Super Solution Retrofit VCB Vacuum Circuit Breakers

Transcription

1 Super Solution Retrofit VCB Vacuum Circuit Breakers

2 Susol VCB Susol VCB is full line-up new VCB which has the high interrupting capacity, large current(~50ka, ~4000A), and maximized compatibility with existing products through the dual phases and compact sized models. Contents Basic features and interrupting operation 6 Standards and certification 8 VCB External structure 10 Retrofit - Types and ordering information 16 Type of circuit breakers 17 Retrofit - Ratings 18 Retrofit - Accessories 19 Retrofit - Control circuit diagrams 29 Retrofit - Dimensions 30 Technical data 35 Appendix : Type of circuit breakers 42

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4 Vacuum Circuit Breaker, VCB is installed in the medium voltage distribution lines to protect life and load equipment. In case of accidents such as over current, short circuit and ground fault current, VCB works by interrupting the circuit through the inner Vacuum Interrupter which is acted by signal from the outside separate relay. LSIS' Super Solution, Susol VCB responds. - customer needs for the breakers with high interrupting capacity and large current due to the integration and increase of the load capacity. - worldwide trend of diversification in the medium voltage distribution lines. - increase of the reliability for the temperature characteristics of circuit breakers. Premium-type products to improve convenience and reliability of medium voltage switchgear configuration. - full line-up modeling to the high interrupting capacity and large current. - main structure with high reliability application. - a variety of accessories and ability to maximize. Suitable for use as the main circuit breaker to protect key installations in the places such as device industry, power plants, high-rise buildings, large ships. 4I

5 Susol Retrofitted VCB provides an economical solution to the replacement and upgrading of the worn or obsolete VCB in the switchgear with minimal downtime through exacting mechanical and electrical interchangeability. Susol Retrofitted VCB features Replacement time reduction - Busbar replacement unnecessary - Cradle 1 : 1 compatible - Stable operation Switchgear life extension - Providing electrical life extension, new standard application and certification of a equipment Low cost / performance / function - Large current and high breaking capacity - Accessory diversification - Minimal busbar works Total Solution - Technical support by LS Industrial Systems - Control circuit inspection and parts replacement I 5

6 Main circuit structure with high reliability Susol VCB Breaker Insulation rod Lower terminal Shunt Vacuum interrupter Upper terminal Tulip contactor Fixed electrode Contacts Bellows shield Bellows Movable electrode Fixed seal cup Arc shield Ceramic Movable seal cup Vacuum Interrupter, VI The vacuum rate within the VI is very high (approximately 5x10-5 Torr) and the spacing between fixed contact and movable contact is about 6~20mm, depending on the voltage. The contacts are in a structure that arc can easily be extinguished and the surfaces of the contacts are made of special alloy (copperchromium) and the interior is completely sealed to prevent loss of vacuum. Therefore the wearing of the contacts can be minimized in the event of short-circuit and the arc energy by overvoltage or switching can be reduced effectively. 6I

7 < < Susol VCB Series Convenience and Variety Maximizing the durability and reliability of the main circuit contactors (Stego Tulip contactor) Strong structure for the temperature rise (Natural cooling system) I 7

8 Standards and certifications E2 (List 1 or List3) E2 (List3) is first proposed in the IEC (2008) to improve the efficiency of the interrupting test. According to it the number of interrupting test T60 is increased instead of fewer number of T10 and T30 compared to the existing List1. List3 compared with the List1 maintains the equivalent of the test but has severe test conditions because 34% higher arc energy applied to the breaker. List3 is applied to Susol VCB series. IEC (2002) IEC (2008) Arc Energy: List 1 (100%) < List 2 (125%) < List 3 (134%) 100% 125% 134% E2 List1 E2 List3 E2 List2 E1 Acr energy applied to the breaker 8I

9 < < Susol VCB Series M2, C2 IEC standards to verify the relibilty of the product allows to select the quality level for the product to be tested according to its real performance and practical usage. The highest quality level of M2, C2 has been applied to Susol VCB. M1 and M2: Test to determine the mechanical durability grade 2000 operation test Sequence Control Voltage Number of operations C - O 85% 500 C - O 100% 500 C - O 110% 500 O - CO - C 100% 250 M2 M1 2,000 operations M1 2,000 operations 10,000 operations Pre-test (characteristics, isolation, and temperature) Confirmative tests after the completion of 2000 operations (Characteristics, isolation, temperature) Pre-test (characteristics, isolation, and temperature) Confirmative tests after every 2000 operation Confirmative tests after the completion of 10,000 operations (Characteristics, isolation, temperature) C1, C2: Capacitive current breaking test is to verify the probability of restriking and C2 class is secured for all Susol VCB. C1 C1 C2 2 restrikes are allowed during O 24 operations and CO 24 operations C2 Restrike is not allowed during O 24 operations and CO 24 operations I 9

10 External structure of VCB Breaker... VL type Name of each part ❶ Push ON Button ❷ Push OFF Button ❸ Charge/Discharge Indicator ❺ ❶ ❸ ❷ ❹ ON/OFF Indicator ❺ Manual Charging Handle ❻ Operation Counter ❼ Interlock Lever ❹ ❻ ❼ Back side 10

11 Breaker... VH type Name of each part ❶ Push ON Button ❷ Push OFF Button ❸ Charge/Discharge Indicator ❷ ❶ ❺ ❸ ❹ ON/OFF Indicator ❺ Manual Changing Handle ❻ Operation Counter ❼ Interlock Lever ❹ ❻ ❼ Back side 11

12 Basic functions and interrupting operation Basic functions Manual operation 1 Manual Charge a) VL type: operate the charge handle 7-8 times as a fully stroke. b) VH type: Insert the charge handle into the handle slot first. Rotate the handle clockwise 40 times more and then charge will be complete with a click sound. - When the closing spring is charged fully "CHARGED" is displayed at the charge indicator. 2 Manual closing a) Pressing the ON button the breaker is closed. b) With the closing of the breaker "ON" is displayed at Close/Trip indicator and "DISCHARGED" at the charge indicator. 3 Manual trip a) Pressing the OFF button the breaker is opened. b) "OFF" is displayed at Close/Trip indicator. Electric operation 1 Electric charge The breaker is remotely closing with charging of closing spring. If the breaker trips the closing spring is automatically charged by gear motors. 2 Electric closing Remote closing is operated by the closing coil. 3 Electric trip Remote trip can be operated by the trip coil or UVT coil. Main contacts are operated by the energy of the spring mechanism and closing spring is charged by the motor in the mechanism. Breaker is closed by closing coil and tripped by trip coil. These operations are repeated in VCB as shown in the below sequence chart. Start closing Closing signal Control power ON Charging time of closing spring (VL type : 5 sec, VH type : 12 sec.) Complete closing Trip(Open) signal Start opening Complete opening Motor Closing spring Opening spring Closing coil Opening coil Main contact Closing time Opening time Sequence of the switching mechanism 12

