MR TRAFOGUARD ISM, Руководство по эксплуатации

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6 Functions and settings
Maschinenfabrik Reinhausen GmbH 2016 130 5163667/00 EN TRAFOGUARD® ISM®
To set the switch-on delay, proceed as follows:
1.
Go to Settings > Parameters > Cooling stage X > Switch-on delay .
2. Enter the value you want.
3. Press the Accept button to save the modified parameter.
Alternating mode
You can use this parameter to activate alternating mode [ ► 132] for the
cooling stage.
To activate alternating mode, proceed as follows:
1.
Go to Settings > Parameters > Cooling stage X > Alternating mode .
2. Select the option you want from the list box.
3. Press the Accept button to save the modified parameter.
Periodic mode
You can use this parameter to activate periodic mode [ ► 131] for the cool-
ing stage.
To activate periodic mode, proceed as follows:
1.
Go to Settings > Parameters > Cooling stage X > Periodic mode .
2. Select the option you want from the list box.
3. Press the Accept button to save the modified parameter.
Configuring load-dependent mode
In load-dependent mode all cooling stages are activated if the load current of
the transformer is greater than the set switching point. You can set the
switching point as a percentage in relation to the transformer rated current.
Once the switch-on delay has elapsed, the cooling stages are activated. To
limit the switch-on current of the cooling stages, they are activated one after
another with a delay time of 60 seconds.
The following parameters are available to configure the load-dependent
mode:
▪
Activate load-dependent mode
▪ Switching point: Switch-on threshold as percentage, in relation to rated
current of transformer.
▪ Switch-on delay: Delay time for switching on the first cooling stage.
▪ Overrun: Period for which the cooling stages remain switched on if the
transformer load current is again less than the set switching point.
6.10.2