Category: ABB

Additional plug-and-play functionality

Bay units can be added to an existing REB500 system in a simple way.

Due to the modular and flexible architecture of the software, integration of new units is easily achieved.

In the event of a failure, a bay unit can be easily replaced.

During system startup the new bay unit requests its address, this can be entered directly via its LHMI.

The necessary setting values and configuration data are then downloaded automatically Central unit (500CU04)

The hardware structure is based on a closed, monolithic casing.

The central unit is the system manager, i.e. it configures the system, contains the busbar replica, assigns bays

within the system, manages the sets of operating parameters, acts as REB500 process bus controller,

assures synchronization of the system and communicates with the station control and monitoring system.

The variables for the busbar protection function are derived dynamically from the process data provided by the bay units.

The process data is transferred to the central processor via the REB500 process bus interface.

The central unit is able to handle data from up to 60 bay units and evaluate up to 32 bus zones.

In addition to processing the protection zone data, the central unit provides a disturbance recorder for all 32 bus

zones, recording the main data of the busbar protection to facilitate quick fault analysis.

The central unit offers 9 binary inputs and 19 binary outputs for central commands and signals (e.g. external

bus zone trip, trip-reset etc.). Additional 9 binary inputs and 9 binary outputs are optional available.

The central unit comprises a local HMI with 15 programmable LEDs (Figure 8) including a front Ethernet

port for HMI connection within the local area network.

The numerical busbar protection REB500 is designed for the high-speed (sub-cycle), selective protection of MV, HV

and EHV busbar installations at a nominal frequency of 50, 60 Hz The modular system structure is enabling the protection to

be easily configured to suit the layout of the primary system.

The flexibility of the system enables all configurations of busbars from single to quadruple, with transfer buses or

ring busbars and 1½ breaker schemes to be protected.

In 1½ breaker schemes the busbars and entire diameters, including Stub/T-Zone can be protected. 

An integrated tripping scheme allows saving external logics as well as wiring.

The system is scalable for up to 60 feeders (bay units) and a total of 32 busbar zones.

The numerical busbar protection REB500 detects all phase and earth faults in solidly grounded and resistivegrounded power systems and phase faults in ungrounded

systems and systems with Petersen coils.

Main features

Low-impedance busbar protection

· High functional reliability due to two independent measurement criteria:

– stabilized differential current algorithm

– directional current comparison algorithm

· Short tripping times independent of the plant’s size or busbar configuration

· Phase Segregated measurement

· Stub and T-zone protection

· Reduced CT performance requirements

– High through-fault stability even in case of CT saturation

– No switching of CT circuits

Application

RET 670 provides fast and selective protection, monitoring and control for two- and three-winding

transformers, autotransformers, generator-transformer units, phase shifting transformers,

special railway transformers and shunt reactors.

The transformer IED is designed to operate correctly over a wide frequency range in order to accommodate power

system frequency variations during disturbances and generator start-up and shut-down.

A very fast differential protection function, with automatic CT ratio matching and vector group compensation,

makes this IED the ideal solution even for the most demanding applications.

RET 670 has very low requirements on the main CTs, no interposing CTs are required.

It is suitable for differential applications with multi-breaker arrangements with up to six restraint CT inputs.

The differential protection function is provided with 2nd harmonic and wave-block restraint features to avoid tripping for magnetizing inrush,

and 5th harmonic restraint to avoid tripping for overexcitation.

The differential function offers a high sensitivity for low-level internal faults.

RET 670’s unique and innovative sensitive differential protection feature, based on well-known theory of symmetrical components provide best possible coverage for

winding internal turn-to-turn faults.

A low impedance restricted earth-fault protection function is available as complimentary sensitive and fast main protection against winding earth

faults. This function includes a directional zero-sequence current criterion for additional security.

Alternatively a high impedance differential function is available.

It can be used as restricted earth

fault or, as three functions are included, also as differential protection on autotransformers,

as differential protection for a tertiary connected reactor, as T-differential protection for the transformer feeder in a mesh-corner or ring arrangement,

as tertiary bus protection etc.

Tripping from Buchholz and temperature devices can be done through the IED where pulsing, lock-out etc. is performed.

