History
2022
- 09.23 Registered a patent for the sealing structure of lever mechanism for gas-insulated switchgear (Patent No. 2022-0027299)
2021
- 03.11 Green technology certification of 72.5kv eco-friendly gas-insulated switchgear development technology
- 05.22 Registered a patent for lever drive structure for gas-insulated switchgear (Patent No. 10-2020-2256452)
- 10.22 Acquired ISO45001 certification
- 10.28 Registered a patent for cart structure for internal equipment of switchboard(Patent No. 10-2021-0047845)
2019
- 07.30 Registered utility model for frame connection bracket for switchboard(No. 20-2017-0005508)
- 07.31 Registered a patent for gas-insulated switchgear using carbon dioxide mixed gas (Patent No. 10-2019-0036512)
- 12.31 Partial completion of Sihwamtv plant (22,604.3㎡)
2018
- 02. Registered a patent for prefabricated frame for switchboard(Patent No. 10-1835722)
- 05. Design registrations for switchboards
2017
- 06. Meteorological business registration (weather equipment)
- 08. Developed a 72.5 kV 20 kA eco-friendly gas circuit breaker(SF6 Gas Free → Natural Gas(CO2 + 02))
2016
- 02. Acquired a patent for gas-insulated switchgear (Patent No. 10-1596389)
- 05. Acquired a patent for the 3-stage pull-out device of the low voltage motor control board unit (Patent No. 10-1627678)
2015
- 08. Developed the 2nd generation cluster ionizer
- 08. Developed a 29kV gas-insulated switchgear
- 09. Electronic watt-hour meter AE-TYPE type approval (1 type)
- 10. Acquired a patent for switchboard diagnosis device (Patent No. 10-1559725)
- 11. Developed an MCC specialized for 480V stability
2014
- 08. Developed anenclosed switchboard (24kV 25kA)
- 08. Developed a circuit breaker (24kV 25kA)
- 10. Registered utility model for generator of ion cluster (No. 20-0474836)
- 12. Received the 20 Million Dollar Export Tower
2013
- 04. Developed an IEC61850-based protection relay
- 04. Awarded the Industrial Service Medal (CEO Jeon Dong-Joon)
- 10. Selected as a promising SME in Gyeonggi-do
- 12. Confirmation of an excellent SME in green management - expired
2012
- 08. Watt-hour meter type approval (AC single-phase 2-wire type; electronic type, SD12-210GR) (Korea Testing Certification Institute)
2011
- 05. Acquisition of KS for watt-hour meter (economic type- bottom type) (Korea Standards Association)
- 11. Electronic watt-hour meter (Utility model registration No. 20-0453737)
- 11. Developed an enclosed switchboard and a vacuum circuit breaker (12 kV 1250 A/2000 A, 40 kA) (arc resistance test)
2010
- 02. Watt-hour meter type approval (AC 3-phase 4-wire type; electronic type, SD34-204) (Korea Testing Certification Institute)
- 02. Watt-hour meter type approval (AC 3-phase 4-wire type; electronic type, SD34-212) (Korea Testing Certification Institute)
- 02. Watt-hour meter type approval (AC single phase 2-wire type; electronic type, SD12-204) (Korea Testing Certification Institute)
- 02. Watt-hour meter type approval (AC single phase 2-wire type; electronic type, SD12-212) (Korea Testing Certification Institute)
- 04. Watt-hour meter type approval (AC single phase 2-wire type; electronic type, SD12-204EU) (Korea Testing Certification Institute)
- 06. Concluded an industry-academia cooperation agreement with Sudo Electric Technical High School
- 09. First delivery of watt-hour meter (economic type) to Korea Electric Power Corporation
2009
- 04. Registered meter manufacturing business (Ansan City)
- 04. Acquired KEPCO low voltage gauge standard specification certificate (Korea Electric Power Corporation Electric Power Research Institute)
- 11. Watt-hour meter type approval (AC single phase 2-wire type; electronic type, SD12-204E) (Korea Testing Certification Institute)
- 11. Received the Jang Young-sil Award for cluster ionizer
2008
- 03. Ion cluster generator and its generation method (Patent No. 10-812540)
- 04. Ion generating air purifying device and air purifying method (Patent No. 10-823496)
