ST-7 upgrade

General Description

St-7 Polish substations were well spread on oil fields latest 40 years. But now they have got out of date. Others which still working - do not meet modern reliability standards. 

ST-7 deep upgrade proposal by Electroshield Samara allows to replace old important parts of substation or even replace whole substation to put on existing foundation. This approved solution allows to decrease modernization time bounds and cut costs by using standard ready-made solution.

Reducing the cost of modernization.
Certified and proven solutions.
Modern equipment of factory readiness.
Short terms of reconstruction.
Confidence in reliability.
Reduced maintenance costs.
Staff security.

Technical Characteristics

Variants of replacement of 35 kV Complete replacement of the finished unit Retrofit solution
Equipment on the high side 35 kV VVN-SESH-35; RGP-SESH-35; TOL-SESH-35; KRU-SESH-59; VVU-SESH-P-10

Technical characteristics 

VVN-SESH-35

Rated breaking current, A

25 31,5

Current, A

1 000; 1 600
1 000
Commutation life

With rated current

25 000  
With rated breaking current 100
80

Circuit breaker weight, kg

375  

List of sets of equipment

Accessory equipment
Name
Vacuum circuit breaker
VVN-SESH
Disconnector
RGP-SESH
Transformer
TOL-SESH
MV Switchgears
KRU-SESH-59
Relay protection unit
BMRZ мarious series