ISO9001 ISO14001

JOONGWONOPEN CUTOUTS Type SQ

OUTDOOR Distribution(14.4kV through 38kV)

JOONGWON ELECTRICCORPORATION2

OPEN CUTOUTS Type SQOUTDOOR Distribution(14.4kV through 38kV)

Parallel-groove connectortin plated cast brass. For ease of conductorconnection, accommodates two conductorsof unlike size in a single connector. Otherstyles of connectors are also available.

Upper Contactssilver-to -silverat both surfaces

Attachment hooksfor Loadbuster, Heavy constructionalso serves to guidetube during closing

Fuse tubefiber-lined epoxy fiber glassliner that's virtually impervious to water ingress.Special UV-resistant finish assures long life.

Trunnion pocketseures tube in hinge during closing

Sturdy ferrulespinned to top and bottom of tube forpermanent alignment, Large, accessiblelifting ring

Flippergives high-speed terminalseparation. quick cable flip-out, and(in conjunction with the toggle joint)reduces transmission of forces tofuse link during closing

Trunnion castingsurfaces around trunnion bear on broadhinge surfaces to keep tube in alignmentduring closing

HingeBasic material is stainless.But upon user's request,can be replace bronze casting.

Toggle jointassures reliable dropoutafter operation.

Lower contacts(not visible)tsilver-to-silver, provide dual currentpath, in dependent of hinge pivot.Stainless-steel back up sprin gsprevent arcing when tube rises inhinge during recoil

Bridproof-design porcelain insulatorhigher insulation characteristics than

IEEE distribution - CutOut

Backup springstainless steel.

Contact pressure not dependenton current carrying parts

Recoil barheavy galvanized steel(which is also usedfor inserts. hangers. structural bolts andnuts)

✽Porcelain Insulator Type

■ Construction

www.joongwon.co.kr 3

✽Porcelain Insulator Type

■ Performance

Short-Circuit Interrupting Rating, Ampere, RMS, Asymmetrical③ and Symmertrical④

(One-Shot rating, where applicable, shown in parentheses)

60-Hertz Short-Circuit Interrupting Ratings① ─ Per IEEE C37.41-2008

OVERHEAD-POLE-TOP STYLES-Both Three-Phase and Single-Phase Application②

ContinuousRating

Style ⑥

VoltageRating/kV,Nom

VoltageRating/kV,Max

VoltageRating/kV,BIL

Frequency,㎐

Leakagedistance to

ground,minimum, Inches ★

100Amperes 200Amperes

Catalognumber

Short-Circuit

interrupting

current

4.16 thru15

15●thru27●

27▲ thru38▲

10000

(12000)*

7100

(8000)*

16000

10600

-

7200

(8000)*

10000

(12000)*

7100

(8000)*

10000

(12000)*

7100

(8000)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

-

- - - - - - - - - -

12000

8000

12000

8000

- - -

- - - -

8000

5600

8000

56007200

(8000)*

① Consult the nearest JOONGWON Sales Office for 50-hertz ratings.

② Asymmetrical and symmetrical ratings are given for each catalog number in each applicable system-voltage range. In each case,

the asymmetrical rating is given first(in bold-face type) and symmetrical rating is given second(in light-face type). Rating in parentheses are the

associated one-short rating(see Note *)

③ Nominal asymmetrical rating are based on total available short-circuit current of the circuit including the DC component, in accordance with IEEE

standards.

④ Symmetrical rating assigned are based on available symmetrical short-circuit current at locations where X/R ratio is equal to 8 (for Cutout Catalog

number 80420) or 12 (for all other overhead─pole-top style cutouts). IEEE C37.41-2000 specifies these X/R ratios, as applicable, depending on

cutout voltage rating and interrupting current rating.

⑤ Uses either nonremovable or removable buttonhead fuse links.

⑥ Uses removable buttonhead fuse links only.

⑦ E - Extra heavy duty, U - Ultra heavy duty, H - Heavy duty.

● Applicable for protection of single-phase-to-neutral circuits (lines or transformers) only, and grounded-wye connected capacitor banks in

solidly-grounded-neutral (multigrounded-neutral) systems─where the leakage distance to ground meets user’s requirements.

✽ One-shot rating, based on replacement of cutout tube only.

