The Hidden Gem

In a marine power plant with three 600 kW generators, a 2% voltage difference doesn’t just disappear when connected it converts into physical heat within the alternators.

Since the generators are sharing the kW load equally but have different voltages, the energy loss (in kW) comes from Circulating Current between them.

The Hidden Kilowatt Loss: Even if your ship load is constant, the engines must burn extra fuel to overcome the resistance of this internal current.

Estimated Loss: For a 2% voltage spread on 600 kW units, expect a continuous loss of 3 kW to 6 kW per generator (total system loss).

Fuel Impact: This equates to roughly 2 to 5 liters of extra fuel per hour (500 liters month ) just to maintain the “fight” between the two or three alternators.

Scope of Services
AVR & Excitation Alignment
Governor (GOV) & Speed Control
PMS Health Check (Power Management System)
Full Function & Protection Testing

Marine AVR (Automatic Voltage Regulator) Models
Basler Electric: DECS-100, DECS-150, DECS-250 (Digital), and the analog AVC series.
Leroy Somer: R230, R250, R438, R448, and the digital D510C or D550.
Caterpillar Perkins: VR6, CDVR (Digital Voltage Regulator).
Mecc Alte: DER1, DSR, UVR6.
Stamford AvK: AS440, MX321, MX341, and the digital DM110.
ABB UNITROL: Unitrol 1005, 1010, 1020.
Marathon Electric: DVR2000E, DVR2400.

Marine Governor (GOV) Models
Woodward: Digital: 723R, 2301D, Peak 150, and the Protective Control 505.
Hydraulic Mechanical: UG-8, UG-25+, 3161, and EGB series actuators.
Heinzmann: E6, E16, E30 actuators with Priamos or Pandora digital controls.
Cummins: EFC (Electric Fuel Control) and GCS modules.
GAC (Governors America Corp): ESD5111, ESD5500E series.
Barber Colman Woodward: Dyna 8000, Dyna Plus.
Volvo Penta MTU: Integrated ECU/EDC units (MDEC/ADEC) that interface with the PMS via J1939 CANbus.

Integrated PMS Load Sharing Modules
DEIF: Multi-line 2 (ML-2), AGC-4, AGC 150.
ComAp: InteliGen NT, InteliSys GSC.
Selco: T2000, T2100 Load Sharing Units.
Deep Sea Electronics (DSE): 8610, 8660 series.