Switchgear

Advanced Load Break Switch Solutions for Safe and Efficient Power Distribution

Epoxy Insulated Load Break Switches for 25.8kV Underground Line

This is a sulfur hexafluoride (SF6) gas-free, eco-friendly switchgear applying an arc-suppression format vacuum interrupter (VI), installed on power distribution lines and used for line branching and classification, enabling manual, automatic, and remote operation.

Enhancing Safety & Sustainability

  • Prevents 3-phase short accidents with a separated structure for individual phase insulator housing

  • Maintenance-free setup, with no need for a gas or pressure release and locking device [Maintenance Free]

  • Eco-friendly, using no sulfur hexafluoride (SF6) gas, and resolves danger of explosion from pressurized expansion of the tank section

  • Uses epoxy for strength against contaminated environments, enabling application even in dusty or soiled areas

  • Uses vegetable-based insulating oil on the grounded section, giving it 3-4 times better resistance to aging and oxidation than the existing mineral oil and ensuring a semi-permanent lifespan.

Product
Specification

Product Specification

Product Specification

Category

Rating

Model [SSYE-PPAD]

44-A

33-A

44-M

33-M

Rated voltage

25.8 kV

Rated frequency

60Hz

Rated current

600A

Load current switching

600A/30A(100%/5%)

Cable charging current

25A/7.5A (100%/30%)

Line charging current switching

1.5A

Loop current switching

600A

Rated short time current

12.5kA, rms

Rated short circuit
making currrent

32.5kA, peak

Power frequency withstand voltage

60kV

Lightning impulse withstand voltage

125kV(main circuit) / 150kV(ground circuit)

Size (W×D×H, cm)

160×86× 110

120×86× 110

160×86× 100

120×86× 100

Rated operating voltage

AC 220V, DC 24V

-

Operating type

Automatic

Manual

Applied specifications

Registration Technical Specifications of KEPCO (GS-5925-0011)

Dielectric strength

Dielectric strength

Current switching capacity

Current switching capacity

Gas Insulated Load Break Switches
for 25.8kV Underground Line

Gas Insulated Load Break Switches for 25.8kV Underground Line

The gas-insulated load break switch, a switchgear that uses sulfur hexafluoride (SF6) gas with superior insulating and arc-suppression performance, is installed on power distribution lines and used for line branching and classification, enabling manual, automatic, and remote operation.

High Safety and Precision in Measurement

  • Maintenance-free, ultra-lightweight for convenient installation

  • Insulation and breaking by sulfur hexafluoride (SF6) gas, simple grounding

  • Enables line voltage and current measurement

  • High safety, perfectly water-resistant and anti-corrosive

Product
Specification

Product Specification

Product Specification

Category

Rating

Model [SSYE-GPAD]

44-A

44-M

33-M

Rated voltage

25.8 kV

Rated frequency

60Hz

Rated current

600A

Load current switching

600A/30A(100%/5%)

Cable charging current

25A/7.5A (100%/30%)

Line charging current switching

1.5A

Loop current switching

600A

Rated short time current

12.5kA, rms

Rated short circuit
making currrent

32.5kA, peak

Power frequency withstand voltage

60kV

Lightning impulse withstand voltage

125kV

Rated SF6 gas pressure

0.5 bar.G at 20℃

Size (W×D×H, cm)

160×80× 130

160×80× 120

120×80× 120

Rated operating voltage

AC 220V,
DC 24V

-

-

Operating type

Automatic

Manual

Manual

Applied specifications

Registration Technical Specifications of KEPCO (ES-5925-0002)

Dielectric strength

Dielectric strength

Current switching capacity

Current switching capacity

Eco-designed Epoxy Insulated Load
Break Switches for 25.8kv Overhead Line

This is a 22.9 kV switch for overhead power distribution lines, applying the epoxy-insulated and vacuum interrupt formats instead of the existing sulfur hexafluoride (SF6) gas-insulated format, and is of a structure that does not require maintenance due to gas leakage or replenishment.

Enhanced Safety & Performance

  • Applies internal vacuum interruption format

  • Switching performance improvement and rise in capacity to 630A rated current

  • Prevents 3-phase short accidents with a separated structure for individual phases

  • Resolved danger of high-pressure tank explosion from sulfur hexafluoride (SF6) gas insulation format

  • Uses epoxy bushing for strength against contaminated environments, enabling application even in dusty or soiled areas

  • [Maintenance Free] setup, with no need for a gas or pressure release and locking device

Product
Specification

Product Specification

Product Specification

Category

Rating

Model [SSYE-ECO]

A

M

Rated voltage

25.8 kV

Rated frequency

60Hz

Rated current

630A

Load current switching

630A/31.5A(100%/5%)

Cable charging current

25A/7.5A (100%/30%)

Line charging current switching

1.5A

Loop current switching

630A

Rated short time current

12.5kA, rms

Rated short circuit
making currrent

32.5kA, peak

Power frequency withstand voltage

60kV

Lightning impulse withstand voltage

150kV

Size (W×D×H, mm)

838 × 540 × 900

Rated operating voltage

AC 220V,
DC 24V

-

Operating type

Automatic

Manual

Applied specifications

Registration Technical Specifications of KEPCO (ES-5925-0004, updated specification)

Dielectric strength

Dielectric strength

Current switching capacity

Current switching capacity

Gas Insulated Load Break Switches
for 25.8kV Overhead Line

This switch, used with 22.9 kV-Y overhead power distribution lines, was made using sulfur hexafluoride (SF6) gas, which shows outstanding insulation and arc-suppression performance, and is the optimum product available for use in line branching and classification.

High Reliability & Safety Features

  • Applies sulfur hexafluoride (SF6) gas insulation format with superior insulation and arc-suppression performance

  • Ensures 5,000 operation cycles

  • Prevents explosions from increases in gas pressure due to internal short-circuits by applying a gas release device

  • Switching accidents from high internal gas pressure prevented using pressure reduction indication and a locking mechanism

Product
Specification

Product Specification

Product Specification

Category

Rating

Model [SSYE-PGS]

A4

M4

Rated voltage

25.8 kV

Rated frequency

60Hz

Rated current

400A

Load current switching

400A/20A(100%/5%)

Cable charging current

25A/7.5A (100%/30%)

Line charging current switching

1.5A

Loop current switching

400A

Rated short time current

12.5kA, rms

Rated short circuit
making currrent

32.5kA, peak

Power frequency withstand voltage

60kV

Lightning impulse withstand voltage

150kV

Rated operating voltage

AC 220V,
DC 24V

-

Operating type

Automatic

Manual

Applied specifications

Registration Technical Specifications of KEPCO (ES-5925-0003)

Dielectric strength

Dielectric strength

Current switching capacity

Current switching capacity

Talk to our Specialist.

Our team will get in touch with you shortly. We are ready to discuss your needs and any questions you might have in detail.

Talk to our Specialist.

Our team will get in touch with you shortly. We are ready to discuss your needs and any questions you might have in detail.

Talk to our Specialist.

Our team will get in touch with you shortly. We are ready to discuss your needs and any questions you might have in detail.

Copyright © 2024 ULS CORPORATE INC.

Copyright © 2024 ULS CORPORATE INC.

Copyright © 2024 ULS CORPORATE INC.