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1. Note Left side attaching type is a separate ordering product Horizon amp vertical installation of manual cable Capable of attaching 90 A turn of manual operation cable in case of manual type thereby minimizing distorting and twisting of cables by reducing the stress of remote operation flexible joint part depending upon attaching angle of LBS Manual operation cable Vertical mounted position Horizontal mounted position cy Vertical type Horizon type Manual operation cable and handle Note Manual operation cable is standard and in case of horizontal installation the use is possible through installation by changing cable kit with simple operation See manual 13 Accessories 14 Fuse trip device A device preventing the defect phase operation by opening a load break switch through interlocking mechanically with a striker at the fusing time Voltage trip device A coil for tripping remotely at the time of system accident or load break Control circuit Scope of Value of incoming rated voltage operation voltage E Normal current Trip time V 75 A A ms DC 110V 70 110 3 75 Manual operation device It is composed of manual operation cable and manual handle as a device used for manual ON OFF outside a panel and at far distance Manual operation cable can be mounted at 90 turn thus reducing the stress of cable when attaching it vertically or horizontally Electric operation2. I I I I x I E di 3 I I 1 1 1 a f4 El gt 1 D E m L 6 4 Characteristic curve of a secondary Ss a a ee A beets circuit breaker or low voltage fuse F A NUES Converted into the primary values use 1 1 1 0 8 m 1 1 A gt b Permissible overload TET ANLE characteristic curve of a transformer mE i TACITI gt Time Current characteristic curve of a Fuse Do et ga ME d I EAS i a d Blow out characteristic curve of a Fuse Transformer gt E i oa i i T gt Operation characteristic curve of a Fuse GG iS pag 1 1 1 1 1 1 I I 1 I 1 1 1 I I 1 I E I 1 1 Circuit breaker Time E E i i i i or low voltage fuse HM UNG I 1 1 I l 1 1 I 1 1 I 1 1 S i ng y AE I I I 1 1 3d DAD I I 1 1 I 1 I 1 it ME I 1 I 1 TF og I 1 I 1 po EIS Current Rated interrupting current of A Permissible overload current time of a transformer i e B Permissible overload characteristic of a transformer Operation characteristic curve of a Fuse a secondary circuit breaker C inrush current and time at no load of a transformer Primary short circuit current 2 Rated interrupting current of a fuse When any protection device is not installed in the secondary of a transformer Permissible overload current of a transformer point 3 must lie to the left of the curve time current characteristic curve of a Fuse Full load current of a transfor
3. RY a RY a AUX a 8 5 31 14 1 1 344 364 384 50 22 424 426 428 COM KO de rtt 13 2 2 359 37 aer 51 23 25 Ya7 Yag NO O6 AUX b 10 33 1 RY a uka id 6T 327 AUX b 21 TTN A N O O O O 6 O O 1 2 6 35 37 39 51 23 25 27 29 F10 N e 15 Operation Principle 16 Motor powered type A spring for input is enlarged as the turn movement of a drive motor and at this time an accumulated energy to input or open a break switch is conveyed to an axis As a result regardless of operator a blade to flow main circuit and to block it is moved at designated speed An input instrument part provides a strong force so that a break switch may overcome the explosive force likely to take place in case of inputting under the system accident At this time the force is not conveyed to an operation handle and the input can be made even under the rated short accident A load break switch is composed of a main blade and an arc blade When a break switch is opened the main blade is opened first and all of currents and extinct through the arc blade And through dispersing and cooling down the arc with a proper operation of Puffer by Air Piston the damage of an instrument and system can be blocked off early Manual type Through turning clockwisely and continuously in application of an exclusive handle supplied together with a break switch the input is made and an opening operation is ma
