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Electrostatic Dischargeand Grounding

Cisco Best Practices

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Implications of Poor Operational Practices

Poor Customer Experience Frequent system downtime

Long repair time

Slow availability of new function

Higher OPEX Costs Delayed benefits of innovation

Lack of flexibility

Function duplication

Manual processes

Increased Unquantifiable Risk Unforeseen vulnerabilities

Security breaches

Data loss

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High Availability Average Cost of Impact

Industry ApplicationAverage Cost / Hour of

Downtime (US$)

Financial Brokerage Operations $7,840,000

Financial Credit Card Sales $3,160,000

Media Pay-Per-View $183,000

Retail Home Shopping (TV) $137,000

Retail Catalog Sales $109,000

Transportation Airline Reservations $108,000

Entertainment Tele-Ticket Sales $83,000

Shipping Package Shipping $34,000

Financial ATM Fees $18,000

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Large ESD Charges Are Generated By:

Walking acrossinadequate carpetmaterial:

1,500 - 35,000 volts

Walking over untreatedvinyl floor:250 - 12,000 volts

Handling a vinyl envelope:600 - 7,000 volts

Worker at anungrounded bench:

700 - 6,000 volts

Unwinding regular tape:9,000 - 15,000 volts

Types of ESD Damage toElectronic Products

Catastrophic:Sudden and complete crashof the system

Cumulative:

Device failures /

silent failures

Latent:

Failure over time

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Electrical Current Types

First Type: Current flows easily from / to

metals and people

Can be grounded

Second Type: Electrical current does not flow

easily

PlasticsCANNOTbe

grounded Typically very high charging

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Cisco Recommendations toManage ESD and Secure

Proper Grounding Installation

Step by Step Cisco Best Practices

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Network OperationsCenter

Inspect

Receive

Store

Define the Areas Where NetworkProducts Are Handled or Installed

1

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Network OperationsCenter

Inspect

Receive

Store

Identify Control Level Based on Level ofPotential Exposure

High Level I

Mid Level II

Low Level III

High Level I

Mid Level II

Mid Level II

Low Level III

2

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High Level I

Use Appropriate Symbols to Identify Areas WhereSensitive Items Will Be Handled

Network

OperationsCenter

High Level I

Network OperationsCenter

High Level I

3

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Prepare the Location Make Sure theBuilding is Properly Grounded

4

Earth Ground

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Ground Point

Ground

Point

Ground

Point

Ground

Point

High Level I

Ground Work Stations Where NetworkProducts Are Physically Handled

5

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High Level I

Prepare Rack Room Connect Properly toEarth Ground

6

Earth Ground

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Example of Good(check mark)workstation

High Level I

Ground Work Stations Areas When PhysicallyHandling Network Products

7

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A - Grounding in an electronic equipment room with an existing groundinggrid beneath the floor

Building SteelColumns

Fake- UpperFloor

Grounding / SignalReference Grid

Network Product

Welded Bounding Strap

Power Center

Ground Network Products According toProduct Documentation Instructions

8

Always

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B - Grounding in an electronic equipment room without an existinggrounding grid beneath the floor

Ground Network Products According toProduct Documentation Instructions

9

Always

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Use Resistive Grounding andInsulating Materials

High Level I

Mid Level II

100% Cotton Wheels Wrist Strap Foot Strap

10

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Provide Appropriate Ground Pathsto Avoid Generation and Accumulation of Static

Floor mats / floor finishes -insulating floor

High Level I

11

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High Level I

Mid Level II

Low Level IIIAlways

Always Carry Sensitive ItemsInside ESD Bags

12

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Protected ESD mat

Always Place ESD-Sensitive Items on aProtected ESD Surface

High Level I

Mid Level II

Low Level IIIAlways

13

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Touch ONLY If You Are Grounded or YourBody Static Charge Has Been Neutralized

High Level I

Mid Level II

Low Level IIIAlways

14

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Touch ONLY If You Are Grounded or YourBody Static Charge Has Been Neutralized

15

High Level I

Mid Level II

Low Level IIIAlways

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16 To Store or Ship, Always Pack Inside ESDBags and Corrugated Product Boxes

High Level I

Mid Level II

Low Level IIIAlways

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