IEEE P1653.4/D1, November 2009
Standard for dc Traction Power System Field
Testing and Acceptance Criteria for System
Applications up to 1500 Volts dc Nominal
Sponsored by the Rail Transit Vehicle Interface Standards Committee of the IEEE Vehicular
Technology Society
Copyright © 2008 by the Institute of Electrical and Electronics Engineers, Inc.
Three Park Avenue
New York, New York 10016-5997, USA
All rights reserved.
This document is an unapproved draft of a proposed IEEE Standard. As such this document is
subject to change. USE AT YOUR OWN RISK. Because this is an unapproved draft, this
document shall not be utilized for any conformance/compliance purposes. Permission is hereby
granted for IEEE Standards Committee participants to reproduce this document for purposes of
international standardization consideration. Prior to adoption of this document, in whole or in part,
by another standard development organization permission shall first be obtained from the IEEE
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Introduction
This introduction provides background on the rationale used to develop this standard, which may
aid in the understanding, usage, and applicability of this standard.
This standard is intended to apply to field testing of installed dc traction power substation (TPSS)
equipment rated at 1500 V dc nominal or less. Installed traction power substations may be ready
for revenue service once the tests included in this standard are performed and accepted by the
authority. Factory testing, “design and production tests” of a traction power substation and its
individual equipment is covered in other standards. This standard is designed to verify the
integration of individual pieces of equipment covered in other standards to achieve their intended
function once they are assembled and integrated as a complete traction power substation
configured into a system-wide traction power system.
Notice to users
Laws and regulations
Users of these documents should consult all applicable laws and regulations. Compliance with the
provisions of this standard does not imply compliance to any applicable regulatory requirements.
Implementers of the standard are responsible for observing or referring to the applicable
regulatory requirements. IEEE does not, by the publication of its standards, intend to urge action
that is not in compliance with applicable laws, and these documents may not be construed as
doing so.
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the IEEE does not waive any rights in copyright to this document.
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Errata
Errata, if any, for this and all other standards can be accessed at the following URL:
http://standards.ieee.org/reading/ieee/updates/errata/index.html. Users are encouraged to check
this URL for errata periodically.
Interpretations
Current
interpretations
can
be
accessed
http://standards.ieee.org/reading/ieee/interp/index.html.
at
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URL:
Patents
Attention is called to the possibility that implementation of this standard may require use of subject
matter covered by patent rights. By publication of this standard, no position is taken with respect
to the existence or validity of any patent rights in connection therewith. The IEEE is not
responsible for identifying Essential Patent Claims for which a license may be required, for
conducting inquiries into the legal validity or scope of Patents Claims or determining whether any
licensing terms or conditions provided in connection with submission of a Letter of Assurance, if
any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard
are expressly advised that determination of the validity of any patent rights, and the risk of
infringement of such rights, is entirely their own responsibility. Further information may be
obtained from the IEEE Standards Association.
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At the time this standard was completed, the working group had the following membership:
Jay Sender, Chair
Sam Kundu, Vice Chair
Ahmed Zobaa
Alexander Kline
Arthur McVitty
Ashton Robinson
Benjamin Stell
Bob Fisher
Chris Pagni
Chuck Ross
Dave Prakash
Constantinos Orphanides
David Groves
Dev Paul
David Reinke
Earl Fish
Fred Rooney
Gary Touryan
Gilbert Cabral
Greg Thompson
Herb Zwilling
Jeffrey Sisson
Jeftic Mladen
John Pascu
John Whitney
Keith Miller
Mark Griffiths
Mike Dinolfo
Nerendra Shah
Nick Rassias
Oscar Ravarra
Paul Forquer
Peter Lloyd
Raj Ganeriwal
Ramesh Dhingra
Ray Davis
Raymond Strittmatter
Richard Shiflet
Roger Avery
Ron Clark
Sergo Sagareli
Stephen Norton
Steve Bezner
Stuart Kuritzky
Tanuj Khandelwal
Theodre Bandy
Tim Fink
Timothy McBride
Tom Langer
Tom O’Hara
Tom Young
Tristan Kneschke
Vince Paparo
Yunxiang Chen
The following persons were on the balloting committee: (To be provided by IEEE editor at time of
publication.)
