10
8.4 PRELIMINARY INSPECTIONS
At the end of the installation check that the setting corresponds to the wiring: enter the instrument setup
according to the content of next chapter and set the wiring diagram, the CT ratio and the PT ratio.
8.5 SETUP
8.5.1 Access to SETUP
It allows to configure the device to fit the application. From any displayed page, press
UP + SHIFT keys at the same time and hold for at least 3 seconds to enter the SETUP
mode. A password key combination will be requested; press UP key twice, then SHIFT
key twice and finally UP key twice again. Each SETUP page is identified by the symbol " ".
NOTE. The procedure must be done in less than 5 seconds.
To scroll the SETUP pages, press the UP key. The pages sequence is:
CT transformation ratio [Ct]
This page allows to set the ratio between the primary and secondary value of the
current transformer (CT) used on the system. The values are among 1 and 9999.
The default value is 0001 (Example: 1500A / 5 A = 0300). The display formats and
multiplying factors depend on the set CT value. The DO pulse weight set page is automatically updated
considering the new CT value, i.e. the pulse weight changes according to the new CT value (see diagnostic
functions, chapter 9, case 8). Set the value following section 8.5.2.
WARNING!
For 25A instrument version, CT ratio usually programmable in the device is factory preset
to 5. Do not change this value.
NOTE. CT value is factory preset in case of instruments with Rogowski inputs.
Current Fullscale [FSA]
This parameter allows to connect current transformers with 1 or 5 A secondary
value. Set the value following section 8.5.2.
WARNING!
For 25A instrument version, FSA value usually programmable in the device is factory
preset to 5A. Do not change this value.
NOTE. FSA page is not displayed in case of instruments with Rogowski inputs.
PT transformation ratio [Pt]
NOTE: The Pt setup page availability depends on the instrument model.
This page allows to set the ratio between the primary and secondary value of the
voltage transformer (PT) used on the system. The values are among 1 and 9999.
The default value is 0001 (Example: 20000V / 100V = 200). Check the instrument nominal voltage on the
external label for the correct setup of PT. Set the value following section 8.5.2.
To Next Page
Loading...