Sleipner HPC System — Installation Manual

What the HPC System Is

• The HPC system ties HPCG generators, battery banks and loads (bow and stern thrusters, optional stabilizers) into one power management framework, controlled over S-Link.
• Main modules: HPC-C (central control panel with busbars and fuses), HPC-S (switch module, one per channel, mounted close to the battery bank), HPC-G (DC PTO generator, port and starboard).
• Each delivered system is unique: the detailed specification and setup are in the delivery documentation that comes with it.
• The installation must have a way to disconnect the main battery outside the HPC, for example an easy-to-remove battery fuse and/or a separate disconnect switch.

Never run a thruster out of the water, and never rest a thruster motor on its drive shaft. DC motors produce some carbon dust and can exceed 100°C before the temperature switch trips: keep loose items and storage away from the motor.

HPC-C Connections

Basic connections (all setups)

Typical and optional connections

Signal connectors are push-in: a ferrule crimp tool is highly recommended. Secure wires inside the HPC-C with small tie wraps on the fastening points of the aluminium sheet.

First System Setup

Have the battery data at hand: total capacity (Ah), nominal voltage (V), chemistry (e.g. AGM), max. continuous discharge and charge C-rate, max. charge voltage and, for AGM and flooded lead, max. float voltage.

1. Open Config → Hybrid Power Central → Setup.
2. Check the displayed battery parameters match the installed hardware and press "Start".
3. The system self-checks its components; "Setup Complete" appears when no failure is found.
4. A failure is shown as a yellow dot on the part of the system concerned: troubleshoot and resolve it.
5. Press "Retest"; when OK, "Setup complete" appears.

Battery, charging (current, voltage, time) and thruster priority values are factory-set to the purchase order under Config → Hybrid Power Central → Settings. Change them only if the installation differs from the original order.

Generator Cooling Circuit

• HPC-C is passively air cooled; HPC-S and HPC-B have internal fans that start only when needed at high current.
• The HPC-G generators are liquid cooled by a closed coolant circuit with one or two circulation pumps and a heat exchanger, so seawater never enters the generator circuit. The HPC-C switches the seawater pump on and off through the external relay box.
• Coolant: ethylene glycol-based long-life engine coolant for aluminium/mixed-metal systems to ASTM D3306 (OAT or HOAT), typically pink. Mix 50/50 v/v with deionized/demineralized water, or approved premixed 50/50 (do not dilute). No tap or sea water; never mix coolant chemistries or brands.
• Mount the coolant reservoir at the highest point of the circuit (expansion tank ~1m above the highest point), the coolant circulation pump at the lowest point, and always use the lower generator port as inlet and the higher as outlet.
• Relay box: fused 24 VDC, 45A supply. Seawater pump and strainer below the water line (strainer and cock valve not supplied); 30 lpm sea water. Route sea water lines to rise continuously from intake to discharge so they self-purge.
• Fill through the expansion tank, run the circulation pump with the manual override and keep topping up until no more air bubbles appear; stop at once if anything leaks.

Cooling kit components

Hoses