Hyundai Heavy Industries HVF Series User manual
Notice
Read and understand these instructions before
attempting any unpacking, assembly, operation
or maintenance of the circuit breaker.
This instruction manual should be applied only
to HVF Series Vacuum Circuit Breakers.
This instruction manual does not include all
items regarding installation and maintenance
procedures.
For more information, please contact
authori ed partners.
HVF
HVF Series (IEC62271-100)
진공차단기
Vacuum Circuit Breaker
IInstruction Manual
2<< Vacuum Circuit Breaker Instruction Manual
Safety Practices
안전 조항
Safety Practices
This instruction manual applies only to HVF series vacuum
circuit breakers regarding installation and maintenance
procedures.
Installing and maintaining these products IMPROPERLY may
result in serious personal injury, property damage, or
death. Therefore this instruction manual must be read and
understood at every step in unpacking, assembly,
operation, and maintenance of the breaker.
Only qualified persons who are familiar with installing and
maintaining circuit breakers are permitted to work on
breakers, and this instruction manual should be accessible
to those persons at all times.
Signal Words
Signal words used in this instruction manual are
DANGER, WARNING and CAUTION in descending order of
urgency.
Indicates an imminently hazardous situation which, if
ignored, will result in death or serious injury.
Indicates a potentially hazardous situation, which, if
ignored, could result in death or serious injury.
Indicates a potentially hazardous situation, which, if
ignored, may result in minor or moderate injury. This signal
also warns operators to take extra care in their work.
Safety Practices During Moving
안전 조항
기호 설명
이동시 주의사항
When the breaker need to be moved on
a flat area, grab the handle and move
the breaker.
When the breaker is lifted by a rope, it
may lean to the terminal side. Take the
necessary precautions to prevent
damage to the unit and injury to
personnel.
>> 3
VCB |HVF Series
Safety Practices During Installation
Safety Practices During Operation
Safety Practices During Maintenance
설치(취부, 접속)시의 주의사항
동작시 주의사항
유지
보수시 주의사항
�Do not work on the breaker unless the
primary circuits are disconnected.
There is a damage of electric shock.
�When connecting bus-bars, tighten
bolts using our standards.
�The product should be installed and
tighened on the plate area.
�Do not install the breaker in areas with
high temperature, high humidity, dust,
corrosive or vibrating conditions.
�Concrete dust or any other dust should
not be inside the product when it
installed. It can cause fire or
malfunctions.
�Connect the control jack tight,
otherwise it can cause malfunctions
�Do not touch the main and control
circuit while the product is in operation.
The hazardous voltage can cause
electric shocks.
�Do not let the product stay in the
DISCONNECTION position with UNLOCK
state.
�If the heavy product dropped the
ground, it can cause the serious
accident or product damage.
�Before any maintenance, always open
the breaker and make sure that the
main and control circuits are not
charged.
The voltage can be hazardous.
�Discharge the springs and open the
breakers before performing any breaker
maintenance, inspection or repair.
Charged closing or tripping spring can
cause serious injury.
�Use the standard pressure torque to
tighten the bolts. Loosening the bolts
can cause fire.
�Replacing parts should be carried out
by our service agent.
�The breaker should not be used more
than its life time specified in catalogue.