Functions

• Differential protection

– Transformer differential protection, two winding (PDIF, 87T)

– Transformer differential protection, three winding (PDIF, 87T)

– Restricted earth fault protection (PDIF, 87N)

– High impedance differential protection (PDIF, 87X)

• Distance protection

– Distance protection zones (PDIS, 21)

– Phase selection with load encroachment (PDIS, 21)

– Power swing detection (RPSB, 78)

– Automatic switch onto fault logic (PSOF)

• Current protection

– Instantaneous phase overcurrent protection (PIOC, 50)

– Four step phase overcurrent protection (POCM, 51/67)

– Instantaneous residual overcurrent protection (PIOC, 50N)

– Four step residual overcurrent protection (PEFM, 51N/67N)

– Thermal overload protection, two time constants (PTTR, 49)

– Breaker failure protection (RBRF, 50BF)

– Pole discordance protection (RPLD, 52PD)

• Voltage protection

– Two step undervoltage protection (PUVM, 27)

– Two step overvoltage protection (POVM, 59)

– Two step residual overvoltage protection(POVM , 59N)

– Overexcitation protection (PVPH, 24)

• Frequency protection

– Underfrequency protection (PTUF, 81)

– Overfrequency protection (PTOF, 81)

– Rate-of-change frequency protection (PFRC, 81)

• Multipurpose protection

– General current and voltage protection (GAPC)

• Secondary system supervision

– Current circuit supervision (RDIF)

– Fuse failure supervision (RFUF)

Functions

• Differential protection

– Transformer differential protection, two winding (PDIF, 87T)

– Transformer differential protection, three winding (PDIF, 87T)

– Restricted earth fault protection (PDIF, 87N)

– High impedance differential protection (PDIF, 87X)

• Distance protection

– Distance protection zones (PDIS, 21)

– Phase selection with load encroachment (PDIS, 21)

– Power swing detection (RPSB, 78)

– Automatic switch onto fault logic (PSOF)

• Current protection

– Instantaneous phase overcurrent protection (PIOC, 50)

– Four step phase overcurrent protection (POCM, 51/67)

– Instantaneous residual overcurrent protection (PIOC, 50N)

– Four step residual overcurrent protection (PEFM, 51N/67N)

– Thermal overload protection, two time constants (PTTR, 49)

– Breaker failure protection (RBRF, 50BF)

– Pole discordance protection (RPLD, 52PD)

• Voltage protection

– Two step undervoltage protection (PUVM, 27)

– Two step overvoltage protection (POVM, 59)

– Two step residual overvoltage protection(POVM , 59N)

– Overexcitation protection (PVPH, 24)

• Frequency protection

– Underfrequency protection (PTUF, 81)

– Overfrequency protection (PTOF, 81)

– Rate-of-change frequency protection (PFRC, 81)

• Multipurpose protection

– General current and voltage protection (GAPC)

• Secondary system supervision

– Current circuit supervision (RDIF)

– Fuse failure supervision (RFUF)

Features

• A protection, control, and monitoring IED with extensive functional library and configuration

possibilities and expandable hardware design to meet specific user requirements

• For power transformers, autotransformers, shunt reactors, T-protection, generator transformer

blocks, phase shifting transformers and small busbar systems

• For two- and three-winding transformers with up to six stabilized inputs

• For multi- or single-breaker arrangements

• Transformer differential protection with:

– Percentage bias restraint for through faults

– Waveform and Second harmonic restraint for transformer inrush

– Fifth harmonic restraint for overexcitation

– High sensitivity for interturn faults

• Restricted earth fault protection for all direct or low impedance earthed windings

– Extremely fast operation

– High sensitivity

– High and low impedance based

• Full scheme phase-to-phase and phase-to-earth distance protection with up to five zones:

– Load encroachment feature

• Instantaneous high speed short circuit function with low transient overreach

• Directional overcurrent protection with four steps for each winding

– Each step can be inverse or definite time delayed

– Each step can be directional or non-directional

• Instantaneous high speed earth fault function with low transient overreach

• Directional earth fault protection with four stages for each winding

– Each step can be inverse or definite time delayed

– Each step can be directional or non-directional

– Each step can be blocked on second harmonic component

• Synchrocheck function for single- or multi-breaker arrangements:

– Selectable energizing direction

– Two functions with built-in voltage selection

• Selectable additional software functions such as

breaker failure protection for each breaker, voltage protection, overexcitation protection, control and monitoring

• Tripping from Buchholtz, temperature devices etc. through binary inputs stabilized against capacitive discharges

• Built-in data communication modules for station bus IEC 61850-8-1

• Data communication modules for station bus IEC 60870-5-103. LON and SPA

• Integrated disturbance and event recorder for up to 40 analog and 96 binary signals

• Time synchronization over IEC 61850-8-1. LON, SPA, binary input or with optional GPS module

• Analog measurements accuracy up to below 0.5% for power and 0.25% for current and voltage and with site calibration to optimize total accuracy

• Versatile local human-machine interface

• Extensive self-supervision with internal event recorder

• Six independent groups of complete setting parameters with password protection

• Powerful software PC tool for setting, disturbance evaluation and configuration