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Contents
1. Overview ..................................................................................................................................................... 2
1.1 Scope ..................................................................................................................................................... 2
1.2 Purpose .................................................................................................................................................. 2
2. Definitions, Abbreviations, and Acronyms .................................................................................................. 2
2.1 Definitions ............................................................................................................................................. 2
2.2 Abbreviations and Acronyms ................................................................................................................ 2
3. Testing Requirements .................................................................................................................................. 3
3.1 General………………………………………………………………………………………………3
3.2 Procedures ............................................................................................................................................. 3
3.3 Test Equipment ……………………………………………………………………………………….4
3.4 Substation Physical Inspection and Mechanical Operation ………………………………………….. 4
3.5 Electrical Insulation Tests …………………………………………………………………………… 5
3.6 Ground Verification Test …………………………………………………………………………….. 5
3.7 Substation Functional Test ................................................................................................................... 5
3.8 Short Circuit Test ................................................................................................................................. 7
3.9 Train Starting Tests .............................................................................................................................. 8
3.10 Audible Sound Level Test .................................................................................................................. 9
3.11 Infrared Thermographic Inspection/Test ………………………………………………………… 9
Annex A
Bibliography …………………………………………………………………………………………….10
Annex B
B.1
Short Circuit Test
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B.2
Train Start Test
B.3
Stray Current Structure - to - Earth Voltage Test ........................................................................... 12
B.4
Running Rail - to - Earth Resistance Test ………………………………………………………… 1
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Standard for dc Traction Power System Field
Testing and Acceptance Criteria for System
Applications up to 1500 Volts dc Nominal
1.
Overview
1.1
Scope
This standard provides field test and acceptance criteria for transportation system applications
powered by a dc traction power system up to 1500 volts nominal.
1.2
Purpose
The purpose is to ensure that the installed equipment will function as intended by the plans and
specifications, thereby providing reliable service for the anticipated life of the equipment.
2.
Definitions, Abbreviations, and Acronyms
2.1
Definitions
2.1.1
General
For purposes of this standard, the following terms and definitions apply. IEEE 100, The
Authoritative Dictionary of IEEE Standards Terms, Seventh Edition, should be referenced for
terms not defined in this clause.
2.1.2
authority – The owner/user as defined by the contracting document.
2.1.3 contingency operation – The condition occurring when power normally supplied to a
segment under test is restricted due to one or more traction power substations being deenergized and/or one or more dc feeder breakers being open.
2.1.4 safety/security equipment – Certain equipment including intrusion alarm, fire protection,
safety interlocks, and annunciation devices.
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3.
Testing Requirements
3.1
General
This standard provides field test and acceptance criteria for equipment once it is assembled and
integrated as a complete traction power substation. Where there are field testing requirements for
certain components addressed in other applicable standards, these standards are referenced in
the appropriate clauses of this standard. This standard does not attempt to identify or address the
detailed testing or sequence of the tests performed on ancillary components associated with a
system-wide traction power system in the vicinity of a traction power substation. As a standard it
is limited to addressing the traction power substation components and the corresponding criteria
that are required for safety and effective functioning after installation. This standard is intended to
provide a set of uniform field test requirements to verify that installed traction power substation
equipment satisfies safety and performance criteria when assembled and integrated as a
complete traction power substation to serve as a source of dc traction power for the train
propulsion system. This standard references contract documents for the technical requirements
needed to perform a test. In lieu of an authority incorporating specific technical requirements into
the contract documents the authority’s design criteria may be referenced in the contract.
3.2
Procedures
3.2.1
General
This clause describes the criteria and requirements for test planning, performance, recording of
data, and reporting of test results.
3.2.2
Test Plan
A test plan shall identify the approach to be used for accomplishing each of the specified tests,
and include the projected test schedule, installation verification procedures, test execution and
acceptance criteria.
3.2.3
Failure and Retesting
Failure of equipment to meet test specifications or ratings shall be grounds for rejection of
equipment. Failed equipment shall be retested in accordance with this standard after renewal or
repair work and conforming test(s) witnessed by the authority for acceptance have been
successfully completed.
