Category: ABB

Synchronisation indicator is on, it means that the two power sources are in synchronised state and parallel operation can be carried out; if the synchronisation indicator is not on, the two power sources are in unsynchronised state, then the circuit breaker will start safety blocking.

At this time, the executive circuit breaker starts safety blocking, and the switch can not execute the closing command in parallel operation mode to ensure the safety of the line.

Alarm Indication: The alarm indicator lights up when abnormal release occurs in the line.

Communication function: After installing communication module, the circuit breaker can have communication function, which can realise remote communication and intelligent control.

Other auxiliary functions

– RTC real-time time

– Key lock function

– Fault locking function

– Event record function

– Alarm function

The system can be fitted with control buttons and mode changeover switches mounted separately on the instrumentation door of the switchboard cabinet.

Manual/automatic/parallel switching is achieved by means of a mode switching button.

The system can be switched automatically according to a predefined procedure or switched to manual mode to exit automatic operation.

In the event of planned maintenance or power failure, manual parallel switching of the power supply is also possible to ensure that important loads are not interrupted by the switching process, thus ensuring continuity of the power supply.

Measurement functions

The Emax 2 Ekip Touch is equipped with a measurement module, which automatically collects and measures the status and parameters of the power supply and displays them visually on the circuit breaker’s LCD screen.

Status indication

The Emax 2 Harness system can also be equipped with a status display function to show the operating status of the system to the user, which is convenient for on-site management.

Voltage Status Indication: The line voltage status of power supply 1/power supply 2 can be indicated by the LEDs. If the power supply voltage status is normal, the indicator light will be always on; if the voltage is abnormal (under/over-voltage), the indicator light will not be on.

Circuit breaker status indication: The status of power supply 1/power supply 2 (normal/abnormal) and the status of CB1/CB2/CB3 actuating circuit breakers (bright – closing; non-bright – opening) are visually displayed in the form of a single-line diagram of the system.

ABB is reinventing the way digital systems are embedded to help customers realise more efficient, safe and stable power system solutions.

Efficient and simple control systems: smart circuit breakers with integrated embedded logic for shorter changeover times.

Simple connectivity: no need for a separate external controller for the circuit breaker, eliminating the need for complex wiring to external protection devices.

Higher Reliability: Ekip release provides a wide range of circuit breaker protection to ensure higher reliability. In the event of a fault, local and remote alarms can be realised, so that faults can be dealt with quickly.

The Emax 2 Harness automatic double power conversion system is equipped with power supply voltage and frequency detection functions.

In addition to the conventional conversion function, it also provides the closed-loop control function (parallel conversion) required by power plants and industries.

This ensures uninterrupted power supply for special applications and brings new solutions for power electronics, semiconductors, airports, petrochemicals, data centres and other industries.

Control Functions

The Emax 2 Harness dual power conversion system comes standard with the Touch intelligent tripper, which not only provides full mains circuit protection, but also supports multiple power sources.

switching functions:

– Automatic switchover – self-recovery – no self-recovery

– Manual changeover (not in parallel)

– Parallel switchover

Emax 2 Harness automatic double power conversion system

Intelligent and efficient

New third-generation technology – Emax 2 Harness dual power conversion system

– Embedded control system for more efficient power switching

– Intuitive user interface and user-friendly human-machine interaction

– Comprehensive safety features

The Emax 2 Harness dual power conversion system is designed for ‘two inlets and one busbar’ power supply lines.

Using ABB’s latest third-generation circuit-breaker power conversion solution, the Emax 2 Harness eliminates the need for a traditional external stand-alone controller.

Emax 2 Harness can be directly through the intelligent off-trigger embedded logic to achieve efficient cooperation between the circuit breaker control, while supporting a variety of control modes, wiring, and so on.

The Emax 2 Harness supports multiple control modes, simple wiring, high reliability, shorter changeover times and intuitive control.

Emax 2 Harness is a high-performance automated power conversion system on the Emax 2 Ekip intelligent protective circuit breakers.

It provides safer and more reliable power switching without the need for additional control equipment, whilst providing circuit protection.

In industrial and power applications where efficiency and performance are delivered through digital communications, ABB is reinventing the way digital systems are embedded to help users achieve more efficient, safe and reliable power conversion.

Ekip 10K Signalling Module

The Ekip 10K signalling module is a DIN rail mounted external signalling unit for Emax 2 circuit breakers.

It is supplied with 10 pairs of contacts and is used to provide electrical signalling for the timing and release of protective arresters.

These contacts can be freely configured with any event or alarm, or a combination of both, if the Ekip Connect software is connected.

Several Ekip 10K signalling modules (up to 3) can be installed in the same Ekip tripper.

The Ekip 10K signalling modules can be supplied with DC or AC power and can be connected to all the release units via the internal bus or via the Ekip Link module.

Ekip Synchronisation Module This module is used to control the synchronisation conditions of two parallel lines.

The Ekip Synchronisation Module measures the output voltage of the two phases of a line via an external transformer and compares it with the voltage measured at the circuit breaker.

An output contact can be used, which is activated when synchronisation is achieved and closes the circuit breaker by wiring to the closing coil.

With the Ekip Com communication module, both Emax 2 circuit breakers can be integrated into an industrial communication network for remote monitoring and control of the circuit breakers.

The module is suitable for all Ekip Touch and Hi-Touch circuit breakers for power distribution and generator protection.