13 Basic functions and interrupting operation The interruption of vacuum interrupters The interruption of VCB is carried out by the vacuum interrupters. Interrupter contacts as a key part made of copper - chromium (CuCr) material with spiral shape have low contact wear characteristics and withstand voltage is excellent. Spiral contacts make the arc generated between the surfaces of contacts rotated around the surface of contact by the induced magnetic field generated due to the spiral contact structure, which results in preventing local heating, thereby corruption and interrupting instantaneously. Fixed electrode Fixed seal cup Fixed shield Contacts Arc shield Ceramic Bellows shield Bellows Movable seal cup An example of oscillogram obtained through the interrupting test using LC resonant circuit 13

14 Basic functions and interrupting operation The interruption of vacuum interrupters In case of using the flat contact any of the designs do not reflect on when contacts are opening the arc with high temperature is contracted and fixed in the center of the contacts,which is called pinch effect. To prevent the effect two kinds of contact shapes are designed. One is Axial magnetic field which spreads the arc before its contraction, and the other is Radial magnetic field which permits the contraction of the arc but makes it rotated to disperse the energy. Because contracted arc is shaped like a cylinder it is called Contracted arc or columnar arc. Arc voltage waveforms and arc image captured during arcing time Spiral contact structure (Radial magnetic field), using the force (F = j B) generated by the interaction of the radial magnetic field caused by the current flowing through the arc between two contacts, disperse the arc energy evenly on the surface of contact by rotating the arc that is contracted by the pinch effect so as to minimize contact damage. The images show arc behavior during the arcing time of about 8ms by shooting with high-speed camera capable of shooting 10,000 frames per sec. (0.1ms/frame) by focusing on parts of the arcing time on the above graph and simultaneously measured arc voltage also represented to show arc state by section. Radial magnetic field type contact Columnar arc Current Direction of rotating arc Arc driving principle in the contacts of Radial magnetic field 14

15 Standards and certification Susol VCB has been type tested and obtained certifications according to the latest IEC standard at international testing laboratory and can be installed and applied at the environment and conditions in accordance with the standard. Standard - IEC ( ) High-voltage switchgear and controlgear - Part 1: Common specifications. - IEC ( ) High-voltage switchgear and controlgear - Part 2: Alternating-current circuit breakers. Test and certification Test report (KERI) Test report (KEMA) 15

16 Retrofit - Types and ordering information VL-06/20 Breaker VL 20 G 25 M 20 Basic model name Rated voltage (kv) Version Interrupting current (ka) Phase distance/compatibility Rated current (A) VL Susol VCB E E type drawout L SVB Retrofit(7.2kV) F F type drawout M GVB Retrofit(7.2kV) G G type drawout Note) LVB became the new name of SVB and GVB after M1 C1 T1 SA2 U0 A 7 8 A Motor control voltage Trip coil voltage UVT M0 None motormotor T0 None T.C U0 None UVT M1 DC 110V T1 DC 110V M2 DC 220V T2 DC 220V M3 DC 125V T3 DC 125V M4 DC 24V~30V T4 DC 24V~30V M5 DC 48V~60V T5 DC 48V~60V M6 AC 48V T6 AC 48V M7 AC 100V~130V T7 AC 100V~130V M8 AC 200V~250V T8 AC 200V~250V Closing coil voltage Connector and wire Other accessories C0 None C.C SA2 A type connector, 4a4b 7 Key lock C1 C2 DC 110V DC 220V SA4 SB2 Standard A type connector, 10a10b B type connector, 4a4b 8 Button Padlock 9 Button cover C3 DC 125V SB4 B type connector, 10a10b A Lead wire C6 Note) 1. Refer to the rating table for the product selection (Rated AC 48V voltage, Breaking current, Rated current and etc.) 2. If A7(Keylock), A8(Button padlock) and AA(Lead Wire) areselected, A78A is the type name in the ordering. 3. A8 (Button Padlock) and A9 (Button Cover) can not be selected simultaneously. C7 C8 AC 100V~130V AC 200V~250V 4. AX (Plate for the operation of Position S/W ) is specific to the 24kV product. 5. If the existing auxiliary contacts is 5a4b or 7a7b please select 10a10b. C4 C5 DC 24V~30V DC 48V~60V B User Plug (Part) Plate for the operation of X Position S/W Note) A is written only once in case of more than one. 16

17 Type of circuit breakers Retrofit Ur[V] Isc[kA] Ir[A] Old VCB model name p=140 p=210 SVB, GVB type LVB type Retrofit VCB model name Connector SVB-6CE-20(630A) LVB-06E-20A/06 VL-06E20L06 A 630 SVB-6CF-20(630A) LVB-06F-20A/06 VL-06F20L06 A 20 LVB-06G-20A/06 VL-06G20L06 A SVB-6CE-20(1250A) LVB-06E-20A/12 VL-06E20L13 A 1250 SVB-6CF-20(1250A) LVB-06F-20A/12 VL-06F20L13 A 7.2 LVB-06G-20A/12 VL-06G20L13 A SVB-6CE-25(630A) LVB-06E-25A/06 VL-06E25L06 A 630 SVB-6CF-25(630A) LVB-06F-25A/06 VL-06F25L06 A 25 LVB-06G-25A/06 VL-06G25L06 A SVB-6CE-25(1250A) LVB-06E-25A/12 VL-06E25L13 A 1250 SVB-6CF-25(1250A) LVB-06F-25A/12 VL-06F25L13 A LVB-06G-25A/12 VL-06G25L13 A GVB-X/ /20Mf LVB-20E-13A/06 VL-20E13M06 A/B 630 LVB-20F-13A/06 VL-20F13M06 A/B 12.5 GVB-Y/ /20Mf LVB-20G-13A/06 VL-20G13M06 A/B GVB-X/ /20Mf LVB-20E-13A/12 VL-20E13M13 A/B 1250 LVB-20F-13A/12 VL-20F13M13 A/B GVB-Y/ /20Mf LVB-20G-13A/12 VL-20G1M13 A/B GVB-X/ /20Mf LVB-20E-25A/06 VL-20E25M06 A/B LVB-20F-25A/06 VL-20F25M06 A/B GVB-Y/ /20Mf LVB-20G-25A/06 VL-20G25M06 A/B GVB-X/ /20Mf LVB-20E-25A/12 VL-20E25M13 A/B LVB-20F-25A/12 VL-20F25M13 A/B GVB-Y/ /20Mf LVB-20G-25A/12 VL-20G25M13 A/B GVB-X/ /20Mf LVB-20E-25A/20 VL-20E25M20 A/B LVB-20F-25A/20 VL-20F25M20 A/B GVB-Y/ /20Mf LVB-20G-25A/20 VL-20G25M20 A/B Note) 1. Ur = Rated voltage 2. Isc = Rated short-circuit current 3. Ir = Rated normal current 4. p = Phase distance 5. All the available retrofit breakers are shown in the Appendix (42p). Please consult separately when ordering. 17

