EDKR(AT)250S2 BP
Asynchronous EDKR motors(AT)250S4 VR(AND) designed to work from an alternating current network with a frequency 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 stationary machines and mechanisms (pumps, fans, compressors), 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.
Operation of engines in S2 mode is allowed, S3, S4 and S6, 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 - IM1081(V3), IM2081(V5) (flanged), IM3081(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 | 75 | |
| Rotational frequency, rpm | 1480 | |
| Nominal voltage, AT | 380/660 | 660/1140 |
| Nominal current, A | 140/81 | 81/47 |
| efficiency, % | 93,7 | |
| Power factor, cosφ | 0,88 | |
| Nominal moment, Nm | 484 | |
| Mpusk/Mnom | 2,5 | |
| Mmah/Mnom | 2,8 | |
| Admission/Inom | 7,5 | |
| Insulation class | N | |
| Mass, kg | 670 | |
OVERALL AND CONNECTING DIMENSIONS OF THE EDCR ENGINE(AT)250S4 VR(AND)
