GB/T 12975-2021General specification for synchronous generator in ships (English PDF)

Foreword

This standard is in accordance with GB/T 1.1-2009 The rules given are drafted.

This standard replaces GB/T 12975-2008 "General Technical Requirements for Marine Synchronous Generators". With GB/T Compared with 12975-2008, except The main technical changes besides editorial changes are as follows.

---Modified the content of the outlet location requirements (see 4.4.13, 4.4.13 in the 2008 edition);

---Modified the content of voltage regulation rate, waveform distortion and temperature rise requirements (see 4.5.3, 4.5.4, 4.5.5 and 4.5.15.1, 2008 Version 4.5.3, 4.5.4, 4.5.5 and 4.5.15.1);

---Modified the requirements of insulation resistance and inter-turn impulse withstand voltage (see 4.5.16, 4.5.18, 4.5.16, 4.5.18);

---Added the requirements and test methods for impulse withstand voltage to ground (see 4.5.19, 5.18);

---Modified the requirements for moisture resistance and salt spray resistance (see 4.5.23, 4.5.24, 4.5.22, 4.5.24 in the 2008 edition);

--- Deleted the anti-mold performance and related test requirements (see the 2008 version of 4.5.23, 5.21);

---Modified the content of vibration intensity limit and vibration resistance requirements (see 4.5.27 and 4.5.30, 4.5.27 and 4.5.30);

---Modified the test frequency range of radiated emission from the shell port of the automatic voltage regulator (see 4.5.29.2, 2008 edition 4.5.29.2);

---The concentration of sulfur dioxide in the chemical gas corrosion test has been increased (see 5.23).

This standard was proposed and managed by the China Electrical Equipment Industry Association.

The organization responsible for drafting this standard. Shanghai Institute of Electrical Apparatus, Shanghai Institute of Electrical Apparatus (Group) Co., Ltd., China Classification Society Maritime Code Research Institute, China Classification Society Shanghai Branch, Lanzhou Electric Co., Ltd., Shanghai Marathon.Gexin Electric Co., Ltd., Jiangxi Qing Huatai Hao Sanbo Motor Co., Ltd., Kangfu Technology Co., Ltd.

1 Scope

This standard specifies the rated power 3 kVA (50 Hz and 60 Hz) and below marine synchronous generators (hereinafter referred to as generators) and The technical requirements, test methods, inspection rules, classification, marking and packaging of the excitation device.

This standard applies to generators and their excitation devices that are driven by internal combustion engines and used as ships and mobile and fixed offshore power stations.

This standard covers generators driven by steam turbines, shaft generators and rated power greater than 3 kVA generator, also refer to use.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 191-2008 Packaging, storage and transportation pictorial signs

GB/T 755-2019 Rotating motor rating and performance

GB/T 997-2008 Classification of structure type, installation type and junction box position of rotating electric machine (IM code)

GB/T 1029-2005 Three-phase synchronous motor test method

GB/T 1958-2017 Product Geometric Technical Specification (GPS) Geometric Tolerance Testing and Verification

GB/T 1971-2006 Rotating motor terminal mark and direction of rotation

GB/T 1993-1993 Rotating electric machine cooling method

GB/T 2423.4-2008 Environmental testing of electrical and electronic products Part 2: Test method Test Db. Alternating damp heat (12 h loop)

GB/T 2423.17-2008 Environmental testing of electric and electronic products Part 2: Test method Test Ka. Salt spray

GB/T 2423.33-2005 Environmental testing of electric and electronic products Part 2: Test method Test Kca. High concentration dioxide Sulfur test

GB/T 2900.25 Electrotechnical terminology rotating electric machine

GB/T 4772.1-1999 Rotating electrical machinery dimensions and output power levels Part 1: Frame size 56~400 and flange number 55~1080

GB/T 4772.2-1999 Rotating electrical machinery size and output power level Part 2: Frame size 355~1000 and flange number 1180~2360

GB/T 4831-2016 Rotating electric machine product model compilation method

GB/T 4942.1-2006 Degree of protection of the overall structure of rotating electrical machines (IP code) Classification

GB/T 6113.101-2016 Radio disturbance and immunity measurement equipment and measurement method specification Part 1-1: Radio disturbance Interference and immunity measuring equipment measuring equipment

GB/T 6113.102-2018 Specification for Radio Disturbance and Immunity Measurement Equipment and Measurement Methods Part 1-2: Radio Disturbance Coupling device for conducting disturbance measurement of disturbance and immunity measuring equipment

GB/T 6113.103-2008 Radio disturbance and immunity measurement equipment and measurement method specification Part 1-3: Radio disturbance Disturbance and immunity measurement equipment auxiliary equipment disturbance power