18 Retrofit - Ratings VL-06/20 Item VL-06 20/25L06/13 VL-20 13M06/13 VL-20 25M06/13/20 Rated voltage Ur (kv) Rated normal current Ir (A) Rated frequency fr (Hz) 50/60 Rated short-circuit current Ise (ka) 20, Rated short-time withstand current Ik/tk (ka/s) 20/3, 25/3 12.5/3 25/3 Rated short-circuit breaking capacity (MVA) 250/ Rated short-circuit making current Ip (ka) 2.5 Isc (50 Hz )/2.6 Isc (60 Hz ) Rated breaking time (Cycle) 3 Rated withstand voltage * Lifetime with maintenance. Power frequency(1min) Ud(kV) Impulse( μs ) Up(kV) Rated operating sequence O-0.3s-CO-15s-CO O-0.3s-CO-3min-CO Control voltage Auxiliary contacts Closing coil (V) DC 24~30V, DC 48~60V, DC 110V, DC 125V, DC 220V, AC 48V, AC 100~130V, AC220~250V Trip coil (V) DC 24~30V, DC 48~60V, DC 110V, DC 125V, DC 220V, AC 48V, AC 100~130V, AC220~250V 4a4b, 10a10b Rated opening time (sec) No-load closing time (sec) Type test class Lifetime * Mechanical Electrical Capacitive current switching M2 E2 (List3) Mechanical (Operations) Electrical (Operations) Page 35 Installation version Drawout E, F, G type Phase distance (mm) Weight Breaker (E type) ( kg ) Breaker (F type) ( kg ) Breaker (G type) ( kg ) Dimensions Breaker Page 30 Page 30~34 Standards C2 IEC (2008), KERI/KEMA, V-check(KESCO) 18

19 Retrofit - Accessory Mounting Position Supplied as Type Accessory Remarks page 7.2kV 24kV M Motor Attached at the factory 20p CC Closing Coil Attached at the factory 20p TC Trip Coil Attached at the factory 21p SA Auxiliary Contact 4a4b Attached at the factory 22p (SB) Auxiliary Contact 10a10b Option Option Attached at the factory 22p C Counter Attached at the factory 22p Breaker (Internal) A7 Keylock Option Option Attached at the factory 23p A8 Button Padlock Option Option Attached at the factory 23p A9 Button Cover Option Option Attached at the factory 24p AA Lead Wire: A/B type connector Option Option Attached at the factory 24p AB Plug/Terminal for Lead Wire Option Option Attached at the factory 25p AX Plate for the operation of Position S/W - Option Attached at the factory 26p Trip Coil Monitoring Contact Attached at the factory 27p Position plate ass'y F/G Type(Stroke 310) Attached at the factory 26p Position plate ass'y E Type(Stroke 250) Attached at the factory 26p Compatible connector, 7.2kV, 5a4b, A-type connector (CC terminal No. 3, 4, TC terminal No. : 5.6) Compatible connector, 7.2kV, 10a10b, A-type connector (CC terminal No. 3, 4, TC terminal No. : 5.6) Compatible connector, 7.2kV, 5a4b, A-type connector (CC terminal No. 5, 6, TC terminal No. : 3.4) Compatible connector, 7.2kV, 10a10b, A-type connector (CC terminal No. 5, 6, TC terminal No. : 3.4) Option Option p Option Option p Option Option p Option Option p Breaker (External) Compatible connector, 24kV, 4a4b, A type connector Option Option p Compatible connector, 24kV, 7a7b, A type connector Option Option p Compatible connector, 24kV, 10a10b, A type connector Option Option p Compatible connector, 24kV, 4a4b, B type connector Option Option p Compatible connector, 24kV, 7a7b, B type connector Option Option p Compatible connector, 24kV, 10a10b, B type connector Option Option p CTU Coil Test Unit Option Option - 28p * : Basic Installation 19

20 Retrofit - Accessory Motor: M Installed inside of a breaker as standard Charge the closing spring of a circuit breaker by the external power source. When the charging is complete, control power of the motor will be "OFF" by the built-in Limit S/W. Without the external power source, charge manually. Motor Gear Main shaft Charge completion contact Motor VL type Input voltage (Vn) Load current (A) DC 24~ DC 48~ 30V DC 110V DC 125V DC 220V AC 48V 60V AC 100~ AC 200~ V Starting current (A) 5 times of load current Charge time Within 5 sec. Note) Rated operation and control voltage range, see page 62. Closing Coil: C Installed inside of a breaker as standard It is a control device which closes a circuit breaker, when applying voltage continuously or instantaneously over 200ms to the coil control terminals. Closing coil VL type Input voltage (Vn) DC 24~ 30V DC 48~ DC 110V DC 125V DC 220V AC 48V 60V Power consumption (inrush, W) 200 Power consumption (steady, W) 5 Note) Rated operation and control voltage range, see page AC 100~ AC 200~ V

21 Trip Coil: T Installed inside of a breaker as standard It is a control device which trips a circuit breaker from remote place, when applying voltage continuously or instantaneously over 35ms to coil control terminals. When UVT coil is installed, its location is changed. Trip coil VL type Input voltage (Vn) DC 24~ DC 48~ DC 110V DC 125V DC 220V AC 48V AC 100~ AC 200~ 30V 60V V Power consumption (inrush, W) 200 Power consumption (steady, W) 5 Note) Rated operation and control voltage range, see page 62. Rated operation and control voltage range Item Susol VCB Remarks Motor AC 85~110% DC 85~110% Closing AC 85~110% DC 85~110% Trip AC 85~110% DC 70~110% Applied standards IEC (2008) 21

