Testing and Checking of GMDSS Batteries Required by SOLAS.
- 1. Turn off the AC power from the GMDSS station by pressing the on/off button under GMDSS panel (or in the radio room). Switch off all other power ...
- 2. Press the PTT button to transmit on a non-distress and idle R/T frequency. Write down the on-Load voltage when the PTT is pressed.
- 3. Pay attention that the voltage drop shouldn’t exceed 1.5 volts.
- 2) The battery has deep discharge voltage. To avoid this, as per SOLAS, we need to measure the voltage of each cell during the test. The voltage mark ...
What are the tests/checks for GMDSS batteries?
Various tests / checks ensure that GMDSS batteries provide the required power. A daily test under load / no load ensures that all connections are not damaged and that when loaded, the batteries do not drop too quickly. The annual capacity test measures the battery capacity in amperes.
How often should the batteries of the GMDSS batteries be replaced?
Batteries must be recharged to the required minimum in less than 10 hours. The capacity of the batteries must be checked at interval of less than 12 months. Maintaining the GMDSS batteries in excellent condition is important to have them ready in emergency.
Where is the power button on a GMDSS?
The power button is usually under the GMDSS panel or on some ships in the radio room (if you still have one). If you have different AC source for charging the battery, that too need to be switched off.
What is on load/off load test in GMDSS?
On load / off load test is done to ensure that GMDSS equipments can have the power from battery. This ensures that all the connections from the battery to the GMDSS equipmemts are intact. Battery is able to provide power during operation of the GMDSS equipments.
How should you test the battery voltage on the vessel?
1:443:13How to Test your Boat Battery Voltage with a Multimeter! - YouTubeYouTubeStart of suggested clipEnd of suggested clip12.212. It's probably time to change your battery. So you're always looking for a 12.6 to a 12.8More12.212. It's probably time to change your battery. So you're always looking for a 12.6 to a 12.8 that's a healthy size that's a healthy a healthy battery.
What is the interval of checking the capacity of the battery when the ship is not at sea?
12 monthsa. CAPACITY TEST: The capacity of the battery or batteries shall be checked, using an appropriate method, at intervals not exceeding 12 months, when the ship is not at sea.
What is a battery capacity test?
In a nutshell, battery capacity is a measure of the energy it can store. When you test for capacity, you're looking at the battery's ability to deliver a specified amount of current at a constant rate to a specified end voltage for a specified time.
What is on load and off load in GMDSS?
Daily on load/off load test which ensures that all connections are intact and on loaded batteries do not drop voltage too quickly. 2. Yearly capacity test which measures the capacity of the battery in Ampere hours. The battery should be replaced if capacity is less than 80% of the rated capacity.
How do you test the GMDSS equipment?
This can be ensured by testing the GMDSS equipment at regular intervals....Weekly Tests On GMDSS EquipmentPress the [2/DSC] key at the DSC standby screen and then push the [ENTER] knob to open the CALL TYPE menu.Rotate the [ENTER] knob to choose TEST CALL and then push the [ENTER] knob.More items...•
How do you test MF and HF?
Printer test checks the connection between MF/HF equipment and printer. Go to Menu#2 -> READOUT & SET UP -> press 4 -> press ENT. This displays the “SELF TEST” screen. Select the “printer test” and press ENT.
How do you test a battery?
1:156:09How to Test a Car Battery with a Multimeter - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf this drops below 10 then we have a battery. Problem. You can see it dropped down and then itMoreIf this drops below 10 then we have a battery. Problem. You can see it dropped down and then it popped back up and now it's at 14.. That's because the alternator is charging the battery.
How do I use a multimeter to test a battery?
Connect the multimeter leads to the battery's terminals (red probe to the battery's positive terminal and black probe to the battery's negative terminal). Take the reading on the multimeter. If the reading shows a value greater than 7V for a 9V battery, the battery is still fit to use.
How do you test battery load capacity?
0:432:27Battery Load Test With a Multimeter - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf it's below 12 point 4 volts obviously the battery needs to be charged before this test isMoreIf it's below 12 point 4 volts obviously the battery needs to be charged before this test is performed. So. We can see that this battery is at 12 point 6 volts this is a hundred percent charged. So we
What are the 7 elements of GMDSS?
Its contents cover as follows:Distress Communication And False Alert.Operation Procedure For Use Of DSC Equipment.Search And Rescue Transponder.Extract From ITU Radio Regulations.VHF DSC List Of Coast Stations For Sea Area A1.MF DSC List Of Coast Stations For Sea Area A2.HF DSC List Of Coast Stations For Sea Area A3.More items...•
What are the four 4 sea areas of GMDSS?
The GMDSS operates over 4 sea areas of coverage from shore to ship. The 4 sea areas are classified as: A1, A2, A3 and A4. Sea area A1: Covered by VHF radio enabling Digital Selective Calling (DSC) and Radio Telephone (RT). Determined range of approximately 20-30 nautical miles.
What is a off load test?
