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UL 325 Table
PROTECTION AGAINST ENTRAPMENT
Effective: March 1, 2000
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Horizontal Slide
Vertical Lift
Vertical Pivot
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Swing Gate
Vertical Barrier (Arm)
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Class: I & II |
A |
B1, B2, or D |
A or C |
A, B1, C or D |
Class: III |
A, B1, or B2 |
A, B1, B2, D, or E |
A, B1, or C |
A, B1, C, D, or E |
Class: IV |
A, B1, B2, or D |
A, B1, B2, D, or E |
A, B1, C, or D |
A, B1, C, D, or E |
Q: Why
UL 325? |
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| A:
The primary intent of the standards is to prevent
entrapment of persons in automated gate systems, as
well as preventing injuries from pinch points. UL
325 is not concerned about the gate contacting vehicles,
only the entrapment of people.
UL325 went into effect on March 1, 2000. The UL 325
standard is currently voluntary in most areas, although
its provisions could carry the weight of law if they
are mandated by a state, local or federal government.
(Such action was taken by the state of Nevada in March
of 2000. Many municipalities and counties are also
currently contemplating the adoption of these standards
so contacting the local building departments is strongly
advised.)
For more information go to http://www.dasma.com/ |
Note: The same type of device shall
not be utilized for both the primary and secondary entrapment
protection means. Use of a single device to cover both
the opening and closing directions is in accordance
with the requirement; however, a single device is not
required to cover both directions. A combination of
one Type B1 for one direction and one Type B2 for the
other direction is the equivalent of one device for
the purpose of complying with the requirements of either
the primary or secondary entrapment protection means.
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Entrapment protection types:
Type A – Inherent entrapment sensing system.
Type B1 – Provision for connection of, or
supplied with, a non-contact sensor (photoelectric sensor
or the equivalent).
Type B2 – Provision for connection of, or
supplied with, a contact sensor (edge device or the equivalent).
Type C – Inherent adjustable clutch or pressure
relief device.
Type D – Provision for connection of, or
supplied with, an actuating device requiring continuous pressure
to maintain opening or closing motion of the gate.
Type E – An inherent audio alarm.
CLASS OF OPERATION
Residential Vehicular Gate Operator - Class
I - A vehicular gate operator (or system) intended
for use in a home of one-to four single family dwelling, or
garage or parking area associated therewith.
Commercial / General Access Vehicular Gate Operator
- Class II - A vehicular gate operator (or
system) intended for use in a commercial location or building
such as a multi-family housing unit (five or more single family
units), hotel, garages, retail store, or other building servicing
the general public.
Industrial / Limited Access Vehicular Gate Operator
- Class III - A vehicular gate operator (or
system) intended for use in an industrial location or building
such as a factory or loading dock area or other locations
not intended to service the general public.
Restricted Access Vehicular Gate Operator
- Class IV - A vehicular gate operator (or
system) intended for use in a guarded industrial location
or building, such as an airport security area or other restricted
access locations not serving the general public, in which
unauthorized access is prevented via supervision by security
personnel.
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