Plant certification

In order to connect photovoltaic and CHP systems (generation systems) to the public power grid, a system certificate in accordance with VDE-AR-N 4110 must be submitted to the power grid operator for systems with a capacity of PAV,E >270kW or ΣPEmax >500kW. The plant certificate certifies to the grid operator that the plant has been designed in accordance with the regulations.

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We connect your plant to the grid 

Our employees are among the pioneers with many years of experience and extensive expertise in technical connection regulations and the special features of the technical connection conditions of the various grid operators.

For the German market, we test and certify your generation plant (EZA) in accordance with the applicable medium-voltage guideline - VDE-AR-N 4110 - Technical rules for connecting customer installations to the medium-voltage grid, including TR8 of the FGW.

As an accredited certification body, we issue type A and type B system certificates in accordance with VDE-AR-N 4110 as well as EZA declarations of conformity and support you with the commissioning declaration in accordance with Annex E.11 of VDE-AR-N 4110.


Target groups for certification

The certification is aimed at companies involved in the planning, construction, and operation of generation plants.

 

Advantages of certification

Upon presentation of the plant certificate, the requirements for the electrical properties of the generation plant are deemed to have been met. If the electrical properties of the plant cannot be verified by a plant certificate, a plant operator may be denied connection to the medium-voltage grid in Germany.

 

Our expertise for your success

We are the experts when it comes to the international approval of grid-connected self-generation plants and your point of contact for:

  • Photovoltaic systems / solar parks
  • Battery storage systems
  • Hydropower plants
  • CHP plants
  • Emergency power systems

 

Our services

Type A or B plant certification

  • Expert support throughout the certification process
  • Review of planning documents
  • Issuance of Type A or B plant certification

EZA Declaration of Conformity

  • Document review
  • Preparation of the test report
  • Preparation of a list of documents
  • Issuance of the EZA Declaration of Conformity

Commissioning Declaration

  • Review of the documentation for the plant
  • Review of the test reports for the commissioning tests
  • Preparation of the photo report
  • Protection test reports
  • Protocols for testing the telecontrol device
  • Parameter verifications/setting protocols for EZA controllers and generation units

Note:
We do not prepare a commissioning protocol in accordance with Annex E.10 of VDE-AR-N 4110; this is the responsibility of plant installers/commissioners and plant operators.

 

Protection tests

  • Overcurrent time protection (UMZ / AMZ)
  • Decoupling protection / NA protection (voltage and frequency protection)
  • Reactive power direction undervoltage protection (Q-U protection)
  • Overcurrent protection on transformer-powered protection devices
  • Earth fault protection
  • Distance protection
  • Generator protection


Functional tests of EZA controllers

  • Active and reactive power control of EZA controllers according to grid operator specifications
  • Q(U) characteristic curve
  • Reactive power Q with voltage limiting function
  • Q(P) characteristic curve
  • Displacement factor cos φ

Even in the absence of actual value recording or logging, measurements are performed and logged using state-of-the-art mobile measuring equipment


Individual verification procedure for hydroelectric power plants connected to the low-voltage grid

  • Issuance of the verification document in the individual verification procedure
  • Support for independent performance of measurements
  • Performance of measurements by Kiwa Primara


Creation of adjustment protocols for EZE and EZA controllers / parameter verifications


• Inspection of devices (operating equipment) with regard to the specifications from the unit, component, and system certificate

• Checking and reading the correct settings of inverters, CHP units, and EZA controllers

• Support with complex grid connection guideline functions (grid code functions)


Recurring tests

  • Protocol for testing during the operating phase in accordance with Section 11.5.5 of VDE-AR-N 4110 (including protection test protocols for protection tests) to comply with Article 41 of the NC RfG
  • Support in compiling the necessary information for submission to the grid operator
  • Protection tests and functional tests of active and reactive power control
  • Comprehensive service tailored to your needs


Additional tests

  • Power measurements
  • Power quality

 

Accreditation

Thanks to our numerous national and international accreditations and certifications, you can be sure that our work meets high quality standards, certificates, and attestations enjoy excellent worldwide acceptance. Kiwa Primara has been accredited by the German Accreditation Body (DAkkS) since 2011 in  accordance with DIN EN 17025 and DIN EN 17065 to test and certify electrical equipment. In addition, we offer testing and certification in accordance with the IECEE CB Scheme procedure and are a recognized GS certification body.

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