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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.

현대 HVF 진공차단기는 견고한 기구부를 가지고 있어 유지 보수가 매우

간단합니다. 

보다 신뢰성 있는 사용을 위해 정상 동작 중 마모나 노화가 될 수 있는

부품에 대해서만 약간의 유지 보수가 필요한 정도입니다.  

유지 보수의 범위 및 점검 기간은 차단기의 상태, 주위환경 등 다음 사항에

따라 변할 수 있습니다.

�단락전류 차단 횟수

�개폐 횟수

�실사용 기간

�주위 환경

아래에 나타낸 점검주기는 대략적인 것이며, 특별한 동작이나 환경에 따라

변할 수 있습니다. 

정상적인 동작상태에서 진공밸브는 유지보수가 필요없습니다.

5.1 외관 점검

외관 점검은 차단기의 운전 상태에서 외관의 이상 유무를 수시로 점검하는

것입니다. 특히 먼지가 많은 곳에서 사용시에는 매년 절연물 등에 먼지의

부착 상태를 점검하여 이를 청소해야 합니다.

표 5-1은 외관 점검사항을 나타냅니다. 

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.

차단기를 "CONNECTION" 위치에서는 작업하지 마십시오.
스프링이 차지되었거나, 투입위치에서는 작업하지 마십시오.
차단기 주위에 공구를 놓아두지 마십시오.
보수 작업시에는 반드시 모든 제어전원은 공급되어서는
안됩니다.

Table 5-1 The visual inspection list / 표 5-1 외관 점검사항

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

검 사

차단기

CLOSE/OPEN 지시계가 제대로 작동하는지 검사한다.
차단기 주위 먼지나 습기 등의 여부를 검사한다.
차단기 주의 이상한 소리, 냄새, 변색 등의
여부를 검사한다.

스위치기어(Switchgear) 내부온도가 정상적인지 검사한다.

전압계를 이용하여 조작전압과 제어전압을 검사한다.

온도상승

제어전압

CAUTION

주 의

Summary of Contents for HVF Series

Page 1: ...it 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...

Page 2: ...ould 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 hazardo...

Page 3: ...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...

Page 4: ...stalling 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 Co...

Page 5: ...1141 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 H...

Page 6: ...xt 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 t...

Page 7: ...B Jack and 3 8 for C D Jack AC Option 1 A B Jack 21 22 C D Jack 3 8 M1 Motor operating mechanism K1 Anti pumping contactor R1 Resistor X0 Plug Connector Y1 Open solenoid Y2 2nd open solenoid Y4 C T op...

Page 8: ...he 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...

Page 9: ...e used as AC power supply connecting to the motor or closing circuit 2 8 AC Ry B1 B2 9 VCB HVF Series Fig 2 4 Condenser trip device 2 4 Fig 2 5 Circuit diagram of condenser trip device 2 5 This device...

Page 10: ...g 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 br...

Page 11: ...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 che...

Page 12: ...ress 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 Bus bar 3 5 1 2 3...

Page 13: ...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 Auxilia...

Page 14: ...essed 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...

Page 15: ...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 conne...

Page 16: ...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 pos...

Page 17: ...e 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 3...

Page 18: ...ition 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...

Page 19: ...ocker to the unlock state and pull the breaker out slowly The Head of Fixing Screw Improper operation of the breaker can cause product damage The breaker can be withdrawn if the head of the fixing scr...

Page 20: ...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 HVF 5 1 5 1 Failure to maintain the equ...

Page 21: ...re insulation resistance between phases and between pole earth with 1000 V megger if the measured value is less than 500 M check the cause 2 Check insulation resistance between control circuit and ear...

Page 22: ...Motor switch off Motor will not run Spring charged Closing spring not charged Breaker closed Breaker is not in proper position No electrical close signal Breaker open No electrical open signal Check...

Page 23: ...th to prevent any accumulation of dust or dirt Avoid any lubricant on insulation or other electrical parts Moving parts should then be moved slightly to let the grease penetrate and become properly di...

Page 24: ...01746 HVS01746 HVS01747 HVS01753 HVS01753 HVS01753 HVS01753 HVS01726 HVS01745 HVS01745 HVS01745 HVS01746 HVS01746 HVS01747 20 20 20 20 20 20 20 20 20 20 28 28 28 28 28 28 28 28 28 28 38 38 38 38 38 38...

Page 25: ...S02421 HVS02421 HVS02435 HVS03626 HVS03626 HVS03640 HVS03640 HVS03640 HVS01750 HVS01750 HVS01750 HVS01746 HVS03640 HVS03640 HVS03640 HVS03642 HVS03642 HVS03642 38 50 50 50 50 70 70 70 70 70 19 19 36 3...

Page 26: ...26 Vacuum Circuit Breaker Instruction Manual Maintenance Recording Maintenance Recording Sheet Date Signature Remarks Cost Free Engineer Service Agent The Substance of Service...

Page 27: ...27 VCB HVF Series Memo...

Page 28: ...Yurakucho Denki Bldg 1 7 1 Yuraku cho Chiyoda ku Tokyo 100 0006 Japan Tel 81 3 3211 4792 Fax 81 3 3216 0728 Osaka I Room 5th Floor Nagahori Plaza Bldg 2 4 8 Minami Senba Chuo ku Osaka 542 0081 Japan T...

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