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  4. Voltage range 6-12 kV
  5. Current transformer TOLU-10-2

Current transformer TOLU-10-2

The TOLU-10-2 current transformer converts the high primary current value to produce an output that is acceptable for measurement.

The value of the mains current is determined by simple calculations automatically or by a specialist performing measurements. This transformer should be purchased if you plan to connect automatic machines or control devices. At the same time, it protects secondary circuits from high voltage.

This ensures the required level of safety of their operation. When equipping a switchgear, a relay switchgear and a grid tap changer, you need to buy and install this product. It is manufactured in climatic version "U" (temperate climate) of category 2.1. It meets the requirements of GOST 15150-69.

A nanocrystalline alloy is used to create the core, which allows it to remain protected from the effects of currents passing through the winding, creating a magnetizing effect.

  • Survey letter
  • Contact a specialist
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.

Technical characteristics

Parameter nameValue
Rated voltage, kV10
Maximum operating voltage, kV12
Rated primary current, A5, 10, 15, 20, 30, 40, 50, 75, 100, 150, 200, 300, 400, 500, 600, 800, 1000, 1500, 2000, 2500, 3000
Rated secondary current, A1;5
Rated frequency, Hz50
Number of secondary windings2, 3
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, V-A winding: - for measurement; - for protection;10 / 15
Rated primary current, A51015203040507510015020030040050060080010001500200025003000
Rated short-term thermal resistance current, Ith, kA0,61,31,32,63,33,33,77,77,414,414,428,828,836368686108108108108
Rated current strength of dynamic stability Idyn, kA1,63,33,36,58,38,39,318,518,5363672729090215215270270270270
Safety factor of the device, FS, not more than333333333333334555555
Ultimate accuracy factor, ALF, not less than **7777788787878899910131313

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 with a nominal secondary load of up to 30 V-A can be supplied (please specify when ordering).

** Transformers with a maximum accuracy factor of at least 10 can be supplied (specify when ordering).

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