As they are mounted in the terminal box, communication can be maintained via the draw-out circuit breaker even in the swing-out position.

Several Ekip Com modules can be installed at the same time and can therefore be connected to communication systems with different protocols.

Ekip Com modules for Modbus RTU, Profibus-DP and DeviceNet™ contain selectively activated terminating resistors and dip switches.

Ekip 2K Signalling Module

The Ekip 2K signalling module is supplied with 2 input and 2 output contacts and can be used to remotely control and indicate alarm messages and circuit breaker tripping.

It can be programmed via the tripper’s display or via the Ekip Connect software.

In addition, the combination of events can be freely configured when using Ekip Connect.

The module is suitable for all Ekip Touch and Hi-Touch circuit breakers for distribution and generator protection.

Three versions of the Ekip 2K signalling module are available: Ekip 2K-1. Ekip 2K-2 and Ekip 2K-3.

E2.2. E4.2 and E6.2 can be fitted with up to 3 modules simultaneously; E1.2 can be fitted with up to 2 modules simultaneously.

Ekip Com modules for Modbus RTU, Profibus-DP and DeviceNet™ include selectively activated termination resistors and dip switches for terminating serial networks or buses. Profibus-DP also contains polarisation resistors and dip switches to activate it.

Ekip Com modules are supplied with position indicating auxiliary contacts Ekip AUP and circuit breaker ready contacts Ekip RTC.

For industrial applications requiring higher reliability of the communication network, redundant connection to the network is ensured by the Ekip Com Redundant Communication Module, which is installed together with the corresponding Ekip Com module.

Function Modules

Ekip Power Modules

The Ekip Power Module supplies power to all Ekip striker and modules present on the terminal box and circuit breakers from multiple auxiliary power sources (AC or DC) available in the switchgear.

The Ekip Power Module supplies power to all Ekip strippers and modules present on the terminal box and circuit breakers.

The module is mounted in the terminal box to allow installation of other advanced modules.

It can be installed in the field at any time.

Two versions are available depending on the control voltage:

– Ekip Power Module (110-240V AC/DC)

– Ekip power modules (24-48V DC)

Actuating circuit breakers

The Emax 2 Harness double-conversion system allows the choice of ABB Emax 2 actuating circuit breakers depending on the application.

This includes different types of circuit breakers, different rated currents, different breaking classes, different Ekip intelligent circuit breakers and different numbers of poles;

A wide range of accessories can be added as required, allowing for a customised power conversion solution.

The Emax 2 Smart Tripper also contains an internal electrical interlock circuit to ensure the safety of the power supply.

It contains the following

Electrical interlocking function:

– The controller has an embedded logic lock to avoid incorrect closing/closing signals;

– No parallel operation during automatic changeover, the three switches cannot be closed in automatic mode;

– Manual key changeover for ‘non-parallel operation’ ensures no parallel operation and operation, even after partial disconnection of the control line, with safety interlocks to ensure safety.

Optional accessories

The Emax 2 Harness Dual Switching System actuating circuit breakers can be supplied with a wide range of optional accessories.

– Mechanical interlocks

– Opening position locking

– External transformer for earth fault protection

– Communication modules

ABB Connect Your one-stop digital assistant

With the ABB Connect app, you can access and share ABB Electric data and information anytime, anywhere;

Online customer service is available 24 hours a day, 7 days a week to answer your questions – your one-stop digital assistant at your fingertips.

Self-throw without self-recovery

When one of the two power supplies fails, it will automatically disconnect and switch to the other one to supply power to the load.

When the faulted power supply returns to normal, it is necessary to select the self-recovery button or operate manually to return to the state of ‘CB1 closing/CB3 opening/CB2 closing’.

Manual switching of operating modes (non-parallel)

The Harness system can also be operated manually via the control panel, which allows manual control of the CB1 closing/ CB3 opening/ CB2 closing by means of the closing and splitting buttons.

The manual mode of operation is a ‘non-parallel’ mode, which supports electrical interlocking to prevent manual operation. At the same time, it supports the function of disconnection blocking, which guarantees the safety of the power supply system.

The power supply system is safe and secure. The parallel switching mode is used for planned maintenance or power failure of the incoming power supply line.

The CB1/CB2 is operated in the form of a ‘close first, split second’ mode to ensure that there is no interruption of power supply during the conversion process.

(The parallel connection time of power supply 1/2 is not more than 200ms.) At the same time of parallel connection operation, the synchronisation verification module detects the synchronisation condition of the two power supplies.

If the two power supplies are in the synchronous state, the synchronous indicator will light up automatically, and you can enter the manual parallel conversion operation;

If the conditions for parallel connection are not sufficient, the synchronisation indicator goes out, the circuit breaker automatically locks the closing function of the mother switch, and the parallel conversion operation cannot be completed.

Conversion Function

Automatic Operating Mode

The Harness system can be put into automatic conversion mode by using the operating mode selection button on the operation panel.

In the automatic conversion mode, the system will automatically detect the two power sources and judge whether the two power sources are normal or not.

When one of the power supply fails, the system will carry out automatic power conversion; at the same time, in order to adapt to the fluctuation of the power grid, the conversion process can support the action delay setting.

Self-input and self-recovery

When one of the two power sources fails, the system will automatically disconnect and switch to the other one to supply power to the load.

When the faulty power supply returns to normal, it will automatically return to the state where the two power supplies are powered separately.