21 TRANSMISSION AND DISTRIBUTION During the last five years, considerable attention has been given to the expansion of distributing systems and the extension of high- tension lines with the result that at present there are over 5,000 kilo- meters of cables carrying voltages of 10,000 volts and over. The total distances connected by these cables amounts to over 1,000 kilometers, of which about 15 per cent is located in the Outer Possessions. West Java.—-The greatest development in this direction has taken place in west Java and has been carried out almost entirely by the Netherland East Indies Government. The outstanding distribution system in this area is the 70,000-volt line that transmits the output of the two great water-power stations, Oebroeg and Kratjak, to the metropolitan district of Batavia, Weltevreden, and Meester Cornelis, through substations at Buitenzorg and Depok. About 710 kilo- meters of 70-millimeter copper cable is used in this 118-kilometer line. Other important systems in West Java are the following: System Plengan-Malahar-Bengkok o_o... Padalarang-Poerwakarta________________.._... 3engkok-Padalarang..... SRR. Maswati-Tiandjoer_ aan Lemboersitoe-Goenoengboelend. Jebroeg-Lemboersitoe «comma ceemeeaee Lamadian-Padalarang. ooo. ooo oimnnn 2oerwakarta-Kosambi. o_o oll Plengan-Guaroet. ..... SERRE aroet-Singaparna. . AERA Soemadra-Tjondong. on irae Jehroeg-Tiitjoeroeg - o.oo Kratiak-Rangkasbitoeng. _ .. Voltage 25, 600 30, 000-25, 000 95, 000 30, 000-25, 000 30, 000 30, 000 30, 000 30, 000-25, 000 30, 000-25, 600 30, 000-25, 000 30, 000-25, 000 30,000 20. 000 Length of line Num- ber of cables Metal Copper-ccou_- eee 0 ees [RU s {« JURA wiv Dr sm mms ssa mmm mmm Aluminum... mom i in 7 remo BO ie iin pean @O eae zr ee O 20 | eee 2 B [rma OD mmo me 57 8 dons 0 am mn Kilo- neters Total length of cables Kilo- meters 250 125 55 or a 100 110 70 366 197 ¢ 6. 340 The N. I. G. M. and the G. E. B. E. O., the two public-utility companies marketing electric current in west, J ava, have standardized the following currents for high and low tensions distribution in their respective areas. N. I. G. M., for high tension: 12,000 (volts); 7,000, 6,000, 2,000. For low tension: 440 (volts), 220/127, 110. ] G. E. B. E. O., for high tension: 30,000 (volts), 25,000, 6,000. For low tension: 220/127 (volts), 190/110. Central Java.—There are no outstanding distributing systems in central Java, the longest high-voltage transmission line being only about 30 kilometers in lencth. They are listed below: Svstem Tjatoer-Madioen co. oceeemememcmamem memo T0entang-SAMATATIE cov uem mannan cmmmmaennn Toentang-Sararang. «coo camececescamamccomen-n Madioen SYSteI ooo coe cece meee mmmma a o- 301o-1301018 11. — ee eee emma Voltage 25, 000 30, 000 30, 000 25, 000 5 000 .ength line Number nf cables Kilo- neters an 27 27 2 | ; 20 ’ Metal Copper....o..- cml 0m wa wi JOTI... SEE Aluminium... | wendoo aC Total ength of cables Kilo- meters 120 80 85 85 an