4.51
Date Code 20170814
Instruction Manual
SEL-700G Relay
Protection and Logic Functions
Group Settings (SET Command)
Figure 4.26
Zone 1 Compensator Element Logic
Figure 4.27
Compensator Distance Element Logic
Voltage-Controlled/Restrained Time-Overcurrent Elements
The SEL-700G provides a voltage-restrained phase time-overcurrent element
and a voltage-controlled phase time-overcurrent element. One of these
elements is typically used for system phase fault backup protection to trip the
generator in the event of an uncleared phase fault on the system side of the
step-up transformer.
1
I
NOM
is CT rating, 1 A or 5 A (X-CTs).
ABC1F and PP1F are values calculated by compensator distance element.
Zone 2 logic is similar to Zone 1.
2
SEL
OGIC
Setting
Relay
Word
Bits
Z1CD
0
Z2CD
0
Summary of Contents for SEL-700G Series
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