Installation manual

UNIPOWER

Installation manual PQ Secure

8 GPS CLOCK SYNCHRONISATION MODULE

In many measurement applications it is important to have very accurate timing of the measurement.

This is required since the measurement algorithm demands it and/or that the installation site is

remote and no periodic communication with clock synchronisation can be done. A very effective

way to achieve this is to synchronize the instruments internal clock with the atomic clocks of the

global positioning system (GPS) satellites.

With accurate real-time clock synchronisation the comparison between events such as sags/swells or

transients between different sites in the electrical network can be made with high accuracy, even if

the distance between the sites is large.

The GPS clock synchronisation module can be used with the Unipower UP-2210 series and Unilyzer

series of instruments. In order for the synchronisation to work, the units must be equipped with the

appropriate software as well as the necessary peripheral hardware.

Below is a mechanical drawing of the optional GPS unit delivered by Unipower.

Figur 41