Prime-MEC LS HRC Power Fuses

Transcription

1 Prime-MEC LS HRC Power Fuses

2 Current without Power Fuse (ka ms) Ipeak Let through current Below 0.5 Cycle Rated voltage(kv) Initiation of arcing(degree) Ipeak(kA) Power Factor 0.07 ~ 0.5 Test current : ka Basis : 3A I peak : Let through current(under the short circuit test)

3 Features The LS HRC Power Fuses belong to the PRIME MEC series. It interrupts high currents before the first loop of fault current has reached its natural peak value and therefore cuts down the required withstand capacity of the associated equipment on the electric system. Though small in size, it has a high breaking capacity and its enclosed type is suitable for use inside of the panel board. PRIME MEC fuses are equipped with striker pins for trip indicators as well as for operating the related load break switches. Link type fuse holder enables easy maintenance and high stability when replacing the fuses. With Fuse Checker, checking the conditions of a fuse in the panel board or by telecommunication is possible.(optional) Applied standards IEC -, DIN 35, BS 9, KSC Applications Transformer protection - To protect against short circuit current in the secondary part of a transformer and fault current in the transformer circuit. Condenser protection - To protect against fault current in the condenser circuit. Motor protection - To protect against fault current in the motor circuit Cable protection - Fault current protection secures the cable

4 LS HRC Power Fuses Ratings Type LFL-3/G-5B LFL-3/G-B LFL-3/G-B LFL-3/G-30B LFL-3/G-B LFL-3/G-50B LFL-3/G-0B LFL-3/G-75B LFL-3/G-0B LFL-3/G-5B LFL-3G-0B LFL-3G-0B LFL-G-0B LFL-G-0B LFL-G-5B LFL-G-B LFL-G-B LFL-G-B LFL-G-5B LFL-G-30B LFL-G-B LFL-G-50B LFL-G-0B LFL-G-75C LFL-G-0C LFL-G-5B LFL-G-0B LFL-G-0B Rated voltage (kv) 3./ Rated current (A) Fuse link Dimensions Weight A B (kg) Breaking current (ka, rms) 5 Minimum breaking current (A) 5In 5In In Type LFH-G-DHB LFH-G-DHB LFH-G-DHB LFH-G-DHC Fuse holder Rated voltage (kv) 7. 0 Rated current (A) Insulation level (BIL, kv) 5 Note). Application site : Indoor use. Refer to the column "B" in the table for inside diameters of Hook rings 3. Models highlighted can be applied to 3. or 7.kV 3

