LV CTs : STEN-081 2017-07-18T14:46:50+00:00

STEN-081 Transformers

All STEN-081 series transformers are casted in epoxy resin (except STEM-081-1.1) and designed to operate in networks whose maximal voltage level is not over 0.72kV.  They provide reliable and inexpensive conversion of higher currents on their primary side (up to 4000A – for higher primary currents, please contact us) to a more suitable values of currents on the secondary side (5 or 1 A – for different secondary currents, please contact us).  They are intended for internal (indoor) installation and operation only.   Bus bars and/or cables are to be used as primary conductor which passes through the window of the transformer. Transformers differ in their technical characteristics such as rated primary currents, accuracy class and rated power and also by their physical dimensions and shapes (in order to meet the desired requirements by the conductors)  

Transformers are manufactured in accordance with the latest standards and procedures.

STEN-081-1.*

 

STEN-081-1.1
STEN-081-1.2

STEN-081-2.*

 

STEN-081-2.1
STEN-081-2.2

STEN-081-3.*

 

STEN-081-3.1
STEN-081-3.2
STEN-081-3.3
STEN-081-3.4
STEN-081-3.5

STEN-081-4.*

 

STEN-081-4.1
STEN-081-4.2

STEN-081-*

 

STEN-081-5
STEN-081-6
STEN-081-7.1
STEN-081-7.2
STEN-081-7.3
STEN-081-7.4

STEN-081*

 

STEN-081A
STEN-081B
STEN-081C
STEN-081D

STEN-081-1.*

LV CTs of type STEN-081-1.* are intended for indoor installation only.  
Two models are manufactured, one casted in epoxy resin (STEN-081-1.2)
and STEN-081-1.1 which is insulated by poly-carbonate.  Type of insulation is the only difference between two models.  
Click on the model on the right for more information.

STEN-081-1.1

STEN-081-1.2

  Rated values    Max. voltage   (kV)    0.72
  Primary current (A) 200 - 600
  Secondary current (A) 5 or 1
  Accuracy class    0.5 ; 1 and 3
  Dimensions      Overall dimensions   (mm) 128 x 90 x 50  
  Opening dimenstions (mm) Ø25 ; 16 ; 22.5 ; 31
  Weight     (kg) 0.75
      NOTE:  The above are typical LV CTs of type STEN-081-1.* transformers.  For the same type LV CT with different technical characteristics, please contact us.  

STEN-081-2.*

LV CTs of type STEN-081-2.* transform primary currents in range of 150 to 1500A to 5 or 1A.
  The two models differ in opening size, rated power and primary currents.  
Click on the model on the right for more information.

STEN-081-2.1

STEN-081-2.2

  Rated values    Max. voltage   (kV)    0.72
  Primary current (A) 150 - 1200 200 - 1500
  Secondary current (A) 5 or 1
  Accuracy class    0.5 ; 1 and 3
  Dimensions      Overall dimensions   (mm) 128 x 90 x 50  
  Opening dimenstions (mm) Ø40 ; 62 x 11 Ø45 ; 62 x 32
  Weight     (kg) 1.80
      NOTE:  The above are typical LV CTs of type STEN-081-2.* transformers.  For the same type LV CT with different technical characteristics, please contact us.  

 

STEN-081-3.*

LV CTs of type STEN-081-3.* transform primary currents in range of 300 to 1600A to 5 or 1A.  They are designed to be used only with cables as primary conductors except models STEN-081-3.3 and STEN-081-3.5 which can be fitted on the busbar as well
Click on the model on the right for more information.

STEN-081-3.1

STEN-081-3.2

STEN-081-3.3

STEN-081-3.4

STEN-081-3.5

  Rated values    Max. voltage   (kV)    0.72    
  Primary current (A) 300 - 600 600 - 1200 600 - 1200 1000 - 1600 1000 - 1600
  Secondary current (A) 5 or 1    
  Accuracy class    0.5 ; 1 and 3    
  Dimensions      Overall dimensions   (mm) 162 X 90 X 54    162 x 76 x 54
  Opening dimenstions (mm) Ø44 Ø52 Ø51 ; 62 x 11  Ø82 Ø71 ; 82 x 11 
Weight     (kg) 2.5   1.12  
      NOTE:  The above are typical LV CTs of type STEN-081-3.* transformers.  For the same type LV CT with different technical characteristics, please contact us.  