4. device As advice for ON OFF of a load break switch at far distance the standard supply voltage is DC 110V Scope of Value of incoming Rated voltage operation voltage current wave Normal current Change fime V 7 A A sec DC 110V 85 110 3 2 7 5 Fuse check switch In case a fuse in fuse interlocked load break switch is melted as a contact to be operated mechanically through interlocking with a striker it is used in the display of fuse Note The capacity of contact is same as that of Aux switch Counter A device displaying the operating times of a break switch in application of 5 Digits Aux switch As a contact to be operated through interlocking mechanically according to ON OFF condition of main contact of a load break switch it is used in the display or control of condition of a load break switch Classification Resistance Inductive load load 440V 3A 1 5A oen AC 220V 9A 2 5A capacily 110V 10A 9A DC 220V 5A 2 5A 110V 10A 9A Contact number AX2 AX4 2a2b 4a4b Control circuits Auxiliary Switch 1 if I 4a 4b Fuse Check on OHF a 2b Limit Switch O JA S i N 3 1 5 34 36 38 50 22 24 26 28 F9 M Charging Motor Q s Sa iE RS a TC Trip Coil RY Motor Operation Relay NG ol pa AUX Auxiliary Switch
5. 425 564 LFL 20G 60B 430 897 745 1 554 564 710 LFL 20G 75C 580 1 145 1 000 1 983 710 1 021 LFL 20G 100C 923 1 527 1 600 2 645 1 021 1 655 mm LFL 206 1258 1 364 1 908 2 362 3 304 1 655 2 370 ae 9f i LFL 20G 160B 2 125 2 443 3 680 4 232 2 370 3 170 DIN Size LFL 20G 200B 2 650 3 050 4 593 5 287 3 170 4 000 537 87 LFH 20G D2HC 21 22 Leader in Electrics 4 Automation e For your safety please read user s manual thoroughly before operating Contact the nearest authorized service facility for examination repair or adjustment Please contact qualified service technician when you need maintenance Do not disassemble or repair by yourself Safety Instructions e Any maintenance and inspection shall be performed by the personnel having expertise concerned LS Industrial Systems Co Ltd www Isis biz HEAD OFFICE lll Global Network e LS Industrial Systems Middle East FZE gt gt Dubai U A E Yonsei Jaedan Severance Bldg 84 11 Namdaemunno 5ga Address P O Box 114216 API World Tower 303B Sheikhe Zayed Road Dubai U A E Jung gu Seoul 100 753 Korea Tel 971 4 332 8289 Fax 971 4 332 9444 e mail hwyim lsis biz Tel 82 2 2034 4870 e Dalian LS Industrial Systems Co Ltd gt gt Dalian China Address No 15 Liaohexi 3 Road Economic and Technical Development zone Dalian 116600 China Fax 82 2 2034 4713 Tel 86 411 8273 7777 Fax 86 411 8730 7560 e mail lixk lsis com cn e LS Industrial Sys
6. Leader in Electrics 4 Automation Tri MEC Load Break Switch Electric Equipment LS Industrial Systems WWW Isis biz Leader 1n the field of industrial electricity amp automation creating the comfortable and productive society through providing Total Solution Enabling you to feel the difference in the performance and technology of improved product of Load Break Switch completed with LS technology and testing equipments Contents Features es 4 BEL hl nme ene cc 10 Ordering Information 11 External View ooo 12 ARS n NM 14 Operation Principle 16 Installation s 17 Dimensions 18 PIGET HUI NERA 20 Coordination Graph 21 Power Fuse Selection Tables 22 Applied by new mechanism Being applied by new concept bendable type blade structure LS Air Insulated Load Break Switch has further been intensified with safety and reliabi VEZ and upgraded to higher stage with the performance realization through accurate technology interpretation and actual testing Incorporation of maximum strength through CAE interpretation pann Optimization design of Optimization design of discharge input for stable 3D for maximization of Arc extinction extinction force General features In application of new concept mechanism of bendable type blade structure LS Tri MEC Air Insulited Load Break Switch LB
7. S has been equipped with further advanced technology and in a system switching the circuits when checking measuring testing and repairing the instruments at branch point with 3 phase load break switch designed customer orientedly and considerably In particular a bendable type blade structure is significantly small in operation radius in contrast with existing direct line one and an arc discharge angle at the time of breaking operation is under 50 thereby reducing the danger of accident by an arc remarkably And it is suitable for a metal Enclosed and Package Substation thanks to higher insulation resistant power and is equipped with durability stability and economical efficiency E2 class mechanical strength based on new standard application e Standard ambient temperature under 35 C 24hrs in average Standard temperature 20 C 40 C Standard storage 25 C 60 C e Humidity 40 C 85 below 20 C 90 below e Place Indoor place with clean ambient air not being contaminated with dust smoke corrosion substance or combustible substance salty materials etc Never use store or leave alone this product in the place with sulfuric gas ammonia gas and corrosive gas H8 xO 01ppm SO2x0 01ppm NH3 lt a few ppm e Altitude above sea level 1000m below IEC 62271 105 60265 1 60694 60282 1 Erap gt WAT rn m PN STAD re NN AT KIN KSA c Performance Up Grade by New Standard Reliable Te
8. basis 2 Fix the cable attaching key on to the distribution board frame with bolt amp nut Maintain the cable curve radius above R150 and fix it on to the panel pole and etc solidly so that the insulation distance from the earth may be spaced 3 In case of manual type others than a motor and a trip coil are same as those of electric one Attaching key Manual handle 17 Dimensions Fuse combination type Unit mm Mi ia A Li I HEHH T LA F o a A i o bi 3 ALO CIA L 79342 L Attaching dimension 410 1 LBS single type b 7 7 20 INA o i o ij RS 19 dika ll Be eu p13 2 jk H H Q M EY oj c 8 8 EM e 2 8 793142 AN _ EH Ub EN B ai WH 3 ENS EE Lo Attaching dimension e IA 1 i o o o T N 20 300 2 116 98 5 nG 116 300 2 18 Coordination Graph Full load current of a transformer The lowest interrupting current of the secondary circuit breaker Permissible overload current of a transformer Rated current of a fuse 6 Lowest blow out current of a fuse Lowest interrupting current of a fuse Inrush current at no load of a transformer 000 000 O Secondary short circuit current l I I I I I I I I l L ER I l L L
9. chnology This product has been verified for its excellency in quality through passing the development test strictly in accordance with New Standard IEC 62271 105 Switch Fuse and 60265 1 Load Break Switch e KERI type test in application of IEC New Standard Approved by KOLAS Global key technology accumulation through self zz Power Testing amp Technology Institute development test and analysis by PT amp T of public test institute Compact 8 space saving design phase collective operation e Application with combustion resistant and high strength engineering PAANAN ic at Sessa e Compressed air mode arch extinction KA e Break switch fuse combination 24kV 25kA switching 40kA max e Fuse striker automatic trip DIN 43625 TRI Y MEC The Highest Performance in Domestic Market ict has succeeded in passing electrical performance ith New Standard E2 test grade The performance of this new standard product has been improved by 300 in comparison with old standard one through passing the load break test in application of IEC 60265 1 and an excellent performance has been verified successfully by completing the load break test in application of E2 grade intensified further than new standard El grade e Load break 100 times e No load break 1000 times Having been passed recently in the transition current test in accordance with modern international standard 62271 105 this product has increase
