[dwrglchr-160913-01.vsd, 2, en_US]
Figure 8-112
Inverse Control Characteristic
Parameter: T1 Inverse Min
•
Default setting (_:116) T1 Inverse Min= 5 s
With the T1 Inverse Min parameter, you define the minimum time delay for the control action. This time
applies only to the control response Inverse and the response cannot be shorter.
Parameter: T2 delay
•
Default setting (_:117) T2 delay= 5 s
With the T2 delay parameter, you set the time the tap changer has to wait from one tap position to the
next. During this time, several adjusting commands can be sent to the tap changer in one direction, which
permits a correction of the actual voltage. The time delay T2 has an independent characteristic. The time T2 is
generally set shorter than the time T1. If the time T2 is switched off by a setting equal to 0, the delay T1 is
always active.
Parameter: Regulate with T2 at start
•
Default setting (_:14011:155) Regulate with T2 at start = on
With the Regulate with T2 at start parameter, you can activate a shorter time than T1. This can be
necessary for controlling a voltage recovery or after switching on a transformer. If voltage was not present
beforehand, this setting controls with the shorter time T2 when starting the control action. You can switch
this functionality on or off. If you always want to use the time T2 for control, you must set the
Block T1
controllable to On.
For the three-winding transformer, the address of the Regulate with T2 at start parameter is
_:15601:163 while it is _:16351:163 for the grid coupling transformer.
Parameter: Fast step down
•
Default setting (_:121) Fast step down = on
Parameter: Fast step down limit
•
Default setting (_:122) Fast step down limit = 6.0 %
Parameter: Fast step down T delay
•
Default setting (_:123) Fast step down T delay = 0.0 s
Control Functions
8.9 Voltage Controller
1218 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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