Series and parameters of electric control equipments for boom roadheaders
1 Scope
This standard specifies the classification and technical parameters of electric control equipment for boom roadheaders.
This standard applicable to the electric control equipment for boom roadheaders (hereinafter referred to as electric control equipment).
2 Normative references
The following standards and documents contain provisions which, through reference in this text, constitute provisions of this document. At time of publication, the editions indicated were valid. All standards and documents are subject to revision, and parties to agreements based on this document are encouraged to investigate the possibility of applying the most recent editions of the standards and documents indicated below.
GB 3836.1-83 Electrical apparatus for explosive atmospheres - General requirements
GB 3836.2-83 Electrical apparatus for explosive atmospheres - Flameproof electrical apparatus d
GB 3836.3-83 Electrical apparatus for explosive atmospheres - Increased safety electrical apparatus e
GB 3836.4-83 Electrical apparatus for explosive atmospheres - Intrinsically safe circuits and electrical apparatus i
GB/T 14048.1-93 Low-voltage switchgear and controlgear - General rules
MT 154.2-1996 The model designation of electromechanical product for coal mine
MT 209-90 General technical requirements - Electrical and electronic products for communication, detection and control in coal mines
MT 210-90 Basic testing methods for electric and electronic products used for communication, inspection and control of coal mine
MT 238-91 Boom-type roadheader - General technical condition
3 Symbols and codes
3.1 Symbols
The main symbols used in this standard are as follows:
a) Ue: Rated operating voltage;
b) Ui: Rated insulation voltage;
c) Ie: Rated operating current;
d) cosφ: Power factor.
3.2 Codes
The type codes used in this standard are as follows:
a) AC-3 AC squirrel-cage induction motors: starting, switching off motors during running;
b) AC-4 AC squirrel-cage induction motors: starting, plugging, inching
4 Classification and designation
Foreword II
1 Scope
2 Normative references
3 Symbols and codes
4 Classification and designation
5 Technical parameters
Annex A (Normative) Test methods
