17 Tap Changer Interface
17.1 General
Tap changer interface allows the remote control of a motorized tap changer, as well as the remote control
of the 2293 when operator is placed in front of the tap changer and far away from the device.
The tap changer remote controller consist of an
electronic circuit, and three connecting cables
Connecting cable to the 2293
Connecting cable for tap changer remote
operation
Return signal from tap changer when tap position
change is completed.
Manual switch is also available for remotely
trigger the next measurement in the 2293
17.1.1 Tap changer remote operation signal
The 2293 can operate the tap changer trough two free voltage contact switches. One for increasing the tap
changer position, another for decreasing the tap changer position.
Connect the Up/Common/Down control
contacts of the tap changer
Max. 250V AC, 30V DC, 500mA
The contacts have to be connected to the corresponding input signals located in the transformer control
box. No output voltage is supplied by the device, therefore the necessary power to move the tap changer
motor has be connected separately.
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