Engines EDKRV250M4

EDKRV250M4 asynchronous motors are designed to operate from an alternating current network with a frequency of 50 Hz with isolated neutral of coal mines and mines, dangerous due to the content of mine gas (methane) and (or) coal dust as a drive for mine scraper and belt conveyors, mechanized fasteners, loaders and combine harvesters, as well as drives of other mechanisms and machines with similar modes of operation. Nominal values ​​of the main engine parameters in the S1 mode according to DSTU IES 60034-1 are given in the table.

The stator winding can be made of a rigid copper busbar, rotor – aluminum or copper-brass casting.

It is allowed to operate engines in mode S2 = 60 min, S3, S4 – 60% with the inertia factor F = 2 and frequency of inclusions to 30 included per hour, at the same time, the permissible power value is no more, specified for mode S1.

Explosion protection level of engines "explosion-proof" with types of explosion protection "explosion-proof shell" and "intrinsically safe electrical circuit" RV Ex d b I Mb:

Degree of protection of motors and input boxes IR55, external fan IR20 according to GOST 17494.2.6 (Jesus 60529).

Type of climatic execution of engines – U2.5;

Execution of engines according to the method of installation - IM1001, IM4001(V5) (flanged), IM9701(V35) (foot/flange) according to GOST 2479.

Method of cooling engines – Jesus 0141 according to GOST 20459.

 

MAIN TECHNICAL INDICATORS

Engine parameters Value
Capacity, kW 55
Rotational frequency, rpm 1480
Nominal voltage, AT 660/1140
Nominal current, A 59,4/34,3
efficiency, % 93
Power factor, cosφ 0,87
Mpusk/Mnom 2,4
Mmah/Mnom 2,8
Admission/Inom 6,6
Insulation class N
Mass, kg 540

OVERALL AND CONNECTING DIMENSIONS OF THE EDKRV250M4 ENGINE