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Stud to Tube (Expansion)

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
CATALOG
NUMBER		 STUD DIA.
IN./THD.		 ALUMINUM
CONDUCTOR
SIZE IPS		 DIMENSIONS – INCHES (MM) RING
DIA.		 INSTALLATION
CHART LINE
NUMBER		 APPROX.
WT. EA.
LBS. (KG)
A B F J
345 KV APPLICATIONS
HVEDST-1420-G-12 1 1/2-12 2 4 3/4
(120.65)		 2 1/2
(63.50)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 2 21.0
(9.53)
HVEDST-1424-G-12 1 1/2-12 2 1/2 4 3/4
(120.65)		 2 1/2
(63.50)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 2 21.6
(9.80)
HVEDST-1430-G-12 1 1/2-12 3 5 3/8
(136.53)		 2 3/4
(69.85)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 2 22.6
(10.25)
HVEDST-1440-G-12 1 1/2-12 4 5 3/4
(146.05)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 2 25.0
(11.34)
HVEDST-1450-G-12 1 1/2-12 5 6
(152.40)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 1 28.3
(12.84)
HVEDST-1460-G-12 1 1/2-12 6 6 1/8
(155.58)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 1 31.2
(14.15)
HVEDST-2020-G-12 2-12 2 5 1/4
(133.35)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 3 26.6
(12.07)
HVEDST-2024-G-12 2-12 2 1/2 5 1/4
(133.35)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 3 27.4
(12.43)
HVEDST-2030-G-12 2-12 3 5 7/8
(149.23)		 3 1/4
(82.55)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 3 28.1
(12.75)
HVEDST-2034-G-12 2-12 3 1/2 6
(152.40)		 3 3/8
(85.73)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 3 28.8
(13.06)
HVEDST-2040-G-12 2-12 4 5 3/4
(146.05)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 2 29.9
(13.56)
HVEDST-2050-G-12 2-12 5 6
(152.40)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 1 32.4
(14.70)
HVEDST-2060-G-12 2-12 6 6 1/8
(155.58)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 1 34.7
(15.74)
HVEDST-2220-G-12 2 1/4-12 2 5 1/4
(133.35)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 3 26.5
(12.02)
HVEDST-2224-G-12 2 1/4-12 2 1/2 5 1/4
(133.35)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 3 28.0
(12.70)
HVEDST-2230-G-12 2 1/4-12 3 5 3/4
(146.05)		 2 5/8
(66.68)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 3 29.0
(13.15)
HVEDST-2240-G-12 2 1/4-12 4 5 3/4
(146.05)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 2 30.7
(13.93)
HVEDST-2250-G-12 2 1/4-12 5 6
(152.40)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 1 34.3
(15.56)
HVEDST-2260-G-12 2 1/4-12 6 6 1/8
(155.58)		 3
(76.20)		 19 3/8
(492.13)		 1/2
(12.70)		 30
(762.00)		 1 37.1
(16.83)
500 KV APPLICATIONS
EVEDST-1430-G-12 1 1/2-12 3 5 3/8
(136.53)		 2 3/4
(69.85)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 2 26.1
(11.84)
EVEDST-1440-G-12 1 1/2-12 4 5 3/4
(146.05)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 2 28.5
(12.93)
EVEDST-1450-G-12 1 1/2-12 5 6
(152.40)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 1 31.8
(14.42)
EVEDST-1460-G-12 1 1/2-12 6 6 1/8
(155.58)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 1 34.7
(15.74)
EVEDST-2030-G-12 2-12 3 5 7/8
(149.23)		 3 1/4
(82.55)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 3 31.6
(14.33)
EVEDST-2040-G-12 2-12 4 5 3/4
(146.05)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 2 33.4
(15.15)
EVEDST-2050-G-12 2-12 5 6
(152.40)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 1 35.9
(16.28)
EVEDST-2060-G-12 2-12 6 6 1/8
(155.58)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 1 38.8
(17.60)
EVEDST-2230-G-12 2 1/4-12 3 5 3/4
(146.05)		 2 5/8
(66.68)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 3 32.5
(14.74)
EVEDST-2240-G-12 2 1/4-12 4 5 3/4
(146.05)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 2 34.2
(15.51)
EVEDST-2250-G-12 2 1/4-12 5 6
(152.40)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 1 37.8
(17.15)
EVEDST-2260-G-12 2 1/4-12 6 6 1/8
(155.58)		 3
(76.20)		 22 1/8
(561.98)		 1/2
(12.70)		 24
(609.60)		 1 40.0
(18.14)
  • Refer to type HVEDST-90 for listings for bustube 90° to stud.
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