- 12. Registered as a company specializing in new and renewable energy (Ministry of Knowledge Economy)
2007
- 06. Selected as a purchase conditional new product development project (gas-insulated switchboard)
- 11. Supplied cluster ionizers to Hyundai Motor Company
2006
- 01. Developed a 25.8 kV gas-insulated load switchgear 600A 12.5 kV 125 kV BIL/600A 12.5 kV 150 kV BIL
- 02. Developed a 24 kV 630 A 12.5 kA 60 Hz vacuum circuit breaker
- 02. Developed a 7.2 kV (630 A/1250 A/2000 A) 25 kA 60 Hz vacuum circuit breaker
- 06. Acquired INNO-BIZ (Technology Innovation SME) certification
- 06. PT simple disconnection part of gas-insulated switchgear (Utility model registration No. 420586)
- 06. Gas-insulated switchgear 3-stage disconnector driving device (Utility model registration No. 420968)
- 06. Grounding operation mechanism for gas-insulated multi-circuit breakers (Utility model registration No. 20-0429022)
2005
- 01. Completed the GIS assembly line and clean room and dustproof room of Plant 2
- 01. Developed an MCC (MOTOR CONTROL CENTER) 2000 A/600 A 40kA/3 seconds
- 01. Developed a 25.8 KV gas-insulated switchgear (ALTS: Automatic Load Transfer Switch) 1250 A 25 ㎄
- 02. Developed a 25.8 KV gas-insulated switchgear (4P 3-stage disconnector) 630 A 25 kA
- 03. Developed a 7.2kV vacuum circuit breaker (VCB) 2000 A/1250 A 40 kA
- 03. Developed an MCSG (METAL CLAD SWITCHGEAR) enclosed switchgear 7.2 kV 2000 A 40 kA/3 seconds
- 03. Developed an MCSG (METAL CLAD SWITCHGEAR) enclosed switchgear 7.2 kV 1250 A 40 kA/3 seconds
- 05.
- Acquisition of site for Plant 3 (623-2, Shinjeong-ri, Jeonui-myeon, Yeongi-gun, Chungcheongnam-do)
- Land: 3,305.70㎡, Building: 1,172.27㎡
- 08. Plant 1 GIS manufacturing facility line extension (112.5㎡), total floor space: 10,571.7㎡
- 09. Developed a 25.8 kV gas-insulated load switchgear 600 A 12.5 kA
- 11. Installed an odor measurement station (28㎡), total floor space: 10,599.7㎡
- 11.
- 7.2kV MCSG(METAL CLAD SWITCHGEAR) enclosed switchboard
- Developed 2000A 40kA/3seconds, 1250A 40kA/3seconds, and 3000A 40kA/3seconds
2004
- 04. Developed a 7.2 KV vacuum circuit breaker (VCB) 630 A 12.5 kA
- 04. Developed a 25.8 KV gas-insulated switchgear (LBS) 630 A 25 kA
- 04. Developed a 25.8 KV gas-insulated switchgear (VCB) 630 A/1250 A 25 kA
- 10. Developed a 25.8 KV gas-insulated switchgear (GIS) 2000 A/600 A 25 kA
2003
- 08. Exhaust gas post-processing device’s smoke accumulation prevention method/domestic patent registration (Patent No. 0397169)
- 08. Exhaust gas post-processing device/domestic patent registration (Patent No. 0397170)
2002
- 03. Expanded Plant 2, total floor space: 7,439 ㎡
- 05. Exhaust gas treatment reduction method and device for internal combustion engine and external combustion engine / Chinese patent registration (Patent No. 87562)
- 07.Expanded the Head Office and Plant 1, total floor area: 10,378.5㎡
2001
- 01.Exhaust gas treatment reduction method and device for internal combustion engine and external combustion engine / US patent registration (Patent No. 6168689)
- 09. Exhaust gas treatment reduction method and device for internal combustion engine and external combustion engine/ Japanese patent registration (Patent No. 3233411)
2000
- 03. Exhaust gas treatment reduction method and device for internal combustion engine and external combustion engine/ British patent registration (Patent No. 2324053)
- 10. Exhaust gas treatment reduction method and device for internal combustion engine and external combustion engine/ German patent registration (Patent No. 196 81 728)
1999
- 03. Acquired ISO 14001 certification (Korea Institute of Industrial Technology Evaluation and Planning)
- 05. Exhaust gas treatment reduction method and device for internal combustion engine and external combustion engine / Singapore patent registration(Patent No. 9803110-7)
- 12. Merged with Samcheon Electric Co., Ltd.
