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Company Information

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
  • 10.22 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)