5 Conditions of selection Basic conditions for selecting the Power Fuses The rated current of a Power Fuse should be higher than sum of the total rated current of the electric equipment on the circuit. Back-up protection with electric equipment on the circuit. - Set the operating characteristics of the Power Fuses to satisfy the over-current characteristics of the protected loads on the circuit. Also, set the occurred calories, by the l t operation, to be smaller than the short-circuit intensity of the electric equipment and circuit. - When using the Power Fuses for backup usage with other protective equipment, set the operating times of the protective equipment below the minimum breaking current to be faster than those of the Power Fuses. For transformer protection Circuit Transformer Circuit Transformer Circuit Transformer Phase voltage capacity Applied fuses voltage capacity Applied fuses voltage capacity Applied fuses (kv) (kva) (kv) (kva) (kv) (kva) ~ LFL-3/G-5B ~ LFL-3/G-5B ~3 LFL-G-5B ~3 LFL-3/G-B 3~5 LFL-3/G-B 3~90 LFL-G-B ~0 LFL-G-B 5~3 LFL-3/G-B 30~ LFL-3/G-B 99~ LFL-G-B ~9 LFL-G-5B ~ LFL-3/G-30B ~ LFL-3/G-30B 9~3 LFL-G-30B ~ LFL-3/G-B 0~5 LFL-3/G-B 7~557 LFL-G-B ф 3.3 9~ LFL-3/G-50B. 9~ LFL-3/G-50B.9 35~79 LFL-G-50B ~37 LFL-3/G-0B 3~75 LFL-3/G-0B 30~97 LFL-G-0B 3ф 3.3 ~5 LFL-3/G-75B 3~330 LFL-3/G-75B 50~5 LFL-G-75B ~ LFL-3/G-0B 5~ LFL-3/G-0B 93~57 LFL-G-0B 5~75 LFL-3/G-5B 30~550 LFL-3/G-5B 3~90 LFL-G-5B ~35 LFL-3/G-0B 5~70 LFL-3/G-0B 5~3 LFL-G-0B 5~ LFL-3/G-0B 37~0 LFL-3/G-0B 50~3050 LFL-G-0B.7~ LFL-3/G-5B 3~ LFL-3/G-5B 3~75 LFL-G-5B ~ LFL-3/G-B ~ LFL-3/G-B 75~57 LFL-G-B ~33 LFL-G-B 5~53 LFL-3/G-B 5~7 LFL-3/G-B 7~35 LFL-G-B ~ LFL-G-5B 35~73 LFL-3/G-30B 70~5 LFL-3/G-30B 5~53 LFL-G-30B 9~3 LFL-3/G-B 37~ LFL-3/G-B ~95 LFL-G-B 5~77 LFL-3/G-50B. 70~35 LFL-3/G-50B.9 59~ LFL-G-50B ~3 LFL-3/G-0B 9~7 LFL-3/G-0B 75~55 LFL-G-0B 7~5 LFL-3/G-75B 33~57 LFL-3/G-75B 00~93 LFL-G-75B ~3 LFL-3/G-0B 3~7 LFL-3/G-0B 00~5 LFL-G-0B ~7 LFL-3/G-5B 5~95 LFL-3/G-5B 3~330 LFL-G-5B 35~ LFL-3G-0B 735~ LFL-G-0B 30~3 LFL-G-0B 59~7 LFL-3G-0B 755~5 LFL-G-0B 593~57 LFL-G-0B Selecting conditions The inrush current of a transformer is selected assuming that the current is time that of the full-load transformer current in 0.sec. The rated current of the Power Fuses is selected to continuously flow at.5time of the transformer rated current. Power Fuses for proteting against short-circuit in the secondary part of a transformer are selected assuming that the current is 5times that of the transformer rated current in seconds. Note). Models highlighted can be applied to 3. or 7.kV

6 LS HRC Power Fuses Conditions of selection For condenser protection Circuit Transformer Circuit Condenser Circuit Condenser Phase voltage capacity Applied fuses voltage capacity Applied fuses voltage capacity Applied fuses (kv) (kva) (kv) (kva) (kv) (kva) ~9. LFL-3/G-5B ~9 LFL-3/G-5B ~ LFL-G-5B 9.~ LFL-3/G-B 9~ LFL-3/G-B ~3 LFL-G-B ~7 LFL-G-B ~3 LFL-3/G-B ~ LFL-3/G-B 3~3 LFL-G-B ~7 LFL-G-5B 3~ LFL-3/G-30B ~9 LFL-3/G-30B 3~37 LFL-G-30B 3ф 3.3 ~ LFL-3/G-B. 9~ LFL-3/G-B.9 37~5 LFL-G-B Selecting conditions ~ LFL-3/G-50B ~3 LFL-3/G-50B 5~5 LFL-G-50B ~5 LFL-3/G-0B 3~ LFL-3/G-0B 5~7 LFL-G-0B 5~50 LFL-3/G-75B ~300 LFL-3/G-75B 7~ LFL-G-75B 50~ LFL-3/G-0B 300~5 LFL-3/G-0B ~55 LFL-G-0B ~75 LFL-3/G-5B 5~550 LFL-3/G-5B 55~370 LFL-G-5B 75~370 LFL-3G-0B 550~7 LFL-G-0B 370~370 LFL-G-0B 370~500 LFL-3G-0B 7~00 LFL-G-0B 370~00 LFL-G-0B The inrush current of a condenser is selected to withstand 7time of the condenser rated current in 0.00sec. The rated current of the Power Fuses is selected to continuously flow at.3 times of the condenser rated current. Note). Models highlighted can be applied to 3. or 7.kV For motor protection For cable protection Circuit Circuit Phase voltage Motor output Applied fuses voltage Motor output Applied fuses (kv) (kva) (kv) (kva) Cable diameter (mm ) Rated(A) current of PF (A) 3ф 3.3 Selecting conditions.3~7. LFL-3/G-5B.7~5 LFL-3/G-5B 7.~9 LFL-3/G-B 5~5 LFL-3/G-B 9~39 LFL-3/G-B 5~5 LFL-3/G-B 3~ LFL-3/G-30B 5~ LFL-3/G-30B ~7 LFL-3/G-B ~3 LFL-3/G-B 7~9 LFL-3/G-50B. 3~5 LFL-3/G-50B ~9 LFL-3/G-0B 9~30 LFL-3/G-0B 39~99 LFL-3/G-75B ~7 LFL-3/G-75B 5~ LFL-3/G-0B 377~0 LFL-3/G-0B 9~3 LFL-3/G-5B 7~7 LFL-3/G-5B ~7 LFL-3G-0B ~5 LFL-G-0B 93~5 LFL-3G-0B 95~50 LFL-G-0B The starting current of a motor is selected to withstand 5 times of the full-loads current in sec. Note). Models highlighted can be applied to 3. or 7.kV Under the short-circuit condition, the power fuse breaks the circuit in high speed. Therefore, with relatively high rated current, the Power Fuse protects small size cables. Selected to protect from above times of the short-circuit current. 5

