Control power – Process control

Pre-qualification for the provision and delivery of control power

Control power is required by the transmission system operator (TSO) to ensure a balance between generation and consumption of electrical energy at all times.

Potential suppliers for various types of control power may participate in a pre-qualification process in which they demonstrate that they meet the requirements for the provision of one or more types of control power required to ensure reliability of supply. In addition to technical competence, the proper delivery of the control power must be guaranteed under operating conditions and the economic performance of the potential supplier.

The pre-qualification requirements are included in the Transmission code 2007 “Network and System Rules of the German Transmission System Operators” published by the German TSOs. Chapter 5 “System service” contains the general requirements, the Annex D and the detailed requirements for each type of control energy. Detailed information is available on the website

Our high-quality electric heaters and process controllers meet these pre-qualification requirements in a special way, thanks to the following:

  • Automation concept
  • Monitoring load capability
  • Stepless power control
  • Online power measurement
  • Data communication using the bus systems


Below are some sample pictures that describe the configuration of the heater.

Operating data and status displays of the electric heater

The basic picture of the graphical representation

Service screen of the individual heating elements with current status

OhmEx - Your partner for industrial heaters

Contact now

OhmEx Industrielle Elektrowärme GmbH
Industriering 7
DE – 63868 Großwallstadt
Phone: +49 6022 / 26 12 00
Fax: +49 60 22 / 26 12 02

How to find us

Quality & Certificates

The OhmEx company regularly gets itself certified externally - so we keep our quality consistently high!
Currently we are certified according to
IQNet ISO 9001: 2015
and ISO 9001: 2015.
Download the certificate ISO 9001:2015 here:
ISO 9001-2015 Certificate
Download the certificate IQNet ISO 9001:2015 here:
IQNet ISO 9001-2015 Certificate

Your direct contact

You are also welcome to contact our sales department directly:

Dipl. Ing. Wolfgang Vogler
Tel.: +49 6022 / 26 12 01