11/29/2023 0 Comments Marine battery isolator acrAfter extended use of the bow thruster the thruster battery voltage will decline, and the thruster power will drop.There are situations where it is useful to manually combine banks and to exit automatic mode: When switched to “OFF” the lower LED will light indicating the banks are disconnected. When the remote switch is set to “ON” the upper LED will light indicating that banks are combined. In addition to setting automatic operation, battery banks can be combined or isolated as desired using the ACR remote switch. Using the Remote Switch to Combine / Disconnect Banks After this period of time has passed it will either open (which will isolate the battery banks) or close (which will combine the battery banks). When setting an ACR to automatic operation it may flash for a period of time (~10-90 seconds) while it analyzes voltage levels and searches for charging current. In this scenario the engine start battery and generator start battery would be unaffected and could be used to start the engine or generator, which in turn could be used to recharge the house bank.Īn ACR is set to automatic operation by positioning the remote switch at the power panel to the middle position. This feature means that a heavy load inadvertently left on, such as an electric coffee maker running on the inverter will only discharge the house bank but not the engine start battery, bow-thruster/windlass battery, and generator battery. In automatic mode ACRs also automatically isolate battery banks when charging has stopped and battery voltage begins to fall. This ensures that all battery banks receive the benefit of a charging current. The charging source could be shore-power, the alternator, generator, solar, etc. In automaticmode, the ACR will link the boat’s battery banks when a charging current is present. Graphic courtesy ĪCRs are most commonly used in automaticmode. When used properly, ACRs eliminate the concern of inadvertently draining the engine start, bow thruster, or generator start batteries by leaving on a coffee maker or other electric device while at anchor.įigure 1. Current Helmsman Trawlers are equipped with Blue Sea Automatic Charging Relays (ACRs) to link battery banks. This process was easy to forget, and could lead to the inadvertent discharge of the engine start battery – bad news when it was time to start the engine. In the past, managing the charging and isolation of these battery banks was a manual process involving rotary-style battery switches or manually-activated jumper relays to combine and isolate the batteries. They combine banks when a charging current is present so that all batteries benefit from the charging source, and isolate the different battery banks when voltage levels on any bank drops below a certain threshold to ensure that a load on one bank doesn’t drain all the banks. Automatic Charging Relays, installed on Helmsman Trawlers since 2012, are devices which automatically combine for charging, or isolate for protection, these different battery banks without any thought by the boat operator. Helmsman Trawlers are equipped with multiple banks of batteries: a house bank, an engine start battery, a bow-thruster/windlass battery, and a generator start battery (if a generator is installed). This article will describe the cause of the clack, better known as an Automatic Charging Relay, and detail the operation of ACRs and their counterpart, the Remote Battery Switch. Owners of Helmsman Trawlers have heard clacks emanating from the engine room after they’ve shut down their engine and plugged into shore power, and some have asked about the cause. On Orders over $800 pays the charges - You will not be charged anything for duties or customs brokerage fees.Automatic Charging Relays & Remote Battery Switches Orders under $800 do not receive any customs charges by US Customs. Do I have to pay any customs charges or duties?Ī. We are located in Canada and we are not required to charge US state sales taxes. To see what your shipping charge (if any) will be you can add the item(s) and quantities to the shopping cart and you will see a shipping cost calculator.Ī. If my order does not qualify for free shipping what will it cost?Ī. Northeast will be 3 - 4 days and Southwest and Pacific coast will be 7 business days. Delivery time will be 3 - 7 business days. Where do you ship from and What is the delivery time?Ī. Over 98% of the items on qualify for the free shipping offer. Exempt items are usually bulky or heavy items such as buoys. Some items are exempt from this offer and are indicated on the product page. We have Free ground shipping via UPS to the Lower 48 States on most orders of $99 or more.Ī.
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