Many of us spend up to 90% of our day indoors, much of it at work and in public areas. The right lighting is therefore an important sub-discipline for our planning, especially for the winter season.

About 80% of all information is perceived by us humans through the eyes. This means that precise lighting planning and calculation should be a high priority, especially in the fields of DIN-compliant workplace, safety and emergency lighting systems. The aim is not to achieve maximum lighting but, rather, optimum lighting that meets the requirements.

The wide range of options on offer presents the user with an overwhelming level of choice. In particular, the various lighting systems for the special application areas require technical expertise and we would be happy to provide you with this.

Any electrical engineering infrastructure is only as good as its protection against lightning and overvoltage. Any disruption or failure of the infrastructure may have far-reaching consequences that can threaten the existence of a company.
Current damage statistics from electronics insurers show that lightning/overvoltage incidents are worrying causes of malfunctions. More than a quarter of all cases of damage are caused by overvoltage incidents due to electromagnetic influences.
In a highly technical electromagnetic environment, it is therefore now more necessary than ever before to plan and implement measures to counteract the mutual influence of electrical and electronic devices and systems in advance.
This is the only way to minimise the risk of disruption or destruction.

As a special service, we create the necessary fire protection regulations for the operator of the building and also plan the technical equipment for early fire detection, i.e. preventive fire protection.

Fire protection regulations according to DIN 14096 contain rules for behaviour in the event of a fire, as well as necessary measures for fire prevention.

There are no uniform requirements for the preparation of fire protection regulations for every building across the country. The requirements of fire protection regulations are usually derived from the conditions of the building permit or the responsible fire prevention authorities.

The fire protection regulations according to DIN 14096 include

• Part A Rules of conduct for persons in case of fire
• Part B Rules of conduct to prevent the spread of fire / smoke
• Part C Rules of conduct for persons with fire protection duties

Comfort considerations, safety aspects and increased competitive pressure are causing the rapid growth of flexible installations, such as bus technology. As a result, the installation workload increases and is justified by an automation effect in operation.

A conventional electrical installation, in conjunction with the additional control cables for measurement, control and regulation technology of the supply and disposal facilities in buildings, leads to true chaos in terms of the number of cables. This is difficult to manage in the event of disruptions and changes in use and leads to high subsequent costs.

All technical installations in buildings must be supplied with electrical energy. However, if the measurement, control and regulation technology is "networked", all devices and systems can exchange information with each other. This allows supply networks to be combined and thus reduced.

Common bus systems:

KNX Konnex
EIB European Installation Bus
LON Local Operating Network
Luxmate bus system by Zumtobel

Our working life and our value creation are no longer imaginable without technical and communication devices. An uninterruptible power supply is therefore of utmost importance for every building. A short-term failure of production equipment and computer systems can cause damages amounting to millions nowadays and can be avoided almost without exception by good planning.

The basic prerequisite for a reliable electrical infrastructure supply is, first of all, a detailed analysis and determination of requirements. Only by diagnosing the exact performance data and planning the necessary cable cross-sections and the protection for these can a high degree of supply reliability be guaranteed as a primary objective.

In general, the power is supplied from the low-voltage network of an energy supply company. However, the above-mentioned reliability may make it necessary to obtain a supply from the medium-voltage network as and when necessary.

Furthermore, there is the technical possibility of ensuring a network-independent, uninterrupted power supply by means of uninterruptible power supply systems or emergency power systems.

Every building that is equipped with a fire alarm system requires fire service plans in accordance with DIN 14095. Fire service plans provide an important orientation aid for the fire and rescue services and provide a quick overview, even as they approach a property. These plans show, for example, all the main shut-off elements for gas, electricity and the assembly points for evacuating people, the locations of hydrants etc. This information is also available to us as part of our general planning services. We offer the preparation of fire service plans as a separate service.

Escape and rescue route plans in accordance with DIN ISO 23601 show the fastest possible route to an exit to the outside or to a safe area.

They also include the following points

• Floor plan or extracts thereof
• Escape and rescue routes
• Location of first aid facilities
• Location of fire extinguishers and other fire protection equipment
• Location of assembly points
• Location of the observer
• Rules for behaviour in the event of fire

Escape and rescue route plans are often neglected in construction and planning practice because no particular trade group feels that they are responsible for preparing them. Since HF already stores the floor plans and the marking of rescue routes in most construction plans, we have all the information we need to create these plans. We offer the preparation of the plans as a separate service.