7 Characteristics curves A 0A 75A 3A 50A A 30A A A 5A A 5A 0 A 0A 0 A 75A A A 3A Cut-off current (peak value:ka) Operating time (sec) A Prospective breaking current(rms : ka) Prospective rated current(rms : A) A 0A /7.kV Cut-off characteristics 3./7.kV Pre-arcing timecurrent characteristics 3.kV Cut-off characteristics 3.kV Pre-arcing timecurrent characteristics A 0A Cut-off current (peak value:ka) Operating time (sec) Prospective breaking current(rms : ka) Prospective rated current(rms : A)

8 LS HRC Power Fuses Characteristics curves kV Cut-off characteristics 7.kV Pre-arcing timecurrent characteristics A 0A Cut-off current (peak value:ka) 0A 0A Operating time (sec) Prospective breaking current(rms : ka) Prospective rated current(rms : A) kv Cut-off characteristics kv Pre-arcing timecurrent characteristics Cut-off current (peak value:ka) Operating time (sec) Prospective breaking current(rms : ka) Prospective rated current(rms : A) 7

9 Fuse holder dimensions Indoor use Power Fuse holder LFH-G-DHB Type C (Peak height in open condition) Hook Ring ф.5(hold) Fuse size(a) B C ф ф Mounting hold Earth hole Fuse checker Indoor use Power Fuse holder LFH-G-DHB Type 5.5 (Peak height in open condition) ф.5(hold) Hook Ring Mounting hole Earth hole Below Fuse checker

10 LS HRC Power Fuses Fuse holder dimensions Indoor use Power Fuse holder LFH-DHB(C) Type C (Peak height in open condition) Hook Ring ф.5(hold) Fuse size(a) B C ф ф ф (7) Note) Dimension in ( ) is for LFH-G-DHC Mounting hold Earth hole Below Fuse checker Power Fuse holder Panel Conductor Panel D: Minimum insulation distance in opening E: Minimum insulation distance in closing Rated Rated Circuit Insulation Dimensions(mm) PH Holder type voltage current voltage level Applied fuse (kv) (A) (kv) (BIL, kv) A B C D E F G LFL-3/G-5B, B, B, 30B, B, 50B LFL-3/G-0B, 75B, 0B LFH-G-DHB LFL-3/G-5B, B, B, 30B, B, 50B LFL-3/G-0B, 75B, 0B LFL-3/G-5B, LFL-3G-0B, 0B LFH-G-DHB LFL-3/G-5B, LFL-G-0B, 0B LFL-G-5B, B, B, B LFH-G-DHB LFL-G-5B, 30B, B, 50B, 0B LFL-G-75C, 0C 5B, 0B LFH-G-DHB LFL-G-0B 9

