7 Commissioning
Maschinenfabrik Reinhausen GmbH 202082 3587317/21 ENTAPCON
®
14. Press to select auto mode.
ð If the actual voltage is outside the bandwidth, the device returns the
on-load tap-changer to the original operating position after 20 sec-
onds.
15. Press to select manual mode.
16. Set delay time T2 to 10 seconds and activate it [►Page 154].
17. Press twice to raise the on-load tap-changer 2 steps.
18. Press to select auto mode.
ð If the actual voltage is outside the bandwidth, after 20 seconds the de-
vice lowers the on-load tap-changer one step and after another 10
seconds another step.
19. Press to select manual mode.
20. Set delay time T1 [►Page 152] and delay time T2 [►Page 154] to the
desired value.
We recommend a temporary setting of 100 seconds for delay time T1 when
commissioning the transformer. Depending on the operating conditions, you
can also specify the delay time following a longer observation period. In this
regard, it is useful to register how the actual voltage progresses and the
number of tap-change operations per day.
7.5.3 Checking parallel operation
This section describes how you can run the function test for parallel opera-
tion.
Requirements To obtain perfect functioning in parallel operation, the device must be com-
missioned in independent mode. Make sure that the conditions below have
been fulfilled.
▪ All devices are set to the same operating parameters for "desired value"
and "delay time T1" [►Page 152].
▪ The "Activate parallel operation" [►Page 188] parameter is set to ON
▪ The desired Parallel operation method is selected.
▪ A different CAN bus address [►Page 189] (≠ 0) is set for all devices.
▪ All devices are in the same parallel operation group:
– With parallel operation detection via group input: A signal is present at
the same group input on all devices.
– With parallel operation detection via topology: The circuit breakers are
configured and connected such that the devices participate in parallel
operation.
7.5.3.1 Setting circulating reactive current sensitivity
This section describes how you set the circulating reactive current sensitivity
to check the function of the "circulating reactive current minimization" parallel
operation method.
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