Built to Protect.
INTRODUCTION
Hubbell Vaults – the preferred alternative
Providing the protection you depend on for transformers and power cables, Hubbell Underground Vaults can be buried flush with the ground where they’re literally out of sight.
Dramatically improving the appearance of the surrounding landscape, Hubbell Vaults are
conveniently lightweight but strong enough to meet ANSI TIER rating requirements. They
can be used as a pad for single-phase transformers and a variety of load-break junctions.
Page 2 | April 2011
TABLE OF CONTENTS
Introduction....................................................................... 2
Table of Contents.............................................................. 3
Underground Distribution Switchgear Vaults................. 4
Installation......................................................................5-6
DRAWINGS:
Switchgear Vaults with Torsion Assist Covers...............7-8
Numbering System Key................................................... 11
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TABLE OF CONTENTS
Below Grade Sectionalizing Vaults.............................9-10
Underground Distribution Switchgear Vaults
Hubbell Underground Distribution Switchgear Vaults utilize both Polymer Concrete and FRP construction to guarantee a simple, lightweight, and lower-cost alternative to the heavy, expensive
concrete vaults used for underground distribution switchgear. Hubbell’s designs ensure freedom
from rust and corrosion in all environments. Our unique technology enables us to construct vault
enclosures with an unequaled blend of strength, durability, and ease of installation. We offer multiple sizes for both four-way and six-way switchgear.
Designed To Be Superior
Lightweight - Hubbell Underground Distribution Switchgear FRP Vaults weigh just 4,000 pounds. Compare that to traditional concrete enclosures, which are incredibly heavy and can weigh as much as 20
times more. The greatly reduced weight means considerable savings on labor, time, and expense.
SWITCHGEAR ENCLOSURES
Strength – Hubbell Vaults boast compressive, flexural, and tensile strengths three to five times higher
than traditional concrete.
Cost Savings - Unlike much heavier concrete models, Hubbell Vaults can be set with excavation equipment already on site.
Less Red Tape - No special transportation permits are required.
Fewer Headaches - No cranes are required for installation or access.
Cover Options - There are multiple easy-access cover openings available including torsion, polymer
concrete, or ultra-lightweight composite covers. Torsion covers open to 180 degrees for ease of access.
Additional Options - These may include composite work and switchgear platforms, composite ladders,
racking, terminators, and pulling eyes.
Page 4 | April 2011
Installation
1
Site Selection
Select an appropriate site or location that is suitable
for a Vault. Site features to consider prior to final
selection include:
o Utility easements
o Streets
o Parking lots
o Parking lot entrances
o Shipping and delivery docks
o Waste-removal containers (dumpsters)
Attach nylon straps or chains to the lifting bolts.
2
Conduits and Piping Preparation
• Trench and/or plow conduit.
• Bore under road crossings & railroads.
• Mark the depth of conduit using marker tape.
3
Excavate
• Excavate approximately 1-2 feet longer and
wider than the Vault, and 6-8 inches deeper than
the depth of the Vault.
• Add a rodent barrier if necessary.
Lift and position enclosure with backhoe.
CONTINUED . . .
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INSTALLATION
Guidelines for installing Hubbell Vaults may vary depending on size, location, and environmental
factors. Hubbell Vaults are designed for non-deliberate traffic areas only. Install Vaults by following four simple steps.
Install and Protect
INSTALLATION
Environmental factors should always be
considered when installing enclosures
of all sizes. Local conditions could dictate additions during installation, such
as Concrete Collars or Internal Bracing.
These additions provide security, support, and protection.
4
Placement
• Remove Vault from the pallet to prepare for placement.
• Place nylon straps or chains around the lifting bolts and secure it to the backhoe bucket. The angle
between the strap and the Vault should not be less than 45 degrees.
• Lift the Vault and place it into the hole.
• Place gravel in the Vault and around the side if necessary.
• Lift the Vault to the proper elevation, allowing gravel to run out under the Vault.
• Check the Vault’s elevation with a level and range pole, and make the necessary adjustments with the
backhoe bucket.
• Once the Vault is set to the proper elevation, reinstall the covers, and back fill.
• If 95% compaction is required, internal bracing should be used on all manufacturers’ Vaults to prevent
deflection and damage.
Place gravel in the enclosure and around the side. Lift enclosure to let gravel
run underneath.
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Dimensions / Data
CORRUGATED SWITCHGEAR VAULTS WITH TORSION ASSIST COVERS
VAULT DRAWINGS
Corrugated Switchgear Vaults with Torsion Assist Covers
A
B
C
D
E
F
G
TIER
DESIGN /
TEST LOAD
PALLET
QTY
PART NO.