4<< Vacuum Circuit Breaker Instruction Manual
Safety Practices 2
1. Production Scope 5
2. Technical Data 6
2.1 Service Conditions
2.2 Motor Drive
2.3 Multiple Auto-Reclosing
2.4 Interlock Mechanism of the Draw-Out Type Breaker
2.5 Closing (Y9) and Anti-Pumping (K1)
2.6 Open Solenoid (Y1)
2.7 Auxiliary Switch (S1)
2.8 Condenser Trip Device
2.9 Under Voltage Release (Y7)
2.10 2nd Open Solenoid (Y2)
2.11 Cutout Switch
2.12Closing Spring ChargeSignal
3. Handling and Installing the Breaker 11
3.1 Unloading and Storage
3.2 Unpacking
3.3 Inspection After Unpacking
3.4 Installation
3.5 Inspection Before Operation
3.6 Manual Operation
4. Structure and Operation 13
4.1 Component List of HVF VCB
4.2 Operation Mode
4.3 Draw In & Out Operation of HVF VCB
5. Maintenance and Inspection 20
5.1 Visual Inspection
5.2 Periodical Inspection
5.3 Contact Erosion
5.4 Trouble Shooting Guide
5.5 Lubrication
Appendix 24
Maintenance Recording 26
안전 조항
1. 제작 사양
2. 기술적 데이터
3. 취급설명
4. 구조 및 동작
5. 보수∙점검
부록
보수 점검
Contents
목차
HVF Type (HVF ����)
- Indicating process of the distance /
(Unit : mm)
- Type no. suffix in theshall be listed as shown in
the column of the rated, specification.
>> 5
VCB |HVF Series
Product Scope
제작 사양
01
630
(600)
1250
(1200) 2000 2500 3150
(3000) 4000
7.2
12
17.5
24
36
4.76
15
38
25
31.5
40
50
25
31.5
40
50
25
31.5
40
12.5
25
25
31.5
40
50
31.5
40
20
ANSI C.37
60
28 75
38 95
50 125
70 170
19 60
36 95
80 150
HVF1141 C
HVF1151 D
HVF2141 C
HVF2151 D
HVF3141 C
HVF3151 D
HVF6111 F
HVF6141 F
HVF1142 C
HVF1152 D
HVF1162 D
HVF1172 F
HVF2142 C
HVF2152 D
HVF2162 D
HVF2172 F
HVF3142 C
HVF3152 D
HVF3162 D/F
HVF6112 F
HVF6142 F
HVF7142 I
HVF7052 I
HVF1372 E
HVF3362 H
HVF7052 I
HVF7062 I
A
130
B
140
C
150
D
165
E
178
F
210
G
250
H
254
I
275
J
300
K
350
HVF1154 D
HVF1164 D
HVF2154 D
HVF2164 D/F
HVF3154 D
HVF3164 D/F
HVF6144 F/I
HVF7144 I
HVF1374 E
HVF3364 H
HVF7054 I
HVF7064 I
HVF1166 F/I
HVF1176 I
HVF2166 F/I
HVF2176 I
HVF3156 F
HVF3166 F/I
HVF6146 I
HVF7056 I
HVF1167F/I
HVF1177 I
HVF2167 F/I
HVF2177 I
HVF3167 F/I
HVF6147 I
HVF7057 I
HVF1377 H
HVF3367 H
HVF7057 I
HVF7067 I
HVF1168 I
HVF1178 I
HVF2168 F/I
HVF2178 I
HVF3168 I
HVF1378 H
IEC62271-
100
2.1 사용 조건
2.2 모터 동작
Technical Data
기술적 데이터
02
6<< Vacuum Circuit Breaker Instruction Manual
2.1 Service Condition
1) Site altitude: Less than 1000 m
2) Relative humidity: Less than 95%
3) Ambient temperature: MAX 40°C / MIN -5°C
2.2 Motor Drive
HVF VCB have motor-spring type stored-energy operating
mechanism. The closing operation can be done only after
the closing spring is charged.
Consumption during the operation is shown in Table 4, and
the inrush current may be disregarded since it lasts for only
a brief period.
The closing spring is fully tensioned by motor (M1) with the
rated voltage applied through terminal No.1 & 2 of standard
control circuit. Then the limit switch (S21, S22) stops the
motor, and the spring indicator shows "SPRING CHARGED"
by link activation as shown in Fig.1. The charged VCB can
carry out the open-close-open sequential operation and
also the next close-open operation without delay.
Consideration of site altitude!
If the site altitude is higher than 1000 m, dielectric
strength of the breaker will be reduced according to
the altitude. Therefore, the values of power frequency
withstand voltage and lightning impulse withstand
voltage should be selected.
