

DESCRIPTION 

SAPR TON 
Calculation system of mathematical simulation of power transformers 
1 
PRT* 
Design calculations of the transformer optimum construction 
2 
TOK* 
Calculation of current distribution in the windings during shortcircuit 
3 
OST* 
Optimization of places for transposition in helical windings 
4 
MPO 
Calculation of magnetic field in windings 
5 
POB 
Calculation of main and eddy losses in the windings 
6 
PBT 
Calculation of tank losses 
7 
RKZ 
Calculation of dissipation resistances of the winding pairs 
8 
PIO 
Calculation of noload losses and current 
9 
PRM 
Calculation of the main magnetic flux distribution in the magnetic core stacks 
10 
TRP 
Calculation of transient process in transformer 
11 
VLN* 
Calculation of impulse over voltages 
12 
COILINS 
Library of data to VLN for calculation coiltocoil insulation safety factors 
13 
EPC* 
Calculation of electric field 
14 
ENDINS 
Library of data to EPC for calculation safety factors of electric strength of oil ducts in a zone of winding end 
15 
ENDINS2 
Library of data to EPC for calculation safety factors of electric strength of oil ducts outside the windings in a zone of end and in the centre height 
16 
MIDINS 
Library of data to EPC for calculation safety factors of electric strength of oil ducts between windings in a centre zone 
17 
TCO 
Thermal calculation of the windings with ONAN, ONAF, OFAF, OFWF, ODWF, ODAF cooling systems 
18 
TCM 
Thermal calculation of cooling systems (ONAN, ONAF, ODAN, OFAF, ODAF, OFAF/ODAF, OFWF/ODWF) 
19 
TRM 
Core thermal calculation 
20 
TEO 
Leads thermal calculation 
21 
PGR 
Calculation of permissible systematic and emergency overloads in the windings 
22 
Z0 
Calculation of impedances of zerosequence of shortcircuit and noload of threephase transformers and autotransformers 
23 
SND 
Calculation of sound pressure level and sound power level 
Standalone software’s 
Mechanical calculations 

ELDINST 9 
Calculation of electrodynamic stability of the transformer windings at shortcircuit 
Insulation calculations 

VLN 
Calculation of impulse over voltages 

COILINS 
Library of data to VLN for calculation coiltocoil insulation safety factors 

EPC 
Calculation of electric field 

ENDINS 
Library of data to EPC for calculation safety factors of electric strength of oil ducts in a zone of winding end 

ENDINS2 
Library of data to EPC for calculation safety factors of electric strength of oil ducts outside the windings in a zone of end and in the centre height 

MIDINS 
Library of data to EPC for calculation safety factors of electric strength of oil ducts between windings in a centre zone 

BUSHING 
Library of data to EPC for calculation safety factors of electric strength in insulation, surrounding the lower (oil) part of the bushing 

TURNINS 
Calculation of interturn insulation safety factors 


Software for distribution transformers 

PRT 
Design calculations of optimization on distribution transformers 