![background image](http://html1.mh-extra.com/html/abb/rec650-ansi/rec650-ansi_applications-manual_3390438119.webp)
The protection measures the residual current out on the protected line. The protection
function has a directional function where the residual voltage (zero-sequence voltage) is
the polarizing quantity.
The residual voltage and current can be internally generated when a three-phase set of
voltage transformers and current transformers are used.
xx05000149_ansi.vsd
67N
ANSI05000149 V1 EN
Figure 45:
Connection of polarizing voltage from an open (ANSI-broken) delta
The different steps can be described as follows.
Step 1
This step has directional instantaneous function. The requirement is that overreaching of
the protected line is not allowed.
1MRK 511 286-UUS A
Section 6
Current protection
113
Application manual
Summary of Contents for REC650 ANSI
Page 1: ...Relion 650 series Bay control REC650 ANSI Application manual...
Page 2: ......
Page 26: ...20...
Page 66: ...Section 3 1MRK 511 286 UUS A REC650 setting examples 60 Application manual...
Page 71: ...IED IED ANSI05000460 V2 EN 1MRK 511 286 UUS A Section 4 Analog inputs 65 Application manual...
Page 82: ...76...
Page 92: ...86...
Page 170: ...164...
Page 176: ...170...
Page 274: ...268...
Page 288: ...282...
Page 350: ...344...
Page 369: ...363...