English Translation

Note: Mr. Chancellor Preuf, from the office of Mr. Reichsprotektor called Dipl. Ing. Keil from the group economy and asked for more information about the possibility of increasing the operational safety of the inter-country network, from which castle Jungfern Breschan is supplied, by the installation of a selective protection, To this it is noted: In each wide-branched network one strives to limit the effect of disturbances of any nature on the stove of emergence. This is done by the corresponding gradation of the sensitivity of the fuses and protective devices in such a way that fuses or protective relays burn or shut down the earlier they are removed from the power plant, relay installations, such as the so-called selective protection are significantly more effective than fuses, and are therefore preferred in modern grids. The supply network of the Central Bohemian Electricity Association is not equipped with modern NeB protective devices. Unfortunately, it is also not possible to effectively modernize the network in a shorter time, because it extends over an area of more than 4.ooo m2 and the reconstruction of course would have to cover the 2 whole operation. The reconstruction work is so extensive that even in peacetime a longer period would be necessary to carry out it. In the short term, selective protection cannot be installed. As stated in the previous report, certain circuit-related measures were taken to increase the safety of the feeding line for Schloss Jungfern Breschan. Unfortunately, it appeared that these measures could only be implemented after completion of a trans-formator station currently under construction, which is likely to be in July. According to the records of the Central Bohemian Federation from earlier years, in thunderstorms the vulnerability of the power supply is very high especially in the area of the castle and often lightning strikes occur. As the only remedy for such disturbances remains the commissioning of the own house headquarters. As it was raised on the spot, the house headquarters of the castle can be set in motion in the presence of the guards in 1o - 15 '- aeß Last week a new storm disturbance occurred, the power supply remained almost eéae interrupted all night. As the electricity association points out, the long duration of the interruption is due to the fact that no telephonic connection could be established with the power plant in Mirowitz. In such cases it is possible to notify the operating station of the association in Radotin near Prague, tel. RF3-139 or RF3-168. From this office the responsible management can then be informed via the company telephone. Tte Please contact!