Revised drawings or diagrams shall be prepared if modifications or changes affect any drawings,
diagrams, or other documents previously submitted to and accepted by the authority. The
requirements for specified tests, performance specifications, drawings and design calculations of
the original unit shall be applicable to the new unit.
3.2.4
Test Procedures and/or Reports
Test procedures and/or reports shall include as a minimum:
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a.
Title of test(s), including equipment model and serial numbers (where applicable).
b.
Scheduled location and date of test(s).
c.
Equipment to be tested.
d.
Objective and scope of test(s).
e.
Test set-up, physical and wiring diagrams of test(s).
f.
Test equipment to be used, with manufacturer’s name and model number.
g.
Abbreviations and references used in the test(s) description.
h.
Personnel required for the test(s), including primary and supporting personnel.
i.
Estimated duration of test(s).
j.
Pass/fail criteria of each test and probable results, including calculations, curves,
photographs, and other supporting data.
k.
Samples of test(s) data sheets to be used for recording test(s) parameters and results.
l.
Step by step instructions for performing the test(s), identifying the points where data are
to be recorded and the limits for acceptable data.
m.
Instructions for recording data on data sheets or verifying that individual procedural steps
have been completed.
n.
Ambient condition limitations including temperature, altitude, barometric pressure, air
humidity, maximum available short circuit fault current from utility company, noise, and
vibration.
o.
Signature space(s) provided with printed name/title/company below on test(s) data
sheets.
p.
Company performing instrument calibration and date calibration performed.
In addition to the requirements specified above, test reports shall include accuracy and calibration
data of the test equipment used, summary and conclusions, results including calculations, curves
and photographs, descriptions of any failures and/or modifications including reasons for such
failures and/or modifications, names of individuals approving such modifications, other supporting
data, and signature(s) of test witness(s).
Revisions to the test procedures may be proposed based upon the results of the first items tested.
Modified test procedures shall be resubmitted to the authority for acceptance and shall meet the
same submittal requirements indicated herein unless waived by the authority.
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3.3
Test Equipment
Instruments and devices used quantitatively shall be within current calibration period and current
certificates shall be provided to the authority.
3.4
Substation Physical Inspection and Mechanical Operation
A physical inspection and mechanical operation shall be conducted on all substation equipment
prior to energizing the rectifier transformer. For this inspection all compartment doors/panels shall
be opened and/or removed to allow access to the equipment. During this inspection special
instructions to transit operators shall be given so that adjacent traction power substations do not
back-feed dc power on the load side of the dc feeder breakers. The isolated dc sections shall be
properly grounded, and/or the appropriate dc feeder breaker(s) shall be opened, locked and
tagged. Likewise ac primary power switch(es) outside the traction power substation shall be
opened, locked and tagged to electrically isolate the substation under test from all sources of ac
and dc power. The purpose of performing this inspection/operation is to verify all equipment is
properly secured, bolted connections are tightened within torque specifications, bus bars and/or
cables are adequately supported, grounding and testing devices function properly, insulation
levels are not compromised, no undesirable material and/or tools have been inadvertently left
inside the equipment, protective and safety/security equipment are operational, battery cases are
not cracked or leaking, and safety labels are affixed.
3.5
Electrical Insulation Tests
The following electrical insulation tests shall be performed prior to energizing the rectifier
transformer, control power circuits, and dc feeder cables to verify that no equipment damage
occurred during delivery and installation, and the equipment is effectively grounded:
a.
Wiring insulation resistance testing.
b.
Ac and dc bus dielectric testing.
c.
Ac and dc circuit breaker dielectric testing.
d.
Rectifier transformer dielectric testing.
e.
Rectifier unit(s) dielectric testing.
f.
Insulated floor dielectric testing.
3.6
Ground Verification Test
3.6.1
General
The following tests shall be performed to verify that grounding at each substation location meets
the contract requirements. A detailed visual inspection of all bond and grounding wires shall be
conducted prior to performing the following tests:
a.
System grounding test conforming to maximum acceptable grounding resistance.
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b.
Equipment grounding/bonding test per maximum acceptable resistance value criteria.
