Schweitzer Engineering SEL-351P - Synchronism Check Elements Voltage Inputs; Synchronism Check Elements Operation

3-38 Overcurrent, Voltage, Synchronism Check, and Frequency Elements Date Code 990430
SEL-351P Manual Técnico
Figure SECTION 3: .25: Synchronism Check Elements
Synchronism Check Elements Voltage Inputs
The two synchronism check elements are single-phase elements, with single-phase voltage inputs
V
P
and V
S
used for both elements:
V
P
Phase input voltage (V
A
, V
B
, or V
C
), designated by setting SYNCP (e.g., if
SYNCP = VB, then V
P
= V
B
)