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ATS for a generator: device, principle of operation, connection diagrams. Automatic reserve input - what is it and how to choose the right one? Automatic control of the gas generator

LLC "Independent Energy Systems" has been manufacturing based on controllers for many years own production. The controller includes high quality components, which determines the high reliability of our ATS units.

The ATS unit of the electric generator includes:

Controller board for autostart and automatic input of a reserve of an electric generator of our own production.
Power keys (contactors)
Charger for charging the battery of the electric generator.
Switches for selecting the operating modes of the block.
Emergency stop mushroom button.

Main functions

Security full cycle of work electric generator: automatic start of the generator in case of main input voltage transmission, or main input voltage out of the set range; burst of the electric generator and connection of consumers; control of work of the electric generator, protection against an overload; cooling and shutdown of the electric generator when the voltage of the main input appears.
Selection of the type of redundant network: single-phase network - single-phase electric generator, three-phase network - single-phase electric generator, three-phase network - three-phase electric generator.
Work with gasoline, diesel And gas power generators.
Control of the air damper actuator (solenoid with return spring, DC motor) of gasoline and gas power generators.
electric generator (option).
Monitoring the voltage of the batteries of the uninterruptible power supply (UPS). Starting the generator when the battery of the UPS is discharged.
test weekly generator start, at the set time and day of the week.
Economy mode operation of the generator (the operating time and the downtime of the generator are set)
Hour meter and time-to-maintenance meter
Built-in event log and alarm log with date and time.
Connection to a PC for reading/changing parameters and operating modes of the automation unit.
Extending functionality by installing additional modules: , .

Summary table of characteristics


Max. power of the three-phase network/generator	up to 15kW	up to 30kW	up to 30kW	up to 30kW	up to 30kW
Max. power of a single-phase network / generator	up to 7.5kW	up to 15kW	up to 15kW	up to 15kW	up to 15kW
Voltage, V	220/380	220/380	220/380	220/380	220/380
Maximum switched current, A	32	63	63	63	65
Contactor manufacturer	IEK	KZE Kashin	KZE Kashin	KZE Kashin	Shneider Electric
Charger	yes, up to 5A	yes, up to 5A	yes, up to 5A	yes, up to 5A	yes, up to 5A
Built-in bypass	Yes	Yes	Yes	Yes	Yes
Integrated display	No	No	No	Yes	No
Built-in GSM modem	No	No	No	No	Yes
Weekly test run	Yes	Yes	Yes	Yes	Yes
Work-rest mode	Yes	Yes	Yes	Yes	Yes
Hour meter, time to service	Yes	Yes	Yes	Yes	Yes
Engine temperature control	Yes	Yes	Yes	Yes	Yes
UPS Battery Monitoring	No	No	Yes	Yes	Yes
Connect to PC()	Yes	Yes	Yes	Yes	Yes
Connecting an external display()	Yes	Yes	Yes	Yes	Yes
Installation	Yes	Yes	Yes	Yes	No
Dimensions (WidthXHeightXDepth), mm	400x400x155	400x400x155	400x500x155	400x500x155	400x500x155
Weight, kg	15	19	25	25	25
Degree of protection	IP31	IP31	P31	P31	P31

Distinctive features

	The block includes high-quality power switches (contactors) with mechanical and electrical protection against countercurrents of Russian production.
	A powerful generator battery charger has been installed.
	The ability to control the temperature of the crankcase of the engine of a gasoline generator in order to control the air damper depending on the temperature of the engine, warm up the engine of the electric generator before connecting consumers, protect the engine from overheating.
	Possibility to install a GSM modem. Thanks to it, it becomes possible to remotely start / stop the electric generator via SMS messages, control the operating mode of the unit, read telemetry data (voltage by phases, engine hours, time to maintenance, battery charge, etc.), configure ALL parameters and constants of the ATS block(number of start attempts, start delays, genset shutdown, weekly test run time, etc.)
	Possibility of connecting the unit to a personal computer via RS485 interface for setting parameters and constants, reading current measurements, etc.
	Built-in bypass. In the event of a failure of the control controller, it is possible to manually start the generator and switch consumers to the backup line in case of a mains failure.
	Forced start / stop of the electric generator by the User from the toggle switch on the ATS unit.
	Mushroom "Emergency stop". Forced shutdown of the generator in case of an emergency situation from the ATS unit.

