Submarine Manufacturing & Products Limited

Hydraulic Power Unit (HPU)

This hydraulic powerpack is fitted with 316 Stainless Steel divided twin hydraulic oil reservoirs each of 200 Liter capacity, complete with return filter, sight glass, filler breather, and inspection / cleaning hatch in each tank section. The hydraulic power unit is provided with two Variable Displacement hydraulic Pumps and dual frequency electric motors on Anti Vibration Mounts, which gives in-built 100% redundancy for primary and secondary operational requirements in the event of failure.

The HPU is equipped with a single Stack Valve Assembly With single operating Handle To Change Over from the primary pump system To The secondary Standby pump System .

The HPU hydraulic fluid is seawater cooled and is fitted with 2 x individual Shell and Tube Type. Seawater Heat Exchangers, one for each tank section of the oil reservoir.

Hydraulic Pipe work and Fittings will be in 316 Stainless Steel where possible.

3 x suitably rated hydraulic hoses CW QC’S are provided for Interconnecting between the HPU and the “A” Frame proportional control valve manifold.

The HPU Electrical Dual Star Delta Starter Box is provided within a 316  Stainless Steel Cabinet, Suitable for a  Marine deck environment, mounted and wired within the HPU crash frame power unit, and assembled with Marine Specification Cable. The box will include a Primary duty and secondary standby switch with start stop, pump running lamps for each pump.

The panel is also be outfitted with the following additional items:

2 x Emergency Stop Button

2 x Manual Override button For Limit Switch.

2 x Integration contacts For Diver Basket Limit Switch (Terminals/Contacts CW Built in Cut off Relays inside Electrical Box)

1 x 60 Amp 440 Volt 3 Phase Plug for connection to the vessel power supply system CW 5 Meter Electrical Cable.