1. Electrical installations
We carry out complete works on the execution of electrical installations with the installation of accompanying equipment on:
- Industrial facilities
- Residential and business facilities
We perform supervision services for the investor over the execution of works by other contractors. In addition to these works, we also carry out work on thermotechnical installations as needed.
All the equipment that is installed comes from renowned manufacturers and is one of the guarantees of the quality of the work performed. By following world trends, in terms of equipment and performance, the company can respond to even the most demanding clients.
Coordinated teams and very good cooperation with other contractors on the buildings guarantee the speed and quality of the work performed.
2. Power sources
Power supply and power distribution are one of the key links of the system. Their precise dimensioning, but also their correct use, raises the level of reliability of business processes. Dual power supplies of IT equipment raise the level of reliability – this level must also be transferred to the power supply devices, and only such a system can meet the highest reliability requirements of the complete DC.
Power supply system implementation: monolithic or scalable-modular design, N+1, 2N, 2(N+1) system configuration is an area where we have extensive experience. Profiling and delivery of DEA units, as well as testing of the complete power supply system, is one of our areas of activity. The technical and service department with top-quality measuring instruments is able to respond to all user requests in the field of power supply. Monitoring the development and commercial availability of new products, education and training of employees in training centers and consistent application of scientific procedures and standards ensures a high level of support for end users.
Work diligently. You’re getting the job done, but unfortunately the power goes out. All the effort may have been irretrievably lost, but you will only know that when the electricity comes. To prevent this from happening to you, UPS devices can save you.
For practical reasons, we have divided UPS devices into two groups: Off-Line and Line-Interactive / On-Line.
- Offline
They are suitable for personal use, small and home offices
- Line-Interactive / On-Line
They have a more advanced system for providing uninterrupted power supply and are used mainly for business purposes – on servers, in Data Centers and everywhere where data loss and work interruption are not acceptable.
3. DEA – diesel electric units
Aggregates are a combination of an internal combustion engine as a driving machine and on the other hand an electric generator for the production of electricity. This means that the electric generator induces an electric current in a closed conductor and thus converts mechanical energy into electricity. That’s why aggregates are electrical machines that serve to enable continuous power supply, i.e. to enable smooth operation of all devices powered by electricity. Electric aggregates or abbreviated aggregates for the production of electrical energy (electricity) most often use SUS engines, and oil and fuel oil, i.e. oil derivatives, are used as fuel.
Use of aggregates
They are often used in households, and much more often in the economy. We will list only some of the systems in which they are used. More precisely, they are used wherever it is necessary for the IT system to function flawlessly and for a power outage not to affect the loss of data, services or users. Therefore, aggregates have primacy in telecommunications companies, hospitals, banks, state administration, laboratories and in all facilities where uninterrupted power supply is necessary. So wherever it is necessary for the system to work without interruption, that is, wherever there are risks of power outages, it is necessary to provide an aggregate. And not just any aggregate, but an aggregate of the appropriate strength.
How to calculate the required aggregate power?
Before answering this question specifically, we need to get a little deeper into the issue of electricity consumption. In the shortest and simplest terms: not all appliances consume electricity in the same way, nor can any electrical appliance use 100% of the electricity produced by the generator. For easier understanding of this fact, we can simply divide all devices that can be connected to your new generator into three groups:
- Ohmic consumers, which use electricity to create light and heat (ordinary light bulbs, heaters, TA furnaces). With these consumers, the degree of utilization of electricity provided by the generator is almost ideal and amounts to about 97%. This means that if you were to use the aggregate only for this category of appliances, you could get as much power in kW from the aggregate as the nominal power of the aggregate in kVA
- Inductive consumers are all those devices that have electric motors in them. These devices can use 70-80% of the electricity generated by the generator. However, the problem with these devices is that for the very start of their electric motors, that is, for turning on these devices, the so-called shock current of the aggregate is required, which in practice is 2 to 3 times higher than the power of the device’s electric motor!
- Capacitive consumers are all devices that accumulate current to switch to regular mode of operation – such as tube lights with starters or flash devices. Such devices have the lowest degree of utilization of the current that the aggregates provide, and this degree is often around 50%. This is due to the fact that these devices draw a significant amount of so-called reactive power from the aggregates to fill their local capacities in the first stage of sequential operation.
If we now look at the above-mentioned percentages across all three categories of consumers, we come to the conclusion that the nominal power of the aggregate in practice most often does not correspond to the usable power of the aggregate. Therefore, the usable power of the aggregate is determined by the devices you connect to the aggregate, not the aggregate itself. This is precisely why we express the aggregate power in units of kVA (kilovolt-amperes) and not in kW (kilowatts).