STEN-081-4.*

LV CTs of type STEN-081-4.* are designed for thicker cables conducting larger primary currents (up tu 4000A)
Two almost identical models are manufactured as standard products.   
Click on the model on the right for more information.

 

STEN-081-4.1

STEN-081-4.2

  Rated values    Max. voltage   (kV)    0.72
  Primary current (A) 750 - 3000 1000 - 4000
  Secondary current (A) 5 or 1
  Accuracy class    0.5 ; 1 and 3
  Dimensions      Overall dimensions   (mm) 212 x 130 x 54  
  Opening dimenstions (mm) Ø102 Ø120
  Weight     (kg) 3.1
     NOTE:  The above are typical LV CTs of type STEN-081-4.* transformers.  For the same type LV CT with different technical characteristics, please contact us.  

STEN-081-*

LV CTs of type STEN-081-* are designed to be used for busbars only.  
Two different sizes are manufactured as standard products covering the range of 800 to 2500A of primary current.  
Click on the model on the right for more information.

STEN-081-5

STEN-081-6

  Rated values    Max. voltage   (kV)    0.72
  Primary current (A) 800 - 2000 800 - 2500
  Secondary current (A) 5 or 1
  Accuracy class    0.5 ; 1 and 3
  Dimensions      Overall dimensions   (mm) 163 x 88 x 50 181 x 68 x 50
  Opening dimenstions (mm) 100 x 10 120 x 10
  Weight     (kg) 3.1 2.1
      NOTE:  The above are typical LV CTs of type STEN-081-* transformers.  For the same type LV CT with different technical characteristics, please contact us.  

STEN-081-7.*

LV CTs of type STEN-081-7.* are designed to be used for busbars only.  
Two different sizes are manufactured as standard products covering the range of 1000 to 4000A of primary current.  Models differ in opening/window sizes.  
Click on the model on the right for more information.

STEN-081-7.1

STEN-081-7.2

STEN-081-7.3

STEN-081-7.4

  Rated values    Max. voltage   (kV)    0.72      
  Primary current (A) 1000 - 4000  
  Secondary current (A) 5 or 1   
  Accuracy class    0.5 ; 1 and 3   
  Dimensions      Overall dimensions   (mm) 154 x 116 x 60 134 x 116 x 60
  Opening dimenstions (mm) 100 x 20 80 x 30  80 x 30 ; 100 x 15 100 x 30 
  Weight     (kg) 2.1 2.2  
      NOTE:  The above are typical LV CTs of type STEN-081-7.* transformers.  For the same type LV CT with different technical characteristics, please contact us.  

STEN-081*

LV CTs of type STEN-081* are designed to be used for busbars only and cables as conductors.  
Two different sizes are manufactured as standard products covering the range of 250 to 3000 A of primary current. Models also differ in opening/window sizes.  
Click on the model on the right for more information.

STEN-081A

STEN-081B

STEN-081C

  Rated values    Max. voltage   (kV)    0.72      
  Primary current (A) 250 - 600 300 - 1000 1000 - 3000
  Secondary current (A) 5 or 1   
  Accuracy class    0.5 ; 1 and 3   
  Dimensions      Overall dimensions   (mm) 128 x 90 x 42 152 x 145 x 45
  Opening dimenstions (mm) Ø46 ; 11 ; 31 ; 41 ; 51 Ø46 ; 11 ; 31 ; 41 ; 51 Ø80 ; 41
  Weight     (kg) 0.7 0.6 1.65
      NOTE:  The above are typical LV CTs of type STEN-081* transformers.  For the same type LV CT with different technical characteristics, please contact us.  

 

STEN-081D-*

LV CTs of type STEN-081D-* are designed to be used for cables except D-1 which has opening for the busbar as well.  Like other STEN-081 transformers, STEN-081D-* are for indoor insallation.   
Click on the model on the right for more information.

STEN-081D-1

STEN-081D-2

STEN-081D-3

STEN-081D-4

  Rated values    Max. voltage   (kV)    0.72         
  Primary current (A) 75 - 300 300 - 1000
  Secondary current (A) 5 or 1
  Accuracy class    0.5 ; 1 and 3      
  Dimensions      Overall dimensions   (mm) 170.5 x 100 x 84
  Opening dimenstions (mm) Ø28 ; 31 X 16 Ø32 Ø52 Ø60
  Weight     (kg) 4.8 4.1 
      NOTE:  The above are typical LV CTs of type STEN-081D-* transformers.  For the same type LV CT with different technical characteristics, please contact us.