BECKWITH ELECTRIC Syncrocloser M-3410A Manuel - Page 6
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M‑5625 Digital Synchronizing System
Description
The M-5625 Syncrocloser Digital Synchronizing
System is suitable for the automatic synchronizing
of a generator to the electric power network. The
system provides speed and voltage "jogs" to bring
a generator to proper conditions of matching
voltage and frequency, prior to safely and
accurately closing a breaker into a bus energized
by an electric power network.
The Digital Synchronizing System is intended for
three general classes of application:
• Initial connection of a generator to a power
network as shown in Figure 1
POWER NETWORK
52G
GEN
Figure 1 Automatic Synchronizing of a Generator to a Power Network
The system can also be used for manual
synchronizing application. A typical Control Wiring
Diagram of Generator Synchronizing System is
illustrated in Figure 3.
AVR
GV
–6–
• Closure of a network breaker where
there is a possibility of a split of the
system into two isolated networks having
different frequencies
• Breaker closure applications with a static
phase angle (see Figure 2 Automatic
Synchronizing for Synchronous and
Asynchronous lines and Bus bars)
DIGITAL
SYNCHRONIZING SYSTEM
BUS VT
CLOSE
GEN/LINE VT
90R
90L
15R
15L