When at the starting the device shows the message T154 C01 means that: you have purchased the model T 154 -V-
What are the changes introduced in the T154 model -V-:
Programming with default values: ALARM 120 ° C (CH1-2-3) - TRIP 135 ° C (CH1-2-3) - FAN YES (CH1-CH2-CH3) -
FAN ON 90 ° C - 80 ° C FAN OFF - CH4 YES - ALARM 130 ° C (CH4) - TRIP 145 ° C (CH4) - HFN NO - NO FCD -
VOT YES.
Introduction of the Voting feature, activated by default, voting programming pages 12-13 steps 24-25.
VOTING FUNCTION
The voting function derives from the redundancy concept that consists in duplicating the components of a system to
increase their reliability.
How does VOTING work?
Using the redundancy principle, we use the sensors installed on the three phases U-V-W to monitor the
transformer's operation, and at the same time ascertain the sensors are working correctly, discriminating against any
false alarms (generated by installation errors).
By activating the VOTING "YES" function, the control unit compares the temperature values recorded on the
monitored CH1-CH2-CH3 channels and enables the switching of the TRIP contact only if the TRIP threshold has
been exceeded on at least two channels over the same period T.
By selecting VOTING “NO” the function will be disabled.
Note: by setting Voting "Yes" the switching of the ALARM contact will anyway indicate the alarm threshold on each
individual channel has been exceeded.
To disable the Voting function, read the programming section on pages 12-13.
Attention: To control the transformer correctly from a temperature point of view, enabling the
VOTING function is allowed where the load distributed between the phases of the transformer is
adequately balanced. In addition, any conditions of FAULT: FCC-FCC-FCD on two or more
channels, with active voting, can determine the TRIP contact inhibition.
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