AVR - Automatic switching on of the standby generator.

In previous articles, we have examined in sufficient detail the various types of autonomous sources of electricity, namely, UPS (uninterruptible power supplies on batteries) and GU-generator sets.

Almost all such devices work on the same principle, they differ only in functionality, build quality and components, and, accordingly, in price.

Algorithm of operation of AVR-automatics for the generator:

1) Voltage monitor on the main line

2) When the main electricity is turned off, the generator starts

3) Warming up the generator

4) Switching the load on the GU (generator set)

5) When electricity appears on the main line (from the city), the load is switched to the city

This is roughly how it works simple ATS, which is designed for a simple start-stop generator station.

But there are also more modern models of devices. The functionality of such devices is quite wide. All of them are built on modern programmable processors. Such automation controls not only the presence of voltage in the network, but also its nominal value, according to the upper and lower limits, according to the voltage difference between the phases. In case of going beyond the permissible parameters, a switch to the GU also occurs.

There are models of AVRs that can be programmed independently, set the necessary parameters for the normal and correct operation of the generator.

For example, for some generators, 20-40 seconds are enough to enter the normal operating mode, while others go into normal mode after 3-5 minutes.

And, besides, the operation algorithm, the control of diesel and gasoline power plants is slightly different. All this together requires additional settings.

More modern AVR models allow you to control the operation of the generator remotely via the Internet.

Almost all domestic power plants, and it is this segment of the stations that we are considering, operate from one refueling of about 7-9 hours. But, if there is no one at home at the time of the power outage, then for the sake of one refrigerator or gas boiler it is not entirely rational to “drive” a generator that “eats” 3-4 liters of fuel per hour.

In order to increase the battery life of the generator from one refueling, some models of automation have an economical mode of operation.

This mode, depending on the settings, allows the generator set to operate at certain intervals, for example, it is set to work in three hours. That is, the station works for an hour, rests for three. During this time, the refrigerator will not defrost, the house will not cool down. Accordingly, the operating time from one refueling increases significantly.

In addition to saving fuel, the engine life of the station is also significantly increased, which is also important.

In conclusion, I would like to note that the use of high-quality automation greatly simplifies the operation of the generator, allows almost anyone to control the work on the generator.

When choosing automation for a mini power plant, we advise you to contact specialized organizations-firms, companies that sell, install and assemble automation. It is desirable that this company is located with you in the same city-region, so that in case of malfunctions they can fix the problem as soon as possible.

After the installation of automation, it is desirable to draw up an act of work performed, which will spell out the main obligations of the parties. In the future, in the event of a dispute, this document will greatly facilitate the solution of problems.

Sergey Seromashenko

Price: 6 000 rub.

Available: 1.00

Allows you to make an electric generator with automatic start from any generator with an electric starter.

Description

The BAZG-1 generator automatic start (autostart) block is designed to start the generator engine on command, remotely, without human intervention and is an inexpensive solution for building backup power supply systems in the event of a power failure in the main network.
The auto start unit will start and stop the generator engine as needed.
The unit makes 5 start attempts with an interval of 5 seconds start, 15 seconds break when
by controlling the air damper.

The BAZG-1 generator automatic start unit is part of the automatic backup power supply system. The unit is designed to start and control the operation of the generator engine on command from an external source (toggle switch, radio channel, gsm-modem, avr shield, inverter). For a full-fledged power grid redundancy system, it is necessary to purchase a switchboard to the reserve - ATS. Our unit works with any type of ATS.