22 Retrofit - Accessory Auxiliary Contact: SA Installed inside of a breaker as an option Auxiliary contact It is a contact used to monitor ON/OFF status of a breaker from remote place. The auxiliary contacts supplied as standard configuration is 4a4b. 10a10b is also available on request. Item Standard Optional VL Type 4a4b 10a10b Counter: C Installed inside of a breaker as an option It displays the total number of ON/OFF operations of a breaker. 22

23 Keylock: A7 Installed inside of a breaker as an option The key is to unlock the locking device first to close the breaker electrically and mechanically. *How to operate - It is not possible to pull out the key in the unlocked position, possible only in locked status. - Pushing "OFF" switch of a breaker turn the key counter-clockwise to the locked position and pull it out. - It is not possible to close the breaker electrically and mechanically in the locked position. - Insert the key and turn clockwise and then the breaker can be closed electrically and mechanically. Keylock Button Padlock: A8 Installed outside of a breaker as an option It is to prevent manual operation of ON/OFF button due to user s wrong handling. It is not possible to handle ON/OFF operation under the Button lock status. * Key lock is not supplied. Button Padlock 23

24 Retrofit - Accessory Button Cover: A9 Installed outside of a breaker as an option It is a protection cover to prevent an accident due to unintended operation of ON/OFF button. Use the push-bar to operate the ON/OFF button. Push Bar Button Cover Lead wire: AA Supplied separately from a breaker as an option Lead wire It is to connect with the control circuit of a breaker from outside. (supply wire length: 2m) A type connector B type connector 24

25 Plug/Terminal for lead wire Supplied separately from a breaker as an option A type connector B type connector It is connector to connect with the connector installed in the breaker. (supply connectors and terminal only for lead wire) Type of connector is depends on the type of connector installed in the breaker- A or B. Compatible connector Installed outside the breaker as standard It enables the old type control cables to be connected with a new connector. It is required to use the existing circuit on the panel without changing. When ordering check the auxiliary contacts of the existing breaker. In the case of 7.2kV breakers there may be two kinds of housings that have the opposite terminal numbers between a closing coil and a trip coil according to the manufactred year. Please order carefully. * Pre-verification: Check first whether the CC terminal number is 3,4 or 5,6 to use below table. Connector description * When ordering please use the item code according to the number of auxiliary contacts of the existing products. Rated voltage Auxiliary contact Item code 5a4b Compatible connector, 7.2kV, 5a4b, A-type connector (CC terminal No. 3,4, TC terminal No. : 5.6) Compatible connector, 7.2kV,10a10b, A-type connector (CC terminal No. 3,4, TC terminal No. : 5.6) Compatible connector,7.2kv,5a4b,a-type connector (CC terminal No. 5,6, TC terminal No. : 3.4) 7.2kV (VL-06) 10a10b 5a4b Compatible connector,7.2kv,10a10b,a-type connector (CC terminal No. 5,6, TC terminal No. : 3.4) 10a10b Compatible connector, 24kV, 4a4b, A-type connector 4a4b Compatible connector, 24kV, 7a7b, A-type connector 7a7b Compatible connector, 24kV, 10a10b, A-type connector 24kV 10a10b Compatible connector, 24kV, 4a4b, B-type connector (VL-20) 4a4b Compatible connector, 24kV, 7a7b, B-type connector 7a7b Compatible connector, 24kV, 10a10b, B-type connector 10a10b

26 Retrofit - Accessory Position Switch Plate Installed outside the breaker as standard It is used to operate the Position switch which is installed on the cradle. Applies only if a position switch is installed to the 24kV cradle. Position S/W plate Position plate ass'y Installed outside the breaker as standard A device to determine the positions of the breaker and to provide grounding function. It is installed on the bottom of 24kV cradle and needs to replace the existing one. It is supplied as standard, however, as shown below, some models may not require the replacement. Position plate ass'y 26

27 Whether or not to replace the position plate ass'y Installed outside the breaker as standard There ate two types of cradles for 24kV breakers according to is present in the Cradle of two kinds, depending on the manufactred year. Please referr to the table below to determine whether or not to replace the position plate ass'y Description Position plate ass'y Appearance Manufactred year Until 1995 After 1995 Replacement No Yes Trip coil monitoring contact: AP Installed inside of a breaker as an option Device for monitoring the functions of the trip coils. TC A5 52a TRIP POWER SOURCE P 22 4a a Trip coil monitoring contact 4b b To monitor the trip coils connect its terminals with the trip coil monitoring relay as shown on the circuit diagram. - If the trip coil is normal: closed-circuit consisting - If the trip coil is damaged: open circuit 1) Terminals A5 and A6 monitor the trip coils in closed position of the breaker. 2) Terminal A6 and aux. contact terminal 34 monitor the trip coils in trip position of the breaker. Coil Test Unit is opional, which enable monitoring the coils by connecting in parallel with the trip coil operation switch. A6 N

28 Retrofit - Accessory Coil Test Unit: CTU Installed outside of a breaker as an option When no current flows through the coil it gives the test current which does not cause the coil to operate to check whether the coil is disconnected or not. - If the test current flows normally: coil normal - If the test current does not flow through: coil disconnected As it is connected in parallel with the control part of the coil the normal operation of the coil is not affected. Monitoring of the running coils is not possible. One test unit can monitor up to two coils. 1. Input voltage: AC/DC 75V~264V 2. Contact output 1) 2 a contacts for Fail indication and 2 a contacts for Alarm 2) 250Vac/10A Resistive, 30Vdc/10A Resistive 3. Disconnection test cycle is 12 seconds (Test LED blinks) 4. The default operation If Fail happens (coil disconnected), Fail LED turns on and the Fail contacts become short state. If Fail happens three times in series, Alarm LED turns on and the Alarm contacts become short state. In order to clear the Alarm status push up DIP switch on the front and then push down it (Off On Off) Input voltage AC/DC 75~264V Fail 1 24~250V (AC/DC) Shunt 1 Coil Alarm 1 24~250V (AC/DC) Shunt 2 Test Unit Fail 2 Alarm 2 Coil drive power(+) CTU Input voltage (+) CTU Input voltage (+) Coil drive power(-) Coil Coil drive power Coil test current Coil Test Unit Fail (LED) Fail (RELAY) Alarm (LED) Alarm (RELAY) 28

