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Articles - Automatic Charging Relays


ACR Operation

Legend ACR OPEN - Batteries are Isolated ACR COMBINED - Batteries are connected and both charging. ACR relay is open and batteries are ...
October 12, 2011

ML-Series Heavy Duty ACR Supports High Amp Charging and Emergency Cross Connect

The ML-Series Automatic Charging Relay (ACR) is engineered for high current applications. When connected through a 4/0 cable, it is rated at...
March 16, 2008

Selecting the Appropriate Fuse Rating When Installing the 120A SI ACR

When installing Blue Sea Systems 120A SI ACR, PN 7610, use this chart to select the appropriate wire size and fuse rating. ...
August 17, 2007

SI ACR Performance during Charger Float Mode

The primary function of an automatic charging relay (ACR) is to combine battery banks so that they can share the output of a single charger....
January 19, 2007

The 120 Amp SI ACR Handles ”Noisy” Charger Output

The primary function of an automatic charging relay (ACR) is to combine battery banks so that they can share the output of a single charger....
January 19, 2007

Overcoming Dropout of House Electronics during Engine Starting

Automatic Charging Relays (ACRs) combine and isolate batteries (or battery banks) in response to changes in voltage. When a charge from a c...
November 13, 2006

Start Lockout for Two Engines

See Application Brief: Overcoming Dropout of House Electronics during Engine Starting for a brief explanation of Automatic Charging Relays (...
November 13, 2006

Blue Sea Systems' CL-Series BatteryLink™ ACR

When combined with the Dual Circuit™Battery Switch, the CL-Series BatteryLink™ ACR fully automates the charging of two batteries. B...
June 23, 2006

Automatic Charging Relay - An Alternative to Multiple Output Charging Systems

What do you do when the number of battery banks on your boat is greater than the number of charging outputs from your system′s battery...
June 23, 2006

Charge Current Limiting for a Remote Battery Using the CL-Series BatteryLink™ ACR

Powering a bow thruster or windlass from the main battery banks requires running large wires through the entire length of the boat since cab...
May 23, 2006

Load Shedding Using the CL-Series BatteryLink™ ACR

Non-essential loads, such as entertainment equipment and refrigeration, can draw large amounts of power from a boat's battery banks. This ca...
May 23, 2006

Pilot House Navigation Battery Isolation Using the CL-Series BatteryLink™ ACR

The Coast Guard has found that vessels may lose communications if there is flooding of the engine room. With the engine room flooded, chargi...
May 23, 2006

Battery Isolators and Automatic Charging Relays

Battery Isolators, Automatic Charging Relays (also called ACRs , combiners, or voltage sensitive relays) are all intended to keep a load (or...
October 18, 2004
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