We recommend specialized . It may contain additional functions: the possibility of a test run of the system, setting time delays for starting and warming up the engine, a digital voltmeter, a charger.
It is possible to work in systems with an inverter to start the generator with subsequent recharging of the battery.

To start, it is necessary to have one free normally closed "dry pair" of contacts on the contactor in the ATS or inverter or inverter battery monitor, when closed, the generator will start.

Degree of protection of the shell IP54 (protection against dust and moisture).

The autorun block will be simply indispensable if you decide to assemble a generator autorun system with your own hands. You can assemble the power part of automation (AVR) yourself, and it is better to take the engine start module ready-made.

It is possible to operate the BAZG-1 generator automatic start unit in systems with an inverter to start the generator with subsequent battery recharging.

The unit makes 5 attempts to start the generator while controlling the air damper.
The start occurs when two contacts are closed on the BAZG-1 block, the generator stops when it is opened.

In case of unsuccessful start, the unit goes into the EMERGENCY mode.
Exit from the "EMERGENCY" mode occurs either when the power is removed from the unit, or
when the "START" command is removed or when the "RESET" button on the unit is pressed.

Specifications

Supply voltage of the automatic start unit - 12V DC
Current consumption in standby mode - 5mA
Number of attempts to start the generator - 5
Generator starter rotation time - 5 sec.
Pause between attempts to start the generator - 15 seconds.
Generator cooling time before engine shutdown - 30 sec.

What's new in the model:

Simple connection to the generator: +12V, -12V, starter, oil sensor (all wires included!)
Work with different carburetor damper electric drives
Determining the operation of the generator by the presence of voltage (input 220v, for diesel generators)
Determining the operation of the generator by pulses from the ignition coil
Choice of delay before start 2/10 seconds
Possibility to select the operation algorithm of the carburetor damper electric drive (even-odd, odd-even *)

*even - every even start with a closed damper, odd - every odd start with a closed damper.

Light indication on the board:
Power supply for the generator autostart unit
Job
Accident
Duplication of block outputs by light indication (ignition, solenoid, starter, damper opening, damper closing)

Completeness:

BAZG-1-02 generator start block - 1 pc.
Damper actuator TYPE1 - 1pc
Set of wires - 1pc
Wiring diagram - 1pc
Device passport - 1 pc

Connection

Installing the auto start unit on the generator is a simple procedure, but it must be carried out by a specialist (electrician).

The automation unit itself can be installed on the generator frame or on the wall, next to the generator.

The procedure for installing an autostart unit on a generator is similar to installing a car alarm.

The installation is carried out without changing the standard wiring of the generator and takes from 10 minutes to an hour (with coffee breaks :).
We have prepared all the necessary wires for connection.

Wiring diagram BAZG-1-02

Taking advantage of the illiteracy and gullibility of buyers, many sellers of switchboard and power generating equipment often sell low-quality or frankly dangerous automatic start units. Thinking about buying a generator with automatic equipment? Then this article is for you!

What is ATS (Auto Transfer Transfer)?

Let's first understand what this abbreviation is. In the language of electrical engineering, this A automatic IN water R reserve. And in the language of consumers, it is an automatic switch from the main network to the power plant and back. Its principle of operation is simple. One of the main elements of such a switch is the so-called contactor group. These are contactors, and in the language of consumers, this is an element that monitors whether there is "light" or not. And after the disappearance, the contactors signal this to the "brains". The brains here are called the controller. And he, in turn, gives out commands further, switches to power from the generator and starts it. Well, when the main network appears (they gave light!), The controller switches back to the network and turns off the electrical installation. That's the whole job of the automatic switch. There are also advanced features, but about them later.
So, we got acquainted with the principle of operation of the cabinet, now it's time to talk about what you need to rely on when choosing automation, so as not to make trouble for yourself in the future. When buying a generator, many do not pay attention to automation for a power plant, but in vain. Because, as our chief engineer says, bad automation begins to hum in six months, warm up in a year, and there it’s not far from a fire. This is serious stuff, so jokes aside.

