Raytech mini-ATOS Instruction Manual page 51

Tap Control
If you connect the mini-ATOS tap control output to the tap changer control unit, choose Yes. The
tap changer position then can be changed manually or automatically from the mini-ATOS. To find
out how to connect the tap control cable, please refer to chapter 13.5.
Max Transition
The tap changer equipped with a motor undergoes a transition process to change the tap position,
and it is essential to consider the maximum time required for this transition. It should be noted that
under certain circumstances, the transition time may be extended. For instance, when the tap
changing direction is altered, the transition time can be doubled. Therefore, it is crucial to input the
longest transition time from all possible scenarios. Failing to do so may prompt mini-ATOS to
initiate the next tap position measurement while the tap changing process is still ongoing, resulting
in inaccurate measurements and potential harm to the tap changer, particularly if it is of the DETC
type.
Preliminary
90297-0.24 Instruction Manual mini-ATOS Page 51 of 125