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TLK-35

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Current transformer TLK-35 (TLK35, TLK 35)
 
Current transformer TLK-35 is designed to transmit the signal measurement data measurement devices, protection, automation, alarm and control circuits to isolate the secondary connections of high-voltage electrical installations AC.
Transformers are designed for outdoor use in open-voltage switchgear 35kV.
 
Technical characteristics of the instrument current transformers TLK-35:
 
The number of secondary windings - 2;
Rated voltage - 35kV;
Maximum operating voltage of the device current transformer TLK-35 - 40.5 kV;
Rated frequency AC - 50Hz or 60Hz;
Rated secondary current of the current transformer unit TLK-35 - 1A, 5A;
Rated primary current - 5A, 10A, 15A, 20A, 30A, 40A, 50A, 75A, 80A, 100A, 150A, 200A, 300A, 400A, 500A, 600A, 800A, 1000A, 1200A, 1500A, 2000A, 3000A;
Accuracy class of the instrument current transformer TLK-35:
- Secondary winding for measurement - 0,2 S, 0,2, 0,5 S, 0,5, 1, 3;
- Secondary protection - 5P, 10P;
Rated secondary current transformer load device TLK-35 with a power factor:
- Cos φ = 0,8 - secondary winding for measurement - 5V · A · A 10V, 15V · A · A 20 V, 30 V · A;
- Cos φ = 0,8 - secondary protection - 5V · A · A 10V, 15V · A · A 20 V, 30 V · A;
Rated current ratio of secondary winding device CT TLK-35 for protection - 3-12;
Nominal safety factor of instruments for measuring the secondary - 10, 15;
Three-second thermal current instrument transformer current TLK-35:
- At rated primary current 5A - 0.6 kA
- At rated primary current 10A, 15A - 1kA;
- At rated primary current 20A, 30A - 2ka;
- At rated primary current 40A - 6.1 kA
- At rated primary current 50A, 75A - 8.1 kA
- At rated primary current 80A - 15.3 kA
- At rated primary current 100A - 20.1 kA
- At rated primary current 150A-1000A - 31.5 kA
- At rated primary current 1200A, 1500A - 50kA;
- At rated primary current 2000A - 50kA;
- At rated primary current 2500A, 3000A - 100 kA;
Rated peak withstand current transformer unit TLK-35:
- At rated primary current 5A - 1.5 kA
- At rated primary current 10A, 15A - 2.6 kA
- At rated primary current 20A, 30A - 5.2 kA
- At rated primary current 40A - 15.6 kA
- At rated primary current 50A, 75A - 20.8 kA
- At rated primary current 80A - 39.1 kA
- At rated primary current 100A - 51.3 kA
- At rated primary current 150A-1000A - 80kA;
- At rated primary current 1200A, 1500A - 125kA;
- At rated primary current 2000A - 125kA;
- At rated primary current 2500A, 3000A - 250kA;
Test voltage instrument transformer current TLK-35:
- One-minute power frequency - 95kV;
- Lightning impulse full - 220 kW;
The estimated value of the resistance of the secondary winding device CT TLK-35 DC are listed in Table 1;
 
Table 1 Calculated values ​​of the resistance of the secondary windings of the current transformer unit TLK-35 DC
Rated current of the device CT-35 TLK
Accuracy class
DC resistance of the windings
5A, 10A, 20A, 40A, 50A, 80A, 100A
№ 1
#2
0.06 Ohm
0.09 Ohm
15A, 30A, 75A
№ 1
#2
0.09 Ohm
0.13 Ohm
200A, 300A, 600A
№ 1
#2
0.12 Ohm
0.13 Ohm
500A
№ 1
#2
0.08 Ohm
0.09 Ohm
400A, 800A
№ 1
#2
0.16 Ohm
0.15 Ohm
1000A
№ 1
#2
0.19 Ohm
0.26 Ohm
1200A
№ 1
#2
0.31 Ohm
0.30 Ohm
1500A
№ 1
#2
0.30 Ohm
0.41 Ohm
2000A
№ 1
#2
0.25 Ohm
0.40 Ohm
3000A
№ 1
#2
0.38 Ohm
0.62 Ohm
 
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 unit CT TLK-35 are shown in Table 2;
 
Table 2 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 unit CT TLK-35
Rated secondary current transformer load device TLK-35, VA
3
5
10
15
20
30
40
50
60
75
100
Ratio of transformation
Rated current ratio
5/5, 10/5, 20/5, 40/5, 50/5, 80/5, 100/5, 200/5, 400/5
31
23
13
10
7
5
3
3
2
2
1
15/5, 30/5, 75/5, 150/5, 300/5, 600/5
35
27
16
12
9
6
5
4
3
2
2
500/5
32
24
14
10
8
5
4
3
2
2
1
800/5
30
24
16
12
9
6
5
4
3
2
2
1000/5
32
25
18
13
11
8
6
5
4
3
2
1200/5
33
27
19
15
12
9
7
6
5
4
3
1500/5
27
24
18
15
13
10
8
6
6
5
3
2000/5
33
27
22
18
15
12
10
8
7
6
4
2500/5
33
25
21
18
16
13
11
9
8
7
5
3000/5
34
24
21
19
17
14
12
10
9
7
6
 
General view of the device shown in Figure 1;
 
Figure 1: General view of the instrument current transformer TLK-35
TLK-35 - current transformer
 
Dimensions and weight of the unit CT TLK-35 are shown in Table 3;
 
Table 3 Dimensions and weight of the unit CT TLK-35
Dimensions.
Weight
A
B
C
H
245 mm ± 2,5 mm
300mm-3mm
80 mm ± 1,2 mm
336mm-3mm
50 kg ± 2,5 kg
 
The transformers are manufactured in climatic design "UHL" and are intended for use in:
Height above the sea level - no more than 1000 m.
- Ambient temperature with the heat the air inside the switchgear - from -60 ° C to +50 ° C;
- Environment explosive, without dust, reactive gases and vapors in concentrations destroy metal and insulation;
- Working position - vertical;
- Internal insulation casting, heat resistance class "B" and flammability class FH (PG) 1;
- External insulation cast, thermal class «Y» and flammability class FH (PG) 3;
- 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;
- Instruments CT TLK-35 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 TLK-35 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;
Can manufacture transformers with different transformation ratios of secondary windings;
The manufacturer guarantees that the quality of the instrument current transformer TLK-35 technical requirements specifications provided the customer terms and conditions of storage, transportation, installation, operation, and its specified operational documentation.

Photos: TLK-35

TLK-35 transformer image.
TLK-35 transformer image.


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