3.6.2
Test Description
3.6.2.1. Measure the resistance of the bond wires between metallic enclosures/surge arresters
and a substation grounding system using a low resistance ohm-meter. Connect the test point
between the enclosure and the station perimeter ground, or ground bus.
3.6.2.2. Measure the resistance between the ground grid and conductors connected to the
substation ground bus using a low resistance ohm-meter. The low resistance ohm-meter shall
provide 1 micro-ohm measurement resolution.
3.6.2.3. Measure the resistance of the substation ground grid(s) in accordance with IEEE Std. 81.
3.6.3
Acceptance Criteria
Total resistance of a bond and/or ground connection shall not exceed contract requirements
(typically between 5 µΩ and 1 mΩ excluding conductor resistance) measured between an
enclosure and perimeter ground or copper bus.
The substation grounding system resistance shall not exceed contract requirements (typically 5
Ω).
3.7
Substation Functional Tests
3.7.1
General
The following tests shall be performed to verify proper operation of traction power substation
equipment.
3.7.2
Prior to Rectifier Transformer and DC Feeder Cable Energization
These tests shall be performed after the batteries reach full charge and control circuit low-voltage
services are energized, but before the traction power rectifier transformer and dc feeder cables
are energized. For safety reasons, operation of all of the protective devices and medium voltage
switchgear shall be confirmed before the feeder is energized. Relay contacts shall be blocked,
jumpers installed, or digital signals generated to simulate an energized traction power rectifier
transformer, main dc bus and dc feeders. Equipment shall be isolated and grounded according to
applicable safety standards prior to proceeding with functional tests. Timing devices shall be set in
this phase. Test procedures shall simulate the operation of each device under test by
manipulation, contact jumpering, or digital signal generation. The operation of a relay having
multiple inputs shall be confirmed from each and every input device. (i.e.: a lockout relay having
multiple inputs from various devices shall be operated from each device to confirm operation of
the lockout relay).
Test records shall provide means to document that all functions have been verified for compliance
with the control schematics, plans and specifications; and the relays and meters are calibrated.
Devices tested shall include as a minimum:
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a.
Control circuits, annunciator circuits, supervisory circuits, load measuring circuits,
emergency trip system (ETS) circuits, transfer trip circuits, and safety/security circuits.
b.
Protective relays.
c.
Metering equipment.
d.
Safety/security equipment including but not limited to smoke alarms, emergency lighting
and intrusion devices.
e.
Circuit breaker and interlock(s) operation.
f.
Station battery system and charger. The battery shall be subjected to a battery load test
in accordance with the battery manufacturer’s test procedure once the battery is fully
charged. The individual battery cell voltages shall be measured and recorded.
g.
Environmental control devices integral to the equipment. This test may be delayed until
subclause 3.7.4 if insufficient power prevents testing of these devices at this time.
h.
Grounded structure and hot structure protection. Each protected surface shall be tested
by actually applying a ground and ac and/or dc voltage to the surface.
i.
Remote monitoring and control devices. Each I/O point shall be tested using a diagnostic
computer to verify proper operation.
3.7.3
Additional Pre-Requisites Prior to Performing Energized Testing
The following tasks should be performed prior to performing energized testing:
a.
Short Circuit and Protective Device Coordination Study - completed by the authority or its
designate.
b.
Recommended equipment short circuit ratings and protective device settings implemented.
c.
Utility Provisions - reviewed and approved by the utility(s).
d.
Transfer trip scheme - tested at adjacent substations.
The following task shall be performed prior to performing energized testing:
e.
Arc Flash Hazard Analysis and equipment labeling - completed and implemented per
NFPA-70E or IEEE STD 1584 and as specified by the authority for specific application.
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3.7.4
After Rectifier Transformer and DC Feeder Breaker Energization (No Load)
The following tests shall be performed to verify proper operation of a substation after the rectifier
transformer and dc feeder breakers are energized, but before load is applied by closing the dc
feeder breakers. Test records shall provide means to document that all control functions have
been verified prior to proceeding to energized testing. Devices tested shall include as a minimum:
a.
Incoming ac power supply feeder alive device (27/47 or 27/59). The device shall be tested
by removing and restoring the feeder PT fuses.
b.
Rectifier unit polarity and voltage.
c.
Rectifier transformer tap voltage.
d.
Ac incoming power supply voltage circuit breaker (device 52) and rectifier output circuit
breaker (device 72) electrical interlocks.
e.
Voltage sensing circuits at dc switchgear.
3.7.5
After Substation Energization (Load Test)
In the final stage of traction power substation equipment functional testing the rectifier shall be
energized and the dc feeder breakers closed. Proper operation of dc and ac ammeters, dc and ac
voltmeters, and dc feeder load measuring shall be confirmed as load is applied as described
under clause 3.9. Short circuit current testing and train start testing shall be performed in
accordance with clauses 3.8 and 3.9.
3.7.6
Acceptance Criteria
All traction power substation equipment shall function as intended and as specified in the contract.
3.8
Short Circuit Test
3.8.1
General
These tests shall be performed to verify the correct selective tripping sequence of all protective
devices in the event of an applied short circuit, and to optimize adjustment of substation protective
devices. Other tests (subclause B.1) may be specified in the contract to verify proper operation of
all protective devices at adjacent substations.
3.8.2
Test Description
3.8.2.1 Close In – TPSS External Fault
With the traction power substation to be tested energized and all other substations connected to
the line segment under test de-energized and the dc feeder breakers of adjacent de-energized
substations serving the line open, and the electrical overhead contact system or third rail section
configured according to contract requirements, apply a switched connection between the positive
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and negative current collection points just outside the traction power substation where maximum
substation fault current magnitude is likely to occur. Obtain digital or analog oscillographic
recordings of current and voltage, impulse time, clearing time, and recovery voltage. For safety
reasons, remote tripping of dc feeder breakers connected to the line segment under test
shall be provided so the breaker can be tripped in the event the protective devices fail to
operate properly.
3.8.2.2
Remote Distance – TPSS External Fault
With the traction power substation to be tested energized and all other substations connected to
the line segment under test de-energized and the dc feeder breakers of adjacent de-energized
substations serving the line segment under test open, and the electrical overhead contact system
or third rail section configured according to contract requirements, apply a switched connection
between the positive and negative current collection points at the track position where the
minimum fault current magnitude supplied by the traction power substation is likely to occur.
Obtain digital or analog oscillographic recordings of current and voltage, impulse time, clearing
time, and recovery voltage. For safety reasons, remote tripping of dc feeder breakers
connected to the line segment under test shall be provided so the breaker can be tripped
in the event the protective devices fail to operate properly.
3.8.3
Acceptance Criteria
The ac and dc protective relay settings shall achieve the desired relay coordination between
protective devices, and shall operate to trip and lockout the appropriate circuit breakers without
any adverse event.
3.9
Train Starting Test
3.9.1
General
This test shall be performed to verify proper operation of the ac and dc protective devices under
the vehicle loading specified in the contract. Other tests (subclause B.2) may be specified in the
contract to verify proper performance of the vehicles..
3.9.2
Test description
With the traction power substation under test energized and all other substations normally
connected to the line segment under test de-energized and the dc feeder breakers of adjacent deenergized substations serving the line segment under test open, and the electrical overhead
contact system or third rail section configured according to contract documents, simultaneously
accelerate the maximum number of fully loaded vehicles as specified in the contract for normal
operation (loaded weight per contract) away from the energized substation. The vehicles shall
operate at maximum specified acceleration to attain the maximum permitted speed for the area
under test, and then brake to a full stop using full service brake. A high resolution chart record of
dc feeder current and dc bus voltage shall be obtained. Other measurements such as rail to
ground voltage (subclause B.3) may also be recorded by the authority to estimate the level of
stray leakage current for short time intervals. The test shall be conducted with the vehicles starting
at a location just outside the energized substation..
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3.9.3
Acceptance Criteria
Traction power substation equipment shall sustain the train currents produced with no indication
that substation protective devices have operated improperly.
3.10
Audible Sound Level Test
3.10.1 General
These tests shall be performed to verify that the sound generated from a traction power
substation does not exceed contract requirements with all substations normally connected to the
line segment under test energized, and the electrical overhead contact system or third rail section
configured according to contract requirements. During this test the maximum number of fully
loaded vehicles as specified in the contract for normal operation shall be in operation.
3.10.2 Test description
Record ambient sound level at the substation location under no-load conditions per the contract.
Simultaneously accelerate the maximum number of fully loaded vehicles permitted within an
overhead contact system or third rail section as specified in the contract for normal operation
(loaded weight per specification) away from the energized substation,. The vehicles shall operate
at maximum specified acceleration to attain the maximum permitted speed for the area under
test, and then brake to a full stop using full service brake. Record the maximum sound level while
the vehicles are accelerating.
3.10.3 Acceptance Criteria
The sound level generated by the substation under vehicle operation shall not exceed contract
specified levels.
3.11
INFRARED THERMOGRAPHIC INSPECTION /TEST (Load)
3.11.1 General
Thermographic inspection shall be performed to check for manufacturing/installation flaws after
energizing and loading the substation equipment for a sufficient time to raise the equipment
temperature to operating limits, and before short circuit tests are performed. During this test the
maximum number of fully loaded vehicles as specified in the contract requirements for normal
operation shall be in operation.
3.11.2 Acceptance Criteria
All traction power substation equipment shall function as specified in the contract with no hot
spots detected by the thermographic inspection.
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ANNEX A (Informative)
Bibliography
[A1]
IEEE/ANSI C2, NESC, National Electrical Safety Code (NESC)
[A2]
IEEE C57.12.90, Standard Test Code for Liquid-Immersed Distribution, Power, and
Regulating Transformers and Guide for Short-Circuit Testing of Distribution and Power
Transformers
[A3]
IEEE C57.12.91, Test Code for Dry-Type Distribution and Power Transformers (Revision
of IEEE Std C57.91-1981, IEEE Std C57.92-1981, and IEEE Std C57.115-1991)
[A4]
IEEE C57.18.10, Standard Practices and Requirements for Semiconductor Power
Rectifier Transformers (Revision and redesignation of ANSI/IEEE C57.18-1964)
[A5]
IEEE Std 81, Guide for Measuring Earth Resistivity, Ground Impedance, and Earth
Surface Potentials
[A6]
IEEE Std 1584, IEEE Guide for Performing Arc-Flash Hazard Calculations
[A7]
IEEE 1653.1, IEEE Standard Practices and Requirements for Semiconductor Traction
Power Rectifier Transformers
[A8]
IEEE 1653.2, Draft Standard for Uncontrolled Traction Power Rectifiers
[A9]
IEEE 1653.3, Draft Standard Wiring Practices and Requirements for Traction Power
Metal-Enclosed DC Switchgear
[A10]
NFPA 70, National Electrical Code
[A11]
NFPA 70E, Electrical Safety in the Workplace
[A12] ANSI/IEEE Std. 902, Maintenance, Operation, and Safety of Industrial and Commercial
Power Systems, Standard Techniques for High Voltage Testing
[A13] ANSI/IEEE Std. 141, IEEE Recommended Practice for Electrical Power Distribution for
Industrial Plants
[A14] ANSI/IEEE Std. 142, IEEE Recommended Practice for Grounding of Industrial and
Commercial Power Systems
[A15] IEEE Std. 242, IEEE Recommended Practice for Protection and Coordination of Industrial
and Commercial Power Systems Plants
[A16] J.E .Bowen, M.W Wactor, G.H Miller and M. Capelli-Schellpfeffer, “Catch the Wave”,
IEEE Ind. Appl, Mag.,Vol 10, PP 59-67, Jul-Aug, 2004
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[A17]
Electrical Safety-Related Work Practices, OSHA 29 CFR 1910 1910.331-335
[A18]
Subpart1, Personal Protective Equipment, OSHA 29 CFR 1910,1910.132
[A19] “Design Aspects of Industrial Distribution Systems to Limit Arc Flash Hazard”, J.C.Das,
IEEE Transactions on Ind. Appl, vol.41, No.6, Nov/Dec, 2005
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ANNEX B (Informative)
B.1
Short Circuit Test
B.1.1
General
This test may be specified to verify the correct selective tripping sequence of all protective devices
in multiple substations service a single line segment in the event of an applied short circuit, and to
optimize adjustment of substation protective devices.
