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Partial Discharge - Hydro Group
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Defense - Underwater Cable & Connector
Product Description

Partial Discharge - what is it?

Partial discharge is the name given to an electrical phenomenon which consists in the breakdown of an electrical insulation under high voltage levels.

The partial discharge process can be very hazardous to electrical components such as connectors, penetrators & other high voltage equipment in a sub-sea or surface environment.

Partial discharge or ‘corona effect’ usually occurs in small cavities, airspace, bubbles in epoxy resins, or other dielectrics. Partial discharge can take place randomly and unexpectedly, and regular discharge will ultimately lead to component failure which in turn equates to complete equipment failure.

The key to preventing any possible problem is early detection, when connectors or penetrators are manufactured during the many processes prior to final testing. The design of the various dielectrics & components is also crucial to deliver a partial discharge free product.

Partial discharge measurement can be done in a number of ways, however when constructing high voltage connectors experience shows that poor termination & jointing is a major cause of failure of cables to connectors. This is due to the fact that, in contrast to the cable, the terminations have a more complex structure with several dielectrics, and expanding field gradients. Partial discharge radiates electromagnetic pulses and can be detected acoustically usually within a bandwidth of 250-5000Mhz.
    
 
 
 

Product List
Defense - Underwater Cable & Connector
Underwater Cable & Connector
Water Tight Bulkhead glands optical
Water Tight Bulkhead glands optical
 
Cable Splicing Kits - Hydro Group
Cable Splicing Kits - Hydro Group
 
Composite Cables - Hydro Group
Composite Cables - Hydro Group
 
Aerostat Cables
Aerostat Cables
 
Cathodic Protection Cables
Cathodic Protection Cables
 
Coax Cable & Connectors
Coax Cable & Connectors
 
Diver Comms Cables - Hydro Group
Diver Comms Cables - Hydro Group
 
Dynamic Flow Line Control Cable - Hydro Group
Dynamic Flow Line Control Cable - Hydro Group
 
Diver Video Cables - Hydro Group
Diver Video Cables - Hydro Group
 
Main Lift Tether Cables - Hydro Group
Main Lift Tether Cables - Hydro Group
 
Fibre Optic Cables - Hydro Group
Fibre Optic Cables - Hydro Group
 
Neutrally Buoyant Tether Cables - Hydro Group
Neutrally Buoyant Tether Cables - Hydro Group
 
HXD (Hydrobond EExd / EExde) - Hydro Group
HXD (Hydrobond EExd / EExde) - Hydro Group
 
HYB & HRS - Hydro Group
HYB & HRS - Hydro Group
 
Fibre Link Deep Field Penetrator - Hydro Group
Fibre Link Deep Field Penetrator - Hydro Group
 
HCC connectors
HCC connectors
 
HDM (Hydrobond Deck Mate) - Hydro Group
HDM (Hydrobond Deck Mate) - Hydro Group
 
HMK Connector - Hydro Group
HMK Connector - Hydro Group
 
HMC Mini Connector (Electrical / Fibre Optic)
HMC Mini Connector (Electrical / Fibre Optic)
 
HRS Electrical Connectors - Hydro Group
HRS Electrical Connectors - Hydro Group
 
HRC Hydro Renewables Connector
HRC Hydro Renewables Connector
 
MacArtney - MacAPI Power and Signal Connectors
MacArtney - MacAPI Power and Signal Connectors
 
MacArtney - OptiLink Fibre Penetrator
MacArtney - OptiLink Fibre Penetrator
 
Field Installable Termination
Field Installable Termination
 
Optical Penetrators - Hydro Group
Optical Penetrators - Hydro Group
 
HPS Electrical Penetrators - Hydro Group
HPS Electrical Penetrators - Hydro Group
 
Kellems Pulling and Cable Support Grips
Kellems Pulling and Cable Support Grips
 
Strain Terminations - Hydro Group
Strain Terminations - Hydro Group
 
Partial Discharge - Hydro Group
Partial Discharge - Hydro Group
 
Breakout Moulds - Hydro Group
Breakout Moulds - Hydro Group
 
C200 Encapsulation Polyurethane
C200 Encapsulation Polyurethane
 
Cathodic Delamination Protection
Cathodic Delamination Protection
 
Custom Design Polyurethane Moulding
Custom Design Polyurethane Moulding
 
Electrical Testing Services - Hydro Group
Electrical Testing Services - Hydro Group
 
