What is considered an industrial control panel?
Industrial control panels (ICPs) are defined by the National Electrical Code (NEC) Section 409.2 as an assembly of two or more power circuit components, control circuit components, or any combination of power and control circuit components.
What does an industrial control panel do?
Industrial electrical control panels are designed and utilized for the control of mechanical machinery and equipment. Industrial control panel units are designed to handle a particular equipment arrangement and include certain devices that enable the industrial operator to control the equipment.
What is the maximum input supply voltage that can be in a UL 508a listed panels?
1000 volts
1.1 These requirements cover industrial control panels intended for general industrial use, operating from a voltage of 1000 volts or less.
Do industrial control panels need to be UL listed?
Baked-in safety for all components
Therefore, ALL mechanical draft equipment and controllers, including Motor Control Centers, Switchboards, Panel Boards and Draft Controllers, require separate and unique UL certifications.
What are the 3 UL industrial control panel labels?
Within UL product category NITW, there are three main product identities associated with industrial control panels, “Enclosed Industrial Control Panel,” “Open Industrial Control Panel” or “Industrial Control Panel Enclosure.” These specific product identities need to be considered by the Authority Having Jurisdiction ( …
What is inside PLC panel?
Put simply, a PLC panel is a special steel box that contains electrical components required to run a factory machine or process. PLC stands for Programmable Logic Controller, an industrial hardened computer usually found inside factory control panels.
What is inside control panel?
Programmable Logic Controller (PLC).
This is essentially a CPU contained inside the control panel. This unit is the brains of the control panel, providing monitoring and control of the various mechanical processes. In will include various inputs and outputs to and from mechanized functions of the production equipment.
What components are allowed to be used in a UL 508A panel?
Examples would be DC power supplies, industrial PCs, and PLC components. UL-508 recognized components can be used in a UL-508A design, but only within the manufacturer’s installation specifications. These are components that cannot protect themselves such as terminal blocks, fuse blocks, and power distribution blocks.
Which industrial control panels require SCCR?
In UL 508A, the UL Standard for Safety for Industrial Control Panels and the National Electrical Code (NEC®) the standard requires industrial control panels that contain power circuit components (supply main line power to loads such as motors, heating, lighting, appliances or receptacles) to be marked with an SCCR, …
What does a UL Listed industrial control Panel label signify?
What does a UL Listed Industrial Control Panel label signify? A UL label signifies that the panel builder has met the requirements of UL 508A, and that their panels are subject to inspection by UL field representatives.
What is the CCN for listed industrial control panels for the US and Canada?
There are 4 different types of CCN’s: XXXX – UL listed for use in the U.S. and comply with U.S. NEC requirements. XXXX7 – UL listed for use in Canada and comply with the CSA standards. XXXX2 – UL Recognized for use in the U.S.
What are the 4 elements of a UL listing mark for North America?
The UL Classification Marking appearing on a product typically consists of four required elements:
- UL in a circle symbol.
- Word Classified.
- Product name or company name/file number.
- Issue/serial number or alphanumeric control number.
What does it mean if a Category control number has a suffix of 7?
UL products certified for Canada to
Some of the most common UL product categories referenced in CCNs include: NKCR (No Suffix): Covers UL-listed products for the U.S. only. NKCR7 (Suffix 7): Covers UL products certified for Canada to CSA standards. NKCR2 (Suffix 2): Covers UR-recognized component products for the U.S.
Is the UL mark on wire insulation adequate traceability?
UL Recognized or Listed Wire and cable must be traceable to the original UL Mark (label) (typically affixed to the spool by adhesive or tag). Surface printing on the wire alone is not sufficient verification of UL wire certification.
What is UL758?
UL758 Cables & Wires
Underwriters Laboratories’ standard UL 758 covers Appliance Wiring Material (AWM). It sets out the specifications for single and multi-core insulated conductors for cables and wires used within factory and production equipment, including for connecting appliances.
Is UL recognized in Canada?
In 2013, UL was accredited by the Standards Council of Canada (SCC) as a nationally recognized Standards Development Organization (SDO) to develop National Standards of Canada (NSCs).
What is ul2556?
UL 2556, 5th Edition, April 30, 2021 – UL Standard for Safety Wire and Cable Test Methods. This standard describes the apparatus, test methods, and formulas to be used in carrying out the tests and calculations required by wire and cable standards.
