Subelement E: Power Sources— Topic :
Question 38E3
Element 9 (GMDSS Maintainer)What would be an indication of a malfunction on a GMDSS station with a 24 VDC battery system?
Explanation
A 24 VDC battery system is designed to operate within a specific voltage range, typically between 24 and approximately 28.8 volts when fully charged or undergoing various stages of charging (e.g., float, bulk, absorption). A constant reading of 30 volts on the GMDSS console voltmeter indicates that the battery charger is supplying excessive voltage. This condition, known as overcharging, can severely damage the batteries, reduce their lifespan, and potentially harm other connected equipment. It is a clear and immediate indication of a battery charger malfunction, specifically a faulty voltage regulator.
Options C and D are less accurate or describe normal behavior. A high rate of charge (D) after testing on battery power is normal, as the charger works to replenish the drained battery (bulk charge phase). The sentence for C is incomplete, but if it implied a brief 30V, a *constant* 30V (B) is a more definitive malfunction.
Related Questions
38E1 How often should high charging be use with a standard lead acid battery and a fully automatic GMDSS compliant Battery charger?38E2 What are the different modes of charging for a GMDSS compliant battery charger/supply?38E4 What is the meaning of “Reserve Source of Energy”?38E5 With a fully automatic GMDSS compliant battery charger / power supply, when must the high charging process be interrupted?38E6 A fully automatic GMDSS compliant Battery charger/ Power supply’s high (Full) charging mode must be disabled during setup for what type batteries?