How to choose automation for a generator?

There are two types. Description:

1. Box with contactors. For industrial type power plants (1500/3000 rpm liquid cooled) with an automatic panel, a full shield is not required. Everything is already in the generator itself. Controller, circuit breakers, etc. And therefore, as a rule, a box with contactors and an emergency shutdown button is supplied to such power plants. I don’t see the point in writing this type especially, the main thing is that the contactors are not Chinese, and there is an emergency shutdown button for the electrical installation.

2. Full ATS shield. It is placed on portable equipment with a manual panel.
This is what usually becomes the subject of deception. Basically, this product does not meet the requirements for such products, but for which they ask for "good" money.

IMPORTANT!

Not automatic at all. Some sellers give out various kinds of products for an automation unit. For example, on the Internet you can find automation for 8-12 thousand rubles, or even 3500! But unfortunately, miracles do not happen, at least in the market of switchboard equipment .. What is this if not an automatic start unit? What you can find for 12 thousand (note that this is only a kit for Chinese electrical units) is nothing more than a parody of power plant control, it all connects with a special Chinese connector directly to the panel and does not have any real automation functions, but this is not the most important. The generator is controlled from such a unit not with the help of electromechanical elements, which are designed for very long operation and overload, but with the help of electronic components. This is the main danger. With a strong power surge, such "automatics" will not instantly turn off the network so that the refrigerator, TV, as well as the wiring do not burn out, but simply burn itself out. The same applies to "automatic devices" for 5500 rubles, where a fee is frankly placed, and the function of switching off and on is implemented using electronic components according to the "low current" principle. The irresponsibility and greed of such producers is striking. This will not only not work, it is simply simply dangerous. The average market cost of a full-fledged automatic transfer of the reserve is now 30-40 thousand rubles for 25-63 amperes.

Automation without a controller. The sale of a much cheaper version of the AVR is widespread. What does it mean? This means that the automation for the electric unit will be real, working, but there will be no part of the controls. For example, there will be no controller. Is it bad? Yes! The control parameters of the electrical installation are entered into the controller. This means that there is no shutdown due to low and high voltage, there is no check of the parameters of the power plant, fixing events, errors, which are then used for diagnostics - all this is not available! Do you want to know how the operation will look like? There will be 1 or 2 LEDs, and the instructions will say: blinked once, then that, blinked 2 times, another, blinked 2 times with a delay, the third. The master, who comes to you, either refuses to study this buffoonish system or, swearing loudly, asks for a higher payment.

So which AVR should you buy?

1. ABB/Schneider Electric contactors are installed in the unit.

2. The board is equipped with a DATAKOM/DeepSea controller.

3. On the front panel of the shield it has: an emergency shutdown button, an ammeter, a voltmeter, a light indication network / generator, a switch to manual mode, manual mode control.

4. If the unit is installed outdoors, the cabinet must have IP44-65 protection.

5. Elements inside the cabinet must be marked according to the scheme.

6. The cabinet must be supplied with an instruction manual with an ATS diagram.

Demand all of the above from the seller and the automation for the electric generator will not be an annoying factor for you, but a pleasant addition to the power plant....

Static thyristor excitation systems DExS.GEN are designed to power the excitation winding of generators up to 60 MW with automatically regulated current in all operating modes. Performs the functions of control, protection, indication of operating modes of the excitation system.

Excitation systems DExS.GEN are thyristor exciters with direct digital control, manufactured on a modern element base. Excitation systems meet the requirements of GOST 21558-2000 and have advanced service functions that facilitate setup and operation.

General information:

DExS.GEN excitation systems can be made as a single-channel version or with redundant control system and power section. For systems with redundancy in The activation of the backup channel (in the event of a malfunction of the main channel or at the command of the operator) occurs “impact-free”, without affecting the operation of the generator.

