Battery isolation is the process of separating one battery or power source from another to prevent unwanted current flow. This is important in systems that use multiple batteries or power sources, such as boats, RVs, and off-grid homes.
A battery isolator splits direct current (DC) and divides it into multiple branches, allowing current to proceed in a single direction exclusively in each branch. It provides a simultaneous charge to multiple batteries from one power source, such as an alternator, without requiring connection of the battery terminals in parallel.
Isolation fault is dangerous to the staff of the battery system, and multiple distributed isolation faults with different potentials will cause short circuit hazard. Therefore, many applications specify that the operation of reducing the isolation resistance is prohibited, or the user must be warned at the same time.
There are several different types of battery isolation methods, each with its own advantages and disadvantages. Some of the most common methods include: Diode Isolation – Diodes can be used to prevent current flow between batteries. When a diode is placed in series with a battery, it allows current to flow in one direction only.
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