Euro Manufacturing and Marketing Ltd  UK Manufacturers of  Battery Management Systems,  DC-DC Voltage Converters and DC-DC Battery Chargers

TEST PROCEDURE


Due to the technology involved Galvanic Isolators are a bit difficult to test. New standards are being developed that will specify self testing isolators, but there are some technical difficulties that remain to be overcome and in the meantime they have to be tested by hand. There are a number of methods that can be employed, but the one that follows is the simplest and easiest:-


UNPLUG THE BOAT FROM SHORE POWER BEFORE STARTING THE TEST

1. Disconnect lead from one of the Terminals on the Galvanic Isolator so that you are testing it only.

2. Take a Digital Multimeter and set to the Diode test function

3. Put one lead from the Multimeter on one Terminal of the Galvanic Isolator and the other lead on the other Terminal

4. As the Capacitor in the Galvanic Isolator starts to conduct current, the reading on the Multimeter should rise to approximately 0.9Volts*

5. Remove the test leads from the Galvanic Isolator and short the two terminals of the Galvanic Isolator together to discharge the Capacitor

6. Repeat the test – this time with the test leads reversed. You should get the same result*


If you get the above results then the Galvanic Isolator is working OK and can be safely reconnected.

We recommend this test should be carried out once every six months.


*Charging of the Capacitor can take a little time depending on the Multimeter being used.


Interpreting the Readings


E936 Galvanic Isolator

E936 GALVANIC ISOLATOR


Specification