Excitation system design:

Structurally, the excitation system is made in one metal cabinetone-way service with IP22 protection degree (on demand - IP31, IP54).

The excitation system cabinet contains:

Power circuit protection devices;
Devices for protection of control circuits;
Microprocessor-based excitation controller (for two-channel systems - two independent excitation controllers);
Thyristor converter (for systems with redundant power section - two independent thyristor converters);
Starting resistors with thyristor key;
Power backup circuits for control circuits;
Controls and indications on the front door of the cabinet.

Contents of delivery:

The excitation system kit includes*:

Control cabinet;
Entry cabinet;
Thyristor converter cabinet;
Field extinguishing cabinet;
Cabinet for input of working and reserve excitation;
Converter transformer;
Rotor protective resistance;
Switching cell for converter transformer;
A set of technical documentation in Russian: passport, technical description and operating instructions, a set of diagrams and drawings, a description of the service software (on electronic media);
Electronic media with documentation and service software;
Spare parts kit (composition according to the technical requirements of the Customer);
Digital complex for setting up maintenance of the STAT excitation system with a laptop.

*Depending on the parameters of the excitation system and the requirements of the Customer, the composition of the equipment included in the delivery may be changed. The exact set of delivery is indicated in the passport for the product.

Operating modes of the excitation system:

The excitation system provides:

Initial excitation up to a given setting from a source of operational direct current = 220 V or an auxiliary network of 0.4 kV 50 Hz.
Generator idle.
Automatic adjustment of the generator voltage to the mains voltage with an accuracy of ± 0.5% to ensure inclusion in the network using the fine synchronization method.
Autonomous and parallel operation with the power system and loads and overloads allowed for the generator.
Unloading the generator in terms of reactive power to a value close to zero during normal shutdown of the unit.
Rapid extinguishing of the generator field by transferring the operating thyristor rectifier to the inverting mode during a normal stop of the generator and during an emergency shutdown of the generator, provided that the thyristor rectifier is in good condition.
In the event of an emergency shutdown of the generator, the field damping is additionally ensured by the forced input of damping resistances into the winding circuit.
Automatic and manual control mode.
The transition from automatic mode to manual mode and vice versa is carried out without shock.
The transition from the main regulator to the backup one and vice versa is carried out without shock (for two-channel excitation systems).
Automatic bumpless transition from the main thyristor converter to the backup one (for excitation systems with redundant power section).
The main mode of operation of the regulator is to stabilize the generator stator voltage with reactive current droop.
Forcing excitation with a given multiplicity of voltage and current in case of disturbances in the power system, causing a decrease in voltage on the station buses.
Limitation of the forcing excitation current value of the exciter at a given level and duration.
Exciter excitation current overload limitation.
Restriction of the minimum excitation according to the given diagram of admissible modes.
Issuance of operational and emergency alarms.
Excitation shutdown automatically when the generator circuit breaker is turned off by the protection of the excitation system or generator.
Local or remote change of the voltage setting in the range from 80 to 110% in the automatic mode of the regulator and from 0 to 110% in the manual mode, relative to the rated voltage of the generator.
Voltage support at the generator outputs with an accuracy of at least ±0.5% relative to the set static characteristic (with a given setting).

Excitation system protection

The excitation system provides the following types of protection:

From loss of excitement;
From increasing the generator stator voltage in idle mode;
From a decrease in the frequency of the generator stator voltage in idle mode;
From exceeding the limiting excitation current of the exciter;
From a malfunction of the thyristor rectifier control channel;
From short circuits at the output of the converter;
Against excitation current overload;
From a decrease in the insulation resistance of the excitation winding.

The parameters and setting range are given in the technical documentation for the excitation system.

Protection operation is shown on the display, recorded in the controller's event log, fixed on the output relays and transmitted to the protection circuit in the form of a discrete signal or via a digital interface.