- 12. Established Plant 2 (B10-81, Banwol Industrial Complex, 647, Choji-dong, Danwon-gu, Ansan-si, Gyeonggi-do), land: 6,328.9㎡, total floor area: 4,920.3㎡
1998
- 03. Decided to divide the price of one share from 5,000 won to 500 won
- 05. Exhaust gas treatment reduction method and device for internal combustion engine and external combustion engine /
Domestic patent registration(Patent No. 148563)
- 09. Selected as a venture company (Small and Medium Business Administration)
- 10. Particulate reduction device for industrial incinerator and harmful gas purification device / Domestic patent registration (Patent No. 173190)
- 10. Exhaust gas purifying device/ Domestic patent registration (Patent No. 173191)
1997
- 07. Accredited evaluation test by completion of development of particulate reduction device (Korea Institute of Machinery and
Materials)
1996
- 05. Acquired group standard quality certification approval certificate (Korea Electric Industry Cooperative)
- 08. Passed the development test adopted by Korea Electric Power Corporation for residential gas switchgear (PGS)
1995
- 01. Electric appliance type approval (Industrial Advancement Administration)
- 03. Designated as a specific heat use equipment construction business (Ansan City)
- 03. Started sales of Solar
- 04. Passed the development test adopted by Korea Electric Power Corporation for underground line switchgear (GLBS)
- 04. Passed the development test for air circuit breaker (ACB) 4P 1600 A or less
- 05. Acquisition of license for telecommunication construction business (wired communication machine class 2)
1994
- 07. 154/345KV power system protection relay (DIGITAL method) technical partnership extension (Dongji Co., Ltd. in Japan)
- 09. Banwol factory office building expansion 330㎡ (100 pyeong)
- 10. Acquired ISO 9001 certification (German TUV & Korea Institute of Industrial Technology)
- 10. Development of SOLAR water heater
- 11. Completion of clean room for gas-insulated electrical equipment manufacturing
- 11. Type approval for specific heat use equipment (Energy Management Corporation)
- 12. Registered as a type 1 electrical appliance manufacturer (Gyeonggi-do)
- 12. Passed the digital protection relay development test for 22.9KV distribution lines
1993
- 05. Passed the 25.8KV gas-insulatedswitchgear KEPCO adoption development test, and KEPCO decided to use it
- 06. Passed the 25.8 KV outdoor VCB KEPCO adoption development test, and KEPCO decided to use it
- 12. Established a corporate affiliated research center (Korea Industrial Technology Association)
- 12. Technical cooperation for underground cable switchgears (LBS) (KARL PFISTERER, Germany)
1992
- 03. Approval of gas-insulated switchgear manufacturing technology introduction (Nilsin Electric Co., Ltd. in Japan)
(Ministry of Commerce and Industry)
- 03. Approval ofANSI standard vacuum circuit breaker manufacturing technology introduction (Dongji Co., Ltd. in Japan)
(Ministry of Commerce and Industry)
- 05. Designated as a listed company inthe part 1 from the part 2 of the Korea Stock Exchange
- 08. Completion of welfare center (total floor space: 568 pyeong)
1991
- 02. Acquisition of dormitory site (755 pyeong)
- 11. Acquisition of KS mark permission for vacuum circuit breakers
- 12. Selected as an excellent quality control factory
1990
- 02. Expansion of circuit breaker assembly room (floor space: 380㎡ (115 pyeong))
- 11. Received the One Million Dollar Export Tower
1989
- 06.
- 11.(Registration No.: 897032) Listed on the Korea Stock Exchange
1987
- 05. Changed the company name to Seondo Electric Co., Ltd.
- 07. Banwol factory expansion completed (floor space: 2,925㎡ (855 pyeong))
1985
- 07. Acquisition of a license for firefighting facility construction business (Governor of Gyeonggi-do)
- 10. Acquisition of an import and export business license (Governor of Gyeonggi-do)
1981
- 11. Development of vacuum circuit breakers (passed the adoption development test of Korea Electric Power Corporation, and
KEPCO decided to use it)
1980
- 01. Relocation of head office (B5-6, Banwol Industrial Complex, Wonwon-ri, Gunja-myeon, Siheung-gun, Gyeonggi-do)
- 04. Designated as a switchboard specialized factory (Ministry of Commerce and Industry)
1979
- 12. Completion of a new factory (B5-6 Banwol Industrial Complex, 734 Wonsi-dong, Danwon-gu, Ansan-si, Gyeonggi-do)
Land: 8,561.90㎡ (2,590 pyeong),total floor space: 4,049㎡ (1,225 pyeong)
1977
- 02. Relocation of the head office (#68, 310, Eulji-ro 4-ga, Jung-gu, Seoul)
1973
- 07. Joined the Korea Electrical Industry Cooperative
1972
- 01. EstablishedSeondo Enterprise Co., Ltd.
- 03. Acquisition of the 1st type license for electrical construction business (No. 400)