29 Retrofit - Control circuit diagram VL-06/20 P P A1 9 A3 A5 LS2 CS M C A <Connecting terminal arrangement> A type connector B type connector MOTOR POWER SOURCE TRIP POWER SOURCE 52a N A4 A6 N P N Auxiliary switch 10a 4a 4b CLOSE POWER SOURCE TC Closing Spring Contact(Charge complete indicating contact) Ø : External terminal of VCB 52 : VCB M : Spring charging motor TC : Trip coil C : Close coil 52a : Auxiliary switch (a) LS2 : Motor stop limit switch CS : Closing spring charged indication limit switch Note) 1. Close and Trip coil is One Pulse type, excluding Trip coil (DC110, 220V) 2. Above circuit diagram is based on "OFF" state of VCB and closing spring is charged. 3. Please make sure that keep the direction of P, N on this circuit diagram. Trip coil monitoring contact 10b

30 Retrofit - Dimensions 7.2kV, 20/25kA, 630/1250A Withdrawable (F/F/G type unit, phase distance 140mm) (630A) 6(630A) 12(1250A) 372(1250A) kV, 12.5kA, 630A Withdrawable (E type unit, phase distance 210mm)

31 24kV, 12.5kA, 630A Withdrawable (F type unit, phase distance 210mm) kV, 12.5kA, 630A Withdrawable (G type unit, phase distance 210mm) Ø

32 Retrofit - Dimensions 24kV, 12.5kA, 1250A 24kV, 25kA, 630/1250A Withdrawable (E type unit, phase distance 210mm) kV, 12.5kA, 1250A 24kV, 25kA, 630/1250A Withdrawable (F type unit, phase distance 210mm)

33 24kV, 12.5kA, 1250A 24kV, 25kA, 630/1250A Withdrawable (G type unit, phase distance 210mm) kV, 25kA, 2000A Withdrawable (E type unit, phase distance 210mm) Ø

34 Retrofit - Dimensions 24kV, 25kA, 2000A Withdrawable (F type unit, phase distance 210mm) kV, 25kA, 2000A Withdrawable (G type unit, phase distance 210mm) Ø

35 Technical data Electrical endurance by interrupting current Interrupting current [ka] 7.2kV, 630/1250A, 20/25kA Number[ops.] Number[ops.] Interrupting current [ka] 24kV, 630A, 12.5/16kA 35

36 Technical data Standard Use Environment for Susol VCB The operation characteristic of Vacuum Circuit Breaker such as insulation and endurance is often influenced largely by external environment and thus should be applied appropriately with conditions of the place where it is used taken into consideration. The following values are the limits have been set in accordance with IEC (IEC ) Ambient Temperature - maximum temperature: hour average maximum temperature: minimum temperature: -5 Altitude m or less above sea level Relative Humidity - 24 hours average value: 95% or less If a standard circuit breaker is used in high temperature exceeding 40, you are advised to use it according to the current corrected for each level of ambient temperature in catalog. If used in conditions of high humidity, the dielectric strength or electric performance may be degraded. It is highly recommended to use a dust cover or anti-humid agent if it is used in dusty and humid conditions. Excessive vibration may cause a trip breaker such as connection fault or flaw on mechanical parts. If it is left ON or OFF for a long time, it is recommended to switch load current on a regular basis. It is recommend to put it in the sealed protection if corrosive gas is prevalent. 36

37 Special Use Environment The circuit breaker is designed for use in standard use environment specified in Section 2. 1 of IEC Concerning the special use environments as below the special use conditions are required to be considered, thus please contact us in advance. - where altitude and ambient temperature are out of standard use environment.(-40 ) - where a strong sea breeze blows - when usually used in a humid place - where a lot of steam or oil steam exists - where explosive, flammable and other harmful gases might permeate the breaker - In a dusty place - where abnormal vibration or shock exists - where a lot of ice and snow exist - other special conditions Withstand voltage compensation according to altitude If the breaker is used in areas of sea level higher than 1000m the degradation of insulation performance should be taken into consideration (65) 38 28(42) 20 Ud [kv/1min] Power Frequency Withstand Voltage (82) 60 Ur[kV] Up [kv/ ] Impulse Withstand Voltage <Table 1> Criteria of withstand voltages by rated voltages specified in IEC

38 Technical data Special Use Environment Withstand voltage compensation according to altitude Correction parameter Altitude (m) <Fig.1 > withstand voltage correction parameter 1 by altitude (based on a required withstand voltage) Correction parameter Altitude (m) <Fig.2 > withstand voltage correction parameter 2 by altitude (based on a applicable withstand voltage) Ex) Selecting a breaker to be used in a place of 2500m above sea level with a rated voltage 7.2kV (correction parameter 1 applied) - correction parameter at 2500m is criteria of withstand voltage by rated voltage: Power Frequency Withstand Voltage (Ud) = 20kV, Impulse Withstand Voltage (Up) = 60kV - requirements withstand voltage criteria: Power Frequency Withstand Voltage (Ud) = = 24kV, Impulse Withstand Voltage (Up) = 72kV Therefore rated voltage 12kV breaker shall apply to satisfy the required withstand voltage. Ex) To apply a breaker with a rated voltage 12kV to the place of 2,500m above sea level (correction parameter 2 applied) - correction parameter at 2500m is dielectric strength of VCB : Power Frequency Withstand Voltage (Ud) = = 23.1kV, Impulse Withstand Voltage (Up) = = 62kV/ μs Therefore above breaker with rated voltage 12kV shall apply to rated voltage system 7.2kV at the altitude. 38

39 Rated current compensation in accordance with ambient temperature When normal ambient temperature exceeds the temperature specified in the environment the following formula help to select the applicable current. Ia= Ir ( (Θmax - Θa)/Θr) 1/2 Ia: allowable continuous current in the actual ambient temperature Θ a Ir: rated current at 40 ambient temperature Θ max : acceptable overall temperature of the hottest spot Θ a : the actual ambient temperature expected at -30 and 60 Θ r : allowable temperature in the hottest place at rated current Ex) The calculation of the applicable load current value when a breaker with rated current 2000A is used at 55 ambient temperature Ia = 2000 ((105-55)/65) 1/2 = = 1754A Ambient temperature ( ) Rated current (A) <Table 2> Allowable load current by ambient temperature <Figure 3> Allowable load current by ambient temperature 39

