Submersible Grounding Boxes

Submersible1Three phase direct grounding boxes with disconnecting links are used in conjunction with terminations and splices to ground the cable sheath.

Three phase grounding boxes with surge arrestor protection are used in conjunction with terminations and splices to protect the cable sheath from transient voltage build-up and from over-voltages arising from lightning strikes or switching surges.

Three phase cross-bonding boxes with surge arrestor protection are used to minimize sheath loses and to protect the cable sheath from over-voltages arising from lightning strikes or switching surges.

Specialty four phase grounding boxes are available for integrating a spare fourth phase. This is convenient in the event of a failure in one of the existing primary phases since it would be already connected into the existing system bonding scheme.Groundbox2

The boxes provide an easily accessible shield break location that can be used for system testing purposes. The boxes are suitable for outdoor and underground environments. They can be direct buried or mounted vertically or horizontally, in a pit, vault, manhole or on a support structure. The cover incorporates a seamless foam-in-place gasket and a window to facilitate visual internal component inspections without removing the cover. The cable entrances are sealed with rubber grommet compression glands and heat-shrink sleeves.
 
 
Material:
Type 304 Stainless Steel
Download Product Sheet:

sumergible

 

 

 

 

 

 

 

 

Fabrication: 
Continuously welded seams and ground smooth
Bolt-on cover with lifting handles
Bonding Leads:
Suitable for 4/0 to 500 kcmil insulated single conductor cables
Surge Arresters:
(standard)
3.0 kV, 3.6 kV, 4.8 kV and 6.0 kV
Other voltage sizes available upon request
Weight: 
90 lb (41 kg) approx
Dimensions:
21” (534mm) x 21-1/2” (575”) x 13-5/8” (346mm)
Electrical:
25 kV DC withstand for 1 minute without arresters
15 kV AC withstand for 5 minutes at 60 Hz
47.5 kV BIL
Mechanical:
NEMA Type 6P rated enclosure (submersible)
IEC 529 Protection Class IP68 (7 m depth)
Arrestors:
Nominal discharge current (8/20μs) = 10 kA peak
Impulse withstand current (4/10μs) = 100 kA peak
Long duration current impulse (2000μs) = 250 A

 

For more information please contact us.