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2-bundle tension 3B normal standard
(60ton)(intermediate line)

2-bundle tension 3B inverted standard
(60ton)(intermediate line)

2-bundle tension 3B normal block-penetrating
(60ton)(intermediate line)

2-bundle tension 3B inverted block-penetrating
(60ton)(intermediate line)

2-bundle tension 6B normal standard
(80ton)(power line)

2-bundle tension 6B inverted standard
(80ton)(power line)

2-bundle tension 6B normal block-penetrating
(80ton)(power line)

2-bundle tension 6B inverted block-penetrating
(80ton)(power line)

3-bundle tension 6B normal standard
(120ton)(power line)

3-bundle tension 6B inverted standard
(120ton)(power line)

3-bundle tension 6B normal block-penetrating
(120ton)(power line)

3-bundle tension 6B inverted block-penetrating
(120ton)(power line)

2-bundle suspension 3B
(42ton)(intermediate line)

2-bundle suspension 6B
(60ton)(power line)

2-bundle suspension 6B
(80ton)(power line)

HVDC Insulator String Hardware
Function and use
Insulator hardware used in HVDC transmission lines, with neutral conductors configured as 3-bundle (3B) and power conductors as 6-bundle (6B) Insulator strings are arranged in 2-bundle for neutral conductors and in 2-bundle or 3-bundle for power conductors
Product Category Product
Tension-type hardware 2-bundle tension 3B normal standard(60ton)
(intermediate line)
2-bundle tension 3B inverted standard(60ton)
(intermediate line)
2-bundle tension 3B normal block-penetrating(60ton)
(intermediate line)
3-bundle tension 6B normal standard(80ton)
(power line)
3-bundle tension 6B inverted standard(80ton)
(power line)
3-bundle tension 6B normal block-penetrating(80ton)
(power line)
3-bundle tension 6B inverted block-penetrating(80ton)
(power line)
3-bundle tension 6B normal standard(120ton)
(power line)
3-bundle tension 6B inverted standard(120ton)
(power line)
3-bundle tension 6B normal block-penetrating(120ton)
(power line)
3-bundle tension 6B inverted block-penetrating(120ton)(power line)
Suspension-type hardware 2-bundle suspension 3B(42ton)
(intermediate line)
2-bundle suspension 6B(60ton)
(power line)
2-bundle suspension 6B(80ton)
(power line)

Types and Specifications

KEPCO Engineering Standard Item Number Model Type Test Load (kgf)
GS-5975-0207
: 500kV HVDC Power Line Insulator String

GS-5975-0206
: 500kV HVDC Neutral Line Insulator String
127120 DC 6 DS-060 2-bundle suspension insulator string hardware (60T) 60,000
127121 DC 6 DS-080 2-bundle suspension insulator string hardware (80T) 80,000
127122 DC 6 DT-080 Ⅰ 2-bundle tension insulator string hardware (normal, standard) 80,000
127837 DC 6 DT-080 Ⅱ 2-bundle tension insulator string hardware (normal, penetrating)
127123 DC 6 DT-080R Ⅰ 2-bundle tension insulator string hardware (inverted, standard)
127838 DC 6 DT-080R Ⅱ 2-bundle tension insulator string hardware (inverted, penetrating)
127124 DC 6 TT-120 Ⅰ 3-bundle tension insulator string hardware (normal, standard) 120,000
127839 DC 6 TT-120 Ⅱ 3-bundle tension insulator string hardware (normal, penetrating)
127125 DC 6 TT-120R Ⅰ 3-bundle tension insulator string hardware (inverted, standard)
127840 DC 6 TT-120R Ⅱ 3-bundle tension insulator string hardware (inverted, penetrating)
127126 DC 6 JV-021 V-type insulator string hardware (jumper support) 21,000
127116 DC 3 DS-042 2-bundle suspension insulator string hardware 42,000
127117 DC 3 DT-060 Ⅰ 2-bundle tension insulator string hardware (normal, standard) 60,000
127835 DC 3 DT-060 Ⅱ 2-bundle tension insulator string hardware (normal, penetrating)
127118 DC 3 DT-060R Ⅰ 2-bundle tension insulator string hardware (inverted, standard)
127835 DC 3 DT-060R Ⅱ 2-bundle tension insulator string hardware (inverted, penetrating)
127119 DC 3 JI-021 I-type insulator string hardware (jumper support) 21,000