Structured Ground BICSI Approved

A Flash Of Lightning Is Often Followed By A Gut-Wrenching Crash

Trouble is . . . . . It’s not always Thunder

Is Your Building Ready for this?

Data Center Grounding Tim Hurley, CCNT, CSI/MAI Data-Comm Sales Upstate NY 518-461-8489 [email_address]

What We’ll Cover ,[object Object],[object Object],[object Object],[object Object]

Grounding System Theory ,[object Object],[object Object],[object Object]

Specification Layout for Data Center Grounding Source BICSI TDM Manual, 10 th Edition Roadmap

What are the effects of improper grounding?

[object Object],[object Object],[object Object],Network Grounding Solutions

Grounding & Induced Voltages Location: PANDUIT EBC Ungrounded Cabinet Grounded Cabinet ~ 0.15 Volt, 16 MHz Waveform on Rack 0 Volts

Network Grounding Solutions This data center grounding system did not comply with industry standards

Basic System Requirements ,[object Object],[object Object],[object Object],[object Object],[object Object]

TIA-942, Section G.5.1.7.5: ,[object Object],[object Object]

Problems with racks & cabinets ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Paint Piercing Grounding Washer

Paint Piercing Washer Kit Bonding Screws Equipment Jumper Kit 24” Electrostatic Discharge Kit Rack Grounding Strip Kit Electrostatic Discharge Kit 36” Electrostatic Discharge Kit 24” Common Bonding Network to Rack Jumper Kit Common Bonding Network typically #2AWG bare copper

[object Object],[object Object],[object Object],Thread-Forming Screws Meets TIA-942, Telcordia GR-1275-CORE

Retrofit Rack Grounding Part Number RGRKCBNJEJ HTCT copper compression HTAP Grounding jumper Grounding jumper Rack grounding busbar

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Electrostatic Discharge (ESD) Port

[object Object],[object Object],[object Object],[object Object],[object Object]

Sizing the Telecommunications Bonding Backbone (TBB) ,[object Object],3/0 Greater than 20 (66) 2/0 16-20 (53-66) 1/0 13-16 (42-52) 1 10-13 (34-41) 2 8-10 (27-33) 3 6-8 (21-26) 4 4-6 (14-20) 6 Less than 4 (13) TBB Size (AWG) TBB Length in Linear meters (feet)

Quality Components The grounding system is no more reliable than its weakest link

Compression HTAPS – Two Types of Ease-of-Use Good design facilitates installation and verification Easy to Install Slot Allows Cable Ties to Hold Conductors Together Installs quickly & safely, permanent compression design Easy to Inspect Clear, high impact material allows 360° inspection of crimped connection

When we say “low impedance path,” what does that mean? ,[object Object],[object Object],Photos of the NEBS Level 3 test setup – Measuring the resistance of a crimped lug

NEBS Level 3 Lugs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Structured Ground BICSI Approved

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