3.2 Electrical Equipment Power Connections

AC Input Power Source Requirements

1. Either of two AC input voltages are acceptable:
   
   1. 110 – 120 VAC (nominal) (+/- 10%), 1 Phase, 50/60 Hz, 30 A
   2. 208 – 230 VAC (nominal) (+/- 10%), 1 Phase, 50/60 Hz, 30 A
2. A separate circuit breaker should be used for each Seakeeper drive in multiple Seakeeper installations.

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Spool-Up Power Modes

The Seakeeper 7.5 is factory-configured for Default Spool mode, which accelerates the flywheel to operating speed (9700 RPM) in 24 minutes. This mode requires a higher AC power draw during startup (4000 W) but reduces the overall startup duration. For vessels with limited generator capacity or where minimizing peak electrical load is preferred, an optional Low-Power Spool mode can be selected on the display’s Settings page. This mode reduces the startup power demand to only 2300 W, which increases the time required for the flywheel to reach operating speed. Select the spool mode appropriate for the vessel’s electrical system to ensure reliable operation without overloading the AC power source.

Drive Box AC Power Input Connection Instructions

1. Cable: 3 x 10 AWG (3 x 6mm² CSA), 10 ft (3 m) length, Seakeeper supplied pre-installed.
   
   1. Locate AC Power Input Cable to the Drive at the outward of two cable glands per Figure 17.
   2. Connect AC wires to a 230 V, 30 A (or 110 V, 30 A), double-pole Circuit Breaker at an AC power distribution panel.
      
      

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12 V Power Input

1. One 12 VDC, 10 A (Customer supplied) for Seakeeper Control Power, AND
2. One 12 VDC, 15 A (Customer supplied) for the DC Seawater Pump.
3. A dedicated breaker should be used for Seakeeper control and Seawater Pump power for each Seakeeper unit.

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Seakeeper DC Control Power Connection Instructions

1. 12 VDC, 10 A, 2 x 12 AWG (3 x 4 mm² CSA) customer supplied.
   
   1. Install Seakeeper provided DC Power Input Cable, P/N 20248 (shown in Drawing No.90951):
      
      1. Route DC Power Input Cable to DC Power Distribution Panel.
      2. Terminate positive (B+, Red) conductor through dedicated over-current protection device (customer supplied) and a dedicated Seakeeper isolation switch (customer supplied) then directly to battery plus terminal.
      3. Terminate negative (B-, Black) conductor directly to battery negative terminal or negative bus.
   2. Before connecting DC Power Input Cable to Seakeeper, check for proper voltage and polarity with a DC multimeter using Figure 19.
   3. Connect DC Power Input Cable to 12 VDC input receptacle on Seakeeper.

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DC Seawater Pump 12 VDC Power Input Connection Instructions

1. Install DC SW Pump Input Power Cable (P/N: 20454) to Seakeeper 7.5 “SW Pump DC In” (shown in Drawing No. 90951) with overcurrent protection corresponding to seawater pump selected.
2. Connect the 14 AWG positive conductor (red) through dedicated overcurrent protection device (customer-supplied), maximum of 15 A, to dedicated battery isolation switch.
3. Connect the 14 AWG negative conductor (black) directly to battery negative terminal or DC main negative bus bar.
4. Before connecting DC SW Pump Input Power Cable to Seakeeper, check for proper voltage and polarity with a DC multimeter using Figure 20.

5. Connect DC SW Pump Power Input Cable to Seawater Pump 12 VDC In connector on the Seakeeper, DEUTSCH DT04-2P connector.

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DC Seawater Pump 12 VDC Power Output Connection Instructions

1. Connect DC SW Pump Power Output Cable (P/N 20455) to the Seakeeper 7.5 wire harness connector “SW Pump 12VDC Out” female connector for DC power output to the seawater pump.
   
   1. Seawater Pump Output Power Cable is a 2 x 14 AWG cable, 16 ft (5 m) length, with a size 14 female Deutsch plug.
2. Pumps rated at 12 VDC, 15 A maximum, customer-supplied, must be configured with a Deutsch DTP series, 2-pin receptacle to mate with the connector shown in Figure 21.

3. The DC SW Pump Power Output Cable must be routed and installed in the vessel from the Seakeeper 7.5 “SW Pump 12VDC Out” Deutsch connector (pins end) to the customer-supplied seawater pump per Figure 22.