UL508A Industrial Control Pannels

UL508A：Safety Basis and Technical Barrier of Industrial Control Panels

In the field of industrial automation, never compromising on safety and reliability is the bottom line. UL508A Standard is authoritative criteria for this bottom line. Since we obtain UL Factory Certification in 2014, we consistently integrate core element of UL508A into design & manufacture of Industrial Control Pannel. This column is to provide you profound understanding of UL508A, insight into industrial safe, and significance of choosing UL Certification Factory.

A, What is UL508A?

UL508A is an Industrial Control Equipment Standard developed by Underwriters Laboratories. It is an authoritative safety standard specifically intended for regulating design, manufacture and test of industrial control panel or distribution board.

UL508 vs UL508A:

· Ordinary components certification, e.g. UL508: It applies to individual components safety. e.g. contactor, control relay.

· UL508A Certification: It intends for industrial control panel that consists of assemblies of hundreds of components. It is to guarantee system operation is coordinative safety and reliable, and risks including but not limited to electric shock, fire, equipment damage are essentially eliminated.

In brief, UL508A Certification intends for “Life System” that is scientifically designed and rigorously verified, instead of “Components”

B, UL508A Core Requirement illumination- Exhibition of Professional and Safety

UL508A Standard convers rigorous and detailed specifications. Followings are major rules:

1. Selection and Compatibility of Components

o Requirement: Critical components in Industrial Control Panel such as circuit breaker, contactor, VFD, PLC power supply must be equipped with UL certification.

o Exhibition of Professional: We guarantee rating and breaking capacity of each component match with circuit, and eliminate risk of cascade fault due to single components is underpowered like “A pony pulling a big cart”.

2. Size and Protection of Conductor

o Requirement: Cable or busbar that is specified ampacity must be equipped with proper overcurrent protection device such as fuse, circuit breaker.

o Exhibition of Professional: We apply precise calculation to guarantee cable won’t overheat and fire, achieve accurate protection.

3. Short-Circuit Current Rating (SCCR)

o Requirement: Industrial Control Panel must mark maximum short-circuit current rating.

o Exhibition of Professional: We apply precise calculation and test to guarantee industrial control panel can interrupt fault short-circuit current under serious short-circuit fault to prohibit arc explosion, and protect safety of operator and equipment.

4. Clearance and Insulation

o Requirement: Industrial Control Panel must comply with requirement of clearance between conductor, live parts and grounded metal, and creepage distance under different voltage.

o Exhibition of Professional: We utilize proper layout design and installation to prohibit arc, short-circuit or electric leakage due to humid and dusty industrial environment.

5. Label and Documents

o Requirement: Industrial Control Panel must include clear and permanent nameplate, filed wiring diagrams, internal wiring diagram and warning symbol.

o Exhibition of Professional: In order to guarantee accuracy and traceability of operation, we provide complete documents is your “Safety Data Sheet” of your commissioning, maintenance and expansion.

C, Why is essential to select UL Certification Factory?

Industrial Control Panel with UL508A Certification is by no means components assembly. It represents:

· Systematic Quality Assurance: UL Certification Factory must develop QMS reviewed by UL to guarantee all Industrial Control Panels are compliant with UL standard.

· Technical Competence: UL Certification Factory must possess qualified person and utilize process of record registration to implement design, material selection, assembly and test.

· Advantage of Legislation and Insurance: End-user may be liable for incident arising out of use of unverified industrial control panel. However, industrial control panel with UL508A certification is your certificate of safety compliance, and recognized by insurance company.

· Reliable Long-Term Investments: Industrial control panel with UL508A certification signify lower Breakdown Rate, longer Service life, higher Stability and lower Total Cost of Ownership (TCO)

UL508A Standard is safety commitment developed by science and engineering. Apart from certification for entering the Global Market, it is also a commitment to your property. As senior UL Certification Factory, our deliverable industrial control panel is carrying ultimate pursuit of safety.

Choosing us is choosing security and trust that undergone decade verification.