EHV Substation Connectors (AEC-16)

SUBSTATION STUD CONNECTORS

HUBBELL ® Power Systems

EHV WELDED EXPANSION STUD CONNECTORS FOR TUBE TYPE HVEDST/EVEDST

ALUMINUM HVEDST/ EVEDST

Aluminum alloy weldment expansion stud connectors are designed for corona free service at 345 and 500 KV respectively. Pressure plates are puddle-welded to straps on three (3) sides. Contact surfaces on pressure plates have bonded copper liners. Connector is designed for ± one inch expansion. Specify “H” in catalog number if schedule 80 EHIPS tubing is to be used; example: HVEDSTH. Proper guide ball and laminations will be furnished. Spacing of corona rings is based on use over transformer expansion cap or dome of 17” diameter at 345 KV, or 22” diameter at 500 KV. Contact factory for information on other diameters. Material: Stud Body and Cap – 255 bronze alloy Shunt Body, Flatback and Guided Ball – 356-T6 aluminum alloy Corona Ring – 6061-T6 aluminum alloy Pressure Plates and Ring Brackets – 6061-T6 aluminum alloy Laminated Straps – 1100-0 aluminum alloy Stud Clamping Hardware – stainless steel Tube Clamping and Ring Mounting Hardware – aluminum alloy Guide Mounting Hardware – galvanized steel

Refer to installation chart DC-6788 on page 91 for instructions.

345 KV AND 500 KV Line-to-Line Applications

Stud Dia. In./Thd.

Aluminum Conductor Size IPS

Dimensions – Inches (mm)

Installation Chart Line Number

Approx. Wt. Ea. Lbs. (Kg)

Catalog Number

Ring DIA.

A

B

F

J

345 KV Applications

21.0 (9.53) 21.6 (9.80)

30 (762.00) 30 (762.00) 30 (762.00) 30 (762.00) 30 (762.00) 30 (762.00) 30 (762.00) 30 (762.00)

4 3/4 (120.65) 4 3/4 (120.65) 5 3/8 (136.53) 5 3/4 (146.05) 6 (152.40) 6 1/8 (155.58) 5 1/4 (133.35) 5 1/4 (133.35)

2 1/2 (63.50) 2 1/2 (63.50) 2 3/4 (69.85) 3 (76.20) 3 (76.20) 3 (76.20) 3 (76.20) 3 (76.20)

19 3/8 (492.13) 19 3/8 (492.13) 19 3/8 (492.13) 19 3/8 (492.13) 19 3/8 (492.13) 19 3/8 (492.13) 19 3/8 (492.13) 19 3/8 (492.13)

1/2 (12.70) 1/2 (12.70) 1/2 (12.70) 1/2 (12.70) 1/2 (12.70) 1/2 (12.70) 1/2 (12.70) 1/2 (12.70)

2

HVEDST1420G12 1 1/2 -12

2

2

HVEDST1424G12 1 1/2 -12

2 1/2

22.6 (10.25) 25.0 (11.34) 28.3 (12.84) 31.2 (14.15) 26.6 (12.07) 27.4 (12.43)

2

HVEDST1430G12 1 1/2 -12

3

2

HVEDST1440G12 1 1/2 -12

4

1

HVEDST1450G12 1 1/2 -12

5

1

HVEDST1460G12 1 1/2 -12

6

3

HVEDST2020G12

2-12

2

3

HVEDST2024G12

212

2 1/2

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