11 Striker operating characteristics & Ordering information Striker operating characteristics Operating characteristics of the Power Fuses Operating weight (kgf) The characteristics of the Power Fuses are native and fixed. Therefore it can not be regulated like a circuit breaker or over-load relay. When ordering, please select the Power Fuses with proper current and operating characteristics by considering its usage and circuit condition. Breaking a small current. Power Fuses are not adequate to protect small current. So, the manufacturer specifies and guarantees the minimum breaking current by regulation. ) Select the rated current of the Power Fuse, which does not operate below the minimum breaking current. ) Protect the current below the minimum value by use of other protective equipment. Operating distance(mm) Types of P/F Link & P/F Holder P/F Link LFL G 50 B Model name Rated voltage General use Rated current Revision No. 3/ 3./7.kV 5 5A 50 50A 3 3.kV A 0 3A 7.kV A 75 75A kv A 0 0A 5 5A 5 5A 30 30A 0 0A A 0 0A P/F Holder LFH G D H B 5 Model name General use Indoor use Revision No. B - C 0A(kV) Rated voltage Rated current 3/ 3./7.kV H 0A kv H 0A Fuse Checker 0 Without With Hook Ring

12 Safety Instructions For your safety, please read user's manual thoroughly before operating. Contact the nearest authorized service facility for examination, repair, or adjustment. Please contact a qualified service technician when you need maintenance. Do not disassemble or repair by yourself! Any maintenance and inspection shall be performed by the personnel having expertise concerned. c 03. LSIS Co.,Ltd. All rights reserved. HEAD OFFICE Korea Gyeonggi-do Anyang-si dongan-gu LS-ro 7 (Hogye-dong) Tel. (-)3-7, 73, Fax. (-)3- CHEONG-JU PLANT Cheong-Ju Plant #, Song Jung Dong, Hung Duk Ku, Cheong Ju, 3-7, Korea Specifications in this catalog are subject to change without notice due to continuous product development and improvement. Global Network LSIS (Middle East) FZE Dubai, U.A.E. Address: LOB 9 JAFZA VIEW TOWER Room 5, Jebel Ali Freezone P.O. Box, Dubai, United Arab Emirates Tel: Fax: jungyongl@lsis.biz Dalian LSIS Co., Ltd. Dalian, China Address: No.5, Liaohexi 3-Road, Economic and Technical Development zone, Dalian 00, China Tel: Fax: lixk@lsis.com.cn LSIS (Wuxi) Co., Ltd. Wuxi, China Address: -A, National High & New Tech Industrial Development Area, Wuxi, Jiangsu,, P.R.China Tel: Fax: xuhg@lsis.com.cn LSIS-VINA Co., Ltd. Hanoi, Vietnam Address: Nguyen Khe - Dong Anh - Ha Noi - Viet Nam Tel: ---0 Fax: srjo@lsisvina.com LSIS-VINA Co., Ltd. Hochiminh, Vietnam Address: Nguyen Thi Minh Khai Str. Yoco Bldg th Floor, Hochiminh City, Vietnam Tel: Fax: sbpark@lsisvina.com LSIS Shanghai Office Shanghai, China Address: Room E-G, th Floor Huamin Empire Plaza, No.7, West Yan'an Road Shanghai 0050, P.R. China Tel: (09) Fax: jinhk@lsis.com.cn LSIS Beijing Office Beijing, China Address: B-Tower 7FL.Beijing Global Trade Center B/D. No.3, BeiSanHuanDong-Lu, DongCheng-District, Beijing 003, P.R. China Tel: ,7 Fax: cuixiaorong@lsis.com.cn LSIS Guangzhou Office Guangzhou, China Address: Room 3,F,New Poly Tower, Zhongshan Liu Road,Guangzhou, P.R. China Tel: Fax: linsz@lsis.biz LSIS Chengdu Office Chengdu, China Address: Room 70 7Floor, huanminhanjun internationnal Building, No Fuxing Road Chengdu, 0, P.R. China Tel: Fax: yangcf@lsis.com.cn LSIS Qingdao Office Qingdao, China Address: 7B,Haixin Guangchang Shenye Building B, No.9, Shandong Road Qingdao 00, P.R. China Tel: Fax: lirj@lsis.com.cn LSIS NETHERLANDS Co.Ltd Qingdao, Netherlands Address: st. Floor, Tupolevlaan, 9NZ,Schiphol-Rijk, The Netherlands Tel: Fax: junshickp@lsis.biz LSIS Gurgaon Office Gurgaon,India Address: 9 First Floor, Park Central, Sector-30, Gurgaon- 00, Haryana, India 0. 0 LS HRC Power Fuses (E) 03. 0/(03) 0. 0 Printed in Korea STAFF