Network synchronization (option)

By agreement with the Customer, the exciter can be equipped with a synchronization device with the network, while ensuring:

Automatic synchronization
Manual Fine Timing

Automatic and manual fine synchronization is available for both local and remote control. Additionally, to ensure the synchronous inclusion of the generator in the network, a synchronism control relay is built into the synchronoscope, the output signal of this relay is connected in series with the signal to turn on the mains switch.

Telecontrol (option)

The exciter has the possibility of remote control. Telecontrol is control carried out by operational personnel from a remote control point node or by dispatching personnel from a dispatch center using a coded signal transmitted via communication channels.

By means of telecontrol, the excitation system can receive the following commands:

Increase setting;
Reduce setting;
Turn on excitation;
Disable excitation (quenching);
Enable regulation by Ug (generator voltage);
Enable Q control;
Switching regulators from the main to the backup and vice versa;
Reset protections;
Enable offline mode;
Switch on the manual mode of the regulator;
Disable manual mode (enable automatic mode) of the controller.

If necessary, the scope of commands is agreed with the Customer at the detailed design stage. Telecontrol can be organized using specialized network cards using the MODBUS RTU, MODBUS TCP / IP, PROFIBUS DP protocols (RS485 and Ethernet interfaces) as agreed with the Customer.

The excitation system provides all the necessary measurements and information exchange with the APCS of the station level and interaction with the systems of the aggregate level, including: measurement and output of signals on the current and voltage of the generator stator, excitation circuit, as well as the frequency of the generator to the main control room and to its own front panel, while communication with the APCS of the station and the aggregate level via the RS485 serial interface and (or) Ethernet is provided. The type of protocol, type of interface and the amount of necessary information transmitted to the ACS must be negotiated separately with each Customer at the detailed design stage.

Discrete signals

Discrete signals about the state of technological equipment are output in the form of binary signals "0" "1". In this case, voltages of alternating current 220V, direct current 220, 48, 24V can be used as a signal "1". I/O channels of analog and discrete signals are galvanically separated from each other and relative to the ground.

Excitation control system

The excitation control system performs automated control of the excitation system devices, providing control functions for the equipment of the excitation system.

The generator excitation system is made according to single-channel or two-channel (with 100% redundancy of control systems and thyristor rectifiers) schemes. The power supply of the control circuits is backed up from the 220V operational direct current source and (or) from the auxiliary network ~220V, depending on the version.

In two-channel systems, each regulator (ARV1 and ARV2) is a full-featured generator excitation control system, has its own set of analog sensors (with individual galvanic isolation), discrete inputs and outputs, and protection devices. If the working channel is damaged, an automatic, shockless transition to a working regulator is carried out.

Each channel provides automatic and manual excitation control, switching between manual and automatic control modes is bumpless. Mode switching (Automatic/Manual) is carried out using a key on the front panel of the cabinet (in local control mode) or from the main switchboard (in remote control mode). Also, the manual mode is switched on automatically - in case of loss of measuring voltage circuits and simultaneous unavailability of the backup channel. Generator voltage regulation, regardless of the active channel number and regulation mode, is carried out with one key on the front panel or main switchboard.

The control system consists of the following interrelated modules:
1. Two independent microprocessor excitation controllers DExS (for two-channel systems);
2. Communication module iCM;
3. Operator panel DExS.OP.CM3;
4. Power backup system for own needs.

Automatic excitation controller DExS

The control system is a DExS multiprocessor excitation control unit that implements direct digital control of a thyristor exciter. High-speed digital signal processors with an FPU (floating point calculation unit) are used.

