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GB/T 34665-2017Measurement method of dielectric dissipation factor of electric machinery coil/winding insulation (English PDF)

电机线圈/绕组绝缘介质损耗因数测量方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 1, 2017

Implementation date

May 1, 2018

Scope

GB/T 34665-2017 is the English-translated version of 电机线圈/绕组绝缘介质损耗因数测量方法.

GB/T 34665-2017 is the Chinese standard "Measurement method of dielectric dissipation factor of electric machinery coil/winding insulation". Its scope clause reads: This standard specifies the measurement method of motor winding/winding dielectric loss factor and its increment.

This standard applies to different rated voltage level of the rotating motor stator forming coil/winding, such as the rated voltage level of 6kV and above Of the motor, but also for single-stator coil in the core (that is, before and after the next line) and stator winding dielectric loss factor and its incremental measurement.

This standard applies to the completion of the insulation curing coil/winding, does not apply to uncured coils and windings. Its clauses include terms and definitions.

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Document preview — GB/T 34665-2017

National Standard of the People's Republic of China

ICS: 29.080.30
Classification: K 15

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and definitions
3.1 Capacitance
3.2 Dielectric dissipation factor
3.3 Dielectric loss factor incrementally incremental dielectric pressure factor factor

1 Scope

This standard specifies the measurement method of motor winding/winding dielectric loss factor and its increment.

This standard applies to different rated voltage level of the rotating motor stator forming coil/winding, such as the rated voltage level of 6kV and above

Of the motor, but also for single-stator coil in the core (that is, before and after the next line) and stator winding dielectric loss factor and its incremental measurement.

This standard applies to the completion of the insulation curing coil/winding, does not apply to uncured coils and windings.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 7354 partial discharge measurement

GB/T 16927.1 high voltage test techniques - Part 1. General definitions and test requirements

GB/T 16927.2 high voltage test techniques - Part 2. Measurement system

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Capacitance

Conductors and dielectric devices can store charge characteristics when there is a potential difference between the conductors.

Note 1. C is the ratio between the charge quantity q and the potential difference U, see Eq. (1). The capacitance value is always positive, when the charge and potential difference units are Coulomb

And volts, the capacitance unit is Farah.

C = (1)

Note 2. See GB/T 31838.1-2015 3.4.

3.2 Dielectric dissipation factor

tan delta

The absolute value of the ratio of the imaginary part to the real part of the complex relative permittivity is given by Eq. (2).

tan delta =

epsilon "r

epsilon'r (2)

Note See 3.3.4 of GB/T 31838.1-2015.

3.3 Dielectric loss factor incrementally incremental dielectric pressure factor factor

deltatan delta […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Cited by

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