# Commission Regulation (EU) 2016/1447 of 26 August 2016 establishing a network code on requirements for grid connection of high voltage direct current systems and direct current-connected power park modules (Text with EEA relevance), Annex I: Frequency ranges referred to in Article 11

Extent: E+W+S+N.I.

Frequency range
Time period for operation
47.0 Hz-47.5 Hz
60 seconds
47.5 Hz-48.5 Hz
To be specified by each relevant TSO, but longer than established times for generation and demand according to Regulation (EU) 2016/631 and Regulation (EU) 2016/1388 respectively, and longer than for DC-connected PPMs according to Article 39
48.5 Hz-49.0 Hz
To be specified by each relevant TSO, but longer than established times for generation and demand according to Regulation (EU) 2016/631 and Regulation (EU) 2016/1388 respectively, and longer than for DC-connected PPMs according to Article 39
49.0 Hz-51.0 Hz
Unlimited
51.0 Hz-51.5 Hz
To be specified by each relevant TSO, but longer than established times for generation and demand according to Regulation (EU) 2016/631 and Regulation (EU) 2016/1388 respectively, and longer than for DC-connected PPMs according to Article 39
51.5 Hz-52.0 Hz
To be specified by each relevant TSO, but longer than for DC-connected PPMs according to Article 39
Table 1: Minimum time periods an HVDC system shall be able to operate for different frequencies deviating from a nominal value without disconnecting from the network.

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Source: https://www.legislation.gov.uk/eur/2016/1447/annex/I (the official version)
Page: https://openlegislation.uk/eu-regulation-2016-1447/annex-I
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.