KAVS Check synchronising relay Brochure0 pages
KAVS
Check synchronising relay
PROTECTION
The KAVS is a check synchronising relay for
feeders on transmission, sub-transmission
and distribution systems.
As a part of the K range of relays, the KAVS
can be integrated into an overall protection
and control system by utilising its integral
serial communications facility.
The KAVS checks that the voltage, phase
angle and frequency on either side of an
open circuit breaker are such that it is safe
to close. It provides the check synchronising
or dead line/bus interlocks required for
some auto-reclose applications. It also
provides split system detection and check
synchronising interlocks for manual
reconnection following a system split.
Two voltage phase angle comparators are
included, identical in operation, but having
different angle, slip frequency and timer
settings. This allows different check
synchronising conditions to be selected for
auto-reclosing and manual circuit breaker
closing. The phase angle comparator is
normally applied for auto-reclosing and the
system angle comparator for manual circuit
breaker closing.
Key features
■ Selectable undervoltage blocking and
differential voltage blocking features
■ Flexible operating logic options via
software function links
• Measurement of line and busbar voltage
system frequency and phase angle slip
frequency
• I EC 870-5 compatible communications via
K-Bus
• Integral event recorder accessible from a
remote PC
• Comprehensive self-checking and alarms
• Integral disturbance recorder accessible
from a remote PC
Models available
• KAVS100
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