Service
Our service portfolio
- Engineering support
- Measurements, analyses, proposal for solution
- Inspection, maintenance, repair, dismantling
- Rental measuring instruments – consulting service
Services
Power system unloading, voltage quality improvement and energy cost reduction
Preventive electrical network analysis
An internal electrical network at maximum load or with insufficient power quality is an unforeseeable risk factor.
At the first sight, it seems unreasonable to perform an electrical network analysis for a running system that operates without any disturbances. However, if such a measurement is considered under the aspect of preventive maintenance or the requirement of an optimum unloading of the in-plant power supply, the advantages will be obvious soon.
The measurements help to identify causes for prospective failures respectively power reserves as well as potential savings at an early stage. Thus, the needed measures can be taken.
Damage prevention should have priority over damage recovery.
Please request your individual quotation for "electrical network analysis".
Analysis of current status with proposal for solution
If you are already facing one or several of the following problems, there is an urgent need for action.
- High reactive or active energy costs
- High power losses
- High load on transformers, cables and switchgears
- Distortion of electrical network voltage, poor power quality
- Additional heating of motors, capacitors, transformers, etc.
- Overload or failure of electrical network equipment
- High neutral conductor currents for the 3rd, 9th or 15th harmonics (overload, risk of fire)
- Voltage drops in the power supply; various customers may be affected in the public electrical network
- Malfunction or failure of electronic controls
- Problems with EDP systems
- Quick voltage changes in the power supply system
- Eye fatigue due to luminance variations of the lights
- Acoustic interference for electromagnetic components
- Passing over of high-frequency oscillations from the power module to the electronic system
- Irradiations into radio systems
- Acoustic noise, especially in recirculating pumps of heating systems
- Extraction or lifting of ripple control frequencies – malfunction of ripple control transmitters
This is how we proceed
1 Preparation
- Problem description
- Recording of electrical network structure and related data
- Analysis of consumer behaviours
- Determination of the measuring points
- Selection of the measuring technology
2 Measurements
- Obtaining an overview
- Test on relevant checkpoints
- Identifying the type of distortion
- Determining the further procedure
2a Short-term measurements
- Recording of starting procedures
- Recording of repeating transients
- Checking the symmetry of loads
- Obtaining an overview of harmonic distortion and reactive power load
2b Long-term measurements
- Recording of sporadically arising events
- Recording of load history
- Recording of harmonics, as well as active and reactive power over a long time period
3 Evaluations
- Selection and processing of the measured data
- Interpretation of the measured results
- Identification of the distortion causes
- Development of recommended actions
4 Documentation
- Overview drawing with measuring points
- Clear representation of measured data
- Emphasis on important measurement results
- Representation of recommended actions
5 Planning of recommended actions
- Pointing out of alternatives
- Quotation with explanations
6 Testing of effectiveness
- If required, testing of the proposed solutions under real conditions with success control by taking measurements
7 Implementation and testing
- Supply of the equipment
- Installation support
- Commissioning
- Success control by subsequent measurements
Please request your individual quotation "Problem analyses".
Maintenance, Revision, Repair
Systems for unloading the electrical network and quality improvement must be maintained regularly.
Reliability is ensured by a maintenance agreement, which should also include preventive measurements.
Example:
In older power factor correction systems with audio frequency suppressing circuits, resonances may occur in the range of the electrical network harmonics.
The consequences are thermal overloads of the capacitors and other equipment up to fires.
However, defective contactors, reactors or capacitors as well as capacity losses of reactor-protected capacitors may lead to similar results.
Please request your individual quotation "Maintenance agreement" or "Repair".
Maximum reliability is offered by the following recommended combination: "Maintenance agreement with preventive electrical network analysis".
Please request your individual offer.
Rental measurement equipment, engineering, commissioning
Rental equipment
- If you intend to conduct the electrical network analyses yourself, you can rent the required equipment from us and, if requested, have the evaluation carried out by us.
Engineering
- We are ready to consult you in the preliminary stages of your planning and point out the possibilities to secure the power quality and the savings potential by electrical network optimization and power factor correction.
Commissioning
- For all quoted systems and devices, we can offer you the commissioning by our technicians.
