Low-voltage switchgear and controlgear assemblies - Identification and Marking -Standards AS/NZS 61439

One of the significant shifts in upgrading from AS/NZS 3439 to the new AS/NZS 61439?standard was Identification and Marking.

(1) Identification and Marking:

• The new standard emphasizes clear identification of switchgear assemblies. Proper labelling ensures that users, installers, and maintenance personnel can easily understand the equipment.

• Key components should be labelled, including:

* Functional Units: Each functional unit (such as circuit breakers, contactors, etc.) should be clearly marked. Busbars: Busbars need proper labelling to indicate their function & phase.

* Terminals: Terminals should be labelled for easy identification during installation & maintenance. Accessories: Any accessories (like meters, relays, etc.) should also be labelled.

• Labels should be?durable,?legible, &?resistant to environmental conditions.

(2) Information on Labels:

• Labels must include essential information, such as:

* Rated Current: The current-carrying capacity of the assembly.

* Rated Voltage: The maximum voltage the assembly can handle.

* Short-Circuit Withstand Current: The assembly’s ability to withstand short-circuit currents.

* IP Rating: Ingress protection rating (e.g., IP54, IP65).

* Manufacturer Details: Name, address, & contact information of the manufacturer.

* Serial Number or Unique Identifier: Helps track the assembly.

* Installation Date: Useful for maintenance purposes.

* Operating Instructions: Clear instructions for safe operation.

* Warnings & Symbols: Hazard warnings & safety symbols.

* Certification Marks: Compliance with relevant standards.

• These labels aid in proper installation, maintenance, & troubleshooting.

(3) Colour Coding:

• AS/NZS 61439 introduces colour coding for different components:

* Functional Units: Each type of functional unit (e.g., circuit breaker, switch, etc.) has a specific colour. Busbars: Different phases can be color-coded.

* Terminals: Terminal blocks can have color-coded markings.

• Consistent colour coding enhances safety & simplifies identification.

(4) Placement of Labels:

? Labels should be?visible,?permanent, &?located near the relevant component.

• Ensure that labels are not obstructed during installation or maintenance. Remember, proper labelling is crucial for safety, compliance, & efficient operation of switchgear assemblies. Always follow the guidelines set forth by AS/NZS 61439 to ensure reliable electrical installations!

Disclaimer: Seek professional advice from qualified experts before making any decisions related to electrical matters. Electrical work is complex & hazardous, so it’s essential to consult with professionals who have the necessary expertise. Compliance with regulations is crucial. If you have specific questions or concerns, consider reaching out to licensed electricians or relevant authorities.

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