Single-phase or three-phase?
This choice should be obvious, but one thing should be kept in mind: if you opt for a three-phase generator, you will have both a three-phase and a single-phase connection on it. If you choose a single-phase aggregate, you will only have a single-phase connection. That’s why it’s smart to look at all needs – not only current and current, but also future needs.
Gasoline or diesel units?
For smaller generators, this dilemma is a matter of free choice. However, you should know that diesel generators are fundamentally more powerful than gasoline generators, and if you need a generator with a power greater than 20 kVA, you will be forced to opt for diesel. On the other hand, when comparing gasoline and diesel generators of the same power, diesel generators are significantly more expensive than gasoline generators and are louder.
DEA – diesel electric units
- Open aggregates
- Closed aggregates
- Add-ons – options
Open aggregates
Basic data:
The unit is placed on a concrete foundation, which prevents the transmission of vibrations to the building or to the concrete slab.
For smaller aggregates, the internal space in the building is used, while for larger aggregate systems, a separate, purpose-built closed facility is required. The unit requires the laying of electrical installations, as well as mechanical installations, such as ventilation ducts for air supply and exhaust, an exhaust pipe for burnt gases, exhaust gases from the premises in accordance with the architectural solution to the roof of the building, etc. Open versions of aggregates in an environment that requires low noise require additional sound attenuation in the ventilation ducts as well as additional isolation of the space.
Powers from 9 to 2,000 kVA in one device, single-phase or three-phase systems
Mode of operation
- independent work,
- backup power supply in case of network failure,
- synchronous operation with the network,
- parallel operation of several aggregates.
Closed aggregates
Basic data:
We use closed versions of aggregates where we use the aggregate outside, as well as in a closed space.
Placement in a closed space is recommended primarily where environmental protection from aggregate noise is required or aggregate protection from environmental influences or access by unauthorized persons (possibility of touching, vandalism…). It is brought into the space with adaptable mechanical installations. It is placed on a concrete foundation, which prevents the transfer of vibrations to the building. It can be installed on the ground or on the roof with the appropriate construction. The unit in the housing is protected from the weather, so it can also be installed outside. The engine of the generator is heated so that it is always ready to take the load soon after starting.
Optionally larger tanks enable greater autonomy.
For all questions regarding the selection, placement, schedule and more, contact us so that we can find the best solution together.
Powers from 9 to 3,000 kVA in one device, single-phase or three-phase systems
Ways of working
- independent work,
- backup power supply in case of network failure
- synchronous operation with the network
- parallel operation of several aggregates
Accessories for diesel electric generators
It is possible to synchronize several aggregate sources with each other. With this, we achieve greater reliability of the backup power supply and increase the available power.
It is also possible to synchronize the aggregate source with the electrical grid. This possibility allows the user to test the unit under load, without interrupting the supply of electrical consumers and covering energy peaks.
Remote monitoring and management of the aggregate is possible in several ways. The most common are via the Internet and GSM/GPRS network.
Additions of diesel electric generators are primarily intended for the integration of diesel electric generators in the environment and to meet the additional requirements of both the facility and the environment.
Some additions
ATS Automatic switch for switching the power supply between the mains and the diesel generator when there is a power outage.
- exhaust system – exhaust gas outlet from the space
- hot air exhaust system
- silencer
- air blinds (fixed, gravity, electric)
- additional external tank (underground or above ground)
- pouring assembly
- alarm and communication devices
Aggregate noise
By convention, the noise generated by generator engines is measured at a distance of 7 meters from the generator. European norms dictate that this noise level must not exceed 70 dB in an open space.That is why individual aggregate units intended for outdoor operation are soundproofed with a chassis. According to the level of noise they produce, the aggregates from our offer can be classified into 3 categories: standard (noisy), quiet and super quiet (jargon – noiseless aggregates).Although the noise level of each aggregate that we offer is clearly stated in the technical specification of each individual model, in general we can draw the following conclusions:
- gasoline generators generate less noise than diesel generators
- aggregate engines operating at 1500 rpm generate less noise than engines operating at 3000 rpm.
- water-cooled aggregates produce less noise compared to air-cooled engines
Automatic switching on
The set for automatic power-on of the generator in the event of a voltage drop or power failure is one of the optional components that can be installed in the generator according to your request. Of course, this modularity does not apply to all generator models, especially not to low power generators. If you choose an aggregate for industrial facilities, companies, public institutions such as banks, hospitals, or catering establishments and even for private homes, we highly recommend the option of automatic inclusion of the aggregate.
