedance differential protection for substation busbars of any voltage level. Additionally, it can also be used to protect electrical machines like transformers, generators or motors against restricted ground faults.

Each HID module includes resistors that provide the associated high impedance relay with stability againstexternal faults, and varistors (MOV - Metal Oxide Varistors) in order to limit the secondary peak voltage below 2 kV during fault conditions.

Use the auxiliary contacts provided by an optional latching relay to short-circuit the resistors once the associated relay has tripped, to prevent the fault current from circulating through the resistors.

The HID front panel incorporates a Reset pushbutton to reset the latching relay once the fault has been cleared, in order to eliminatethe resistors short circuit.

Features & Benefits:

Single-zone bus protection, reactor protection, or sensitive restricted earth fault protection on grounded, wye-connected power transformer windings
Provides metal oxide varistors (MOV) to clamp secondary peak voltage to less than 2 kV


Additional Information:
  • Item Code: HIDD
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KITZ 274 Interface
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KITZ 274 Interface

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The KITZ 274 is suitable for local desktop computers or remote substations. This flexible protocol converter can be used for a wide range of connections and its high quality design ensures optimum reliability.

Specific firmware for direct SCADA interfacing

Like the 100 and 20x series, the KITZ 274 model provides conversion between K-BUS ports of IEC60870 format data. However, specific P740 Courier firmware is used so as to directly interface with integrated SCADA systems. It is suitable for mounting and enables communications with up to 32 devices at a maximum distance of 1km in electronically hostile environments.

Quality connection in local and remote locations

The KITZ 274 ensures simple EIA232 connections for both local and remote locations. Designed to meet the same high standards as protection relays, it ensures interfaces for up to eight MiCOM Alstom P74x Courier relays to an IEC60870-5-103 or VDEW master station.


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  • Item Code: KITZ
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P741 Differential Busbar Protection Relay
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P741 Differential Busbar Protection Relay

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The MiCOM Agile P74x offers high performance, secure and sensitive protection for all types of busbar configurations at all voltage levels. Consisting of the Agile P741, P742 and P743 relays, the P74x platform is engineered to provide a centralized or distributed architecture with CT saturation detection, dynamic topology processing algorithms and a fast reset (less than 1 cycle) circuit breaker failure element.

Key benefits:

  • Tripping time is constant, less than 1 cycle and independent of the fault current, the substation topology and the number of feeders
  • Free of charge software tools for easy scheme monitoring
  • Connection between central and peripheral units is by fiber, eliminating EMC, touch and step potential issues
  • Typical operating time of 8ms with high speed/high break contacts, 13ms with standard contacts
  • Sensitive earth fault elements improve detection of resistive or arcing faults
  • Phase segregated biased current differential high speed busbar protection
  • Easy maintenance, operation and future expansion of the busbar supported
  • Up to 28 peripheral units supported - scalable busbar solutions from medium to large substations

Key benefits:

  • Interoperable with all classes of CT: IEEE, IEC, air-gapped, non-gapped, and CTs with moderate knee point voltage
  • IEC 61850 redundant Ethernet, supporting self healing ring, RSTP, dual homing, PRP or HSR
  • True subcycle busbar protection - transmission class security and dependability

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P742 Differential Busbar Protection Relay
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P742 Differential Busbar Protection Relay

Product Price : Get Latest Price

The MiCOM Agile P74x offers high performance, secure and sensitive protection for all types of busbar configurations at all voltage levels. Consisting of the Agile P741, P742 and P743 relays, the P74x platform is engineered to provide a centralized or distributed architecture with CT saturation detection, dynamic topology processing algorithms and a fast reset (less than 1 cycle) circuit breaker failure element.

