Beatrice Lang
In the context of electrical engineering, ACL is a term with multiple meanings. In electronics, ACL can refer to AC Line, indicating a hot wire that carries an electric current, typically represented by the colour brown in European standard colour coding. This is distinct from ACN, which stands for AC Neutral, represented by the colour blue. Additionally, in certain sectors, ACL can stand for Across the Line, referring to full-voltage non-reversing (FVNR) motor starters, although the acronyms ATL and DOL are more commonly used for this purpose.
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What You'll Learn
ACL in electrical wiring
In electrical wiring, ACL is a term used to refer to AC Line, which is the "hot" wire that carries a live current. It is typically represented by the colour brown and is sometimes also referred to as the "hot lead".
The ACL wire is an essential component in electrical wiring, as it is responsible for carrying the live current from the power source to the connected devices. It is important to note that the ACL wire is different from the ACN (AC Neutral) wire, which is usually coloured blue and serves as the neutral wire.
In the context of soldering, it is crucial to distinguish between the ACL and ACN wires. The ACN wire should be connected to the wider blade or prong, while the ACL wire should be connected to the narrower blade. This ensures that the current flows correctly and safely through the circuit.
In addition to electrical wiring, ACL is also used in other contexts, such as motor starters and power distribution boards. In motor starters, ACL stands for "Across-the-Line" and refers to a type of starter where the motor is directly connected to the supply lines, allowing full voltage when the motor starts. ACL power distribution boards are designed to facilitate a consistent flow of power to connected modules, ensuring optimal performance.
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ACL in motors and generators
In the context of electrical engineering, ACL is most commonly understood to stand for "AC Line" or "Across the Line". The former refers to the hot wire in a power connection, which is usually brown in European standard colouring. The latter refers to a type of motor starter, where the motor is directly connected to the supply lines, allowing full voltage when the motor starts.
In motors and generators, the term ACL is used to refer to "across-the-line" motor starters. These are also known as full voltage non-reversing (FVNR) starters, which is a term used specifically in the NEMA world. Outside of this context, the equivalent term is "direct on line" (DOL) starters.
The ACL or "across-the-line" starter is a method of starting a motor or generator by directly connecting it to the supply lines, allowing full voltage when the motor starts. This is in contrast to other types of starters, such as reduced voltage solid state or softstart (RVSS) starters, which provide a reduced voltage to the motor during start-up.
The use of the acronym ACL for across-the-line motor starters is seen in some sectors of the water and wastewater industry, as well as in some IEEE articles and technical articles. However, it is not the most common acronym for this type of starter, with DOL being the most commonly used acronym worldwide. ATL is also used, mostly in North America, by some motor starter manufacturers and in the end-user sector.
In the context of soldering ACN/ACL wires to an outlet plug, the ACL wire is the hot wire and should be connected to the narrower blade/prong, while the ACN wire is the neutral wire and should be connected to the wider blade/prong.
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ACL in power distribution
In electrical engineering, ACL is used to refer to AC Line, which is the "hot wire" or "hot lead" and is usually brown in colour. This is distinct from ACN, which stands for AC Neutral, and is usually blue.
ACL also has other meanings in the electrical field, including Across-the-Line, which refers to a type of motor starter.
Now, onto the topic of ACL in power distribution. Power distribution involves the delivery of electricity from its source to consumers. This process includes transmission, distribution, and delivery to end users.
In the context of power distribution, ACL, or Access Control List, is a crucial aspect of network security. It is a list of rules that specifies which users or systems are granted or denied access to a particular object or system resource. ACLs are used to manage network access by providing instructions to network switches and routers, specifying the types of traffic that are allowed to interface with the network.
For example, in a power distribution board, LED power indicators and the possibility to use one or two Gates and CVs make this distribution system easy to integrate into different modular environments. Here, ACLs can help ensure that only approved users and traffic have access to the system, improving network efficiency and security.
In summary, ACL in power distribution involves using Access Control Lists to manage network access and improve security and efficiency. It is an essential aspect of controlling access to network resources and protecting sensitive information.
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ACL in soldering
ACL stands for AC Line and is a brown wire that is used for the hot lead. It is often soldered with the ACN (AC Neutral) blue wire.
In soldering, ACL refers to the live wire. The solder fuse and CBB capacitor (resistor-capacitor circuit) of PCBA components must be on the live wire (ACL). ACL1 must be connected to the live wire, and HI or LO must be connected to one end of the heating body each, and the common terminal of the heating body must be connected to the neutral wire.
The solder joints of PCBA components must not have virtual soldering, continuous soldering, or desoldering. The solder joints should be clean, uniform, and free of bubbles, pinholes, etc. The PCBA inspection process typically involves a combination of automated and manual checks. The first step of the process is a visual inspection, which includes examining the PCB for any physical defects such as cracks, scratches, or damage to the solder mask layers. This is usually manually performed by trained inspectors using magnifying glasses or microscopes.
The next step is Automated Optical Inspection (AOI), which uses cameras and software to detect defects such as missing or misaligned components and soldering defects. AOI is a fast and accurate inspection method capable of detecting defects that may be challenging for humans to identify. Following AOI, the circuit board may undergo X-ray inspection, which is used to detect defects in hidden areas such as solder joints beneath surface-mounted components. X-ray inspection is particularly useful for identifying voids in solder joints, which may be hard to detect using other methods.
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ACL in IEEE articles
The Institute of Electrical and Electronics Engineers (IEEE) is a professional organization that supports many branches of engineering, computer science, and information technology. IEEE publishes technical articles, journals, magazines, and conference proceedings, and also sets standards for various industries.
In the context of electrical engineering, ACL is commonly used to refer to AC Line or AC Neutral, which is the "hot" wire in a power connection. This is typically represented by a brown wire and is often used in 12V AC to DC power converters.
In IEEE articles, ACL specifically refers to "Across-the-Line" and is used in some sectors of the water and wastewater industry. The abbreviation ACL is used to refer to full-voltage (across-the-line) motor starters, which are devices that allow a motor to be directly connected to the supply lines, providing full voltage when the motor starts.
IEEE has strict guidelines for submitting articles to their publications. Articles must be original and enhance the existing body of knowledge in the given subject area. Proper grammar and correct citations are required, and submissions are scanned for plagiarism. Authors are expected to disclose any prior publications or similar work and must obtain permission for reusing copyrighted material.
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