Silvercrest Submarines are the UK's premier submarine & ROV sales company with contracts performed worldwide
Submarines 11.5Kw Thruster System::.
The Silvercrest Thruster is designed for tourist submarines, and remote operated vehicles (Rovs).
over the last 15 years electrical submarine thruster systems have been
problematic. Notably AC motor controllers & DC brush motor powered
thrusters have been the cause of many a company’s downfall. Other
problems such as 120VDC battery buss voltages have compounded the problem.
A not well-known fact is that all of these motor drive systems have a finite operating life; indeed they have a ‘shelf life’. This is due to the deterioration of the large capacitors used in the drive controllers. This occurs even when the drive is not in use. If a drive is more than five years old, then it’s capacitors are already approaching the end of their useful life. As a result, these drives are now becoming tired & prone to failure. Usually with accompanying pyrotechnics!
Silvercrest Submarines have developed a new ‘replacement’ propulsion system for both new build & existing submarines. We tailor the installation to solve your propulsion problem. We will visit you on-site to assess your installation & determine the best route forward to solve your problems.
Once the problems have been identified & assessed, where needed we re-design your battery buss arrangement to produce a working voltage suitable to run a reliable & powerful thruster system. Then we design the motors specifically to meet your requirements. The compensation system is added & the final stage of the design process is matching the correct drive with your new motors.
We have recently completed the installation of our 69kW
(6 x 11.5kW) AC propulsion and ballast system into one of the ‘Odyssey’
class Tourist Submarines. The system utilizes a state of the art, purpose
built 11.5kW thruster / ballast pump motor. A custom built submersible,
3 phase, AC, squirrel cage induction motor encased in a 316 Stainless
Steel compensated housing. The motor has been designed specifically to
match the available buss voltage & it’s dedicated motor invertor
controller. The Silvercrest motor is smooth, quiet & powerful. The
smoothest I have personally used in 20 years.
Protection from water ingress is provided by a twin Bergmann, tandem mechanical shaft seal arrangement on each motor shaft working in conjunction with a custom built, 33 Lt capacity, oil filled central motor compensation system.
Great attention has been applied to designing for reliability
and a long working life for the system. All components are rated to at
least 150% of required working capacity. This over rating of individual
components ensures that no single part of the system can ever be overloaded
during correct use.
Motors and drives of various ratings are available, utilizing many of the same frame parts. For example the 15kW motor utilizes the exact same parts as the 11.5kW unit, but with more motor laminations & therefore a slightly longer body. This reduces your spares requirement even when mixing & matching the motor sizes.
Military spec versions of the motors are also available.
Silvercrest Submarines offer a return to dealer, two-year warranty on all parts, subject to correct usage & standard terms & conditions.
Depth Rating 3000 Mts
Power Rating: 3kW -20kW
Poles 2,4,6 or 8
Voltage (Nominal) 340-480VAC
Max Amps 1A @ 0.25kW @ 340VAC
Max RPM 2600 / 2 pole @ 50Hz
Housing 316 Stainless Steel
Compensation Oil Filled – external compensator, ambient or over pressure.
Seals Twin, Tandem Mechanical Shaft Seals. ‘O’ Ring NDE
Weight 160kgs (11.5 kW) ***
Fixtures To Order
Warranty 2 Yrs – Extension negotiable
Rating 0.25kW – 37kW
Voltage 470-600VDC in
Current Up to 130A continuous
Protection Over current, Under volts, Thermal
Cooling Forced Air-conditioned air – water cooled
Warranty 2 Yrs
Type Expanded bellows
Rating 33Lts ambient to 100PSI max
Material Anodised Aluminium – 316 Stainless Steel optional
Ports 7 – Optional extras as required
Fill # 4 JIC thru ¼” turn valve
Bleed ¼” Taymar 20PSI relief valve
Fixtures 316 Stainless Steel
Main Switch Katko KVKE2xxx Switch Fuse
Current As required
Motor Switches Katko KVKE2xxx Switch Fuse
Current As Required