![background image](http://html.mh-extra.com/html/abb/rec650-ansi/rec650-ansi_technical-manual_2772191.webp)
ANSI08000013-2-en.vsd
VN
PU_ST1
TRST1
PU_ST2
TRST2
PICKUP
TRIP
Comparator
VN > Pickup1
Pickup
&
Trip
Output
Logic
Step 2
Phase 1
Phase 1
Timer
t2
PICKUP
Pickup
&
Trip
Output
Logic
Step 1
Time integrator
or Timer t1
Comparator
VN > Pickup2
PICKUP
TRIP
TRIP
OR
OR
ANSI08000013 V2 EN
Figure 75:
Schematic design of Two step residual overvoltage protection
(ROV2PTOV, 59N)
The design of Two step residual overvoltage protection (ROV2PTOV,
59N) is schematically described in
the three phase group signal V3P which shall be connected to output AI3P
of the SMAI. If a connection is made to the 4 input GRPx_N (x is equal to
instance number 2 to 12) on the SMAI, VN is this signal else VN is the
vectorial sum of the three inputs GRPx_A to GRPx_C.
1MRK 511 287-UUS A
Section 7
Voltage protection
185
Technical manual
Summary of Contents for REC650 ANSI
Page 1: ...Relion 650 series Bay control REC650 ANSI Technical manual ...
Page 2: ......
Page 42: ...36 ...
Page 60: ...54 ...
Page 66: ...60 ...
Page 424: ...418 ...
Page 566: ...560 ...
Page 636: ...630 ...
Page 699: ...693 ...