Technical Data
기술적 데이터
02
8<< Vacuum Circuit Breaker Instruction Manual
2.3 Multiple Auto-Reclosing
HVF circuit breakers are capable of auto-reclosing and
can also be used for multiple reclosing for the following
operating sequence
O-0.3s-CO-3min-CO-15s-CO..... (O: tripping; C: closing)
2.4 Interlock Mechanism of the Draw-Out Type Breaker
The draw-out type circuit breaker has an interlock
mechanism which prevents trouble due to misoperation.
The sensing parts check the position of the circuit breaker
and prevent it from closing if the associated disconnector is
not allowed for safe operation.
2.5 Closing (Y9) and Anti-Pumping (K1)
When closing, authorization is applied through terminals
6 & 7 Solenoid Y9 fress the closing spring, and thus closes
the circuit breaker electrically.
Immediately after the breaker closes, Aux. S/W, S1 opens
the circuit of closing, and limit switch S3 and anti-pumping
relay K1 switch affect to Y9 so that they can not be
reactivated until the continuous closing command is
interrupted. Thus the breaker can meet the IEC
requirements for anti-pumping and trip-free opeation.
At the same time, the contact pressure spring is
compressed properly to maintain sufficient contact
pressure on the moving contact of the vacuum interrupters
while the breaker is in the closed position, and the tripping
spring is compressed for the opening operation.
2.6 Open Solenoid (Y1)
When the opening command is applied, the tripping spring
is unlatched by the trip solenoid Y1 and the force turns the
torque to rotate the brake shaft to make the opening
position. Immediately after the breaker is open, the
indicator displays the open state and Aux. S/W, S1 open
the opening circuit.
2.7 Auxiliary Switch (S1)
The standard auxiliary contacts for external connection are
composed of 4NO+4NC. These contacts are wired to the
control jack (XO).
Rated Insulation Voltage: AC/DC 250 V
Continuous Current: 10 A
Making Current: 30 A
Switching Current: 2 A at DC 220 V, =20 ms
The maximum connection 10NO+10NC is available on request.
2.3 다중 재투입
2.4 인출형 차단기의 인터록 장치
2.5 투입(Y9)와 재투입방지 회로(K1)
2.6 트립 솔레노이드(Y1)
2.7 보조 스위치(S1)
Misoperation or carelessness may result in
serious injury or property damage.
With the breaker closed, the draw in & out operation is
impossible. Do not push too hard on the breaker under
improper condition.
오조작, 또는 부주의가 중상 혹은 재산피해을 일으킬 수 있습니다.