102 1/2
84 1/2
98
74 1/2
35 5/8
35 5/8
59 3/4
8
8,000 / 12,000
1
A1A7896501
112
114
107
109
48
48
88
8
8,000 / 12,000
1
A1A9696501
108
116
104
109
48
41
88
8
8,000 / 12,000
1
A1A1011501
Page 7 | April 2011
Dimensions / Data
VAULT DRAWINGS
POLYMER CONCRETE SWITCHGEAR VAULTS
Polymer Concrete Switchgear Vaults
Cover Option
TIER
DESIGN / TEST LOAD
PALLET QTY
PART NO.
Torsion Assist
8
8,000 / 12,000
1
PB9393Z502
Polymer Concrete Removable
8
8,000 / 12,000
1
PB9393Z505
NOTE: Ultralight removable covers are available. Contact customer service for further details.
Page 8 | April 2011
Dimensions / Data
CORRUGATED BELOW GRADE SECTIONALIZING VAULTS - 1 PHASE
MOUNTING BAR INSTALLATION
Corrugated Below Grade Sectionalizing Vaults – 1 Phase Box
B
C
WEIGHT
PALLET QTY
PART NO.
49 7/8
32 3/8
36
218
1
B1A3048507
49 7/8
32 3/8
48
236
1
B1A3048508
NOTE: Factory installed junctions available by customer request.
Tier 15 & Tier 22 ratings are available. Contact customer service for further details.
Corrugated Below Grade Sectionalizing Vaults – 1 Phase Cover
DESCRIPTION
TIER
DESIGN/
TEST LOAD
WEIGHT
PALLET QTY
PART NO.
w/ 2 bolts
8
8,000 / 12,000
165
3
C1A304803A
NOTE: Ultralight removable covers are available. Contact customer service for further details.
Page 9 | April 2011
VAULT DRAWINGS
A
Dimensions / Data
CORRUGATED BELOW GRADE SECTIONALIZING VAULTS - 3 PHASE
VAULT DRAWINGS
MOUNTING BAR INSTALLATION
OPTION B
OPTION A
Corrugated Below Grade Sectionalizing Vaults – 3 Phase Box
A
B
C
OPTION
WEIGHT
PALLET QTY
PART NO.
62 1/2
34 1/2
36
A
263
1
B1A3060509
62 1/2
34 1/2
48
A
286
1
B1A3060510
52 7/8
52 7/8
36
B
301
1
B1A4848510
52 7/8
52 7/8
48
B
327
1
B1A4848511
NOTE: Factory installed junctions available by customer request.
Tier 15 & Tier 22 ratings are available. Contact customer service for further details.
Corrugated Below Grade Sectionalizing Vaults – 3 Phase Cover
DESCRIPTION
TIER
DESIGN/
TEST LOAD
WEIGHT
PALLET QTY
PART NO.
w/ 2 bolts
8
8,000 / 12,000
165
3
C1A306003A
w/ 2 bolts
8
8,000 / 12,000
165
3
C1A484803A
NOTE: Ultralight removable covers are available. Contact customer service for further details.
Page 10 | April 2011
Catalog Numbering System for Polymer Concrete Vaults
1
Weight
2
Style
3,4 5,6
Size
7,8,9,10
Variation
P
B
93 93
Z502 (Torsion Assist Cover)
Z505 (Polymer Concrete Cover)
NUMBERING SYSTEM KEY
Catalog Numbering System for Corrugated Vaults
1
Item
A (Assembly)
B (Box)
C (Cover)
2
Assembly/
Cover
1 (1/2-13 UNC Penta Head Bolts)
3
Style
4,5,6,7
Size
8,9,10
Variation
A (Corrugated Wall Box/Square
Corner Cover - Tier 8)
7896
9696
3060
4848
3048
XXX
Page 11 | April 2011
Hubbell Enclosures
780 West Granada Boulevard, Suite 300 • Ormond Beach, Florida 32174
Phone: 386.615.9510 • Fax: 386.615.9606 • hubbellenclosures@hubbell.com
NOTE: Because Hubbell has a policy of continuous product improvement, we reserve the right to change design and specifications without notice.
©Copyright 2011 Hubbell Incorporated
NEVER COMPROMISE™
Page 12 | April 2011
www.hubbellpowersystems.com
APRIL 2011
5M RGS 4/11
Catalog # HUC-4