ANSI08000013-1-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
t1
Comparator
VN > Pickup2
PICKUP
TRIP
TRIP
OR
OR
ANSI08000013 V1 EN
Figure 56:
Schematic design of Two step residual overvoltage protection
(ROV2PTOV, 59N)
The design of Two step residual overvoltage protection (ROV2PTOV,
59N) is schematically described in
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.
Section 8
1MRK 505 277-UUS C
Voltage protection
142
Technical Manual
Summary of Contents for REB650
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