Details - ABB RELION REB500 Operation Manual

Distributed busbar protection

Hide thumbs Also See for RELION REB500:

Table of Contents

1MRK 505 400-UEN B

6.2.2.1

Details

IEC18000465 V1 EN-US

Figure 14: Settings/Breaker failure protection - Details (L0 system activated)

In the Details view, the neutral system L0 of BFP can be activated and configured per bay by

selecting the checkbox Active for L0:

•

The current level for the BFP L0 is set independently from the phase setting.

•

Instead of external wiring of a fourth current input (L0), I0 can be calculated internally by

setting I0 calculated. This setting is mandatory for bay units that do not have a separate

L0 current input for neutral current measurement or use a metering transformer.

•

By selecting the Connect phase start signals check box all logical start signals for the BFP

phase system will be used to initiate the timer of the BFP L0 function.

•

Time step t1 L0 drop-down list is used to set the timer t1-L0.

Distributed busbar protection REB500

Technical manual

For considerations on the different possibilities to connect the BFP L0 system,

Application Manual .

see the

Additional protection options

GUID-5C3D7734-70AD-41BB-ADD3-8D8075FC3B3F v1

14000028-IEC18000465-1-en.vsdx

Section 6

Table of Contents