▲ Applicable for protection of single-phase-to-neutral circuits (lines or transformers) only, and grounded-wye connected capacitor banks in

solidly-grounded-neutral (multigrounded-neutral) systems.

+ Meets 170-kV BIL rating requirement of IEC Publication 60282-2.

SystemVoltage, kV

U⑥U⑥E⑤

14.4 14.4 20 25.8 25 25 25 25 27/34.5 27/34.5 25 25

15 15 24 27 27 27 27 27 38 38 27 27

95 95 125 125 125 125 150 150 150+ 200 125 150

60 60 50

8½ 8½ 11 11 13 19 26 26▲ 39/52/65 11 1

60 60

17(430mm)

80420 80443 80442G 80442H 80442 80442T 80442S 80445H 80445 80432 80432S80445TR05/08/10

JOONGWON ELECTRICCORPORATION4

■ Production series

80445 80445H 80442G

80442 80442 80443

OPEN CUTOUTS Type SQOUTDOOR Distribution(14.4kV through 38kV)

✽Porcelain Insulator Type

www.joongwon.co.kr 5

Parallel-groove connectortin plated cast brass. For ease of conductor connection,accommodates two conductors of unlike size in a single connector.Other styles of connectors are also available.

Recoil barheavy galvanized steel(which is also used forinserts. hangers. structural bolts and nuts)

Upper Contactssilver-to -silverat both surfaces

Silicone Insulation Cover- Option

Fuse tubefiber-lined epoxy fiber glassliner that's virtually impervious to water ingress.Special UV-resistant finish assures long life.

Attachment hooksfor Loadbuster,Heavy constructionalso serves to guidetube during closing

Trunnion pocketseures tube in hinge during closing

Sturdy ferrulespinned to top and bottom of tubefor permanent alignment, Large,accessible lifting ring

Trunnion castingsurfaces around trunnion bear on broadhinge surfaces to keep tube in alignmentduring closing

Toggle jointassures reliabledropout after operation.

HingeBasic material is stainless. But upon user'srequest, can be replace bronze casting.

Lower contacts(not visible)tsilver-to-silver, provide dual current path, independent of hinge pivot. Stainless-steel back upsprin gs prevent arcing when tube rises in hingeduring recoil

Composite-polymer silicone insulator30~50% lighter than porcelain, highlybreak resistant, provides betterperformance in coastal and high-pollution areas.

Backup springstainless steel.Contact pressure not dependenton current carrying parts

✽Composite - Polymer Silicone Insulator Type

■ Construction

Flippergives high-speed terminalseparation. quick cable flip-out, and(in conjunction with the toggle joint)reduces transmission of forces tofuse link during closing

JOONGWON ELECTRICCORPORATION6

OPEN CUTOUTS Type SQOUTDOOR Distribution(14.4kV through 38kV)

Short-Circuit Interrupting Rating, Ampere, RMS, Asymmetrical③ and Symmertrical④

(One-Shot rating, where applicable, shown in parentheses)

60-Hertz Short-Circuit Interrupting Ratings① - Per IEEE C37.41-2008

OVERHEAD-POLE-TOP STYLES-Both Three-Phase and Single-Phase Application②

ContinuousRating

Style ⑥

VoltageRating/kV,Nom

VoltageRating/kV,Max

VoltageRating/kV,BIL

Frequency,㎐

Leakagedistance to

ground,minimum,mm ★

100Amperes

Catalognumber

Short-Circuit

interrupting

current

4.16 thru15

15●thru27●

27▲ thru38▲

-

7200

(8000)*

-

7200

(8000)*

- - - -

12000

8000

10000

(12000)*

7100

(8000)*

10000

(12000)*

7100

(8000)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

12000

(16000)*

8000

(10600)*

-

-

① Consult the nearest JOONGWON Sales Office for 50-hertz ratings.

② Asymmetrical and symmetrical ratings are given for each catalog number in each applicable system-voltage range. In each case, the asymmetrical rating is given

first(in bold-face type) and symmetrical rating is given second(in light-face type). Rating in parentheses are the associated one-short rating(see Note *)

③ Nominal asymmetrical rating are based on total available short-circuit current of the circuit including the DC component, in accordance with IEEE standards.

④ Symmetrical rating assigned are based on available symmetrical short-circuit current at locations where X/R ratio is equal to 12 for all other overhead─pole-top style

cutouts. IEEE C37.41-2000 specifies these X/R ratios, as applicable, depending on cutout voltage rating and interrupting current rating.

