FAQ system certificate B

As an accredited certification body, we receive many questions on the subject of “system certificate B”. To help you find answers quickly in practice, we have compiled the most frequently asked questions on this topic on this page.

What does a system certificate B cost?

Our prices depend on the respective system constellation (e.g. system size, presence of existing systems or a mixed network, etc.) and are therefore determined on a project-specific basis. Therefore, please use our quotation form for your request for quotation, in which the essential points regarding the system are requested. Please note in your calculations that the EZA declaration of conformity is also part of the complete certification process.

We aim to send you a project-specific quotation for your system within one week at the latest. As a rule, you will receive it 2-3 working days after requesting a quote via our homepage.

The duration of the procedure depends largely on the availability, content and ultimately the quality of the documents submitted. If all required documents have been submitted and all inspection points can be positively assessed, you will receive the system certificate 4 weeks after submission of the documents. If the documents are not submitted or the content is coordinated with third parties (e.g. network operators, electrical planners, manufacturers), we are dependent on the corresponding coordination/cooperation and cannot provide any information on the duration of the procedure in these cases.

The documents required for the system certificate correspond to the technical application rules of the VDE. These are

  • Data sheet with the technical data of the generation system / storage system (form E.8)
  • Grid operator questionnaire (form E.9)
  • Cover sheets of the unit and component certificates
  • Single-phase overview circuit diagram of the generating plant including NAP, property boundary, transformers, measuring, protection and control/regulation equipment, representation of the cable connections, details of cable types, lengths and cross-sections and details of the technical characteristics of the switchgear
  • Control concept including communication plan and transformer data for parking control (rated currents/voltages, accuracy classes, overcurrent capability, load)
  • This includes a representation in which the measured variables for the protective devices are recorded and on which switching devices the protective devices act, data of the auxiliary power source, data of the circuit breaker at the grid connection point, data of the protective transformers (rated currents/voltages, accuracy classes, overcurrent capability, thermal rated short-time current, load)
  • Specification of the planned tap changer position of the transformer
  • Site plan incl. coordinates of the generating units

Further documents may be required for certification activities on a project-specific basis (e.g. for mixing plants). We therefore reserve the right to request additional documents.

The system certificate is also known as the “planning certificate” and must therefore be drawn up during the planning phase of the installation or submitted in good time before the planned commissioning of the installation. The basis for the DC declaration of conformity is the submission of the declaration of commissioning (form E.11) with supplementary documentation of the installation status of the DC. The declaration of conformity reflects the actual status of the installation and thus finally confirms compliance with the VDE application rule. The declaration of conformity must be submitted to the grid operator no later than 12 months after commissioning of the system. The verification process is completed with the declaration of conformity. The chronological sequence is also shown here.

We recommend submitting the system certificate B to the responsible grid operator at least 4 weeks before the planned commissioning date. Please note that some grid operators have special regulations on this in their TAB.

In principle, the certification procedure correlates with the operating permit procedure for generation plants. Upon submission of the system certificate, the connectee receives a temporary operating permit for its system. After submitting the declaration of conformity to the grid operator, the connectee receives the final operating permit. If the system certificate is missing, the grid operator can refuse to connect the system to its grid. If the declaration of conformity is not submitted, the grid operator is entitled to disconnect an already connected system from the grid.

The system certificate B under condition is an option for connecting systems to the grid in the short term that have not yet provided all the necessary verification documents for the system certificate B (details in our press release). The missing evidence must be provided in the further certification process, i.e. as part of the declaration of conformity. At the customer’s request, we offer the “system certificate B under condition” procedure. However, we recommend that potential problems or missing evidence are not postponed to the next process step, but resolved immediately.

Our decision aid for the application of VDE-AR-N 4105, VDE-AR-N 4110 and the FNN note Simplified connection according to NELEV and EAAV helps to provide the correct proof to the grid operator regarding the grid connection of a generation system.

Yes, we accept orders from all over Germany.

Moeller Operating Engineering GmbH  (M.O.E.)

Kirchhoffstraße 1
25524 Itzehoe
Tel. +49 (0) 4821 / 6453 100
Fax +49 (0) 4821 / 6453 140
E-Mail: info@moe-service.com

Further topics

Request for quotation for system certification
System certificate A
System certificate B
EZA Declaration of Conformity

Kay Genzmer, Head of the PV & Storage System Certification Department – Your contact person

Please feel free to call me at
+49 (0) 4821 6453 – 270

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Awarded and certified

Accredited as a certification body according to DIN EN ISO/IEC 17065, inspection body according to DIN EN ISO/IEC 17020 and as a testing laboratory according to DIN EN ISO/IEC 17025 by the German Accreditation Body (DAkkS). Formerly recommended by the Bundesverband der Energie- und Wasserwirtschaft e.V. (BDEW) and currently by FGW e.V. – Fördergesellschaft Windenergie und andere Erneuerbare Energien.