EUNSUNG Engineering

Products

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Metal-Clad SwitchGear

The metal-clad switchgear (MCSG) of EUNSUNG Engineering Co., Ltd. has undergone full-type tests including the internal arc classification test for IEC 62271-200 specifications.

Reduction of installation space

The product will greatly reduce the installation area to suit our customers who put safety first, such as power plants (hydraulic, thermal cogeneration), industrial plants (semiconductors, petrochemicals, steel-making), and social overhead capital facilities (subways, railroads, and airports).

  • Reduces the installation area by up to 57% compared to conventional extra-high tension switchgears
  • Reduces half width of capacity less than 1250A by 20%
  • Main circuit PT panel and incoming VCB panel are integrated into one panel
Caution
  • ① For models below 24KV 25KA 1,250A
  • ② In order to apply the above size, CT, PT and VCB models specified on this website must be applied

Increased safety and reliability

MCSG, which has the best protection grade among air insulated closed switchgears, ensures that explosions during an internal arc accident do not affect the surrounding equipment.

  • Closed switchgear with the highest protection grade among air insulated products with compartments of metal partitions (LSC2B-PM)
  • Applying IEC 62271-200 specifications, passed full-type tests, including the internal arc classification test
  • Mechanical interlock to prevent malfunctions, device for inserting and pulling breaker while door is closed, and location anchorage system for securing the operating position of the breaker
  • Hinge and locker with rigid structure to resist pressure
  • Metal shutter and shutter padlock in breaker room for safety during maintenance
  • Insulated bushing for high reliability buses
  • Application of insulation caps for the insulation of earthing switch and interlock structure for safety
  • Converter with reinforced insulation wall
  • 100% self-production from structural design, sheet metal working, processing, painting to all assembly processes

Improved repair, maintenance and convenience

  • EUNSUNG Engineering carries out comprehensive preventive and preservation activities through continuous maintenance and inspection and prediction of remaining life. The extra-high tension, metal-clad switchgear of EUNSUNG Engineering offers such convenience in maintenance and inspection.

    • Susol-VCB of LSIS employs the middle-tire method that is easy to maintain
    • It secures sufficient space for easy preservation and is a low-tension room with the upper part of the duct for electrical wiring made of steel materials
    • Independent bus structure that prevents accidental impact on the adjacent switchgear

Digital switchgear that can be linked to digital data

Digital switchgear that has employed the digital power protection monitoring device allows data to be linked to the remote monitoring and control system

Switchgear with anti-seismic design

MCSG implements anti-seismic suitability through anti-seismic analysis and structural design suitable for a seismic environment through dynamic analysis, and the company produces and supplies switchgears with anti-seismic features that satisfy various specifications.

Rating and specifications

25.8KV MCSG | Designation of Excellent Product
Section Contents
Rated Current 630/1250A
Rated Frequency 60Hz
Rated Interrupting 25kA/3sec
Internal Arc Test 25kA/1sec
Rated Insulation Level Power frequency withstand voltage
(Power Frequency) 		60kV/1min
Impulse withstand voltage
(1.2 x 50㎲) 		125kV
Degree of Protection IP 42
Loss of Service Continuty and Partition class LSC2B-PM
Accessibility and Internal Arc Classification AFLR
Seismic rating under the technical standards for safety and reliability of telecommunication facilities 7Grade
7.2KV MCSG | Designation of Excellent Product
Section Contents
Rated Current 630/1250/2000A
Rated Frequency 60Hz
Rated Interrupting 25kA/3sec
Internal Arc Test 25kA/1sec
Rated Insulation Level Power frequency withstand voltage
(Power Frequency) 		20kV/1min
Impulse withstand voltage
(1.2 x 50㎲) 		60kV
Degree of Protection IP 42
Loss of Service Continuty and Partition class LSC2B-PM
Accessibility and Internal Arc Classification AFLR
Seismic rating under the technical standards for safety and reliability of telecommunication facilities 7Grade

Composition overview

External structure, appearance and installation measurement

  • Residual capacity Wide Depth Height
    630A 800 2,000 2,350
    1,250A

    Note) Width and depth may vary by system

  • Residual capacity Wide Depth Height
    630A 700 2,200 2,450
    1,250A
    2,000A

    Note) Width and depth may vary by system