Where would the world be without mobile communication and data exchange via mobile phones, smartphones etc.? We can no longer imagine our lives and the working world without our devices that we use everyday. Nevertheless, there are often architectural limits to mobile availability. Modern buildings with reinforced concrete, steel and glass facades often form Faraday cages, which prevent or severely impair radiocommunication. If you wish to optimise the use of a building, transmitting and receiving units for GSM / UMTS networks can help you to solve the problem.

The importance of communication and data technology in companies is increasing all the time. Efficient use of data and communication media is a prerequisite for fast and productive work in everyday business life.
The multifunctional use of your networks is therefore of key importance and is guaranteed by "structured cabling".
This means that the terminal boxes are wired in a star configuration from the data distribution cabinet. The use of a uniform cable type for the telephone and IT applications results in a high level of flexibility in terms of use. Each connection can be used for computers, telephones and fax.

For us humans, light is a key component of our lives. Artificial light plays a decisive role in the presentation and use of buildings. HF-GmbH provides advice, plans and visualises your building projects and ensures that each building gets the right lighting for its use and purpose. We take into account the design aspects relating to staging and accentuation, as well as making a contribution to sustainability aspects, e.g. optimised energy consumption by choosing the right light source. As a sub-discipline of electrical planning, lighting design is more than just the basic illumination of a building structure: At our company, it forms the intersection between a deep, holistically rooted understanding of architecture and our expertise in electrotechnical engineering as an art form. On this basis, HF-GmbH has its own department for all planning activities in the field of lighting.

Media technology includes all kinds of presentation techniques, both in the auditory and visual field.
We create simple solutions for you in the private sector, as well as professional solutions for auditoriums, meeting rooms, video conference centres and similar facilities. Thanks to the individual overall planning which is tailored to your needs, even complex, interlinked solutions are no problem for us.

With increasing energy demand, obtaining the supply from the basic 400 V low-voltage network of the local energy supplier is no longer possible. In these cases, you need to obtain the supply from the medium-voltage network (10 or 20 kV network). This results in the installation of a transformer station, which is generally owned by the customer.

The field of renewable energy production ranges from photovoltaics, wind and water power to geothermal energy and bioenergy. On the path towards the energy revolution, we will help you create buildings and systems that are increasingly being operated with less nuclear energy and more renewable energy instead.

In a society which faces increased security threats, in which the state seems to be overburdened with the various security needs, it is becoming more and more important to provide the security that you need yourself. The planning of one's own security is initially based on evaluating the hazard situation in each individual case and distinguishes between the following sub-disciplines:

• Intrusion detection systems
• Fire alarm systems
• Smoke and heat extraction systems
• Video systems
• Data protection/security systems
• Access control systems
• Door control systems
• Dialling and transmission systems etc.

Proprietary solutions for building services engineering, lighting control, media technology, data and communication networks are a thing of the past. These technology types are increasingly being combined on a shared basis and communicate with each other and with the outside world, thus increasing our level of comfort. Due to the large number of different technologies that need to be combined, a leading position in system integration is key.

The optimum lighting solution is created by the planned interplay of daylight and artificial light. Our planning optimises the advantages of daylight and compensates for its disadvantages.

• Use of natural daylight and protection from direct sunlight at the same time
• Reduction of room heating in summer
• Reduction of glare from glass surfaces without darkening the room
• Improvement of daylight distribution

The change from analogue telephony to a digital world of communication requires very complex and extremely powerful systems, as well as server-based communication systems. Communication/data technology (IT technology) and telecommunications systems are planned in a networked manner and increasingly are being based on one single unit. The range of services extends far beyond the original task of purely auditory communication.

Environmental protection and resource conservation have become fundamental responsibilities with regard to any activities. Buildings are currently not only evaluated according to their use but also according to their environmental relevance and this will be the case in the future too. The Energy Saving Ordinance (EnEV) is an important tool for increasing the energy efficiency of buildings. In addition, more and more buildings are being constructed and certified according to DGNB or Leed criteria, thus promoting the sustainable design, construction and use of buildings.

Sustainably designed buildings, such as office, residential, healthcare and educational properties or airports, are certified according to LEED and/or DGNB in various quality levels. These evaluation systems define precise standards in the fields of the location concept, water and energy consumption, building materials and environmentally friendly interior design.

Thanks to intelligent switching, control and regulation by individual consumers, the maximum energy consumption is reduced or kept constant. In addition to the environmental aspect, the energy savings result in a direct financial benefit for the user, as well as better value retention with regard to the property.