An Offload test simply means running the generator without any load. Most importantly this action checks to ensure the generator successfully starts without affecting the business operations. Therefore, switching from mains to generator supply.
How do you check battery endurance on a ship?
With capacity test, we measure the capacity of battery by same method. We charge the battery to full and then measure it by discharging. To discharge the battery, we apply a known load to measure its capacity. Capacity of the battery is measured in Ampere hour (Ah).
What is the requirement for emergency and reserve power in GMDSS radio installations?
7-17C5: What is the requirement for emergency and reserve power in GMDSS radio installations? Compulsory ships must have emergency and reserve power sources for radio communications. An emergency power source for radio communications is not required if a vessel has proper reserve power (batteries).
What is GMDSS distress communication?
Global Maritime Distress and Safety System (GMDSS) is the internationally agreed-upon set of safety procedures, types of equipment and communication protocols used to increase safety and make it easier to rescue all distressed ships, boats and aircrafts.
What does GMDSS stand for?
Global Maritime Distress and Safety System (GMDSS) has been developed by the maritime nations in the International Maritime Organization (IMO) and is the result of their adoption of amendments made in 1988 to the 1974 International Convention on the Safety of Life at Sea (SOLAS).
What is GMDSS battery?
GMDSS batteries provide power to GMDSS equipments in case ship’s main as well as emergency power fail. The requirement of GMDSS batteries is governed by Regulation 13, Chapter 4 of SOLAS.
Why is it important to maintain GMDSS batteries?
GMDSS batteries are important equipment which ensures that emergency equipments gets power in real emergency. It is thus important to maintain these batteries in an excellent condition. Various tests/checks ensure that GMDSS batteries would provide the required power.
What voltage should a 24V battery be discharged?
If we discharge the battery below this voltage, the battery can loose its capacity to a level where it cannot be used again. For Nickel based batteries this voltage is 1.0V per cell. So for 24V battery pack (1.2V x 20 Cells), the deep discharge voltage will be 20V. While performing capacity test, we should never allow the battery voltage to go below 20V or 1V/Cell.
What is the power source flow of GMDSS?
However most of the time, GMDSS power source flow is AC power to batteries to GMDSS equipments. Switching off the AC power automatically ensures batteries are not on continuous charging during test. So after the GMDSS equipments are on battery power, note down the voltage of the batteries.
What does it mean when one battery cell is failing?
1) The one battery cell is failing. That is drop of voltage in one battery cell is different than others. In this case we need to isolate this failing cell and then continue the test.
How long does a laptop battery last?
It would be easier to understand the second statement with example of a laptop. A new computer with 100% battery might last for 8 hours . After few years same battery 100% charged would only last 4-5 hours. This is due to the ageing of the battery. With age, battery looses its storage space.
How long does it take for a battery to recharge?
Batteries must be recharged to the required minimum in less than 10 hours.
What is the reserve source of energy for a 24V battery?
The reserve source of energy is normally a 24V DC - lead acid battery which primarily caters to the communication equipment needs only. The AH capacity of this battery is normally in the range of 180 - 220 Ah (Ampere hour).
What factors affect battery efficiency?
The efficiency of the battery depends on many factors, viz: regular charging on/off load test etc.
Do all ships have an emergency generator?
As per SOLAS regulations it is mandatory for all vessels built after 1995 to have on board an emergency generator. Older ships might have an emergency generator or a battery bank as emergency source. When we speak of sources of energy it is as below:
What is GMDSS battery?
GMDSS batteries provide power to the GMDSS equipment in the event of a failure of the main and emergency power sources.
How important is a GMDSS battery?
GMDSS batteries are essential equipment that provides emergency equipment with energy in a real emergency. Therefore, it is important to keep these batteries in excellent condition. Various tests / checks ensure that GMDSS batteries provide the required power. A daily test under load / no load ensures that all connections are not damaged and that when loaded, the batteries do not drop too quickly. The annual capacity test measures the battery capacity in amperes. The battery must be replaced if the capacity is less than 80% of the nominal capacity. It is necessary to check the state of battery charge daily by measuring the specific gravity and electrolyte level.
What is a battery capable of?
The battery is capable of providing power during the operation of GMDSS equipment. That is, when the load transfers to the battery, it does not discharge too quickly.
Why is it important to keep GMDSS batteries in good condition?
Keeping GMDSS batteries in good condition is important to ensure that they are prepared for an emergency. Generally, GMDSS batteries carry out three types of tests / maintenance.
What does it mean when a battery cell is out of order?
One battery cell is out of order. That is, the voltage drop in one battery cell is different from the others. In this case, isolate this faulty cell and then continue testing.
What to do if electrolyte level is low?
If the level is low, the battery cell should only be filled with distilled water. Checking the specific gravity of the electrolyte
How many volts should a battery drop?
3. The voltage drop should not be more than 1.5 volts. 2. Performance Test All batteries have a lifespan. Battery capacity may decrease with age. And with a performance test, we measure this capacity
