Transformers of 6, 10 kV SZTT TOL-10, TOL-10-I, TOL-10-M, etc.

Measuring current transformers are designed for installation in complete switchgears and serve to transmit a signal of measuring information to measuring instruments and (or) protection and control devices, to isolate secondary connection circuits from high voltage in AC electrical installations for a voltage class up to 10 kV of frequency 50 or 60 Hz.

Transformers for differential protection are supplied by special order. Transformers are manufactured in the climatic version "T" and "UHL" of the placement category 2.1 according to GOST 15150 and are intended for use in enclosed spaces.

• 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 TOLK-6 and TOLK-6-I reference measuring current transformers are designed for installation in high-voltage complete mine switchgear (CRU) in networks with a voltage of up to 6 kV of coal and shale mines dangerous for gas and dust. TOLK-6-1 transformers are also used in complete switchgear. Transformers have a climatic version "O", placement category 5.1 according to GOST 15150, TOLK-6-1 transformers can be manufactured in a climatic version "U", placement category 2.

• Voltage class: 6 kV;
• Rated primary current: 10-600 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 10P;
• number of secondary windings: 1.

• TOLK-6 and TOLK-6-I. Technical description.

Reference measuring current transformers TOL-10 are available with one secondary winding for measurement and one secondary winding for protection. Transformers with a rated current of 1000 and 1500 A can be produced with two secondary windings for protection.

• Voltage class: 6, 10 kV;
• Rated primary current: 10-2000 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 1; 5P; 10P;
• number of secondary windings: 2 or 3.

• TOL-10. Technical description.

Reference measuring current transformers TOL-10-M are manufactured for nominal primary currents of 2500, 3000, 4000 A, with two, three and four secondary windings.

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

• TOL-10th. Technical description.

Reference measuring current transformers TOL-10-I can be manufactured with a variable transformation coefficient on the "high" and "low" sides, switching the primary or secondary winding, respectively. Transformers for differential protection are supplied by special order. Transformers with the letter "B" in the designation are supplied with flexible secondary terminals with a length of at least 100 mm.

• Voltage class: 6, 10 kV;
• Rated primary current: 5-2000 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-10-I. Technical description.

The current measuring transformer TOL-10 III UHL1 of the outdoor installation is based on the existing design of the well-proven transformer TOL-10-I and is an addition to the voltage transformer of the outdoor installation ZNOL-10 III UHL1. Included in the package, these transformers can be used on open 10 kV switchgears for electricity metering and line protection, as well as for installation in reclosers.

• Voltage class: 6, 10 kV;
• Rated primary current: 5-2000 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.

• TOL-10 III. Technical description.

The reference measuring current transformer TOL-10-8 (replaces the transformer TLM-10) for differential protection are supplied by special order. Transformers of versions 8.5 and 8.6 are supplied with flexible terminals with a length of at least 100 mm.

• Voltage class: 6, 10 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: 2 or 3.

• TOL-10-8. Technical description.

Reference measuring current transformers TOL-10-9

• Voltage class: 6, 10 kV;
• Rated primary current: 5-2000 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-10-9. Technical description.

The reference measuring current transformers TOL-10-11 have reduced overall dimensions – only 210 mm in length!

• Voltage class: 6, 10 kV;
• Rated primary current: 10-3000 A;
• Rated secondary current: 1-5 A;
• Accuracy class: 0.5; 0.5S; 0.2; 0.2S; 10P;
• number of secondary windings: 2.

• TOL-10-11. Technical description.

Current measuring transformers TOL-10-IM-2 (-3;-4)

• Voltage class: 6, 10 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: 2, 3 or 4.

• TOL-10-IM. Technical description.

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

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