Series 2AIMM280-355, 2AIU280-355

Explosion-proof asynchronous electric motors 2АИММ with a squirrel-cage rotor are designed for continuous operation from an alternating current frequency 50 and 60 Hz voltage 220/380 In and 380/660 In explosive chemical industries, gas, oil refining and other related industries, in which the formation of explosive vapors is possible- and gas-air mixtures of category IIA, IIB groups T1, T2, T3, T4.
Explosion-proof asynchronous electric motors 2AIU with a squirrel-cage rotor are designed for continuous operation from an alternating current of frequency 50 and 60 Hz voltage 380/660 In and 660/1140 In underground and aboveground workings of coal mines and mines, hazardous for methane and coal dust.
Motors 2AIU280-355 can be manufactured with a device for signaling vibration velocity and temperature USVT TU U31.6-32832237-009:2007.
USVT provides signaling of the temperature of the outer surface of the engine shell, stator winding temperature, bearing unit temperatures, vibration of bearing assemblies.
Execution of electric motors according to the installation method IM1001 (on paws), IM2001 (flange, paws), IM3011 (flange) in accordance with GOST 2479 and IEC 60034-7. By agreement between the manufacturer and the consumer, electric motors are also manufactured with other versions according to the installation method in accordance with GOST 2479 and IEC 60034-7 .
Electric motors are manufactured according to two options for linking power to installation and connection dimensions:
2AIMM315, 2AIMM355;, 2AIU315 S,M , 2AIU355 S,M – with connection of power to installation and connection dimensions in accordance with GOST R 51689-2000.
2AIMM280MX,MY;, 2AIMM315 MX,MY;, 2AIU280 MX,MY ;, 2AIU315 MX,MY – with a decrease in the height of the axis of rotation by one step.
Reversible motors.
Direct start of electric motors, provided as at nominal mains voltage, and when the mains voltage drops during the start-up time to 0,8 Unom.
Explosion protection marking :
2AIMM – 1ExdIIBT4
2AIU – RV-3V (RV Exd1).
Climatic version: U2.5, T2.5, UHL2.5.
Degree of protection of the case and terminal box: IP 54.
Cooling method: IC0141
Insulation heat resistance class: H (180º C).

Technical characteristics of motors for a current frequency of 50Hz are given in table. 1.
Mounting and connecting dimensions of motors are given in the table 2 and in rice. 1.

The structure of the USVT symbol when ordering:
USVT – Xxx – X x x x x x

An example of a record of the USHT designation with a supply voltage 36 V, measuring vibration velocity for the engine and mechanism, the presence of sensors for measuring the temperature of the bearings for the engine, mechanism, engine body, motor stator winding, climatic version U2, when ordering and in the documentation of another product:
«USVT-36V-4411 U2 device, TU U 31.6-32832237-009:2007»

An example of recording the designation of the engine 2AIU315M10U2.5, type of climatic modification U2, 5, power 110 kw, tension 380/660 V, network frequency 50 Hz, explosion protection PB ExdI, , complete with USVT-36V-4411U2 , when ordering and in the documentation of another product:
«Engine 2АИУ315М10У2,5, 380/660 V, 50Hz, RV ExdI, TU U 31.1-32832237-012:2009 with USVT-36V-4411U2, TU U 31.1-32832237-009:2009».

Tables with characteristics and figures are given in the attached file

Download those. specifications, overall and mounting dimensions: