The FRQ310 is a device for measuring the power grid frequency in a number of different applications. It provides a resolution of +/1mHz which makes it particularly suitable for grid frequency measurements in the field of primary control reserve (FFR firm frequency response / dynamic containment). But it will suit perfectly as well in other smart grid and power applications such as substations, small and decentral generating units or virtual power plants.

With its compact dimensions, the frequency measurement card will fit even in smaller housings or control boxes. The device is connected to the grid with two terminals (phase and neutral). The integrated GPS module allows timestamping of the frequency data.

A LED scale at the front shows the deviation from the nominal frequency within a range of +/- 200mHz.

The FRQ310 comes in 2 versions:

Version 1 (extension card):
The frequency measurement is delivered as an extension or the @120 PLC automation system from OHP.

Version 2 (stand-alone, Modbus RTU):
The frequency measurement card comes as stand-alone device. It provides a serial port (Modbus RTU) to connect to any PLC or remote control system.

Further Information

About OHP
OHP GmbH from Rodgau is a system supplier for automation, telecontrol and control technology. We offer our customers products and services for the fields of infrastructure, energy and industrial plants, relying on integrated system technology and open communication standards for safe and economical long-term operation.

Experience and quality since 1989
The employees of OHP combine the know-how of nearly 30 years. Emerging from an AEG development department, we are one of the few companies that can rely on an in-house developed product portfolio ranging from telecontrol/automation devices to open communication technology and control systems with additional packages.
OHP stands for investment protection and innovative system solutions as well as customized engineering and service for the benefit of our customers. OHP has been working according to recognized quality standards for years and is certified according to ISO 27001:2017, ISO 9001:2015, SCC occupational health and safety and other standards.

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