Field Service - Hydro Group
Field Service - Hydro Group
 
Engineering Services -Hydro Group
Engineering Services -Hydro Group
 
Optical Testing Services - Hydro Group
Optical Testing Services - Hydro Group
 
Polyethylene Moulding
Polyethylene Moulding
 
Environmental Electrical Connectors - Hydro Group
Environmental Electrical Connectors - Hydro Group
 
MacArtney - Mac API Fibre Optic Connector
MacArtney - Mac API Fibre Optic Connector
 
MacArtney - OptoLink Single Fibre Connector
MacArtney - OptoLink Single Fibre Connector
 
MacArtney - Optolink Fibre Optic Connector
MacArtney - Optolink Fibre Optic Connector
 
Pressure Hull Gland - Hydro Group
Pressure Hull Gland - Hydro Group
 
Observation System
Microspheres - Multibeam Imaging Sonar
Microspheres - Multibeam Imaging Sonar
Gemini 720is
Microspheres - Correlation Velocity Log (CVL)-Tritech
Microspheres - Correlation Velocity Log (CVL)-Tritech
 
Microspheres - Tritech-Eclipse
Microspheres - Tritech-Eclipse
 
Microspheres - Link-Quest
Microspheres - Link-Quest
TrackLink 5000LC, TrackLink 5000MA, TrackLink 5000HA
Microspheres - Tritech (4000m)
Microspheres - Tritech (4000m)
Gemini 620pd
Physical Oceanographic - Tritech-Heavy Duty Hydraulic Pan & Tilt Unit
Physical Oceanographic - Tritech-Heavy Duty Hydraulic Pan & Tilt Unit
 
Microspheres - Tritech
Microspheres - Tritech
StarFish 452F
Physical Oceanographic - ACABS-2
Physical Oceanographic - ACABS-2
 
Physical Oceanographic - LinkQuest
Physical Oceanographic - LinkQuest
FIowScout 600/2000
Physical Oceanographic - LinkQuest
Physical Oceanographic - LinkQuest
FlowQuest 2000
Physical Oceanographic - Hydraulic Pan & Tilt Unit-Tritech
Physical Oceanographic - Hydraulic Pan & Tilt Unit-Tritech
PT3636-HD
Geological Oceanographic - Echo Sounder-Knudsen
Geological Oceanographic - Echo Sounder-Knudsen
Sounder 1600
Geological Oceanographic - Echo Sounder-Knudsen
Geological Oceanographic - Echo Sounder-Knudsen
Sounder 1610
Geological Oceanographic - Echo Sounder-Knudsen
Geological Oceanographic - Echo Sounder-Knudsen
Chirp 3200
Geological Oceanographic - Echo Sounder-Knudsen
Geological Oceanographic - Echo Sounder-Knudsen
Chirp 3260
Geological Oceanographic - Echo Sounder-Knudsen
Geological Oceanographic - Echo Sounder-Knudsen
320M
Meteorological Monitoring - FT TECH
Meteorological Monitoring - FT TECH
FT742-DM
Geological Oceanographic - Echo Sounder-Knudsen
Geological Oceanographic - Echo Sounder-Knudsen
320MP
Meteorological Monitoring - FT TECH
Meteorological Monitoring - FT TECH
FT702LT
Underwater Camera - Super SeaSpy-Tritech
Underwater Camera - Super SeaSpy-Tritech
 
Meteorological Monitoring - FT TECH
Meteorological Monitoring - FT TECH
FT702LM
Color Zoom Camera (Typhoon)-Tritech
Color Zoom Camera (Typhoon)-Tritech
 
Underwater Camera - Hydro-Cam-Hydro Group
Underwater Camera - Hydro-Cam-Hydro Group
 
Low Light Monochrome Camera (Tornado)-Tritech
Low Light Monochrome Camera (Tornado)-Tritech
 
Underwater Camera - Hydro-Lite 400-Hydro Group
Underwater Camera - Hydro-Lite 400-Hydro Group
 
Tritech- Micron INS
Tritech- Micron INS
 
Hydraulic Power Unit
Hydraulic Power Unit
 
Hydraulic Linear Winches
Hydraulic Linear Winches
 
Special Hydraulic Jacks
Special Hydraulic Jacks
 
Mooring Sheathed Cable Laying Grippers
Mooring Sheathed Cable Laying Grippers
 
Winches
Winches
 
Microspheres - Tritehc
Microspheres - Tritehc
Gemini 720i
Geological Oceanographic - Echo Sounder-Knudsen
Geological Oceanographic - Echo Sounder-Knudsen
Sounder 1620
Microspheres - Tritech
Microspheres - Tritech
StarFish 990F
Monitoring System
Energy Sector
Defense - Harbors Defense