The electrical equipment market of the Netherland East Indies

Bibliographic data

Monograph

Identifikator:: 1833098390

URN:: urn:nbn:de:zbw-retromon-221838

Document type:: Monograph

Title:: The electrical equipment market of the Netherland East Indies

Place of publication:: Washington

Publisher:: Gov. Pr. Off.

Year of publication:: 1930

Scope:: II, 46 S.

Digitisation:: 2022

Collection:: Economics Books

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Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: Electricity in industry

Collection:: Economics Books

26 The Boekit-Asam coal mines, which were opened in 1919, also use electric power, two A. E. G. steam turbines and generators, each of 1,250 kilowatts capacity having been installed in 1924. Since the important coal mines in the territory already have elec- trical equipment, any further business in this field will necessarily take the form of renewals and: extensions. Tin mining. —Electric power is used extensively by Government and private interests in the extraction of tin on the islands of Banka and Billiton. On Banka the mines are entirely Government owned and operated. They obtain their power from the Government sta- tion at Mantoeng, where six Stork stesm turbines developing 2,500 horsepower each operate a similar number of generators manufac- tured by the Dutch firm, Willem Smit & Co., having a total capacity of 12,000 kilowatts. The first installation was made in 1919 and con- sisted of two 2,500-horsepower steam turbines and two 2,000-kilowatt generators. Four additional installations have been made since then, and at present the mines are completely electrified. A still further increase in the central power station is now under consideration. The mines operated by the Gemeenshappelijke Mijnbouw Maats- chappij Billiton are also using electric power obtained from 8 central station at Manggar, which is claimed to be the second largest Diesel installation in the world. The plant at Manggar was first opened in 1914, when three Werkspoor Diesel motors and three Siemens- Schuckert motors, having a total generating capacity of 3,300 kilo- watts, were installed. The plant has been enlarged from time to time until the present capacity is now about 8,700 kilowatts. Electrical energy is used chiefly by the above mines in connection with the operation of suction pumps of 200 and 250 horsepower, and other small motors. As early as 1921 the Banka tin mines were using approximately 40 electric motors aggregating over 1,300 horse- power. Asin the case of electric power used in coal mining, new busi- ness in this field is limited to renewals and extensions of existing facilities. RUBBER INDUSTRY With few exceptions, all of the European rubber estates in the Netherland East Indies are using electrical energy of some descrip- tion for power or lighting purposes. Few of the estates are obtaining their electric supply from the public-utility companies, as the latter's transmission lines have not yet been extended to the localities where rubber estates are situated. In the rubber factories electric power is used chiefly for driving the machines which press the coagulated latex into sheets. Electrically driven machines are also used to macerate the coagulum and produce crépe or to clean and process scrap rubber. These machines are little more than a set of two steel or cast-iron rollers, which are driven by a prime mover of some description, commonly a Diesel or a steam engine. But estates with ample electric power available are now using motors. Motors of 6 to 10 horsepower for each battery of three machines are used for the manufacture of sheet rubber, and motors of from 15 to 20 horsepower are used for similar batteries of rollers making crépe sheets. Electric driers, especially for crépe rubber, are being tried out in the Netherland East Indies, several being installed in 1929. The

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