Transformers of 20-35 kV SZTT TOL-20, TSHL-20-I, TPL-35, etc.

Transformers are designed to transmit a signal of measuring information to measuring instruments and protection and control devices, to isolate secondary connection circuits from high-voltage voltage in complete devices of indoor and outdoor installation (KRU, KRUN, CSR) of alternating current for a voltage class up to 35 kV of frequency 50 or 60 Hz.

• Features of the use of current transformers with accuracy class S.

Transformers for differential protection are supplied by special order.

It is possible to manufacture transformers with different transformation coefficients of the secondary windings. Transformers are equipped with protective transparent covers for separate sealing of secondary terminals (sealing sample).

The TOL-20 current reference transformers are manufactured in the climatic version of UHL and placement category 2.

• Voltage class: 20 kV;
• Rated primary current: 5-2500 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 10P;
• number of secondary windings: 2, 3 or 4.

• TOL-20. Technical description.

Bus current transformers TSHL-20-I are manufactured using a special technology for the manufacture of secondary windings, which allows to exclude the influence of neighboring current-carrying buses and the bending of its own bus. In this case, it is allowed to install current transformers in unshielded current lines.

• Voltage class: 20 kV;
• Rated primary current: 3000-18,000 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 10P;
• number of secondary windings: 2 or 3.

• TSHL-20-I. Technical description.

Through-pass current transformers TPL-20 and TPL-35 are manufactured in the "UHL" or "T" design of placement category 2 according to GOST 15150.

• Voltage class: 20 or 35 kV;
• Rated primary current: 300-4000 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 10P;
• number of secondary windings: 2, 3 or 4.

• TPL-20, TPL-35. Technical description.

The TOL-35 current reference transformers are manufactured in the climatic version "UHL" and "T" of the placement category 1 according to GOST 15150. The length of the leakage path III according to GOST 9920.

• Voltage class: 35 kV;
• Rated primary current: 15-3000 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5S; 0.2S; 10P;
• number of secondary windings: 3, 4 or 5.

• TOL-35. Technical description.

Reference current transformers TOL-35-III-IV are designed for installation in open switchgear (ORU) and other electrical installations of voltage class 35 kV, and are independent products. Climatic version "UHL" or "T" of the accommodation category 1 according to GOST 15150. The length of the leakage path III according to GOST 9920.

• Voltage class: 35 kV;
• Rated primary current: 100-2000 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 10P;
• number of secondary windings: 1, 2 or 3.

• TOL-35-III-IV. Technical description.

Reference current transformer TOL-35 III-7.2 are intended for installation in open switchgears and other electrical installations of voltage class 35 kV, and are independent products. Climatic version "UHL" or "T" of the accommodation category 1 according to GOST 15150.

• Voltage class: 35 kV;
• Rated primary current: 10-2000 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 10P;
• number of secondary windings: 1, 2, 3 or 4.

• TOL-35 III-7.2. Technical description.

The TLK-35 reference current transformers are manufactured in the climatic version "UHL" and "T" of the placement category 2.1 according to GOST 15150.

• Voltage class: 35 kV;
• Rated primary current: 5-3000 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 10P;
• number of secondary windings: 2, 3 or 4.

• TLK-35. Technical description.

• Current transformers TOL-20. Description of the type of measuring instrument.

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