Key benefits:

  • Tripping time is constant, less than 1 cycle and independent of the fault current, the substation topology and the number of feeders
  • Free of charge software tools for easy scheme monitoring
  • Connection between central and peripheral units is by fiber, eliminating EMC, touch and step potential issues
  • Typical operating time of 8ms with high speed/high break contacts, 13ms with standard contacts
  • Sensitive earth fault elements improve detection of resistive or arcing faults
  • Phase segregated biased current differential high speed busbar protection
  • Easy maintenance, operation and future expansion of the busbar supported
  • Up to 28 peripheral units supported - scalable busbar solutions from medium to large substations

Key benefits:

  • Interoperable with all classes of CT: IEEE, IEC, air-gapped, non-gapped, and CTs with moderate knee point voltage
  • IEC 61850 redundant Ethernet, supporting self healing ring, RSTP, dual homing, PRP or HSR
  • True subcycle busbar protection - transmission class security and dependability

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P743 Differential Busbar Protection Relay
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P743 Differential Busbar Protection Relay

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The MiCOM Agile P74x offers high performance, secure and sensitive protection for all types of busbar configurations at all voltage levels. Consisting of the Agile P741, P742 and P743 relays, the P74x platform is engineered to provide a centralized or distributed architecture with CT saturation detection, dynamic topology processing algorithms and a fast reset (less than 1 cycle) circuit breaker failure element.

Key benefits:

  • Tripping time is constant, less than 1 cycle and independent of the fault current, the substation topology and the number of feeders
  • Free of charge software tools for easy scheme monitoring
  • Connection between central and peripheral units is by fiber, eliminating EMC, touch and step potential issues
  • Typical operating time of 8ms with high speed/high break contacts, 13ms with standard contacts
  • Sensitive earth fault elements improve detection of resistive or arcing faults
  • Phase segregated biased current differential high speed busbar protection
  • Easy maintenance, operation and future expansion of the busbar supported
  • Up to 28 peripheral units supported - scalable busbar solutions from medium to large substations

Key benefits:

  • Interoperable with all classes of CT: IEEE, IEC, air-gapped, non-gapped, and CTs with moderate knee point voltage
  • IEC 61850 redundant Ethernet, supporting self healing ring, RSTP, dual homing, PRP or HSR
  • True subcycle busbar protection - transmission class security and dependability

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P747 Busbar Protection IED
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P747 Busbar Protection IED

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The MiCOM Agile P747 provides complete protection for voltage levels up to extra high voltage busbar configurations with a centralized 3-box architecture. The MiCOM Agile P747 can accommodate up to 4 zones plus check zone and protect up to 18 terminals. The MiCOM Agile P747 Is particularly useful in double busbar with double bus coupler applications and allows a high number of opto inputs, relay outputs, and virtual inputs and outputs to manage the complete substation scheme.

The MiCOM Agile P747 also incorporates enhanced circuit breaker failure logic with additional protection functions such as dead zone and overcurrent. In addition, the MiCOM Agile P747 provides a wide range of measurement, monitoring, post fault analysis and self-diagnostic features. Powerful programmable scheme logic, trip circuit supervision, fully customizable menu texts, multi-level password protection, on-line measurements and plant status monitoring are all included. MiCOM Agile P747 employs an innovative external fault detection algorithm to ensure stability when CTs become saturated.

Key benefits:

  • Tripping time is independent of substation topology and number of feeders
  • User-friendly software tools for scheme monitoring
  • Built-in CT saturation proof breaker failure protection
  • Harsh environment protection extends the life of the product

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P746 Numerical Busbar Protection
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P746 Numerical Busbar Protection

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The MiCOM Agile P746 provides complete protection for MV and HV busbar configurations with up to 2 zones plus a check zone and up to 18 terminals. The MiCOM Agile P746 provides a centralized one box or three box architecture and is very simple to use, as it does not need to be deeply engineered and supports easy operation and maintenance of busbars.

The MiCOM Agile P746 protects voltage levels up to extra-high voltage busbar configurations. Proven techniques and dynamic topology processing algorithms offer a combination of security, speed and sensitivity, with simple configuration for centralized architectures.

Key benefits:

  • Tripping time is independent of substation topology and number of terminals
  • User-friendly software tools for scheme monitoring
  • Built-in CT saturation proof breaker failure protection
  • Harsh environment protection extends the life of the product

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