B.1.2
Test Description
With all traction power substations normally connected to the segment under test energized, and
the electrical overhead contact system or third rail section configured so that adjacent substations
are electrically interconnected (jumper placed across air gap separating adjacent substations),
apply a switched connection between the positive and negative current collection points at the
track position located midway between two adjacent substations. Obtain digital or analog
oscillographic recordings of current and voltage, impulse time, clearing time, and recovery
voltage. For safety reasons, remote tripping of dc feeder breakers in all energized
substations connected to the line segment under test shall be provided so breakers can be
tripped in the event protective devices fail to operate properly.
B.1.3
Acceptance Criteria
The ac and dc protective relay settings of all energized traction power substations connected to
the line segment under test shall achieve the desired relay coordination between protective
devices, and shall operate to trip and lockout the appropriate circuit breakers without any adverse
event.
B.2
Train Starting Test
B.2.1
General
These tests may be specified in the contract to verify proper operation of the substation ac and dc
protective devices, and the performance of the vehicles under test.
B.2.2
Test description
With all traction power substations normally connected to the line segment under test energized,
and all other substations normally connected to the segment under test de-energized, and the
electrical overhead contact system or third rail section configured according to contract
documents, simultaneously accelerate the maximum number of fully loaded vehicles as specified
in the contract documents for normal operation (loaded weight per specification) toward the
substation under test. The vehicles shall operate at maximum specified acceleration to attain the
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maximum permitted speed for the area under test, and then brake to a full stop using full service
brake. A high resolution chart record of dc feeder current, dc bus voltage and vehicle line voltage
shall be obtained. Other measurements such as rail to ground voltage may also be recorded by
the authority for the purpose of estimating hazardous contact voltage at the vehicle surface during
train starting as well as allowing the authority to estimate the level of stray leakage current for
short time intervals. The test shall be conducted with the vehicles starting at a location furthest
from the substation under test which would produce the lowest line voltage. The test shall be
repeated with the train loading specified in the contract for contingency operation, with one
substation energized and all other substations de-energized. The vehicles shall be located at a
point furthest from the energized substation which would produce the lowest line voltage. All other
parameters of the second test shall be identical to those stated in the first test (normal operation).
B.2.3
Acceptance Criteria
Traction power substation equipment shall sustain the train currents produced with no indication
that substation protective devices have operated improperly, and the train performance shall be
within manufacturer specified limits.
B.3
Stray Current Structure-to-Earth Voltage Test
B.3.1
General
These tests may be specified in the contract to verify that adjacent structures located in a
predetermined influence area of the dc traction power system experience structure-to-earth
potential variations within predefined limits.
B.3.2
Description
These tests shall be conducted in accordance with IEC 62128-2, Railway Applications – Fixed
Installations.
B.3.3
Acceptance Criteria
DC traction power system operation shall not cause unacceptable loss of the cathodic protection,
or cause overprotection on the structure under test as established by the criteria in NACE
RP0169-02 and ANSI/NACE RP0502. The criteria for non-cathodically protected structures has to
be individually determined by the authority for each structure within the zone of influence of the
negative return system.
B.4
Running Rail - to - Earth Resistance Test
B.4.1
General
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IEEE P1653.4/D1, November 2009
These tests may be specified in the contract to verify that the negative return rail (track) to earth
resistance is not less than the contract-specified value. These tests shall be conducted after track
work completion, which forms the return path for train operating current.
B.4.2 Description
Theses tests shall be conducted in accordance with ASTM G 165-2005 - Standard Practice for
Determining Rail-to-Earth Resistance.
B.4.3 Acceptance Criteria
Acceptance shall be based on the evaluation of what is reasonable for the specified construction
(100 Ω per 1000 feet of track, 2 rails in parallel, is used by some authorities).
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Copyright (C) 2009 IEEE. All rights reserved.
This is an unapproved IEEE Standards Draft, subject to change.