Electrical measuring instruments >> transformers industrial >> current transformers >> 0,66kV voltage class


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Current transformer TSHL-0,66-II (TSHL-0,66-2, TSHL0,66-11, TSHL0,66II, TSHL 0,66 II, TSHL0,66-II, TSHL0,66 II, TSHL-0,66II, TSHL 0,66II)
Current transformer TSHL-0,66-II is designed to signal measurement information instrumentation in plants AC 50Hz with rated voltage up to 0.66 kV.
Technical characteristics of the instrument current transformers TSHL-0,66-II:
Accuracy class - 0,5; 0,5 S, 0,2; 0,2 S;
Number of windings - 1;
Rated current of the CT device TSHL-0,66-II - 300A, 400A, 600A, 800A, 1000A, 1500A, 2000A, 2500A;
Maximum operating primary current - 320A, 400A, 630A, 800A, 1000A, 1600A, 2000A, 2500A;
Rated secondary current of the current transformer unit TSHL-0,66-II - 1A, 5A;
Rated secondary burden:
- At cosφ = 1 - 1 B · A-2, 5 B · A;
- At cosφ = 0,8 - 3V-5V · A · A · A 3V-10V · A;
Safety factor of winding for measurement instrument CT TSHL-0,66-II:
- In accuracy class 0.5 - 10;
- In accuracy class 0,2 S, 0,5 S - 5;
The calculated values ​​of the resistance unit CT TSHL-0,66-II, reduced to a temperature of 20 º C are shown in Table 1;
Table 1 Calculated values ​​of resistance of the device current transformer CT TSHL-0,66-III, reduced to a temperature of 20 º C
Rated primary current
The resistance of the secondary windings of the DC with accuracy class
0,2 S, 0,5 S
0.079 Ohm
0.8 Ohm
0.109 Ohm
0.108 Ohm
0.179 Ohm
0.168 Ohm
0.209 Ohm
0.189 Ohm
0.209 Ohm
0.253 Ohm
0.339 Ohm
0.332 Ohm
0.479 Ohm
0.463 Ohm
0.629 Ohm
0.603 Ohm
Dimensions and weight of the device current transformer TSHL-0,66-II are shown in Figure 1 and Table 2;
Table 2: Dimensions and weight of the device current transformer TSHL-0,66-II
Rated primary current
300A, 400A, 600A
800A, 1000A, 1500A, 2000A, 2500A
Weight - 1.73 kg (up to 600A), 1.76 kg (800A-2500A);
Figure 1 Dimensions of the device current transformer TSHL-0,66-II
TSHL-0,66-II - Current transformer - Drawing.
The housing CT TSHL-0,66-II is made ​​of self-extinguishing hard inflammable materials;
The transformers are manufactured in model "U" are designed for operation in the following conditions:
Height above the sea level - no more than 1000 m.
Ambient temperature
- In operation - from -45 ° C to +70 ° C;
- Environment explosive, without dust, reactive gases and vapors in concentrations destroy metal and insulation;
- Working position - any;
Instrument current transformer TSHL-0,66-II has a cast from epoxy resin insulation grevostoykosti class "B" and Flammability PG1;
Earthquake-proof devices when exposed zemletraseny intensity of 8 points on the MSK-64 at the facility level above ground level up to 70m;
Instrument current transformer TSHL-0,66-II is intended for delivery to the speakers, meet safety class 3H for NP-001-97 and 2 seismic category for NP-031-01;
Warranty period - 8 years from the date of entry into operation of the transformer, but not more than 8.5 years from the date of shipment from the factory;
The warranty applies to devices CT TSHL-0,66-II, after January 1, 2005;
Service life - 30 years;
Devices CT TSHL-0,66-II equipped with protective transparent cover for separate sealing of secondary findings;
In transformers may be used to account for the secondary windings, accuracy classes 0,2 S and 0,5 S with the value of the secondary load below 25% of nominal;
Minimum permissible load current transformer unit TSHL-0,66-II for the windings of 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;
The manufacturer guarantees that the quality of the instrument current transformer TSHL-0,66-II technical requirements specifications provided the customer terms and conditions of storage, transportation, installation, operation, and its specified operational documentation.

Photos: TSHL-0,66-II

TSHL-0,66-II transformer image.
TSHL-0,66-II transformer image.
TSHL-0,66-II transformer scheme.
TSHL-0,66-II transformer scheme.

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