Advantages of DEXS:

It is a one-piece plug-in module providing full functionality for generator excitation control. Includes a complete set of inputs / outputs:
Analog inputs allow direct measurement of signals from basic sensors (current and voltage of the stator and rotor).
16 digital inputs and 16 digital outputs =24V.
SIFU - 6 thyristor control pulse amplifiers.
High accuracy of controller calculations due to the use of floating point numbers.
High speed computing. All analog signals and the excitation controller are processed at a constant frequency of 10KHz.
There are no trim elements at all. All settings are stored in non-volatile memory and are duplicated many times with the function of automatic restoration of a faulty settings block from a backup copy.
Additional removable key for backup copies of settings.
Thyristor pulse amplifiers with valve conduction control.
Automatic phasing SIFU - works correctly with any phasing.
Automatic continuous measurement of the rotor insulation resistance in the range of 0-2000 kOhm in 62 Ohm steps.
Built-in 10,000 samples per second oscilloscope for 32 channels (32 of any 16-bit registers selected) with configurable auto-triggering scenarios, number of pre- and post-samples. It is used for commissioning and as an emergency oscilloscope. Emergency oscillograms are written to non-volatile memory after the generator stops.

iCM communication module

Thanks to the iCM module, two DExS controllers (for redundant systems) appear to external data consumers (APCS, instrumentation, operator panel) as one device.

The iCM communication module provides the following services:

Synchronization of the settings of the DExS regulators (the DExS settings must be completely identical during the entire operation of the exciter).
Bilateral exchange of information between two DExS and external data consumers (operator panel, PLC). For access from the process control system, iCM is equipped with:
Ethernet 10/100T Mbps, MODBUS TCP/IP protocol
RS485 protocol MODBUS RTU
Transfer of data "from" and "to" the instrumentation chain from a centralized source, through:
2 inputs 4-20mA
2 outputs 4-20mA
12 discrete inputs =24V
8 discrete outputs =24V 150mA
Primary accumulation of statistics data and oscillography on a micro-SD card up to 4GB (8 days of continuous recording).

Operator panel DExS.OP.CM3

Panel devices provide operational information about the main parameters of the system, while they are non-volatile indicators (they do not require an additional power source).
The operator panel increases information possibilities. The operator panel displays detailed information about the operation of the excitation system and generator, allows you to change settings, view event archives and statistics, copy the necessary information to external drives.

Viewing statistics and waveforms from the event recorder is possible using the Ajuster software (via the interface) and the operator panel. The operator panel provides an extended event registration service:

recording of waveforms and statistics on an SD card (can be removed for incident investigation);
an oscillogram is a continuous record of 30 days with a frequency of 100 records of all controller parameters per second;
the waveform and statistics can be copied to a USB flash drive or over the network to a remote server drive;
access to files is possible via Ethernet using a secure SSH protocol;
using the operator panel, you can view the oscillogram of any event, within an arbitrarily set time interval "before" and "after" the event.

Thyristor converters

The thyristor converter (rectifier) is made according to the bridge circuit: with a rated excitation current of up to 400A, thyristor modules are used, installed on coolers with natural air cooling; rectifiers over 400A are made on tablet thyristors, which are cooled in a combined way.

The combined cooling method combines natural and forced cooling. A special thermal control module measures the temperature of thyristor assemblies at several points using digital temperature sensors and turns on the fans only when heated above the setpoint and turns off the fans after the assemblies cool to the set temperature.

In excitation systems with a backup thyristor converter, each thyristor rectifier has an automatic switch at the input and a disconnector in the DC circuit. The signals from the circuit breaker and disconnector are fed into the regulator and when the switching equipment is turned off (when the protection is triggered or manually), there is an automatic transition to the backup rectifier.

Field damping

Extinguishing the field of generators over 12.5 MW can be carried out by a controlled triac switch with a block of quenching resistors, and, on request, a field quenching machine (AGP) is installed - in this case, the field quenching circuit is located in a separate cabinet.

Power transformer

The thyristor rectifiers of the main and backup channels are powered by a TE converter transformer, which can be connected to the generator buses according to a self-excitation circuit or powered from a 0.4 kV source.

manufacturer's warranty

The manufacturer guarantees that the excitation system complies with the technical specifications, subject to the conditions of transportation, storage, commissioning and operation in accordance with the established technical documentation.

Warranty period of operation is 36 months.