UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

UL - 347 BULLETIN

UL Standard for Safety High Voltage Industrial Control Equipment

inactive
Organization: UL
Publication Date: 29 July 2008
Status: inactive
Page Count: 2
scope:

These requirements cover enclosed industrial control equipment and associated components intended for starting, stopping, regulating, controlling, or protecting electric motors or other electrical loads including refrigeration equipment, having a-c voltage ratings in the range of 2.2 - 2.5 or 4.0 - 5.0 kV or 6.2 - 7.2 kV.

These requirements cover equipment intended for use in ordinary locations in accordance with the National Electrical Code.

These requirements, as modified by the Standard for Centrifugal Fire Pumps, NFPA 20, also cover Fire Pump Controllers.

These requirements do not cover electronic or static devices, circuits, or systems.

These requirements do not cover the internal construction of electrical instruments (such as meters), or equipment for use in hazardous locations as defined in the National Electrical Code.

A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.

Document History

June 9, 2021
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.
April 9, 2021
UL Standard for Safety High Voltage Industrial Control Equipment
This standard is applicable to ac contactors applied at voltages in the range of 1 501V to 15kV, and metal-enclosed contactor-based controllers, control centers, and other control assemblies and...
May 29, 2020
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.
November 1, 2019
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
Scope and object This standard is applicable to ac contactors applied at voltages in the range of 1 501V to 15kV, and metal-enclosed contactor-based controllers, control centers, and other control...
March 6, 2019
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
Scope and object This standard is applicable to ac contactors applied at voltages in the range of 1 501V to 15kV, and metal-enclosed contactor-based controllers, control centers, and other control...
August 27, 2018
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.
August 7, 2018
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.
May 15, 2015
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.
December 8, 2014
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.
July 25, 2014
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.
June 20, 2014
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
Scope and object This standard is applicable to ac contactors applied at voltages in the range of 1 501V to 15kV, and metal-enclosed contactor-based controllers, control centers, and other control...
January 17, 2013
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.
March 18, 2011
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
Scope and object This standard is applicable to ac contactors with rated voltages of 1 501 to 7 200 V, and metal-enclosed contactor-based controllers, control centers, and other control assemblies...
May 8, 2009
UL Standard for Safety High Voltage Industrial Control Equipment
These requirements cover enclosed industrial control equipment and associated components intended for starting, stopping, regulating, controlling, or protecting electric motors or other electrical...
August 22, 2008
UL Standard for Safety High Voltage Industrial Control Equipment
These requirements cover enclosed industrial control equipment and associated components intended for starting, stopping, regulating, controlling, or protecting electric motors or other electrical...
347 BULLETIN
July 29, 2008
UL Standard for Safety High Voltage Industrial Control Equipment
These requirements cover enclosed industrial control equipment and associated components intended for starting, stopping, regulating, controlling, or protecting electric motors or other electrical...
October 19, 2007
UL Standard for Safety High Voltage Industrial Control Equipment
These requirements cover enclosed industrial control equipment and associated components intended for starting, stopping, regulating, controlling, or protecting electric motors or other electrical...
May 11, 2007
UL Standard for Safety High Voltage Industrial Control Equipment
A description is not available for this item.
June 28, 2005
UL Standard for Safety Medium-Voltage AC Contactors, Controllers, and Control Centers
A description is not available for this item.

References

Advertisement