ABB Relion 670 Series Technical Reference Manual page 517
Line differential protection ansi
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Applications manual (944 pages) ,
- Technical reference manual (752 pages)
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1MRK505222-UUS C
Technical reference manual
V
a
a>b
Vpickup>
b
ANSI10000100 V2 EN
Figure 260:
Detailed logic diagram for step 1, DT operation
Pickup1
PICKUP
TRIP
tReset1
t1
ANSI10000037 V2 EN
Figure 261:
Example for Definite Time Delay stage rest
tReset1
t1
t
t
OFF
ON
Delay
Delay
Section 8
Voltage protection
PU_ST1
TRST1
AND
ANSI10000100-2-en.vsd
ANSI10000037-2-en.vsd
511
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