ABB RELION RET670 - Reactor Winding, Solidly Grounded

including the HV side, the neutral connection and the LV side. The connection of
REFPDIF (87N) for this application is shown in figure 64.
I3P
I3PW1CT1
I3PW2CT1
REFPDIF (87N)
ANSI05000212-4-en.vsd
ANSI05000212 V4 EN-US
Figure 64: Connection of restricted ground fault, low impedance function
REFPDIF (87N) for an autotransformer, solidly grounded
7.3.2.4 Reactor winding, solidly grounded
M13048-18 v10
Reactors can be protected with restricted ground fault protection, low impedance
function REFPDIF (87N). The connection of REFPDIF (87N) for this application is
shown in figure 65.
Section 7 1MRK 504 163-UUS A
Differential protection
180 Transformer protection RET670 2.2 ANSI
Application manual