Rated withstand voltage according to rated voltage
X k (k: Refer to table 2-1.)
For higher humidity, it is required to use a heater in the
switchgear to prevent dewdrops on the insulation
material and the consecutive decrease in dielectric strength.
1000 m 1500 m 2000 m 2500 m 3000 m
1.0 1.05 1.1 1.15 1.2
24 DC
48 DC
(60 DC)
110 DC
220 DC
110 AC
220 AC
25.6
53
(66)
121
242
121
242
20
41
(51)
93.5
187
93.5
187
500
500
(500)
500
500
-
-
-
-
-
-
-
700
700
25
15
(12)
7.5
3.5
8.5
4.5
30
20
(15)
10
5
10
10
고도에 따른 전압 정정!
>> 7
VCB |HVF Series
Note - Extended circuit spec & connection line number are
defined by user's request.
- For the AC control circuit, the rectifier should be
attached on the standard circuit.
- Standard contacts can be insufficient on the request of
the extended circuit.
- In case of 1 option applied, the numbers are 21, 22 for
A, B Jack and 3, 8 for C, D Jack.
M1 Motor operating mechanism
K1 Anti-pumping contactor
R1 Resistor
X0 Plug Connector
Y1 Open solenoid
Y2 2nd open solenoid
Y4 C.T. operated release
Y7 Under-voltage release
Y9 Closing solenoid
S1 Auxiliary switch
S3 Limit switch (K1 Control)
Limit switch supplied with the lockout
S5 (Prevents closing by electrical means when
Lock-out effective)
S6, S7 Cutout switches
S21, S22
Limit switches
(Interrupt motor circuit after spring charged)
S41, S42 Position switch (spring charged status signal)
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.
2.8 Condenser Trip Device
It is recommended to employ the capacitor trip unit for a
trip operation of the breaker when the control source is
lost in the AC control system.
The contacts B1, B2 of auxiliary relay are connected with
tripping push button as shown below. The breaker can be
opened automatically in case of power failure and
terminals 5, 7 can be used as AC power supply connecting
to the motor or closing circuit.
2.8 콘덴서 트립 장치
>> 9
VCB |HVF Series
This device maintains the voltage for 60 seconds
which can trip the breaker just one time.
It cannot be operated properly if used for other
purposes or if the circuit is modified without the
agreement of the manufacturer.
Technical Data
기술적 데이터
02
10 << Vacuum Circuit Breaker Instruction Manual
2.9 Under Voltage Release (Y7)
The UVR (Y7) having a spring-energy storing mechanism, is
used for the continous monitoring of circuits, and can open
the circuit breaker automatically when the control voltage
drops lower than the drop-out voltage.
The latching mechanism of the release can be excited to
hold the closing condition of the circuit breaker when the
control voltage rises above the pick-up voltage.
Drop-out voltage: 35~60% of rated control voltage
Pick-up voltage: 75~85% of rated control voltage
If it is necessary to lock the automatic tripping function of
the release at the lower control voltage, you can place the
lock-screw as shown in Fig. 2-6.
The release can be operated again by shifting the screw
down as shown in Fig. 2-7.
2.10 2nd Open Solenoid (Y2)
The 2nd trip solenoid (Y2) can be attached to the HYUNDAI
HVF circuit breaker putting aside the 1st trip solenoid (Y1),
so that the circuit breaker can be opened safely.
2.11 Cutout Switch
The cutout switch consists of two limit switches, which are
connected in series with the impulse contact of the
auxiliary switch in the alarm circuit.
When the VCB is opened locally, the cutout switch
interrupts the tripping signal.
Closing time of impulse contact is more than 10 ms.
2.12 "Closing Spring Charge" Signal
Using the auxiliary switches S41, S42 operated by the
closing spring, the spring charged indicator is displayed for
visual checking.
