Series DH/GH DC Motors
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Series DH/GH DC Motors A EMG■EMCO General information The direct current machines manufactured by EMG - EMCO in the plant of Monfalcone represent the highest quality level available today for this product. This result is achieved by using the most modem FEM based design criteria, along with selected materials and advanced technology. These machines provide excellent performance and commutation characteristics over a very wide range of speeds. In addition, their modular structure provides flexibility and adaptability to specific application requirements and permits easy handling, installation and maintenance. The laminated frame motor series covers a large of power outputs, from 2 kW to about 5000 kW. It foresees 22 different shaft centre heights -from 80 mm to 1120 mm each of which is available in several frame lenghts. These motors have been carefully designed to guarantee perfect operation even when supplied by static converters. Cooling methods Direct current machines are usually cooled by a top mounted blower unit, fitted with a filtre (IC 06 according to IEC). Upon request, the machines may be supplied either with an air-to-water heat exchanger (IC 86 W) or with separate ventilation from air ducts (IC 37), with the same ratings listed in the catalogue. All machines are also available, after derating the power output, with an air-to-air heat exchanger (IC 666). Smaller sizes can also be supplied totally enclosed not ventilated (IC 410). High power machines The machines in this power range cover ratings from 350 kW to 5000 kW on the following shaft heights: 500, 560, 630, 710, 800, 900 and 1120 mm. They represent the best solution to satisfy the variable speed applications of the largest and most important industrial processes. These machines are designed for supply voltage in the range 400 V to 1000 V from static converters. Sizes 500, 560 and 630 have 6 poles, sizes 710, 800, 900 have 8 poles while size 1120 is 10 pole design. All machines are provided with compensating windings and they can therefore successful operate in any heavyduty application. Medium power machines The machines in this power range cover ratings from 30 kW to 1100 kW on the following shaft heights: 200, 225, 250, 280, 315, 400 e 450 mm. Their main characteristic consists in a lower maximum speed. In particular, they are suitable to operate in a large speed range at constant power, also at a very low base speed. Standard supply voltages are 220 V up to 400 V from static converter. All sizes have 4 poles. Size 250, 280, 315, 355, 400 and 450 machines are provided with The Elediic Matas and Generator Business Unit is cettified

Power rating: 2 - 6,000 kW (at 150 r/min in tandem) Voltage: up to 1,000 V Type of cooling: Main features • Fully laminated stator High commutating capacity during current transients • High-speed response • High efficiency Design and performance in compliance with IEC Standard Dynamic balancing in compliance with ISO 1940 Standard and IEC Standard • Noise level according to IEC Standard High material and component reliability Bearings especially designed for heavy-duty service All machines equipped with constant pressure radial brush holders, v_ compensating windings as a standard, while...