10. d the reliability sufficiently in application of self developed power fuse IEC 60265 1 New Standard IEC 265 1 Old Standard U El class E2 class Rated load current break 10 times 30 times Short current imput 52kA 2 times 3 times Note E2 grade test condition requiring the performance higher by maximum 300 than E1 grade in accordance with IEC standard Reliability and Stability for User Through applying a bendable type blade being a double joint type drive structure the stability have been recognized successfully Spacing the maximum inter phase distance No need to install the separate insulation barrier when assembling Bus bar at load side equipped with a power fuse Metal to Metal 210mm e Center to Center 300mm Direct line blade structure Bendable type blade structure Minimization of break distance Through employing a direct line flexible type Knife drive structure the break distance and panel depth comparing to an existing direct line type can be reduced remarkably And an existing product may require a sufficient insulation distance at 90 against the side of installation in the eruption angle but for Tri MEC LBS of a direct line flexible type Knife structure the stability in use has been intensified further since the eruption angle of arc becomes under 50 Rating 10 LS Tri MEC LBS is air insulation type and has a major instrument equipped with the f
11. de by LATCH instrument part through turning the exclusive handle clockwisely and continuously Operation of instrument part A reduction gear and mechanism axis located at the side of base frame is equipped with a spring cap and lever and it takes a turn exercise of 360 counter clockwisely When a hook lever linked to the main axis of a switch takes an up down turn exercise a moving rod connects a main blade to and an arc blade in conduction part and disconnects them and opens a load circuit Inputting operation Inputting condition Advance in High Voltage Insulation PRESURE LS CONTACT TRAVEL 100 CONTAC OPENING 50 PRESURE AT NO LOAD TIME IN Ms WINDOW FOR ARC EXTINCTION Puffer Type pressure time characteristics curves TRI Y Installation Installation method Panel frame Panel frame Vertical installation Horizontal installation Cable installation by manual operation 127 100 130 ED y Ay T Bi E CR nn UU YESA _ i H 1L 4 1 T Tt UAE E a pu ed ub i m de i LE E H Vertical installation zz 2 RITTER MA ST YUU UU EE attaching Manual key handle Hopia a D38 0 mc PANEL CUTTING Horizontal installation For cable attaching key Note 1 The length of the cable for remote manual operation is mounted on 2 0m
12. mer D lt Rated current of a fuse e Point C inrush current and time at no load of a transformer must lie to the left of the point O time current characteristic curve of a Fuse x Coordination in the graph e Zone of 1 Protection of primary side from short circuit by a fuse e Zone of 2 Protection of a transformer Zone of 3 Out of the scope of fuse operation e Secondary short circuit current gt Lowest interrupting current of a fuse Zone of 4 Interruption is not ensured even Point B must lie to the left of the secondary short circuit current though the fuse blows e Primary short circuit current lt Rated interrupting current of a fuse e Zone of 5 Protection of a transformer is not ensured even though the fuse interrupts the circuit e Zone of 3 4 5 No protection zone of a When a circuit breaker or fuse is installed in the secondary of a transformer transformer Circuit Must meet the requirements above mentioned in D breaker or low voltage The characteristic curve of a secondary circuit breaker or low voltage fuse must lie to fuse required for the the left of permissible overload characteristic curve of a transformer b and under the transformer protection point B The characteristic curve of a secondary circuit breaker or low voltage fuse 8 must lie to the Time Current characteristic curve of a Fuse and under the Secondary short circuit current e Secondary short circuit c