2.9 부족전압 Release(Y7)
2.10 2차 트립 솔레노이드(Y2)
2.11 컷아웃 스위치
2.12 “투입 스프링 차지”신호
3.1 Unloading and Storage
When unloading from the vehicle, avoid turning it over.
Special care should be taken to avoid shocks.
If vacuum circuit breakers must be stored prior to use, they
should be stored only in dry, dust-free and well ventilated
rooms, with the breakers in the open position and the
stored-energy spring mechanism in the released position.
3.2 Unpacking
When opening the package, also avoid turning it over and
special care should be taken to not damage the breaker.
Carefully handle the insulated parts, vacuum interrupters,
main circuit, disconnecting unit, front panel and so on.
3.3 Inspection After Unpacking
1) Check the type rating and quantities with the
specification sheet.
2) Check the circuit breaker for any damage or missing
materials
3) Check all accessories and spares supplied. Also, check to
see if these parts are damaged.
3.4 Installation
Before installing the circuit breaker into the switchgear,
check the type rating and for any signs of damage again.
Wipe the breaker with a dry cloth to remove dirt and dust.
Mount the draw-out unit (if it is used) on a level floor by
means of screwing through the mounting holes on the
bottom. The tolerance on the level should be within
1mm. If required, adjust the level using a liner.
3.1 운송 및 보관
3.2 포장해체
3.3 포장해체 후 점검사항
3.4 Switchgear에 설치
>> 11
VCB |HVF Series
Handling and Installing the Breaker
취급설명
03
Excessive weight will cause the serious injury,
property damage, or even death.
To avoid this situation, do not transport a circuit
breaker on a lift truck or other lifting facility in the
raised position.
과도한 무게가 나가는 제품은 중상, 재산파괴, 혹은 사망을
일으킵니다.
12 << Vacuum Circuit Breaker Instruction Manual
Wipe the connecting surface with a dry cloth to remove dirt
and dust before connecting main circuit bus bars and earth
terminal, and be careful not to shock the draw-out unit and
breaker.
3.5 Inspection Before Operation
(1) Check to see if the breaker is installed properly.
(2) Operate the breaker a few times manually to ensure that
the breaker is closed and opened smoothly. Then, operate
the breaker using the motor operating mechanism with
the auxiliary power, and check the CLOSE/OPEN indicator
and charged state of the closing spring.
(3) Check that no tools and materials are left near the breaker.
(4) Ground all possible parts of circuit breaker.
3.6 Manual Operation
(1) Insert the handle-crank in the hole and turn it clockwise
until the indicator displays spring charged " ".
(2) Press the "CLOSE" button. Be sure to check that the breaker
is closed and the CLOSE/OPEN indicator displays close " I ".
(3) Press the "OPEN" button. And be sure to check that the
breaker is opened and the CLOSE/OPEN indicator
displays open " "
(4) Finally, check that no tools and materials are left near
the breaker.
3.5 운전 전 점검사항
3.6 차단기의 수동 조작 설명
Handling and Installing the Breaker
취급설명
03
Charged closing or tripping spring can cause
serious injury.
To avoid this situation, always be attentive to the
mechanism of sudden movement before taking any
action on the circuit breaker. Discharge the springs
and open the breakers before performing any breaker
maintenance, inspection or repair.
차지된 투입, 트립 스프링은 중상을 일으킬 수 있습니다.
Note Refer to our catalogue "HVF Vacuum Circuit Breaker"
for mounting hole sizes of the each draw-out unit and
earth terminal's size.
Heavy weight!
Please use lifter to remove or install the breaker in the
upper position of the switchgear.
Do not stand below the lifted breaker.
과도한 무게가 나가는 제품은 중상, 재산파괴, 혹은 사망을 일으킵니다.
