Electrical measuring instruments >> transformers industrial (KTPVSh, TA, TN, T-0,66, TSh-0,66, TP, TPP and others) >> current transformers >> 10kV voltage class
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Current transformer TLSH-10-5 (TLSH105, TLSH 10 5, TLSH10-5, TLSH10 5, TLSH-105, TLSH 105, TLSH-10-V)
Current transformer TLSH-10-5 is designed to signal measurement data measurement devices, protection, automation, alarm and control circuits to isolate the secondary connections of high voltage electrical AC 50Hz or 60Hz.
Technical characteristics of the instrument current transformers TLSH-10-5:
The number of secondary windings - 4;
Rated voltage - 10kV or 11kV;
Maximum operating voltage of the device CT TLSH-10-5 - 12kV;
Rated frequency AC - 50Hz or 60Hz;
Rated secondary current of the current transformerunit TLSH-10-5 - 1A, 5A;
Rated primary current - 1000A, 1500A, 2000A, 3000A;
Accuracy class of the instrument current transformer TLSH-10-5:
- Secondary winding for measurement - 0,5; 0,5 S, 0,2; 0,2 S;
- Secondary protection - 5P, 10P;
Rated secondary current transformer load device TLSH-10-5 with a power factor:
- Cos φ = 0,8 - secondary winding for measurement - 30V · A;
- Cos φ = 0,8 - secondary protection - 30V · A;
Rated current ratio of secondary winding for protection - not less than 8-18;
Nominal safety factor of instruments for measuring the winding device CT TLSH-10-5 - 4-19;
Three-second thermal current - 31.5 kA, 140kA, 175kA;
Calculated values of the nominal current ratio of secondary winding for protection in terms of rated secondary load in accuracy classes 5P and 10P for the device CT TLSH-10-5 are shown in Table 1;
Table 1 Calculated values of the nominal current ratio of secondary winding for protection in terms of rated secondary load in accuracy classes 5P and 10P for the device CT TLSH-10-5
The estimated value of the resistance of the secondary winding device CT TLSH-10-5 DC are shown in Table 2;
Table 2 Calculated values of the resistance of the secondary winding device CT TLSH-10-5 DC
Instrument current transformer TLSH-10-5 for differential protection are available on request;
General view of the device shown in Figure 1;
Figure 1: General view of the instrument current transformer TLSH-10-5
 Dimensions and weight of the device CT TLSH-10-5 are shown in Table 3;
Table 3 Dimensions and weight of the device CT TLSH-10-5
The transformers are manufactured in climatic design "U3", "T3" and are intended for indoor use in:
Height above the sea level - no more than 1000 m.
- Ambient temperature ("F3") - from -45 ° C to +55 ° C;
- Ambient temperature ("T3") - from -10 ° C to +60 ° C;
- Environment explosive, without dust, reactive gases and vapors in concentrations destroy metal and insulation;
- Working position - any;
- Devices intended for use in electrical exposed lightning surges at ordinary measures gromozaschity;
- Internal insulation casting, heat resistance class "B" and flammability class FH (PG) 1;
- Instruments earthquake resistant when exposed to earthquake intensity 8 points on the MSK-64 at the facility level above ground level up to 70m;
- Appliances intended to be sold in AS, with class security for 3H-001 NP-97 and 2 seismic category for NP-031-01;
- Devices comply with immunity to electromagnetic interference to influence the magnetic field of industrial frequency;
- Equipment CT TLSH-10-5 conform to standards of industrial radio class A, Group 1;
In current transformers may be used to account for the secondary windings, Class 0,2 S and 0,5 S with the value of the secondary load below 25% of nominal;
The minimum weight for the device current transformer windings TLSH-10-5 accuracy classes 0,2 S and 0,5 S is 1B · A;
The certificate on the current transformers with secondary windings for accounting accuracy classes 0,2 S and 0,5 S indicates the measured current and the angular error at rated secondary burden 1B · A;
Transformers are supplied with protective transparent cover for separate sealing of secondary findings;
Be sure to connect to the bus terminal of the transformer, marked "W"!
The manufacturer guarantees that the quality of the instrument current transformer TLSH-10-5 technical requirements specifications provided the customer terms and conditions of storage, transportation, installation, operation, and its specified operational documentation.
Photos: TLSH-10-5
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