40 Technical data Comparison of GCB & VCB In the system of medium voltage lines VCB uses a vacuum which is an eco friendly medium for arc extinguishing. It also offers excellent interrupting properties and ease of maintenance and has expanded the area to the scope of the GCB as the overlap increases. Images Items GCB VCB Comparison results Remarks VI Arc extinguish medium and characteristics SF 6 gas - Greenhouse gas that causes global warming. - The toxic gas generated by chemical reactions due to arc energy. - 5kgf/ mm2 high pressure required. Vacuum - Green clean medium Torr vacuum rate to maintain. VCB is better than GCB Maintenance of the arc media - Periodic check and supplement the gas pressure required. - Automatic locking if gas pressure falls below the certain value. In the event of an accident while the gas valve is locked trip is disable and the load equipment can not be protected. - Available until the product life. - Always keep trip-first feature. When an accident occurs the trip-first feature functions to protect the equipment. VCB is better than GCB Rated voltage range (kv) 3.6~ ~36 GCB is better than VCB VCB has been increasing rapidly in the medium voltage systems. Applicable rate of transient recovery voltage (RRRV) Low High VCB is better than GCB IEC Annex M applied/ Interrupting performance verified. Development and trends Decline - Company M discontinued producing GCB. - Company A manufactures VCB in medium voltage GCB production factory. - GCB Maker S started the production of VCB. Increasing - Companies A and S have developed new VCBs. - Development trend that the voltage coverage of VCB expands. - VI increased coverage. (GIS, DAIS, SIS, etc.) VCB is better than GCB 40

41 Glossary for a circuit breaker Breaking current [ka] The fault current consists of AC and DC. Asymmetrical breaking current includes both parts and Symmetry breaking current includes only AC part. Generally the breaking current of a breaker means Symmetry breaking current Breaking capacity [MVA] Value of prospective current that a breaker is capable of breaking at a stated voltage. Breaking capacity (MVA) = x breaking current (ka) rated voltage (kv) substitute 1 for in case of single phase. Operating duty cycle The uniform operating cycle for use during the type tests of the circuit breaker in the short-circuit laboratory. Item Duty Remarks O - 1min - CO - 3min - CO Standard O = Open, C = Close CO - 15s - CO CO = Close - Open O - 0.3sec - CO - 1min - CO Fast reclosing CO = Close - Open O - 0.3sec - CO - 15s - CO Breaking time [Cycle] Opening time + Arc time Opening time [ms] Interval between the trip coil is energizing and the contacts of VI are opened Arc time [ms] Interval between the parting of the contact and the completely interrupting of the current. 41

42 Appendix : Type of circuit breakers Retrofit of a breaker Ur [V] 7.2 Isc [ka] Ir[A] Old VCB model name Retrofit VCB p=120 p=130 p=140 p=180 p=210 p=250 SVB type GVB type LVB type model name Compatible connector SVB-6CE-8B(400A) LVB-06E-08A/04 VL-06E08B04 A SVB-6CF-8B(400A) LVB-06F-08A/04 VL-06F08B04 A GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-08A/04 VL-06G08B04 A SVB-6CE-13(630A) LVB-06E-13A/06 VL-06E13B06 A SVB-6CF-13(630A) LVB-06F-13A/06 VL-06F13B06 A GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-13A/06 VL-06G13B06 A SVB-6CE-20(630A) LVB-06E-20A/06 VL-06E20L06 A SVB-6CF-20(630A) LVB-06F-20A/06 VL-06F20L06 A GVB-X/ /06Mf LVB-06G-20A/06 VL-06G20L06 A GVB-Y/ /06Mf LVB-06F-20R/06 A SVB-6CE-20(1250A) LVB-06E-20A/12 VL-06E20L13 A SVB-6CF-20(1250A) LVB-06F-20A/12 VL-06F20L13 A GVB-X/ /06Mf LVB-06G-20A/12 VL-06G20L13 A GVB-Y/ /06Mf LVB-06F-20R/12 A SVB-6CE-25(630A) LVB-06E-25A/06 VL-06E25L06 A SVB-6CF-25(630A) LVB-06F-25A/06 VL-06F25L06 A GVB-X/ /06Mf LVB-06G-25A/06 VL-06G25L06 A GVB-Y/ /06Mf LVB-06F-25R/06 A SVB-6CE-25(1250A) LVB-06E-25A/12 VL-06E25L13 A SVB-6CF-25(1250A) LVB-06F-25A/12 VL-06F25L13 A SVB-6CE-32(1250A) SVB-6CF-32(1250A) SVB-6CE-32(2000A) SVB-6CF-32(2000A) SVB-6CE-32(3150A) SVB-6CF-32(3150A) GVB-X/ /06Mf LVB-06G-25A/12 VL-06G25L13 A GVB-Y/ /06Mf LVB-06F-25R/12 A GVB-X/ /06Mf GVB-Y/ /06Mf GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06E-32A/12 LVB-06F-32A/12 LVB-06G-32A/12 LVB-06E-32A/20 LVB-06F-32A/20 LVB-06G-32A/20 LVB-06E-32A/30 LVB-06F-32A/30 LVB-06G-32A/30 42