4.1 Component List of HVF VCB
4.1 HVF 차단기의 구조 및 부품표
>> 13
VCB |HVF Series
Structure and Operation
구조및동작
04
50 Vacuum Interruptor covered
with the Insulation Frame
10 Housing Box
11 Closing Mechanism
12 Closing Spring
13 Trip Spring
14 Link
15 Coupling Bar
16 Breaker Shaft
17 Dash Pot
18 Counter
19 CLOSE/OPEN Indicator
20 Spring Charged Indicator
21 Closing Button
22 Trip Button
23 Name Plate
24 Hole for the charging handle
31 Motor
32 Closing Solenoid
33 Trip Solenoid
34 Limit Switch (S3, S21, S22)
35 Anti-Pumping Contact (K1)
36 Auxiliary Switch (S1)
41 Upper Female Arm
42 Lower Female Arm
43 Tulip Contact
44 Insulation Frame
45 Insulation Frame Cap
46 Rear Silicon Cover
47 Truck for moving VCB
48 Warning Sticker for Draw-Out
49 Front Cover
14 << Vacuum Circuit Breaker Instruction Manual
Structure and Operation
구조 및 동작설명
04
항목
4.2 Operation Mode
1) Charging
When the charging mechanism is
activated by hand or motor (31),
the charging shaft (11-1) turns by
the gears and the driver (11-2) so
that the closing spring (12) is
tensioned. When the closing
spring is fully tensioned, the
closing pawl (11-3) latches
closing spring .
2) Closing
When closing command is
applied, the closing spring is
unlatched by the activation of
the closing pawl. Through the
energy from the discharging of
the closing spring, the coupling
bar is powerfully pushed down
via the charging shaft and the
cam.
Consequently, the breaker shaft
is turned until the moving
contact is fully closed and
latched by the trip pawl (25-1).
At the same time, the contact
pressure spring (49) is
compressed to insure sufficient
contact pressure on the moving
contact while the breaker is in
the closed position, and the
tripping spring (13) is
compressed for the opening
operation.
3) Recharging
After the closing operation, the
closing spring can be
immediately recharged by a
motor (31) or hand so that the
breaker immediately re-closes
in case the closing authorization
re-close is applied.
4) Tripping
When opening command is
applied, the tripping spring is
unlatched by the activation of
the trip pawl, and the breaker
shaft is returned to the open
position.
11-1
11-2
12
31
11-3
11
25-1
33
16
49
4.2 동작 설명
1) 차징
2) 투입
3) 재투입 대기
4) 트립
Charging
Tripping
Closing
Recharging
>> 15
VCB |HVF Series
항목
Hazardous High Voltage will cause serious injury,
property damage, or death.
Before inserting or withdrawing, the breaker should be
open. Before turning the handle, lift up the interlock
handle. If excessive power is applied to the handle
when the breaker is closed or the interlock handle is
not lifted up, it can cause damage to the breaker.
Make sure that the breaker and cradle have same
rating when inserting and withdrawing the breaker.
The sticker and name plate with rating are attached on
the product.
고전압은 중상, 재산피해, 혹은 사망을 일으킵니다.
차단기와 크레들의 사양이 일치하는지 반드시 확인하여 주십시오.
Excessive weight can cause serious injury or damage.
To avoid this situation, DO NOT transport the breaker
on a lifting facility in the raised position
과도한 무게가 나가는 제품은 심각한 인명피해, 기타 사고를
일으킬 수 있습니다.
4.3.1. ES/FS Type
4.3 HVF 차단기의 인출입 방법
4.3.1. ES/FS Type
1) Check the condition of the breaker.
Check the breaker is opened before
inserted into the switchgear or cradle.
2) Insertion to the disconnection position
Insert the breaker to the cradle at
disconnection (or test) position.
At this time, push down the interlock
lever fully for easy insertion. Check that
the wheels of the breaker are
inserted into the cradle as fig 4-8.
3) Insertion to the connection position
After checking to see if the breaker is
opened at the disconnection position,
insert the crank handle to the hole to
draw in and out. Push the interlock down
fully. Then, push up the crank handle to
the breaker so that the breaker moves to
the connection position.
If the breaker is in the connection
position as in fig 4-6b, the interlock pin
drops down into the lock hole and
interlock lever comes back to the initial
position.
