Connect Power And Ground The Chassis; Grounding Requirements - Zhone MXK Hardware Installation Manual

Connect power and ground the chassis

This section contains the following information:
•
Grounding requirements, page 41
•
Connect power to the front of the MXK and ground the chassis, page 42
•
Connect power to the rear of the MXK 823 and ground the chassis,
page 47
•
Connect power to the MXK 319 and ground the chassis, page 50
•
Verifying proper grounding between the chassis and the rack, page 52
Note: Bare, covered, or insulated grounding conductors must comply
with Underwriters Laboratory (UL) standards. Individually covered
or insulated grounding conductors shall have a continuous outer
finish that is either green or green with one or more yellow stripes.
The equipment grounding conductor should be connected to the
ground at the service equipment. The grounding cable must be rated
at VW-1 or higher.
Zhone recommends grounding the MXK using minimum 10 gauge
copper wire and NRTL-listed two hole compression-type connectors
(such as Amphenol part number 1527272-3).

Grounding requirements

Use the guidelines in this section to provide a system ground for the MXK.
Before concluding a MXK installation and applying DC power, measure the
impedance of the building ground reference and ensure that it is less than 25
ohms, for safety. Use an ECOS 1023 POW-R-MATE or an EMC Instrument
Model 3710 or similar meter to do this. Zhone recommends that the
impedance be 5 ohms or less for proper equipment operation.
If the ground path connected to the MXK has an impedance of more than 5
ohms, make improvements to the grounding system before installing the
MXK equipment.
Other grounding requirements are as follows:
•
The earth ground rod is normally buried in the ground at the site. Observe
local electrical codes for buried grounding techniques and requirements.
Ensure that the ground rod has been installed per local, telco, and NEC
code requirements.
•
Use a dedicated power source that is only shared with other isolated
bonding network (IBN) configured equipment to provide power to the
MXK and all other related equipment. This configuration prevents
interference from possible high surge or noise currents present in some
industrial buildings. Otherwise, you must ensure a proper grounding path
of less than 5 ohms to the building ground.
Install the MXK
MXK Hardware Installation Guide
41