1 Important Safety Instructions
All information provided in this instruction manual and additional referenced documentation should be reviewed and
acknowledged by all personnel responsible for the use of the equipment. All models represented in this manual are for
illustrative purposes only, due to the individual specifications associated with each customer. Vertiv will not assume
responsibility for actual use establish by the models.
Proper installation, operation, and maintenance are critical to the performance of the equipment.
Correct operating conditions in terms of input voltage, current and the fault capacities must be ensured at the time of
installing UL891 switchboard.
Refer ANSI C37.20.1 for abnormal operational conditions.
General instructions
• Read all the instructions included in this IUG before working with the equipment.
• Store and keep this IUG to ensure proper commissioning and maintenance to ensure the prolong use of the
equipment.
• Install the switchboard based on the design limitations as given in this IUG. The design limitations are presented
on the main nameplate and should never be installed in applications that exceed the limits presented by the
nameplate.
• Always follow standard safety protocols set forth by your company.
• Turn off all the power sources and de-energized the equipment before removing the covers and opening of
doors of the equipment. All components should be locked out and tagged in line with standard protocol and
ANSI Standard Z244.1 Control of Hazardous Energy – Lockout/Tagout.
• Wear PPEs while working on the switchboard.
• Only Veritv qualified personnel should work on the Switchboard.
• If additional information is needed, please contact your Vertiv representative.
1 Important Safety Instructions Proprietary and Confidential ©2024 Vertiv Group Corp. 1
Vertiv™ UL891 Switchboard Installer/User Guide
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