At this time, check that interlock pin
makes the locking sound
"knocking or click".
Finally, push the interlock lever times to
check the movement.
4.3 Draw In & Out Operation of HVF VCB
HYUNDAI HVF Type Vacuum circuit breakers have several
versions of draw-out mechanisms and the breaker types
which were produced according to customer requests. The
following procedure is for the circuit breaker of our standard
version having worm and wormgear type draw-out
mechanism. For instructions on nonstandard version, please
contact us.
16 << Vacuum Circuit Breaker Instruction Manual
Hazardous high voltage will cause serious injury,
property damage, or even death.
Before inserting or withdrawing, the breaker should be
open, and also before turning the handle, the manual
locker should be in the unlock position.
If excessive power is applied to the handle when the
breaker is closed, it can cause damage to the product.
고전압은 중상, 재산피해, 혹은 사망을 일으킵니다.
Excessive weight can cause serious injury or damage.
To avoid this situation, do not transport the breaker on
a lifting facility in the raised position
과도한 무게가 나가는 제품은 심각한 인명피해, 기타 사고를
일으킬 수 있습니다.
4.3.2. SF/GS Type
4) Withdrawing the breaker
After checking that the breaker is
opened, insert the crank handle in the
hole and push the interlock lever down
fully.
Then, push the crank handle down
against the breaker so that the breaker
goes to the disconnection position.
4.3.2. SF/GS Type
1) Check the condition of the breaker
Check the breaker is open before
inserted to the switchgear or cradle.
2) Insertion to the disconnection position
Insert the breaker to the cradle at
disconnection (or test) position.
At this time, push down the close button
fully for the breaker insertion.
Check that the wheels of the breaker is
exactly inserted to the cradle as in fig 4-8.
Structure and Operation
구조및동작
04
Make sure that the breaker and cradle have the
same rating when inserting and withdrawing the
breaker.
The sticker and name plate with rating are attached to
the product.
차단기와 크레들의 사양이 일치하는지 반드시 확인하여
주십시오.
3) Insertion to the connection position
After checking to see if the breaker is
opened at the disconnection position,
insert the crank handle to the hole to
draw in and out. After rotating handle
about 40~50 times clockwise, the breaker
goes to the connection position.
At this time, check the sticker at the
cradle base and push the close button for
VCB insertion.
The circuit breakers does not make any
rattling noise so the operate does not
have to rotate the crank with force.
4) Withdrawing the breaker
After checking that the breaker is
opened, insert the crank handle in the
hole to draw in and out.
Rotate handle about 50 times
counterclockwise.
If operator pulls the center handle out,
interlock will be released and the breaker
will be fully separated from cradle.
>> 17
VCB |HVF Series
Excessive weight can cause serious injury or damage.
To avoid this situation, do not transport the breaker on
a lifting facility in the raised position
과도한 무게가 나가는 제품은 심각한 인명피해, 기타 사고를
일으킬 수 있습니다.
Make sure that the breaker and cradle have the
same rating when inserting and withdrawing the
breaker.
The sticker and name plate with rating are attached to
the product.
차단기와 크레들의 사양이 일치하는지 반드시 확인하여
주십시오.
18 << Vacuum Circuit Breaker Instruction Manual
Excessive weight can cause serious injury or
damage.
To avoid this situation, do not transport the breaker
on a lifting facility in the raised position
과도한 무게가 나가는 제품은 심각한 인명 피해, 기타 사고를
일으킬 수 있습니다.
Make sure that the breaker and cradle have the
same rating when inserting and withdrawing the
breaker.
The sticker and name plate with rating are attached to
the product.
차단기와 크레들의 사양이 일치하는지 반드시 확인하여 주십시오.
4.3.3. 특수형 GS Type
4.3.4. MS Type
4.3.3. Special GS Type
1) Check the condition of the breaker
Check the breaker is opened before
inserting into the switchgear or cradle.
