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PKTPK series double-ended kiosk-type package transformer substation for 10(6)/0.4 kV

The double-ended kiosk-type package transformer substation PKTPK, with a capacity from 160 to 1000 kVA, is intended for supplying electric power to rural facilities, oil and gas fields, individual residential settlements, and industrial projects.

PKTPK is designed to operate under the following conditions:

  1. altitude above sea level: no more than 1000 m;
  2. ambient temperature: from -45° С to +40° С for the climatic category and placement category U1; from -60° С to +40° С for the climatic category and placement category UKhL1* according to GOST 15150-69 and GOST 15543.1-89 (NF1 according to IEC);
  3. environment: industrial atmosphere of category II according to GOST 15150-69 (non-explosive, containing no reactive gases and vapors in concentration that may cause drop of package transformer substation’s parameters to inadmissible values);
  4. wind speed: up to 36 m/s (with wind pressure up to 800 Pa) in the absence of glaze ice;
  5. wind speed: up to 15 m/s (with wind pressure up to 146 Pa) at ice thickness of up to 20 mm.

Classification of the PKTPK design must conform to those specified in the table below. 

Criteria of classification
PKTPK
Type of substation 
double-ended
By the type of the power transformer
with oil-immersed type; with dry-type
By the number of the power transformers applied
with one transformer
By the type of the transformer neutral at the low-voltage side
with dead-earthed neutral
By the make of the high-voltage bushing
cabled-type (K); aerial-type (V)
By the make of the cable outlets in the low-voltage switchgear
downward outlet
By the way of installation of automatic circuit breakers
with fixed circuit breakers

* according to the recommendations of transformer manufacturers, U1 version transformers are allowed to be used for 10/0.4 package transformer substations of UKhL1 (NF1 as per IEC) version. The manufacturers guarantee their safe operation at a temperature of down to -60° C, but their start-up should be done at a temperature of not lower than -45° C. Otherwise, the oil should be heated or replaced for arctic-type one.

Technical specifications: 

Parameter name
Value
Power transformer capacity, kVA
160
250
400
630
1000
Rated voltage on the HV side, kV
6; 10
Maximum operating voltage on the HV side, kV
7.2; 12
Rated voltage on the LV side, kV
0.4
Short-time thermal current on the HV side, kA (during 1 sec)
20
Short-time electrodynamic current on the HV side, kA
51
Short-time thermal current on the LV side, kA (during 1 sec)
10
20
Short-time electrodynamic current on the LV side, kA
25
50
Resistance of low-voltage switchgear circuit insulation, MΩ
1
Resistance of high-voltage device circuit insulation, MΩ
1000
Insulation level according to GOST 1516.3-96:
- with oil-immersed transformer
- with dry-type transformer
 
- standard insulation
- thinned insulation
Rated breaking current of the 6 kV safety device
31.5
31.5
31.5
31.5
20
Rated current of the 10 kV safety device
20
31.5
50
80
100
Rated breaking current of the 10 kV safety device
31.5
31.5
31.5
20
12.5
Weight, no more than, kg
3840
4090
4410
4900
5740

See more about 10 kV complete transformer substations of KTP series.

 
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