The КТПСН auxiliary complete transformer substations are intended to supply auxiliaries of power stations (including nuclear power stations). Climatic type and category of installation of substations are УЗ and 04 according to ГОСТ 15150-69. Air temperature in power and relay cells must not to exceed 55С. The КТПСН can operate in seismically dangerous regions.

In the order of the КТП it is necessary to indicate a structural configuration or the КТП layout design with an indication of types and specification of transformers, their number, primary layouts of filling LV distribution device switchboard (here and then — the РУНН), with a list and parameters of the equipment. For the earthquake-proof КТП version the maximum calculated earthquake intensity (here and then МРЗ) in points according to ГОСТ 6249 and the КТП installation level (the mark) are to be given.

An order example of the КТП:

• The single-transformer (rating 1000 kVA) КТП for needs of national economy
  КТПСН-1000/10/0,4-УЗ ТУ УЗ.31.2-00213440-018-2003
• The double-transformer (rating 630 кВА each) КТП for the same purpose to export to the countries with tropical climate
  2КТПСН-630/10/0,4-04, export ДСТУ 3399 (ГОСТ 14695).
• The earthquake-proof single-transformer (rating 1000 кВ-А) КТП for exporting to countries with temporary climate for functioning at nuclear power stations, МРЗ is 7 points, the installation level is 21 m
  КТПСН-1000/10/0,4-УЗ ДСТУ 3399 (ГОСТ 14695), for nuclear power station, МРЗ 7 points, the mark is 21 m, export

Besides, the order must include dispatching and payment requisites of the customer, the customer’s full name and post address.