MANUFACTURE OF ELECTRIC MOTORS IN HUNGARY

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600370277-4
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: September 27, 2011
• Sequence Number: 277
• Publication Date: January 10, 1951
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/09/27: CIA-RDP80-00809A000600370277-4
S
CLASSIFICATION CONFIDENTIAL ?j~Il~~?~~~~~~ o
50X1-HUM
CENTRAL INTELLIGENCE AGENCY REPOR
INFORMATION FROM
FOFEIGN DOCUMENTS 'OR RADIO BROADCASTS CD NO.
SUBJECT Economic - Electric motor industry
HOW
PUBLISHED Monthly periodical
WHERE
PUBLISHED Budapest
DATE
PUBLISHED Aug 1950
OF STHEOUNITED STATES WIn"IIII I HIINATOO 1U0110 00 ONATIONAL DACCTT"e0
S. 0.. 1~ AP' St. A7 *010000. ITS YEARSl15,10l 011 TNl 1[0[LATION
ITS CO idS IM AM7 0A0 Nt0 70 AN UOAUTNOOI101 PINION IS 00001T[D SY' LAW. 011,10 0 0 0 710 0 ,01 7X17 1000 IS PAONIDITIID.
SOURCE Magyar Technika.
DATE OF
INFORMATION 1950
DATE DIST. 10 'Jan 1951
NO. OF PAGES 2
.UPPLEMENT TO
REPORT NO.
THIS IS UNEVALUATED INFORMATION
MANUFACTURE OF ELECTRIC MOTORS IN HUNGARY
During the past 5 years, the Hungarian electric motor manufacturing, indus-
try has developed many new types of motors, motor type-series, and new fields
of application for old types of electrical motors.
After the war, because of the destruction of much of the Ganz Works,, the
Matyas Rakosi Works began manufacturing small elect3Ic motors to satisfy its own
needs. The special feature of this series was that it had a permanent cast alum-
inum housing. These models were even exported in large numbers., but?their'manu-
facture has since been discontinued. Experience gained along this line will un-
doubtedly prove valuable in the future.,
A new-model, air-cooled, completely enclosed electric motor which can be
easily modified into'a crane motor has been developed at the Ganz Electrical
Plant.
The Laub Electric Motor Factory is now manufacturing small electric motors
with built-in features similar to those which were produced at the Matyas Rakosi
Works.
The Siemens Factc__ is producing motors for small windlasses, and the Dy-
namo State Enterprise is producing much-needed electrical powered hand tools A
new series of 12 dc motors of 10-200 hp is being manufactured at the Ganz fac-
tory. These are capable of 35% more production than the old motors of the same
weight.
Hydraulic turbogenerators and large motors are being successfully produced
using domestic materials wherever possible, even if changes in c,_nstruction are
necessary. One such change is the use of domestic Siemens-Martin steel, which
is somelhat softer than the chrome-nickel-molybdenum alloy imported before the
war.
Sanitized Copy Approved for Release 2011/09/27: CIA-RDP80-00809A000600370277-4
 Sanitized Copy Approved for Release 2011/09/27: CIA-RDP8O-00809AO00600370277-4
CONFIDENTIAL
Numerous large motors are under construction at the Ganz Electrical Plant.
?,000 hp, 3.000 v, 365 rpm induction motor is being built for one rolling
m,12l, and work has begun on a 7,000/12,500 hp do reversible motor for another
ralllrg mill. Three groups of machines with Ward-Leonard motor dynamos rated
at ..,450 hp, 5:.700 v are.be'_ng built for mine trans )rt. An Igner motor dynamo
and a 650 kw do twin motor are being built for a fox ign-make pipe-draw-bench.
An. 1,100 kw, two-pole, 3,000 v double rotor squirrel cage motor for a boiler
injector is also being built at the plant.
Two 1,000-cycle, 300 kva, 3,000 v hf generators are under construction for
use in metallurgical smelters. Many technical problems are being met in the
construction of large generators, such as the three 4,800 kva, 375 rpm vertical
t,.rbogeneratcrs. Until recently, multiple-pole generators had been constructed
exclusively with cylindrical poles. The present orders, however, are being
filled with oblong poles; thiscauses a number of technical problems, but the
design is much more economical. Similar.design is being used in construction of
6,200 kva, 500 rpm-hydraulic turbogenerator having a laminated cylindrical rotor
instead of distinct poles.
The Kando single-phase, 50-cycle electric locomotives are still in opera- -
tion on the 16,000 v network, but electrification of the railroads made it neces-
sary to develop a lightweight locomotive without a driveshaft power transmission,
capable-of greater speeds and suitable for freight service. Since a pole-com-
mutation apparatus cannot be used in motors in which power is applied directly
to the separate axles, a method was introduced at the Ganz factory in which the
rate of revolution is regulated by varying the frequency.; The new modified lo-
comotive weighs 85 tons, and produces 3,200 hp, as compared with the old 98-
ton, 2,500 hp model. The main machinery of the new model consists of a phase
shifter, frequency converter, and an excitor generator built into one housing
and operating on a common shaft. Frequencies of 25, 50, 75, 100, and 125 cy-
cles cai. be delivered to the five driving motors and, through the selection of
wheels of the appropriate diameter, velocities in kilometers per hour corre-
sponding to the frequencies result. Construction of the first locomotive is
already far advanced, and in all probability, it should undergo test runs this
summer.
A smaller unit for motor coaches has also been developed at the Ganz fac-
tory. The 16,000 v of the line are stepped down to operate a motor-unit con-
sisting of a single-phase synchronous motor and a dynamo which supplies power
for the do motors attached to the individual axles.
A number of a new series of diesel-electric trains are under construction,
each consisting of two motor units-and four coaches. The motor unit is powered
by a 600 hp diesel engine driving a generator, which supplies two 245 hp dc mo-
tors, operating at 730 to 1,800 rpm. The two motor unit cars, located at the
frtr..: and back of the train, also contain ac generators powered by separate
diesel units to supply the auxiliary equipment.
A factor contributing to saving weight in traction motors is the use of
glass for insulation. At first, glass cloth had to be imported, but now only
the thread is imported, weaving and impregnation being performed within the
country.
The nationalization and unification of many smaller factories have made
possible the development of medium-sized plants'. For example, the following
plants were combined to:. form the Dynamo State Enterprise: the Laub factory;
Balogh Feductor Factory; Matyas Rakosi Electromotor Works; United Machine Fac-
tory; Watt Electric Motor, Dynamo, and Electrical Equipmen, Factory; and the
Kollector Factory. With the nat'.onalization of the Brown Boveri plant at Buda-
pest, the last capitalist-owned electric motor manufacturing plant in the coun-
try has come under planned production, clearing the way for the standardization
of manufactured articles.
- END -
- 2 -
CONFIDENTIAL
Sanitized Copy Approved for Release 2011/09/27: CIA-RDP8O-00809AO00600370277-4