SIEMENS_Standards for MV-Switchgear IEC 62271-100.pdf

8/10/2019 SIEMENS_Standards for MV-Switchgear IEC 62271-100.pdf

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Siemens AG 2014 All rights reserved.

IEC 62271 Series

Standards for MV-SwitchgearIEC 62271-1 High-voltage swi tchgear and controlgear Part 1: Common specifications

Olaf BischurSiemens AG

IC LMV MS R&D GIS TD 1PG


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Slide 2 Olaf Bischur Sector Infrastructure & Cities, Medium Voltage

Topics

1. Standards Group IEC 62271

2. Common Specifications IEC 62271-1

3. Outlook of IEC 62271-1

4. Extension of validity of type tests IEC 62271-307


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Structure of the group IEC 62271

IEC 62271 HV Switchgear and Controlgear

Part 1 99 Generic standards

Part 100 199 Switching Devices

Part 300 399 Guidelines, reports etc.

Part 200 299 Switchgear installations

Responsible

IEC committee

SC 17A / 17C

SC 17A

SC 17C

SC 17A / 17C


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Topics






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IEC 62271-1, Overview (1)

This part of IEC 62271 applies to a.c. switchgear and

controlgear designed for indoor and outdoor installation

and for operation at service frequencies up to and

including 60 Hz on systems having voltages above 1 000 V.

This standard defines common requirements about general conditions

(e. g. indoor, outdoor, temperature and humidity, etc.) Terms and definition (e. g. wording incl. cross reference to

IEV international electrotechnical vocabulary)

Ratings (e. g. scientific notation, values, etc.)

Design and construction

(e. g. requirements for liquids, gas, earthing, enclosure, etc.)

Type and routine tests (general kinds, valid for all switchgear and controlgear)

Information to be given with enquiries, tenders and orders


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IEC 62271-1, Overview (2)

This standard gives information about common terms.

Out of scope of this standard are requirements

of certain design solutions e. g.

- Internal arcing test

e. g. IEC 62271-200

- Mechanical operation tests of switching devices

e. g. IEC 62271-100, -200

- Pressure withstand test for gas-filled compartments

e. g. IEC 62271-200

- Making and breaking capability of switching devices

e. g. IEC 62271-100

- Mechanical endurance tests of switching devices

e. g. IEC 62271-100, -102


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IEC 62271-1, Overview clauses

1. General

2. Normal and special service conditions

3. Terms and definitions

4. Ratings

5. Design and construction

6. Type tests

7. Routine tests8. Guide to the selection of switchgear

and controlgear

9. Information to be given with enquiries,

tenders and orders

10.Transport, storage, installation,

operation and maintenance

11.Safety

12.Influence of the product on the environment


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IEC 62271-1, Overview type tests

1. General

2. Dielectric tests

3. Radio interference voltage (r.i.v.) test

4. Measurement of the resistance of circuits

5. Temperature-rise tests

6. Short-time withstand current and peak withstand

current tests7. Verification of the protection

8. Tightness tests

9. Electromagnetic compatibility tests (EMC)

10.Additional tests on auxiliary and control circuits

11.X-radiation test procedure for vacuum interrupters


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IEC 62271-1, details type tests,

General (1)

Clause 6.1: General

The type tests shall be made on representative functional units.

Because of the variety of types, ratings and possible combinations of

components, it is not practicable to make type tests with all the arrangements

of metal-enclosed switchgear and controlgear.

(see also IEC 62271-200, clause 6.1)

This clause gives information about

Grouping of tests

Information for identification of

specimens (drawings, part-lists, )

Information to be included in

type-test reports


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General (2)

Clause 6.1: Information to be included in type-test reports

Manufacturer

Type designation and serial number

Rated characteristics

General description of the test object

Manufacturer, type, serial numbers and ratings of essential parts

General details of the supporting structure

Details of the operating-mechanism

Photographs to illustrate the condition before and after test

Sufficient outline drawings and data schedules

Reference numbers of all drawings to identify the essential parts

Details of the testing arrangements

Records of the test quantities


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dielectric tests

Clause 6.2: Dielectric tests


Ambient air conditions during tests (humidity, )

Condition of the test specimen

Criteria to pass the test

Application of the test voltage and test conditions

Kind of tests (Power-frequency, Lightning impulse,Switching impulse, Partial discharge,

tests on auxiliary and control circuits)

with criteria to past the tests


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r.i.v. test

Clause 6.3: Radio interference voltage (r.i.v.) test

This test applies only to switchgear and controlgear having rated voltages

of 123 kV and above.