2) Insertion into the disconnection position
After lifting the center handle, the
operator can push the breaker to the
cradle until it makes a locked sound.
3) Insertion into the connection position
Same as the SF/GS type method.
4) Withdrawing the breaker
After checking that the breaker is
opened, insert the crank handle in the
hole to draw in and out.
After rotating handle about 40~50 times
counterclockwise the operator can pull
the center handle out.
Interlock will be released and the breaker
will be fully separated from the cradle.
4.3.4. MS Type
1) Checking before inserting the breaker in
to the switchgear
Before putting the breaker into the cradle
or switchgear, check whether all parts of
the breaker are in the right position as
follows.
- CLOSE/OPEN indicator :
displays "OPEN"
- Position indicator:
displays "DISCONNECTION"
- Manual locker :
in "UNLOCK" position
Structure and Operation
구조및동작
04
>> 19
VCB |HVF Series
2) Inserting into the disconnection position
Put the breaker to the switchgear or
cradle and push it slowly until it stops.
When it stops, set the manual lock handle
to the LOCK position. This is the
disconnection position.
3) Inserting into the connection position
After checking that the breaker is open in
the disconnection position, insert the
handle into the head of the fixing screw
and turn it in a clockwise direction so that
the breaker moves to the connection
position.
When the breaker is in the connection
position check that the position indicator
displays "CONNECTION."
4) Withdrawing the breaker
First of all, open the breaker and put the
handle into the head of the fixing screw
and turn in a anticlockwise direction to
withdraw the breaker.
The position indicator will display
"DISCONNECTION" when the breaker
reaches the disconnection position.
To withdraw the breaker fully from the
cradle, put the manual locker to the
unlock state and pull the breaker out
slowly.
Improper operation of the breaker can
cause product damage.
The breaker can be withdrawn if the head
of the fixing screw isn't inserted in the
proper position.
Also, after withdrawing the breaker into the
disconnection position, the head of the
fixing screw must be in the proper position.
Otherwise the manual locker cannot move
to the unlock position.
Always check the location of fixing screw
for precise operation of the breaker.
차단기를 올바르게 조작하지 않을 시에는 제품의
파손을 일으킬 수 있습니다.
20 << Vacuum Circuit Breaker Instruction Manual
Maintenance and Inspection
보수∙점검
05
HYUNDAI HVF Vacuum Circuit Breakers require little
maintenance because of their simplified operating
mechanisms and robust construction.
In fact, only the parts subject to normal wear and aging
need be serviced to ensure fully reliable service.
The interval at which these jobs should be carried out and
the amount of work involved depend upon
The number of short circuit interruptions
The switching frequency
The actual service time
Environmental conditions
The service intervals indicated below are only approximate
and should be adjusted to suit particular operation or
environmental conditions.
Under normal conditions the vacuum interrupters need not
be serviced.
5.1 Visual Inspection
The purpose of visual inspection is to check the exterior of
the breaker in usual operation. Once a year, a general
visual inspection is to be carried out. The outer insulation
parts should be wiped with a rag more frequently if the
breakers are exposed to dust.
5.1 외관 점검
Failure to maintain the equipment could result in
death, serious injury or product failure and can
prevent successful functioning of the connected
apparatus.
Do not work on a breaker in the "CONNECTION" position.
Do not work on a breaker with springs charged or
contacts closed.
Do not leave maintenance tools around the breaker.
While the work is in progress, all auxiliary voltage
sources must also be disconnected.
부적절한 유지보수는 치명적인 인명피해, 재산손실과 제품의 오
동작을 일으킬 수 있습니다.
Inspection
Circuit
breaker
Check if CLOSE/OPEN indicator is normal
Check for the presence of dust or moisture
Check for unusual noise, smell or discoloration
Check inside of the switchgear for normal
temperature.
Check main-circuit terminals for discoloration
or traces of overheating.
Check the operating voltage and the control
voltage with voltmeter.
Temperature
rise
Control
voltage
Description
This manual suits for next models
73
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