⑤ Uses either nonremovable or removable buttonhead fuse links.

⑥ Uses removable buttonhead fuse links only.

⑦ E - Extra heavy duty, U - Ultra heavy duty, H - Heavy duty.

● Applicable for protection of single-phase-to-neutral circuits (lines or transformers) only, and grounded-wye connected capacitor banks in solidly-grounded-

neutral (multigrounded-neutral) systems─where the leakage distance to ground meets user’s requirements.

✽ One-shot rating, based on replacement of cutout tube only.

▲ Applicable for protection of single-phase-to-neutral circuits (lines or transformers) only, and grounded-wye connected capacitor banks in solidly-grounded-

neutral (multigrounded-neutral) systems.

SystemVoltage, kV

U⑥

20

24

125

50

570

80445PG

25.8

27

125

600

80442PH

25.8

27

125

600

80442P

25

27

150

660

80445PH

27/38

38

170

685

80445P

60

■ Performance

✽Composite - Polymer Silicone Insulator Type

www.joongwon.co.kr 7

80445P 80445PH 80445PG

80442PH 80442P Example : Installation

of insulation cover

■ Production series

✽Composite - Polymer Silicone Insulator Type

727-9, Wonsi-dong, Danwon-gu, Ansan-si, Gyeonggi-do, KoreaTel : 82-31-492-6863〜4 / 82-31-492-6866(DIR.)Fax : 82-31-492-2620 http//www.joongwon.co.krE-mail : joongwon@joongwon.co.kr

■ Switches•Fuse Cut Out Switch(14.4㎸ ~ 38㎸)

•25.8kV Pole Mounted SF6 Gas Insulated Load Break Switch

(Automatic-630/400A, Manual-400A)

•25.8㎸ SF6 Gas Insulated Load Break Switch For Underground

(600A, 4W/4S-Automatic/Manual, 3W/3S-Manual)

•25.8kV Auto Section Switch (200A, Automatic/Manual)

•25.8kV Auto Section Switch (Indoor type)

(200A, Automatic/Manual)

•25.8kV Interrupter Switch (Single/Double)

•24kV Load Break Switch (Indoor type)

•25.8kV Disconnecting Switch

■ Breakers•7.2kV 8kA Vacuum Circuit Breaker (400A)

•7.2kV 12.5kA Vacuum Circuit Breaker (630A)

•7.2kV 20kA Vacuum Circuit Breaker (630/1250A)

•7.2kV 31.5kA Vacuum Circuit Breaker (630/1250/2000A)

•15kV 25kA Vacuum Circuit Breaker (630/1250A)

•24kV 12.5kA Vacuum Circuit Breaker (630/1250A)

•24kV 25kA Vacuum Circuit Breaker (630/1250/2000A)

•7.2/12/24kV 12.5kA Vacuum Circuit Breaker (630A)

- Magnetic Actuator type

•25.8kV 25kA MCSG Vacuum Circuit Breaker (630/1250A)

■ Fuses•25.8kV Power Fuse (Outdoor type) (1~200K)

•25.8kV Power Fuse (Indoor type) (1~200K, 300E, 400E)

•25.8kV Power Fuse Unit (1~200K)

•25.8kV Fuse Link (1~100K)

•Wire Fuse (38A, 50A)

•Current Limiting Fuse for the protection of semiconductor devices

•24kV High Voltage Current Limiting Fuse

•15.5kV Current Limiting Fuse

•7.2kV Medium Voltage Current Limiting Fuse (1~100A)

•Current Limiting Fuse Holder (7.2/24kV)

■ Absorbers / Arresters•Surge Arrester (4, 5, 9, 18kV-5kA)

•Polymer Lightning Arrester (6, 12, 18kV-5kA)

•Polymer Surge Absorber (3.6, 7.2, 18kV)

■ Metering Out Fit•25.8kV Metering Out Fit (5/5A~400/5A)

•25.8kV PT (25~200VA)

•25.8kV GPT (25/50~100/200VA)

■ Indicators•Faulted Circuit Indicator

■ Conductive Concrete•Earthing Products

■ Photo Etching

J & W PRODUCTS

JOONGWON ELECTRIC CORPORATION