ABB RELION REB500 Commissioning Manual page 20

Distributed busbar protection version 8.3 iec

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Section 3

Commissioning

IEC18000345 V1 EN-US

Figure 4:

Any other protection devices in the same CT secondary circuit must not be influenced in any

way (for example, transformer differential protection or ground fault relays).

In the case of systems, that evaluate the neutral current, the differential current

of the neutral measurement must be checked as well. A neutral current has to

be simulated in a symmetrical power system to perform the stability test.

Testing the through-fault stability of the neutral circuit.

14000045-IEC18000345-1-en.vsd

Distributed busbar protection REB500

1MRK 505 401-UEN B

Commissioning manual

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