01-Cable-Testing-Standards-Overview-of-the-IEEE-400-Bundle

• The “omnibus” guide revised from 2001 IEEE 400 - 2012 Omnibus IEEE Guide for Field Testing and Evaluation of the Insulation of Shielded Power Cable Systems Rated 5 kV and Above... •

CABLE TESTING STANDARDS:

O V E R V I E W O F T H E

CABLE TESTING STANDARDS:

O V E R V I E W O F T H E

IEEE 400™ BUNDLE

Moderator

n   Ron Spataro

AVO Training Institute Marketing Manager

Today’s Presenter: Alan Mark Franks

AVO Training Institute, Senior Cable Instructor and Curriculum Advisor

CABLE TESTING STANDARDS: O V E R V I E W

IEEE 400™ BUNDLE

n   Institute of Electrical and Electronic Engineers

IEEE Cable Testing Standards

n   Cable Outage Research U.S

Applications Center ( NEETRAC)

•  Indicate significant concern for U.S cable installations

workmanship issues

Need for Cable Testing Standards

U.S Cable Failures

Outages by equipment type

n   Causes of Cable Failure

–  Not following instructions

–  Lack of training and experience

–  Inadequate cable installation

•  Outages and repairs are costly

•  Negative effects on system reliability

•  Find “bad actors” prior to failure

•  Test after repairs

•  Test new installations

Why Test?

•  Identify status of existing cables

•  Identify installation quality issues

•  Baselines for future cable testing

Where Do You Start

•  Five major standards

•  Current tests being utilized industry

IEEE 400 Series ( Bundle)

•   IEEE Guide for Field Testing of Shielded Power Cable Systems Using Very Low

Frequency (VLF) (Less Than 1 Hz)

•  Evolved with cable and testing technology

•  The “omnibus” guide revised from 2001

IEEE 400 - 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

•  Includes safety awareness

•  General discussions for field testing of cables

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

•  Safety Awareness

–  Voltage verification required

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

•  Protective grounding

•  Rated and tested

•  PPE required

•  Work area protection/guarding

•  Minimum Approach Distances

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Grounding

General discussions for field testing of cables

–  Testing objectives

–  Suitable field tests

IEEE 400 - 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Field Testing Methods (5)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Field Testing Methods (continued)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Field Testing Methods

1 Voltage Withstand

•  Simple (non-monitored ) withstand

–  Ability to hold voltage is recorded

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Field Testing Methods

2.  Dielectric Response (5 tests)

I.  Dissipation factor (tan delta)

III.  Recovery Voltage

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Dielectric Response (Continued)

–  Provides overall insulation diagnosis

–  Analyze effects but not locate defects

–  Values primarily influenced by condition, age etc

–  Results can be compared & used for trending

IEEE 400 - 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Dielectric Response (Continued)

–  Absolute tan delta, tip-up and stability values are derived

IEEE 400 - 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Dielectric Response (Continued)

II.  DC leakage current

cables

voltage

–  Performed as a step test

after test

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Dielectric Response (Continued)

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Dielectric Response (Continued)

IV.  Polarization/depolarization

–  Also used to calculate Polarization Index (PI)

Dielectric Response (Continued)

V.  Dielectric spectroscopy

–  Can calculate tan delta

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Field Testing Methods

3.  Partial Discharge-Electrical Measurement

–  Partial discharges are initiated

–  Conducted at Uo or higher voltages

–  Above Uo used to verify no PD at acceptance test level

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

PD

Event

PD Event Location

Field Testing Methods

3.  Partial Discharge-Acoustic Measurement

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

PD Acoustic Measurement

Field Testing Methods

4.  Time Domain Reflectometry

–  Locates discontinuities

–  Shape of reflected pulse assists in identification

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

TDR Measurement

Field Testing Methods

5.  Thermal Infrared Imaging

–  Detects connector high resistivity

IEEE 400 – 2012 (Omnibus)

IEEE Guide for Field Testing and Evaluation of the Insulation

of Shielded Power Cable Systems Rated 5 kV and Above

Thermal Scans

•  Point standard for testing laminated

insulated cables with HVDC

•  Includes testing procedures

•  Provides guidelines for test voltages

•  Methods of evaluation

– Current-time relationship

– Resistance values

solid dielectric cables

IEEE400.1 - 2007

IEEE Guide for Field Testing of Laminated Dielectric, Shielded Power Cable Systems Rated 5 kV and Above with High Direct Current Voltage

DC Test

•  Point standard for VLF withstand tests

IEEE 400.2 - 2013

IEEE Guide for Field Testing of Shielded Power Cable Systems Using Very Low Frequency (VLF) (Less Than 1 Hz)

VLF Test

•  Background information on partial discharge detection and location

IEEE 400.3 - 2006IEEE Guide for Partial Discharge Testing of Shielded Power Cable Systems in a Field Environment

Partial Discharge

•  Provides for use of damped alternating current voltages for field testing

•  Guidelines for evaluation of test results

IEEE 400.4 - 2015

IEEE Guide for Field Testing of Shielded Power Cable Systems Rated

5 kV and Above with Damped Alternating Current (DAC) Voltage

Simulated DAC Wave

ü Cable outages & repairs are costly

ü End user history and specific test data is key

Summary

Join Us For Our Next Webinar

n  AVO Electrical Cable Webinar Series Part 2: Mark Franks

n  Tuesday, June 13, 2017 at 1 PM CST

Register here:

“The Trillion Dollar Problem –

Power Cable Outages And The Training Connection”

Electrical Cable Training

n   AVO Cable U was designed as a technologically advanced

“real world” place for every electrical cable installation,

testing and diagnostic application

n   Medium-Voltage Cable Technician Certification:

•   Cable Splicing & Terminating, Medium-Voltage,

•   Cable Fault Location & Tracing, Medium-Voltage

§   Medium-Voltage Cable Diagnostics & Testing:

•   Certification Cable Testing & Diagnostics, Medium-Voltage

Questions?

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