In preparation for the show, we interviewed one of our most experienced test engineers to provide you with the most important information about DGUV V3 testing for wind turbines. In this interview, you will learn everything about the scope of the audit, the qualifications of our employees and the duration of the audit. Take the opportunity to meet us in person at the trade fair and make an appointment for a consultation!
Our Expert: Kevin Small
Master of Science (M.Sc.) in Wind Engineering, expert in DGUV V3 testing and Electrical engineering in the wind energy industry.
Since 2019 experience in the implementation of low-voltage and medium-voltage tests and switching operations. Certified EFK (Electrician) specialising in DGUV-V3 and switching operations in the medium voltage range.
Question 1: What tests do you offer as part of the DGUV V3 examination?
Kevin Small:
This is one of the most frequent questions from our customers. The DGUV V3 test includes a variety of tests to ensure that your wind turbine meets the legal requirements. We don't just test the electrical safety of the wind turbine, but also the medium-voltage turbines and protective devices that are essential for the operation of the entire plant. One a frequently mentioned topic is also the transfer station (ÜSt): Here we offer a comprehensive audit to ensure that after the shutdown of the medium-voltage system, all relevant components, such as fuses and cables, be tested for their function. In this way, we cover the entire test requirements and ensure the smooth operation of your wind turbine.
New the portfolio includes the testing of the external lightning protection system in accordance with DIN EN 61400-24. This includes resistance measurement or continuity testing from nacelle to earth connection lug in the base of the tower, divided according to design into Individual measurements, e.g. for spark gaps. Once the check is completed, you will receive the customer has a separate lightning protection protocol.
Example from practice:
Recently, we carried out a wind farm inspection, where the Cable paths of the switchgear checked. Different fields are examined here, including the transformer. These cables are basically never tested because this is not the case. is prescribed. Fortunately, the customer insisted on it and so defects were discovered and a fire within the plant was prevented.
Question 2: What qualifications do your employees bring to the DGUV V3 exams? with?
Kevin Small:
The qualification of our staff is the key to a successful and safe testing. All of our test engineers are trained Qualified electricians (EFK) with years of experience in the testing of Wind turbines. Our teams not only have extensive knowledge in the electrical engineering, but also have specific training for Switching operations on medium-voltage systems. They work with state-of-the-art Measuring equipment, such as insulation measuring devices and protective relay testing devices, in order to ensure accurate and reliable results. This expertise enables enable us to inspect even complex systems efficiently and safely.
Concrete Qualifications:
Our teams regularly submit proof of training and conduct the exams for over ten years. This includes not only the audit itself, but also also the trained eye for potential vulnerabilities that other possibly overlooked. We cover over 90% of the plant landscape.
Tip for operators:
When choosing your testing partner, make sure that the auditors are demonstrably qualified and have experience with the specific technique of wind turbines. An incorrectly executed inspection operation can cause expensive follow-up costs.
Question 3: How long does the audit take and when will the reports be available?
Kevin Small:
The test duration depends on the size and complexity of the wind turbine, an old system or a new system that contains many electrical components in hub, but we usually manage up to three On-site inspections. If major defects or safety-related problems we will inform the operator immediately in order to provide rapid to initiate countermeasures. The goal is to get the plant up as quickly as possible safely put back into operation. The test report, in which all the results is usually within working days before.
What What happens in the event of defects?
If we find defects on site, we discuss them directly with the customer and provide recommendations for remediation. Recently, we were able to early detection of corrosion damage to a cable route is a potential critical situation – and without much disruption to the Operation.
Next Step:
We also make sure that you are aware of the next inspection interval in good time be informed. This gives you planning security and enables you to: plan future inspections early on in order to avoid unnecessary downtime. avoid.
Question 4: What is the price for the DGUV V3 inspection?
Kevin Gering:
With the DGUV-V3 test, you have to differentiate between low voltage, medium voltage and lightning protection testing. For the medium-voltage test and the lightning protection test, a number of tests must be completed in order to be qualified at all. These include training as an electrician, training for switching operations up to 36 kV, testing of stationary equipment and lightning protection testing.
The price then breaks down as follows:
- Prices for training courses
- Prices for refresher training
- Travel costs
- Working time
- Purchase of measuring devices and equipment
- Maintenance costs of the measuring devices and equipment
- Preparation of protocols
To the inspection calculator