13. of Composition Manual operation switch switch m Motor voltage kA current A power Auxiliary LBS single type cable Air LBS powered 24 24kV 6 630A DI DC110V switch Right 20 2 0mm L Vacuum B Manual D2 DC 220V 1 2a2b Arcila 10 1 0mm load type Al lacnov 2 4a4b type Right 15 1 5mm A2 AC 220V LBS single EM 1 8mm 00 None type Left 26 2 6mm menda Fuse interlocked 95 3 5mm type Left 00 None Note 1 Left attaching type of drive mechanism is separate order product See page 13 2 A power fuse is only available in DIN product Power Fuse LS power fuse General Modification nad load use No x Rated current Rated voltage 5A 10A 16A 120A 25A 30A 40A 50A 63A 20 24kV 11 External View we T Source side terminal Load side terminal Main contact fixed Main contact movable Arc contact fixed Arc contact movable SEIT Cl lt 1 T ma wi Arc extinction nozzle Insulation rod Puffer Motor Base frame p Fuse clip Voltage trip device D Aux switch 5 Connector 5 Counter Fuse trip device Fuse check switch 9 Manual operation cable Manual operation handle 12 Left 4 right drive mechanism Easy input operation and trip operation through employing independently developed mechanism and capable of left 8 right drive mechanism Standard type Left side attaching type
14. onditions Transformer protection e A transformer incoming current was selected on the assumption that it is 10 times as full load of transformer for 0 1 sec A fuse rated current was selected so that 1 5 times as a transformer rated current may be flowed continuously A transformer fuse was selected on the assumption that it is broken within 2 secs in 25 times as a transformer rated current when the secondary current is short Motor protection e lt is assumed that the inrush current of a motor is 5 times of full load current for 10 seconds Condenser protection e It is assumed that the inrush current of a capacitor is 71 times of its rated current for 0 002 second The rated current of a fuse is selected to carry continuously the current of 1 43 times of rated current of a capacitor The above mentioned comments are according to KS Korean Industrial Standard and subject to the real situation Application Comdenser Transformer load kVA Dimensions mm G type load kVA Application holder Model Single phase Three phase Three phase A B LFL 20G 5B 20 43 36 75 460 o MES LFL 20G 10B 43 90 75 157 46 83 E LFL 20G 16B 87 180 151 313 54 172 ae is LFL 20G 20B 99 206 172 358 83 203 LFL 20G 25B 130 269 224 466 193 272 LFL 20G 30B 149 310 258 538 203 317 A LFL 20G 40B 2674557 464 965 317 425 442 77 LFH 20G D2HB LFL 20G 50B 345 719 598 1 246
15. rating shall be selected In case of protecting an overload field under minimum breaking current a lower fuse in minimum breaking current shall be used or a fuse shall be used through combining the overcurrent breaking devices in series Check if a voltage of circuit is higher than overload voltage of fuse e Since a fuse may cause the deterioration even without operation thereby generating a rated current with a sufficient capacity shall be selected Replace at the time of fuse current 24kV fusing Upholstery features curve 24kV Current limiting features curve 1000 1000 800 800 600 SA 200A 600 400 MA 400 160A 200 w 200 125A 100 100 8 am Ji 80 200A 80A a O iy 160A 40 E 40 125A Ai 75A T 100A 20 2 20 Ji ma I 63A 75A O 0 5 10 63A 8 gt 8 Dos 8 s D O o 30A CREE 254 3 5 i 20A 0 8 D 08 16A a 06 Q 0 6 E 2E 10A E o 5A E 02 S 0 2 0 1 0 1 0 08 0 08 0 06 0 06 0 04 0 04 0 02 0 02 0 01 0 01 amp A 8 9 228 e s 8 g2 2 9 880 A O Ee CO M S N Y 9 98 S 9 28 8 6 ss SG e a oe Agreed current effective value A Agreed current effective value A gt 20 Power Fuse Selection Tables Seletion c
16. sis biz e LS Industrial Systems Chengdu Office gt Chengdu China Address 12Floor Guodong Buiding No52 Jindun Road Chengdu 610041 P R China Tel 86 28 8612 9151 Fax 86 28 8612 9236 e mail yangcf lsis com cn LS Industrial Systems Qingdao Office gt gt Qingdao China n N Address 7B40 Haixin Guangchang Shenye Building B No 9 Shandong Road Qingdao 26600 P R China Specifications in this catalog are subject to change without notice due to Tel 86 532 8501 6568 Fax 86 532 583 3793 e mail lirj G lsis com cn continuous product development and improvement 2007 05 Load Break Switch E 2004 08 04 2007 05 Printed in Korea STAFF
