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Current transformer of internal installation 36 kV

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  • Brand: Turkey
  • Product Code: ATB-40
  • Availability: In Stock
Main specifications
All specifications
Heat resistance class of insulating material: Е
Nominal frequency, Hz: 50
Nominal winding accuracy class for measurements:  0,2; 0,2S; 0,5; 0,5S; 1,0; 3,0.
Number of secondary windings: 1, 2, 3
Operating temperature °C: from - 45 °С to 40 °С
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The current transformer is a single-phase cast construction. The primary winding, core and secondary winding of current transformers are vacuum-sealed with cycloaliphatic epoxy resin, which provides protection against corrosion, moisture penetration, and has a high insulating capacity. Transformers do not require additional service and maintenance during operation. The transformer has a copper primary winding, which can be ordered with a switchable number of turns. The secondary windings are multi-turn, made of copper wire, located on laminated magnetic cores made of cold-rolled electrical steel.

Support current transformers type ATB-40 are designed for indoor installation in networks with voltage up to 36 kV (40.5 kV) inside complete switchgears and transformer substations. Current transformers of the ATB-40 series manufactured by designed to transmit signals (measuring information) from the primary measurement circuits to measuring instruments, protection or control equipment, for networks of secondary connections from high voltage. Current transformers act as a conductor support in the primary circuit.

Specifications
Parameters
Heat resistance class of insulating material Е
Nominal frequency, Hz 50
Nominal winding accuracy class for measurements  0,2; 0,2S; 0,5; 0,5S; 1,0; 3,0.
Number of secondary windings 1, 2, 3
Operating temperature °C from - 45 °С to 40 °С
Rated accuracy class of windings for protection  5P, 10P
Rated primary current, A from 5 to 2500
Rated winding power per measurement, VA from 1 to 100
Test impulse voltage, kV 190
Weight, kg 75
Winding device safety factor for measurement FS from 5 to 30
Nominal voltage, kV to 40,5
Maximum operating voltage, kV 35
Test alternating voltage, kV 95
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