Single-phase complete transformer substations with rated power 1.25; 2.5; 4 and 10 kVА for HV voltage 10 or 6 kV and LV voltage 0.23 kV (КТП further on) are assigned for reception, transformation and distribution of the electrical power of single-phase AC with 50 Hz frequency.

The complete transformer substations (КТП) rating from 25 up to 250 kVA for three-phase AC power with frequency 50 Hz and voltage 6-10/0,4 kV are single-ended for outdoor installation. They are assigned to supply agricultural consumers, separate settlements or small industrial objects in regions with temporary and cold (from – 55С up to + 40С).

Dead-ended uprated complete transformer substations rating 25, 40, 63, 100, 250, 400 kVА, for voltage 6 or 10 kV (on the HV side) and 0,4 kV (on the LV side) are assigned for reception, transformation and distribution of three-phase AC electric power with frequency 50 Hz in systems with solidly earthed transformer neutral on the LV side.

Dead-Ended Complete Transformer Substations (КТП 1) rating 63, 100, 160, 250, 400 кV∙А, for voltage 0,4 kV (on the LV side) are assigned for reception, transformation and distribution of three-phase AC electric power with frequency 50 Hz in systems with solidly-earthed neutral on the LV side. The КТП are assigned to supply agricultural consumers, separate settlements and small industrial objects in regions with temporary climate (from -45С to +40С). The КТП 1 is mounted on a simple concrete ground 200 mm in height.

Through-pass Complete Transformer Substations (КТП 2) rating 63, 100, 160, 250, 400 кVА, for voltage 0,4 kV (on the LV side) are assigned for reception, transformation and distribution of three-phase AC electric power with frequency 50 Hz in systems with solidly-earthed neutral on the LV side. The КТП 2 are assigned to supply agricultural consumers, separate settlements and small industrial objects in regions with temporary climate (from -45С to +40С). The КТП 2 is mounted on a simple concrete ground 200 mm in height.

Uprated Complete Transformer Substation (here and then – КТПГСМ) rating from 100 to 630 kVА for voltage 6 or 10 kV on the HV side and 0.4 kV on the LV side, frequency 50 Hz are assigned for reception, transformation and distribution of electric power with radial (double-radial) and loop urban networks in regions with temporary climate (temperature between -45С tо +40С).

Complete transformer substations rating 250, 400, 630, 1000 kV∙А for voltage 6 or 10 kV on the HV side and 0.4 kV on the LV side, are assigned for reception, transformation and distribution of electric power with frequency 50 Hz in one-two radial and loop urban networks in regions with temporary climate (from -45С tо +40С).

Single or double transformer Single or Double-row Block-Type Complete Transformer Substations with rating power up to 2500 kV•А for primary voltage 6 or 10 kV and secondary voltage 0.4 kV, frequency 50 Hz are designed for power supply of industrial objects in temporary and cold climate (–60С to +40С) regions.