Setting parameters need to be calculated according to the electrical network conditions
and the electrical characteristics of the protected equipment. The protection relay's
settings need to be verified before the protection relay is connected to a system.
Document all changes to parameter settings.
For more information, see the PCM600 documentation.
8.5.3.3 Defining DFR channel settings
1. Select Main Menu/Configuration/DFR/Channel settings.
2.
Press or to select the wanted channel and parameter.
3.
To change channel settings, press .
Analog channels are fixed except channel 4 which is selectable based on the Ground CT
option.
8.5.3.4 Configuring analog inputs
1. Select Main Menu/Configuration/Analog inputs.
2.
Select the analog input to be configured with
or .
3.
Press , change the value with or and press again.
• For CTs, the secondary current and primary current need to be set to the correct
values.
8.6 Testing protection relay operation
The protection relay has to be in the test mode before the digital outputs and certain output
signals of protection and other functions can be activated.
1MAC456939-IB D Section 8
Commissioning
620 series ANSI 135
Operation Manual
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