For medium voltage switchgear and controlgear the r.i.v. effects are of a low

level and are negligible.


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measurement of the resistance

Clause 6.4: Measurement of the resistance of circuits

Not a stand alone type test.

A measurement of the resistance of the main circuit shall be made for

comparison between the switchgear and controlgear type tested for temperature

rise and all other switchgear and controlgear of the same type subjected to

routine tests (see routine test clause 7.3).

Also to perform before and after short-time withstand current and peak withstandcurrent tests and making and breaking capability tests as a condition check.

100 A current source


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temperature-rise tests

Clause 6.5: Temperature-rise tests


Condition of the test specimen

Condition of the testing area (e. g. max. wind speed, ) External connection to the test specimen

(incoming, short-circuit link)

Kind of measurement of the temperature and temperature-rise

Interpretation of the temperature-rise tests

Definition end of test (normal after five times the thermal time constant)

More details about number of phases to be tested, value of test current, transfer

of results to other frequencies as tested, preheating the circuit with a higher

value of current to save testing time,


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short-time withstand current and

peak withstand current test

Clause 6.6: Short-time withstand current and peak withstand current

Similar to the test before with

Condition of the test specimen and test current

(e. g. three-phase or single-phase test)

Test current and test duration

Behavior of the test specimen during test Condition of the test specimen after test


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verification of the protection

Clause 6.7: Verification of the protection

Tests only necessary in case of doubt

Verification of the IP coding in accordance with IEC 60529

(test with an access / object probe or water)

Verification of the IK coding in accordance with IEC 62262

(test with a hammer / ball)


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Tightness tests

Clause 6.8: Tightness tests

Will be performed typically before and after the mechanical operation test

or during the operation tests at extreme temperatures.

Three kinds of systems:

Controlled pressure systems for gas (not longer state of the art)

Closed pressure systems for gas Sealed pressure systems


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Electromagnetic compatibil ity tests (EMC)

Clause 6.9: Electromagnetic compatibi li ty tests (EMC)

Emission tests from the main circuits (radio interference voltage test, r.i.v.)

not necessary because the r.i.v. effects are of a low level and are negligible;

see clause 6.3.

Two topics in this clause:

Emission tests from the auxiliary and

control circuits

Immunity tests on auxiliary and

control circuits (electrical fast transient /burst, oscillatory wave immunity)


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Additional tests on auxiliary and control circuits

Clause 6.10: Additional tests on auxiliary and control circuits

Tests to qualify the whole assembly without repeating individual tests on

components.

Functional tests to verify the proper functioning of auxiliary and control circuits

Electrical continuity of earthed metallic parts test Verification of the operational characteristics of auxiliary contacts

(unless the equipment has passed the whole type tests as a functional unit)

Environmental tests

Dielectric test (2 kV / 1 min.)


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X-radiation test procedure for vacuum interrupters

Clause 6.11: X-radiation test procedure for vacuum interrupters

The purpose of this type test is to verify that the X-radiation emitted from vacuum

interrupters does not exceed specified limits.

Clauses imply:

Mounting of specimen for testing

Radiation instrument to verify the X-radiation

Location of radiation instrument

Test voltage and measurement procedure


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Topics






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IEC 62271-1, outlook

Future trend; no major technical changes

Including of UHV (ultra high voltage)

EMC: in relation with Guide 107 and Cenelec request

Harmonization of content with IEEE C37.100.1

Check of definitions and references

Modification of chapter 4.4, new headline: "Rated continuous current

instead of rated normal current

Including new annex Extension of validity of type tests


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Topics






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IEC 62271-307: Extension of validity of type tests

- Because of the variety of types, it is not practicable to make type tests with

all the arrangements of metal-enclosed switchgear and controlgear (see also

IEC 62271-200, clause 6.1).

- IEC 62271-307: Guidance for the

extension of validity of type tests

- Responsible for the transfer

of test results is the manufacturer


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S O f S f & C

IEC 62271-1

Thank you for your attention

SIEMENS_Standards for MV-Switchgear IEC 62271-100.pdf

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