What are the main considerations for designing a custom engineered panel according to IEC 61439?

The main considerations include ensuring the panel's design meets the operational and environmental requirements, verifying the rated current and short-circuit withstand strength, and complying with the temperature rise criteria as per IEC 61439-1 and 61439-2 standards.

How is the verification process for custom engineered panels conducted under IEC 61439?

Verification for custom engineered panels involves design verification and routine verification. Design verification can be achieved through testing, calculation, or application of design rules, as specified in IEC 61439-1 Clause 10.

What role does the assembly manufacturer play in the custom engineered panel process under IEC 61439?

The assembly manufacturer is responsible for ensuring the panel's design complies with IEC 61439 requirements, performing verifications, and providing documentation such as the declaration of conformity and technical data as outlined in IEC 61439-1 Clause 11.

How does IEC 61439 define the requirements for the enclosure of a custom engineered panel?

IEC 61439 requires that the enclosure provides adequate protection against external influences, appropriate IP rating for environmental conditions, and mechanical impact strength, in accordance with IEC 61439-1 Clause 8.

What documentation is necessary for compliance with IEC 61439 in custom engineered panels?

Required documentation includes the assembly's technical data, results of design verifications, routine test reports, and a declaration of conformity, as specified in IEC 61439-1 Clause 7.

How are temperature rise limits addressed in custom engineered panels according to IEC 61439?

Temperature rise limits are addressed by ensuring that the temperature of accessible parts and internal components does not exceed specified limits under normal operating conditions, as per IEC 61439-1 Clause 10.10.

What is the significance of the rated diversity factor in custom engineered panels as per IEC 61439?

The rated diversity factor is significant because it allows for the optimization of conductor sizing and thermal performance by accounting for the non-simultaneous operation of components, as described in IEC 61439-1 Clause 5.3.3.

Can custom engineered panels be modified post-installation while remaining compliant with IEC 61439?

Modifications can be made, but they must undergo a new verification process to ensure continued compliance with IEC 61439 standards, including re-evaluation of temperature rise, dielectric properties, and protection measures as explained in IEC 61439-1 Clauses 7.4 and 10.

Custom Engineered Panel

Bespoke switchgear assemblies designed to meet unique project requirements beyond standard configurations.

Comprehensive Guide to Custom Engineered Panels

What is a Custom Engineered Panel?

A custom engineered panel is a bespoke assembly of electrical devices designed to control and distribute power in industrial and commercial applications. These panels are tailored to meet the specific needs of an application, offering flexibility in design, components, and configurations. The customization allows for optimal integration into the existing infrastructure, ensuring safety, efficiency, and reliability.

Key Design Considerations

Designing a custom engineered panel involves several critical considerations to ensure it meets the specific requirements of the application:

Load Requirements: Determining the power load is essential to select appropriate components and ensure efficient power distribution.
Environment: Consider the physical location and environmental conditions such as temperature, humidity, and potential exposure to dust or chemicals.
Space Constraints: Custom panels must fit within the available space while providing adequate room for component placement and heat dissipation.
Safety Standards: Compliance with relevant safety and industry standards, including IEC 61439, enhances reliability and safety.
Future Expansion: Designing with future scalability in mind allows for easy upgrades or expansions.

IEC 61439 Compliance Requirements

IEC 61439 is the international standard governing low-voltage switchgear and controlgear assemblies. Compliance with IEC 61439 ensures that the custom engineered panel meets defined safety and performance criteria:

Design Verification: Panels must undergo rigorous testing to verify the design against IEC 61439 specifications.
Routine Verification: Each assembly must be inspected and tested to ensure it meets the standard's requirements before installation.
Temperature Rise: Verification of temperature rise limits is crucial to prevent overheating and ensure longevity.
Dielectric Properties: Ensures that the panel can withstand operational voltages without insulation breakdown.

Typical Components of Custom Engineered Panels

Custom engineered panels are composed of various components selected based on application requirements:

Circuit Breakers: Protect electrical circuits from overloads and short circuits.
Contactors and Relays: Control the flow of electricity to various components within the system.
Switches: Facilitate manual control of power distribution.
Terminal Blocks: Connect wiring and provide a secure connection point for electrical circuits.
Busbars: Distribute power within the panel and connect to external circuits.

Forms of Internal Separation

Internal separation within custom engineered panels is critical to ensure safety and facilitate maintenance. According to IEC 61439, internal separation can be achieved in the following forms:

Form 1: No separation; all components are housed together.
Form 2: Separation of busbars from functional units.
Form 3: Separation of busbars and functional units from each other.
Form 4: Complete separation of busbars, functional units, and terminals.

IP Ratings

The Ingress Protection (IP) rating of a custom engineered panel indicates its resistance to dust and water ingress. The IP rating is critical for panels installed in harsh environments:

IP20: Protected against solid objects over 12mm, no protection against liquids.
IP54: Protected against dust and splashing water.
IP65: Dust tight and protected against water jets.
IP67: Dust tight and protected against immersion in water.

Applications of Custom Engineered Panels

Custom engineered panels are used across various industries due to their flexibility and adaptability. Common applications include:

Manufacturing: Control and distribution of power to machinery and production lines.
Data Centers: Ensure reliable power supply to critical IT infrastructure.
Oil and Gas: Manage power distribution in hazardous environments.
Commercial Buildings: Distribute power for lighting, HVAC, and other systems.

Why Type Testing Matters for Custom Engineered Panels

Type testing is a crucial aspect of ensuring the reliability and safety of custom engineered panels. Unlike routine testing, type testing involves comprehensive checks of the panel's design and construction to verify compliance with IEC 61439. This process includes:

Verifying Structural Integrity: Ensuring the panel can withstand mechanical stresses during normal operation.
Electrical Performance Validation: Assessing the panel's ability to handle specified loads without compromising safety.
Ensuring Safety Compliance: Confirming that all components and configurations meet international safety standards.

Specifications Table for a Custom Engineered Panel

Specification	Details
Voltage Rating	Up to 690V
Current Rating	Up to 6300A
IP Rating	IP20 to IP67
Form of Separation	Form 1 to Form 4
Compliance	IEC 61439
Temperature Rise	Compliant with IEC 61439 limits

Engineering Topics for Custom Engineered Panel

Custom Engineered Panel: Thermal Management

Custom Engineered Panel: Busbar Design

Custom Engineered Panel: IP Rating Selection

Custom Engineered Panel: Testing and Commissioning

Custom Engineered Panel: Form of Separation

Need a Custom Engineered Panel?

Patrion designs and manufactures type tested panel assemblies to your specifications.