• Remote end data communication modules for C37.94 and G.703

Main advantages

• Devices can be used for a wide range of applications
• Ranging from simple protection devices as back-up protection to specialised protection devices
• Well-established and modern technology
• Arc detection as an option
• The REF620 is a member of the 620 Protection, Measurement and Control product family within the ABB Relion® product family.
• Key benefits
• Protection, control, monitoring and management integrated in a single relay provides a compact and versatile solution for public and industrial power distribution systems
• Wide range of protection and control functions, either with sensors or conventional CTs and PTs
• Functional scalability and wide range of applications allow users to easily customise configuration applications to meet specific requirements
• Pluggable design for quick installation and testing
• Large LCD screen with single-line graphic display, accessible locally or via an easy-to-connect and navigate HMI
• Thoughtful product lifecycle service
• Key Features
• Wide range of protection and control functions for incoming or outgoing applications
• Multi-frequency conductive earth protection package with high sensitivity and selectivity
• Advanced and fast short-circuit and earth-fault location functions
• Several optional function packages – for distributed generation, capacitors, basic motor and arc-light protection
• Supports IEC61850 Version 1 and 2, including redundant HSR and PRP, GOOSE and IEC61850-9-2
• Supports Modbus, DNP3, IEC 60870-5-103 communication protocols and different time synchronisation methods, including IEEE 1588 v2 precision time protocols

The OCAH 940181103 is a high-performance processor unit designed for the System 800xA distributed control system.

The OCAH 940181103 processor unit has the following key features:

High performance: Equipped with a powerful multi-core processor and a large amount of memory, it can handle multiple tasks together and process large amounts of data quickly to meet the needs of various industrial control applications.

High reliability: The processor has built-in redundancy to ensure high system availability and reliability even in the case of hardware defects.

Communication talent: Supporting various communication protocols such as Ethernet, Profibus and Modbus, it is convenient to communicate with various I/O modules and other device interfaces.

Diagnostics and Defect Cleanup: The processor unit features advanced diagnostics and defect cleanup functions, including comprehensive work logging

and a built-in Web server for remote access and monitoring, helping to quickly identify and address potential problems.

940181103 OCAH processor units are used in a wide range of applications in oil and gas, power generation, chemical processing, electrical power systems, metal processing,

Food and Beverage, Pharmaceutical, Paper, Textile, Automotive, Railroad, and Marine jobs to meet the needs of chaotic control and automation applications.

Please note that product parameters and features may be updated due to changing skills and market conditions.

The counter of the ABB OCAH 940181103 has three inputs count, reset and set value; and two outputs-complete value and current value.

A count input is required to provide a counter for counting pulses, a resetinput is required to reset the counter, and a set value is required to provide a set count for the counter.

The done output is used to indicate that the counter has finished counting, and the Current Value shows the current value that the counter has counted so far.

Contrac – Electric Actuators

Introduction

The water injection valve on a steam boiler controls the amount of cooling water injected into the superheated steam in the superheater and reheater.

The amount of water injected is decisive for the temperature of the steam inside and at the output of the superheater.

Too much water injection can lead to excessive cooling of the steam, which negatively affects efficiency.

On the other hand, insufficient water injection leads to excessive steam temperature and pressure.

The risk of damage to the superheater, turbine and downstream components increases as a result.

For optimal operation of the superheater at the lowest possible steam temperature and the highest possible hot steam temperature, the

continuous and precise mass flow control of the injected cooling water is first required.

Depending on the operating conditions, this requirement means that very small amounts of water need to be supplied, thus requiring highly accurate positioning in disproportionate areas of the valve.

The operating environment is extremely harsh.

In addition, the ambient temperature in the superheater area can be very high.

Measurement made easy

To run any process efficiently, measurement, execution, recording and control are essential,

Record and control. By choosing ABB, you are choosing a partner that can provide the best measurement and analysis solutions for your needs.

thereby maximizing the return on your investment. When you invest in ABB’s measurement and analysis solutions, you get the best technology, reliability and service in the industry.

R&D is a key source of ABB’s technological leadership.

ABB is constantly developing new applications based on existing technologies and continues to develop the breakthrough technologies needed to meet the challenges of the future.

ABB is constantly developing new applications based on existing technologies and continues to develop the breakthrough technologies needed to meet the challenges of the future.

Comprehensive measurement solutions Tailored to each industry

ABB’s measurement and analytics products provide world-class measurement solutions for any industry, utility or municipality. Latest

Innovations provide technical solutions that make running your plant easier.

ABB’s measurement and analysis products are based on universal technology, offering a common look and feel and method of operation. As a result, products are easy to configure, easy to integrate and easy to maintain.

ABB’s measurement and analysis portfolio

– Analytical Measurement

– Flow measurement

– Pressure measurement

– Temperature measurement

– Level measurement

– Actuators and Positioners

– Recorders and Controllers

– Device Management, Fieldbus and Wireless

– Force Measurement

– Services