43 Ur [V] Isc [ka] Ir[A] Old VCB model name Retrofit VCB p=120 p=130 p=140 p=180 p=210 p=250 SVB type GVB type LVB type model name Note) 1. Ur = Rated voltage 2. Isc = Rated short-circuit current 3. Ir = Rated normal current 4. p = Phase distance 5.This application is to place a new breaker in the existing cradle of the old VCB SVB-6CE-40B(1250A) SVB-6CF-40B(1250A) SVB-6CE-40B(2000A) SVB-6CF-40B(2000A) SVB-6CE-40B(3150A) SVB-6CF-40B(3150A) SVB-20CE-13B(630A) SVB-20CF-13B(630A) SVB-20CE-25(630A) SVB-20CF-25(630A) SVB-20CE-25(630A) SVB-20CF-25(630A) GVB-X/ /06Mf GVB-Y/ /06Mf GVB-X/ /06Mf GVB-Y/ /06Mf GVB-X/ /06Mf GVB-Y/ /06Mf GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06E-40A/12 LVB-06F-40A/12 LVB-06G-40A/12 LVB-06E-40A/20 LVB-06F-40A/20 LVB-06G-40A/20 LVB-06E-40A/30 LVB-06F-40A/30 LVB-06G-40A/30 Compatible connector GVB-X/ /20Mf LVB-20E-13A/06 VL-20E13M06 A/B LVB-20F-13A/06 VL-20F13M06 A/B GVB-Y/ /20Mf LVB-20G-13A/06 VL-20G13M06 A/B GVB-X/ /20Mf LVB-20E-13A/12 VL-20E13M13 A/B LVB-20F-13A/12 VL-20F13M13 A/B GVB-Y/ /20Mf LVB-20G-13A/12 VL-20G1M13 A/B GVB-X/ /20Mf LVB-20E-25A/06 VL-20E25M06 A/B LVB-20F-25A/06 VL-20F25M06 A/B GVB-Y/ /20Mf LVB-20G-25A/06 VL-20G25M06 A/B GVB-X/ /20Mf LVB-20E-25A/12 VL-20E25M13 A/B LVB-20F-25A/12 VL-20F25M13 A/B GVB-Y/ /20Mf LVB-20G-25A/12 VL-20G25M13 A/B GVB-X/ /20Mf LVB-20E-25A/20 VL-20E25M20 A/B LVB-20F-25A/20 VL-20F25M20 A/B GVB-Y/ /20Mf LVB-20G-25A/20 VL-20G25M20 A/B 43

44 Appendix : Type of circuit breakers Retrofit of a cradle Ur [V] 7.2 Isc [ka] Ir[A] Old VCB model name Old CRADLE model name Retrofit VCB model name p=120 p=130 p=140 p=180 p=210 p=250 SVB type GVB type LVB type LVB type Product Name Standard VCB model name SVB-6CE-8B(400A) LVB-06E-08A/04 LCL-06E-08A/04 VCL-06E08B04 VL-06E08A04 A SVB-6CF-8B(400A) LVB-06F-08A/04 LCL-06F-08A/04 VCL-06F08B04 VL-06F08A04 A GVB-X/ /06Mf GVB-Y/ /06Mf Compatible connector LVB-06G-08A/04 LCL-06G-08A/04 VCL-06G08B04 VL-06G08A04 A SVB-6CE-13(630A) LVB-06E-13A/06 LCL-06E-13A/06 VCL-06E13B06 VL-06E13A06 A SVB-6CF-13(630A) LVB-06F-13A/06 LCL-06F-13A/06 VCL-06F13B06 VL-06F13A06 A GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-13A/06 LCL-06G-13A/06 VCL-06G13B06 VL-06G13A06 A SVB-6CE-20(630A) LVB-06E-20A/06 LCL-06E-20A/06 VCL-06E20,25N06 VL-06E20A06 A SVB-6CF-20(630A) LVB-06F-20A/06 LCL-06F-20A/06 VCL-06F20,25N06 VL-06F20A06 A GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-20A/06 LCL-06G-20A/06 LCL-06E- 20,25R/06-Y1 LCL-06F- 20,25R/06-Y2 VL-06E20A06 VL-06F20A06 SVB-6CE-20(1250A) LVB-06E-20A/12 LCL-06E-20A/12 VCL-06E20,25N13 VL-06E20A13 SVB-6CF-20(1250A) LVB-06F-20A/12 LCL-06F-20A/12 VCL-06F20,25N13 VL-06F20A13 GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-20A/12 LCL-06G-20A/12 LCL-06E- 20,25R/12-Y1 LCL-06F- 20,25R/12-Y2 VL-06E20A13 VL-06F20A13 SVB-6CE-25(630A) LVB-06E-25A/06 LCL-06E-25A/06 VCL-06E20,25N06 VL-06E20A06 A SVB-6CF-25(630A) LVB-06F-25A/06 LCL-06F-25A/06 VCL-06F20,25N06 VL-06F20A06 A GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-25A/06 LCL-06G-25A/06 LCL-06E- 20,25R/06-Y1 LCL-06F- 20,25R/06-Y2 VL-06E25A06 VL-06F25A06 SVB-6CE-25(1250A) LVB-06E-25A/12 LCL-06E-25A/12 VCL-06E20,25N13 VL-06E25A13 SVB-6CF-25(1250A) LVB-06F-25A/12 LCL-06F-25A/12 VCL-06F20,25N13 VL-06F25A13 GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-25A/12 LCL-06G-25A/12 LCL-06E- 20,25R/12-Y1 LCL-06F- 20,25R/12-Y2 VL-06E25A13 VL-06F25A13 SVB-6CE-32(1250A) LVB-06E-32A/12 LCL-06E-32A/12 VCL-06E32N13-AX VL-06E32A13 A SVB-6CF-32(1250A) LVB-06F-32A/12 LCL-06F-32A/12 VCL-06F32N13-AX VL-06F32A13 A GVB-X/ /06Mf GVB-Y/ /06Mf Note) 1. Ur = Rated voltage 2. Isc = Rated short-circuit current 3. Ir = Rated normal current 4. p = Phase distance 5. In case of replacing a breaker including the cradle please order a standard type breaker with a retrofit cradle. LVB-06G-32A/12 LCL-06G-32A/12 A/B A/B A/B A/B A/B A/B A/B A/B 44

