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 TPL-10-M (TPL10M, TPL 10 M, TPL10-M, TPL10 M, TPL-10M, TPL 10M)
Current transformer TPL-10-M is designed for signal transmission 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 TPL-10-M:
The number of secondary windings - 2;
Rated voltage - 10kV;
Maximum operating voltage instrument transformer current TPL-10-M - 12kV;
Rated frequency AC - 50Hz or 60Hz;
Rated secondary current of the current transformer unit TPL-10-M - 1A, 5A;
Rated primary current - 5A, 10A, 15A, 20A, 30A, 40A, 50A, 75A, 80A, 100A, 150A, 200A, 300A, 400A, 600A, 750A, 800A, 1000A;
Accuracy class of the instrument current transformer TPL-10-M:
- Secondary winding for measurement - 0,5; 0,5 S, 0,2 S, 1;
- Secondary protection - 10P;
Rated secondary current transformer load device TPL-10-M with a power factor:
- Cos φ = 1 - secondary winding for measurement - 1 V · A-2, 5 V · A;
- Cos φ = 0,8 - secondary winding for measurement - 3V-30V · A · A;
- Cos φ = 0,8 - secondary protection - 15V · A;
Rated current ratio of secondary winding for protection - not less than 10-18;
Multiplicity three seconds nominal thermal current instrument transformer current TPL-10-M - 45, 60;
Multiplicity current withstand - 150, 200, 265;
Nominal factor of safety devices for the secondary current transformer measuring device TPL-10-M are listed in Table 1;
Table 1 Nominal safety factor of instruments for measuring the secondary current transformer unit TPL-10-M
The estimated value of the resistance of the secondary winding device CT TPL-10-M DC are shown in Table 2;
Table 2 Calculated values of the resistance of the secondary winding device CT TPL-10-M DC
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 instrument transformer current TPL-10-M are listed 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 instrument transformer current TPL-10-M
General view of the device shown in Figure 1;
Figure 1: General view of the instrument current transformer TPL-10-M
 Unit weight CT TPL-10-M - 24kg-29kg (depending on the version);
The transformers are manufactured in climatic design "U2", "T2" and are intended for indoor use in:
Height above the sea level - no more than 1000 m.
- Ambient temperature ("U2") - from -45 ° C to +50 ° C;
- Ambient temperature ("T3") - from -10 ° C to +50 ° C;
- Environment explosive, without dust, reactive gases and vapors in concentrations destroy metal and insulation;
- Working position - any;
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 TPL-10-M accuracy class 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;
The manufacturer guarantees that the quality of the instrument current transformer TPL-10-M technical requirements specifications provided the customer terms and conditions of storage, transportation, installation, operation, and its specified operational documentation.
Photos: TPL-10-M
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