NonStop S-Series Hardware Installation and FastPath Guide (G06.27+)

Introduction
HP NonStop S-Series Hardware Installation and FastPath Guide—540460-001
1-23
Installation Overview
Groundstraps
What Groundstraps Do
Groundstraps:
•
Maintain the ground potential between NonStop S-series system enclosures
•
Protect the system from harmful electrical transients
Number of Groundstraps
For any system, the number of groundstraps required is equal to the number of
NonStop S-series enclosures minus one. For example, if a system contains six
enclosures, five groundstraps are required.
Where to Install Groundstraps
Groundstraps are installed between two enclosures, either in a stack or between
adjacent stacks. Groundstraps are not required between separate rows. For examples
of groundstrap locations for a variety of enclosure arrangements, see Figure 2-11 on
page 2-14 and Figure 2-12 on page 2-15.
A groundstrap connecting two system enclosures in a double-high stack might be
installed at the factory on a new system or an add-on enclosure. However, if you have
three or more enclosures, you must install the groundstraps that link the base
enclosures.
More About Groundstraps and Power Requirements
•
Groundstraps are installed on systems that have more than one enclosure.
•
Groundstraps are 14.8 inches (37.5 centimeters) long.
Note. For grounding information for IOAM enclosures, your service provider can refer to
the Modular I/O Installation and Configuration Guide located in the NTL Hardware Service
and Maintenance Collection in the Support and Service Library.