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