Modular distribution transformer substations KTPB (LE-ТПБ) for rated voltages 220/110(150)/35/10(6)kV are designed for receive, conversion, transmission and distribution alternating-current of industrial frequency 50 Hz to supply civil and industrial uses, agricultural and constructional facilities, railway electrification, for use in power utilities operation and distribution network

 

Construction

KTPB (LE-TPB) include power transformers, air insulated outdoor switchgear (ORU) 220, 110, 35 kV with flexible and rigid busbar elements, package switchgear KRU 10(6) kV with flexible busbar elements, substation control building (OPU) with low voltage switchboard cells, overhead cable racks, lighting devices and protection, ground, reinforced concrete foundation, cable racks, surrounding fence.    

 

Reference designation structure LE-ТPB:

                     1        2       3         4              5         6         7

           LE-ТPB-ХХХ-Х/ХХ-Х/ХХ-ХxХХХХ-Х-LE ХХ

1 — Advanced modular distribution transformer substations produced by LVEP “Lider Elektrik”;

2 — HV rated current, kV - scheme number;

3 — MV rated current, kV – scheme number;

4 — LV rated current, kV;

5 — Power transformer number and capacity, kVA;

6 — Ambient conditions under GOST 9920-89;

7 — Climatic region modification and placement category under GOST 15150-69

 

LE-ТPB order designation example:

LE-ТPB-110-3/35-3/10-2х25000-4-LE N1  SS U 27.1–35036863–015:2014

 

Technical data of LE-ТPB

Parameter	Value
	110 kV	35 kV	10(6) kV
1  Transformer rated power  [kVA]	up to 63 000	up to 25 000	-
2 Rated voltage	110	35	6
3 Rated current [А]: - power transformer circuits - line and bridge circuits - collecting bus - ORU cells - switchgear lead-in panel   - MV - 10(6) kV	630 630 1000; 2000 630; 1000; 2000   -   -	630 630 630; 1000 -   -   -	- - - - 630; 1000; 1600; 2000; 2500; 3150; 4000 1000; 2000; 3150; 4000
4 Peak withstand current, 3s [кА]	52; 81	26; 52	51; 81; 102
5 Short-time thermal current, 3s [кА]	20; 31,5	12,5; 20	20; 31,5; 40
6 Earthing circuits rated voltage [V] - AC - DC - rectified current	380/220 220 220	380/220 220 220	380/220 220 220