17. tems Wuxi Co Ltd gt gt Wuxi china Address 102 A National High amp New Tech Industrial Development Area Wuxi Jiangsu 214028 P R China Tel 86 510 8534 6666 Fax 86 510 522 4078 e mail xuhgOlsis com cn Mi CHEONG JU PLANT LS VINA Industrial Systems Co Ltd gt gt Hanoi Vietnam Cheong Ju Plant 1 Song Jung Dong Hung Duk Ku Address Nguyen Khe Dong Anh Ha Noi Viet Nam Tel 84 4 882 0222 Fax 84 4 882 0220 e mail srjo Qhn vnn Cheong Ju 361 720 Korea el 84 4 882 0 ax 84 4 882 0220 e mail srjo Qhn vnn vn LS Industrial Systems Tokyo Office gt gt Tokyo Japan Address 16FL Higashi Kan Akasaka Twin Tower 17 22 2 chome Akasaka Minato ku Tokyo 107 8470 Japan Tel 81 3 3582 9128 Fax 81 3 3582 2667 e mail jschuna lsis biz e LS Industrial Systems Shanghai Office Shanghai China Address Room E G 12th Floor Huamin Empire Plaza No 726 West Yan an Road Shanghai 200050 P R China Tel 86 21 5237 9977 609 Fax 89 21 5237 7191 e mail Jinhk lsis com cn LS Industrial Systems Beijing Office gt Beijing China Address B Tower 17FL Beijing Global Trade Center B D No 36 BeiSanHuanDong Lu DongCheng District Beijing 100013 P R China Tel 86 10 5825 6025 7 Fax 86 10 5825 6026 e mail cuixiaorong lsis com cn e LS Industrial Systems Guangzhou Office Guangzhou China Address Room 1403 14F New Poly Tower 2 Zhongshan Liu Road Guangzhou P R China Tel 86 20 8326 6764 Fax 86 20 8326 6287 e mail linszOl
18. unction of a rated load break and a short protection when a fuse is installed in nominal voltage 22 9kv distribution system LS and as an indoor installation type it is used in the leading in instruments and high voltage branch system of user side such as unit type transformer room general cubicle and panel protection of transformer and cable in transformer room condenser bank motor etc Type LGS L M 24 6 LGS L B 24 6 Break switch grade IEC E2 MI Rated voltage kV 24 Rated current A 630 Rated frequency Hz 60 Rated short time current resistant kA 20 A short input current KAp 52 Commercial frequency Inter earth kv 50 voltage resistant Inter polarity kV 60 Electroencephalo Inter earth kV 125 impulse voltage resistant Inter polarity kV 145 630A 30 Load current 31 5A 20 Loop current 630A 20 Current break times Cable charging 31 5A 10 current 9 45A 10 Line charging current 1 5A 10 Rated transition current A 500 Rated transition voltage Vdc 110 Rated transition current A 5 No voltage break times 1000 Operation Motor powered Manual Non fuse kg 70 Weight Fuse kg 80 Note Above weight does not include fuse weight TRI Y MEC Ordering Information Air Insulated Load Break Switch PT LS Load break Kind of break Control method Rated Rated Control Number
19. urrent 8 lt Characteristic curve of a secondary circuit breaker or low voltage fuse 8 e The secondary circuit breaker or low voltage fuse should meet the above mentioned requirements to each branch circuit e Another medium voltage protection device is required for the ensured protection against the fault happening between the secondary protection devices and the internal short circuit of a transformer in the zone of 3 4 5 19 Power Fuse Applied power fuse LS Prime MEC Power Fuse is used for protecting circuits and system instruments by severe accident current and in general for protecting transformer circuits condenser circuits motor circuits etc The silver is used in elements and through using high quality silica and ceramic magnetic rod and insulating tube the safety and reliability of the product has been improved remarkably The cautions in applying Fuse e A fuse has to be selected only for protecting a short circuit accident Overcurrent can not be protected e A fuse can not use again after operation A proper rated current shall be selected so that a fuse action may not be damaged e The most suitable rated current shall be selected in consideration of the fuse use and circuit features since the fuse operation features are fixed according to respective ones e t is recommended that the protection be made from other instruments under minimum breaking current and a proper rated fuse incapable of fuse ope
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