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  4. Voltage range 6-12 kV
  5. Current transformer TOLU-10-1

Current transformer TOLU-10-1

Current transformer TOLU-10-1 is used for taking measurements, connecting automation and control devices.

Its main task is to reduce the primary current values to those parameters that allow to obtain correct data on the network operation. It also provides isolation of secondary circuits from the high voltage of the grid. This ensures the safety of their operation in AC devices. These transformers are an element of complete switchgear.

The use of an innovative material - a nanocrystalline alloy - in the creation of the core ensures the product's long-term operation while maintaining its original metrological capabilities. Trouble-free operation for 50 years is guaranteed. The transformer is manufactured in the climatic version "U" of the placement category 2.1. You can buy it at an affordable price in our store.

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Type examination certificate (Module B) No. UA.TR.001 150 19 Rev.2, reference number 29/3/B/12/016-20. Complies with DSTU EN 61869-2:2017, TU U 31.1 345626687-001:2007.

Technical specifications

Parameter nameValue
Rated voltage, kV10
Найбільша робоча напруга, кВ12
Maximum operating voltage, kV5, 10, 15, 20, 30, 40, 50, 75, 100, 150, 200, 300, 400, 500, 600, 800, 1000
Rated secondary current, A1;5
Rated frequency, Hz50
Accuracy class of the secondary winding: - for measurement; - for protection;0,2S; 0,5; 0,5S; 0,5S+ / 5P;10P
Rated secondary load at cos φ = 0.8, VxA winding: - for measurement; - for protection;1015
Rated primary current, A5101520304050751001502003004005006008001000
Rated short-term thermal resistance current, Ith, kA0,61,31,32,63,33,33,77,47,414,414,428,828,836367272
Rated current strength of dynamic stability, Idyn, kA1,63,33,36,58,38,39,318,518,5363672729090180180
Safety factor of the device, FS, not more than33333333333333455
Ultimate accuracy factor, ALF, not less than**77777887878788999

It is possible to supply a cover to protect the secondary winding terminals from unauthorized access (sealing) as part of the transformer package - if specified in the supply contract. Transformers can be manufactured with C-size 65 or 80.* Transformers with rated secondary load up to 30 VxA can be supplied (specify when ordering).** Transformers with a maximum accuracy factor of at least 10 can be supplied (specify when ordering).
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