UL 104 UL Standard for Safety Elevator Door Locking Devices and Contacts
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UL 104 Document Information:
Title
UL Standard for Safety Elevator Door Locking Devices and Contacts
Underwriters Laboratories Inc.
Publication Date:
Mar 12, 1998
Scope:
These requirements cover the following elevator appliances intended for installation and operation in accordance with the requirements of the Safety Code for Elevators and Escalators, ASME A17.1:
a) Hoistway-Door Interlocks,
b) Hoistway-Door Combination Mechanical Lock and Electrical Contacts, and
c) Hoistway-Door and Car-Door or Gate Electrical Contacts.
These requirements are intended to supplement and be used in conjunction with the Safety Code for Elevators and Escalators, ASME A17.1.
These requirements do not cover elevator appliances rated more than 600 volts.
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