標準號：UL 887-1999
中文標準名稱：延時作用的定時鎖
英文標準名稱：UL Standard for Safety Delayed-Action Timelocks
標準類型：A91;N18
發布日期：1999/10/5 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：A91;N18
國際標準分類號：13.310
適用范圍：1.1 These requirements cover delayed-action timelocks intended for attachment on the doors of safes, chests, vaults, and the like, to provide a means for locking the door for a predetermined length of time as protection against burglary or robbery or both.1.2 The timelocks covered by these requirements may be automatic, manual, or both, in operationdepending upon their design. Automatic devices can be factory set to a fixed minimum time delay of 5minutes. Manual devices are generally set by the user with a key or similar device to provide delays of 120 hours or more. Some designs may include both the automatic delay feature for interior robberyprotection and the manual delay feature for burglary protection.1.3 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-productrequirements 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.