45 Ur [V] Isc [ka] Ir[A] Old VCB model name Old CRADLE model name Retrofit VCB model name p=120 p=130 p=140 p=180 p=210 p=250 SVB type GVB type LVB type LVB type Product Name SVB-6CE-32(2000A) LVB-06E-32A/20 LCL-06E-32A/20 SVB-6CF-32(2000A) LVB-06F-32A/20 LCL-06F-32A/20 GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-32A/20 LCL-06G-32A/20 SVB-6CE-32(3150A) LVB-06E-32A/30 LCL-06E-32A/30 SVB-6CF-32(3150A) LVB-06F-32A/30 LCL-06F-32A/30 GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-32A/30 LCL-06G-32A/30 SVB-6CE-40B(1250A) LVB-06E-40A/12 LCL-06E-40A/12 SVB-6CF-40B(1250A) LVB-06F-40A/12 LCL-06F-40A/12 GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-40A/12 LCL-06G-40A/12 SVB-6CE-40B(2000A) LVB-06E-40A/20 LCL-06E-40A/20 SVB-6CF-40B(2000A) LVB-06F-40A/20 LCL-06F-40A/20 GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-40A/20 LCL-06G-40A/20 SVB-6CE-40B(3150A) LVB-06E-40A/30 LCL-06E-40A/30 VCL-06G32N20- AX LCL-06F- 40R/12-Y5 Standard VCB model name VL-06G32A20 VH-06F40A13 SVB-6CF-40B(3150A) LVB-06F-40A/30 LCL-06F-40A/30 VCL-06Y40A32-Y7 VH-06F40B32 A SVB-20CE-13B(630A) SVB-20CF-13B(630A) SVB-20CE-25(630A) SVB-20CF-25(630A) GVB-X/ /06Mf GVB-Y/ /06Mf LVB-06G-40A/30 LCL-06G-40A/30 GVB-X/ /20Mf LVB-20E-13A/06 LCL-20E-13A/06 LVB-20F-13A/06 LCL-20F-13A/06 GVB-Y/ /20Mf LVB-20G-13A/06 LCL-20G-13A/06 GVB-X/ /20Mf LVB-20E-13A/12 LCL-20E-13A/12 LVB-20F-13A/12 LCL-20F-13A/12 GVB-Y/ /20Mf LVB-20G-13A/12 LCL-20G-13A/12 GVB-X/ /20Mf LVB-20E-25A/06 LCL-20E-25A/06 LVB-20F-25A/06 LCL-20F-25A/06 GVB-Y/ /20Mf LVB-20G-25A/06 LCL-20G-25A/06 Compatible connector A A 45

46 Appendix : Type of circuit breakers Retrofit of a cradle Ur [V] Isc [ka] Ir[A] Old VCB model name Old CRADLE model name Retrofit VCB model name p=120 p=130 p=140 p=180 p=210 p=250 SVB type GVB type LVB type LVB type Product Name SVB-20CE-25(630A) SVB-20CF-25(630A) GVB-X/ /20Mf GVB-Y/ /20Mf GVB-X/ /20Mf GVB-Y/ /20Mf Note) 1. Ur = Rated voltage 2. Isc = Rated short-circuit current 3. Ir = Rated normal current 4. p = Phase distance 5. In case of replacing a breaker including the cradle please order a standard type breaker with a retrofit cradle. LVB-20E-25A/12 LVB-20F-25A/12 LVB-20G-25A/12 LVB-20E-25A/20 LVB-20F-25A/20 LVB-20G-25A/20 LCL-20E-25A/12 LCL-20F-25A/12 LCL-20G-25A/12 LCL-20E-25A/20 LCL-20F-25A/20 LCL-20G-25A/20 Standard VCB model name Compatible connector 46

47 MEMO 47

48 For your safety, please read user's manual thoroughly before operating. Contact the nearest authorized service facility for examination, repair, or adjustment. Safety Instructions Please contact 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 LSIS Co.,Ltd. All rights reserved. HEAD OFFICE LS-ro 127 (Hogye-dong) Dongan-gu Anyang-si Gyeonggi-do Korea Tel. (82-2) , 4911, 4914 Fax. (82-2) CHEONG-JU PLANT Cheong-Ju Plant #1, 95 Baekbong-ro Heungdeok-gu Cheongju-si Chungcheongbuk-do Korea Specifications in this catalog are subject to change without notice due to continuous product development and improvement. Global Network LSIS USA Inc. Chicago, America Address: 2000 Millbrook Drive, Lincolnshire, Chicago, IL 60069, United States of America Tel: Fax: seungheonc@lsis.com LSIS (Middle East) FZE Dubai, U.A.E. Address: LOB 19 JAFZA VIEW TOWER Room 205, Jebel Ali Freezone P.O. Box , Dubai, United Arab Emirates Tel: Fax: e mail: hschoib@lsis com LSIS Europe B.V. Schiphol-Rijk, Netherlands Address: 1st. Floor, Tupolevlaan 48, 1119NZ,Schiphol-Rijk, The Netherlands Tel: Fax: junshickp@lsis.biz LSIS-VINA Co., Ltd. Hanoi, Vietnam Address: Nguyen Khe - Dong Anh - Ha Noi - Viet Nam Tel: Fax: sjbaik@lsis.biz LSIS-VINA Co., Ltd. Hochiminh, Vietnam Address: 41 Nguyen Thi Minh Khai Str. Yoco Bldg 4th Floor, Hochiminh City, Vietnam Tel: Fax: hjchoid@lsis.biz LSIS Gurgaon Office Gurgaon, India Address: 109 First Floor, Park Central, Sector-30, Gurgaon , Haryana, India Tel: Fax: hwyim@lsis.biz LSIS Japan Co., Ltd. Tokyo, Japan Address: Toykokurakubu Bldg. 13th floor, 3-2-6, Kasumigaseki, Chiyoda-ku, Tokyo, Japan TEL: FAX: jschuna@lsis.biz LSIS Shanghai Office Shanghai, China Address: Room 32 floors of the Great Wall Building, No North Zhongshan Road, Putuo District, Shanghai, China Tel: Fax: mkleea@lsis.com LSIS Beijing Office Beijing, China Address: B-Tower 17FL.Beijing Global Trade Center B/D. No.36, BeiSanHuanDong-Lu, DongCheng-District, Beijing , P.R. China Tel: ,7 Fax: sunmj@lsis.com.cn LSIS Guangzhou Office Guangzhou, China Address: Room 1403, 14/F, New Poly Tower, No.2 Zhongshan Liu Road, Guangzhou , P.R. China Tel: Fax: chenxs@lsis.com.cn LSIS Chengdu Office Chengdu, China Address: Room Floor, huamin hanjun internationnal Building, No1 Fuxing Road Chengdu, , P.R. China Tel: Fax: yangcf@lsis.com.cn LSIS Qingdao Office Qingdao, China Address: Room 2001,20/F,7B40, Galaxy Building, No.29 Shandong Road, Shinan District, Qingdao , P.R. China Tel: Fax: htroh@lsis.biz LSIS (Wuxi) Co., Ltd. Wuxi, China Address: 102-A, National High & New Tech Industrial Development Area, Wuxi, Jiangsu, , P.R.China Tel: Fax: wangzy@lsis.com.cn Dalian LSIS Co., Ltd. Dalian, China Address: No.15, Liaohexi 3-Road, Economic and Technical Development zone, Dalian , China Tel: Fax: tangyh@lsis.com.cn Retrofit Vacuum Circuit Breakers(E) /(01) Printed in Korea STAFFCOM