MR TRAFOGUARD ISM, Operating Instructions Manual

Page: 119 / 224

6 Functions and settings
Maschinenfabrik Reinhausen GmbH 2016 119 5163667/00 EN TRAFOGUARD® ISM®
Power monitoring
For monitoring of the transformer's current power, you can set the following
limit values:
Apparent power S<< S< S> S>>
Active power P<< P< P> P>>
Reactive power Q<< Q< Q> Q>>
Power factor cos phi<< cos phi< - -
Table 29: Limit values for power monitoring
You can set the following parameters for each limit value. A detailed descrip-
tion of the limit value concept and parameters can be found in the Limit val-
ues section.
▪
Limit value: Absolute limit value
▪ Hysteresis limit value
▪ Delay time limit value
If the limit value is exceeded, the device issues a message .
To set the power monitoring, proceed as follows:
1.
Go to Settings > Parameters > Power monitoring .
2. Select the parameter you want.
3. Set parameter.
4. Press the Accept button to save the modified parameter.
Bandwidth monitoring
The following limit values are monitored by the bandwidth monitoring. The
set bandwidth [
► 90] is used for this purpose.
▪ Upper bandwidth
▪ Lower bandwidth
You can set the following parameters for each limit value: A detailed descrip-
tion of the limit value concept and parameters can be found in the Limit val-
ues [
► 118] section.
▪ Hysteresis limit value: Input a percentage with reference to the desired
voltage value.
▪ Delay time limit value
If the limit value is exceeded, the device issues the Upper bandwidth limit
value/Lower bandwidth limit value message.
The "Function monitoring" function is used to detect long periods when val-
ues exceed or fall below the bandwidth. Long periods when values exceed
or fall below the bandwidth indicate a problem with the device function be-
cause the device is not able to correct the control deviation.
6.7.3
Behavior
6.7.4
Behavior