MT/T 478-2011YBS series flameproof three phases asynchronous motor for conveyer (English PDF)

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard replaces MT 478-1996, YBS series flameproof three phases

asynchronous motor for conveyer; and compared with MT 478-1996, the main

technical changes of this Standard are as follows.

-- it changes the compulsory standard into a voluntary standard;

-- it extends the application scope of the standard, i.e. from flameproof three phases

asynchronous motor for scraper conveyor to special flameproof three phases

asynchronous motor for scraper and belt conveyers (see the standard name and

Chapter 1; the standard name of Edition 1996 and Chapter 1);

-- it improves the enclosure protection class from IP54 to IP55 (see 3.1.2; 3.3 of

Edition 1996);

-- it increases the application scope of maximum power from 500 kW to 1 000 kW

(see 3.2.4; 3.9 of Edition 1996);

-- it improves the voltage to 3 300 V (see 3.2.3; 3.10 of Edition 1996);

-- it cancels the no-load hour breaking frequency test (see 4.8 of Edition 1996);

-- it cancels the continuous inching test (see 4.15 of Edition 1996); and

-- it adds the 1.5 times accidental over current test (see 4.12).

This Standard was proposed by China National Coal Association.

This Standard shall be under the jurisdiction of the Standardization Technical

Committee on Special Equipment for Coal Mines and Coal Industry.

The responsible drafting organizations of this Standard. China Coal Research Institute

Shanghai Branch and Shanxi Explosion-proof Motor (Group) Co., Ltd.

The participating drafting organizations of this Standard. Fushun Coal Mine Motor

Manufacturing Co., Ltd., Henan Anyang Hua'an Coal Mine Motor Co., Ltd., Ningxia

Northwest Junma Electric Manfacturing Co., Ltd. and Fenyi Coal Mine Motor Co., Ltd.

1 Scope

This Standard specifies the type, basic parameters, dimensions and tolerances,

technical requirements, test methods, inspection rules and marking, packaging,

transportation and storage of YBS series flameproof three phases asynchronous motor

for conveyer.

This Standard applies to flameproof three phases asynchronous motor for scraper

conveyer, scraper loader and belt conveyer for coal mines (hereinafter referred to as

motor); this Standard can also be referred to for other derived all types of motors.

2 Normative References

The following referenced documents are indispensable for the application of this

document. For dated references, only the edition dated applies to this document. For

undated references, the latest edition of the referenced document (including all

amendments) applies to this Standard.

GB/T 191-2008, Packaging – Pictorial marking for handling of goods

GB 755-2008, Rotating electrical machines – Rating and performance

GB/T 997-2008, Rotating electrical machines – Classification of types of

construction, mounting arrangements and terminal box position (IM code)

GB/T 1032-2005, Test procedures for three-phase induction motors

GB/T 1993-1993, Cooling methods for rotating electrical machines

GB/T 2423.4-2008, Environmental testing for electric and electronic products – Part

2 Test method – Test Db. Damp heat, cyclic (12h+12h cycle)

GB 3836.1-2000, Electrical apparatus for explosive gas atmospheres – Part 1.

General requirements

GB 3836.2-2000, Electrical apparatus for explosive gas atmospheres – Part 2.

Flameproof enclosure d

GB 3836.3-2000, Electrical apparatus for explosive gas atmospheres – Part 3.

Increased safety

GB/T 4942.1-2006, Degrees of protection provided by the integral design of rotating

electrical machined (IP code) – Classification

GB 10068-2008, Mechanical vibration of certain machines with shaft heights 56 mm

and higher-measurement evaluation and limits of vibration severity

GB/T 10069.1-2006, Measurement of airborne noise emitted by rotating electrical

machines and the noise limits – Part 1. Method for the measurement of airborne

noise emitted by rotating electrical machines

GB/T 10111-2008, Generation of random numbers and procedures applied to

sampling inspection for product quality

AQ 1043-2007, Mining products safety label

JB/T 9615.1-2000, Test methods of the interturn insulation on random wound

winding for AC low-voltage machines

JB/T 9615.2-2000, Test limits of the interturn insulation on random wound winding

for AC low-voltage machines

JB/T 10098-2000, Impulse voltage withstand levels of rotating AC machines with

form-wound stator coils

3 Type, basic parameters, dimensions and tolerances

800 to 1

000

Cooling water flow rate

m3/h 1.2 1.5 1.8 2.1 2.3 2.5 2.7