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TTI current transformers

Description


TTI current transformers are intended for:

  • Applying in electric power metering circuits for calculations with consumers;
  • Applying in commercial electric power metering circuits;
  • Transmitting metering information signals to measuring, protection and control devices.

These transformers correspond to the requirements IEC 60044-1.

TTI current transformers were awarded silver medal of the International Contest “Best Electric Equipment 2005” sponsored by the Ministry of Industry and Energy of the Russian Federation, Gosstandart RF, ANO Soyuzexpertiza, for their high quality ratings.

TTI current transformers are introduced into the State register of measuring equipment under No. 28139-07. Establishment certificate of measuring equipment CN.C.34.083.A No. 28362.

Range


Transformer type Name Rated secondary load, VA Rated primary current, A Package amount, pcs Product ID
individual multiple
TTI- 5/5 5 VA 0,5 5 5  
36 ITT10 2 05 0005
TTI- 10/5 5 VA 0,5 5 10  
36 ITT10 2 05 0010
TTI- 15/5 5 VA 0,5 5 15  
36 ITT10 2 05 0015
TTI- 20/5 5 VA 0,5 5 20  
36 ITT10 2 05 0020
TTI- 25/5 5 VA 0,5 5 25  
36 ITT10 2 05 0025
TTI- 30/5 5 VA 0,5 5 30  
36 ITT10 2 05 0030
TTI- 40/5 5 VA 0,5 5 40  
36 ITT10 2 05 0040
TTI- 50/5 5 VA 0,5 5 50  
36 ITT10 2 05 0050
TTI- 60/5 5 VA 0,5 5 60  
36 ITT10 2 05 0060
TTI- 75/5 5 VA 0,5 5 75  
36 ITT10 2 05 0075
TTI- 80/5 5 VA 0,5 5 80  
36 ITT10 2 05 0080
TTI- 100/5 5 VA 0,5 5 100  
36 ITT10 2 05 0100
TTI- 120/5 5 VA 0,5 5 120  
36 ITT10 2 05 0120
TTI- 125/5 5 VA 0,5 5 125  
36 ITT10 2 05 0125
TTI- 150/5 5 VA 0,5 5 150  
36 ITT10 2 05 0150
TTI- 200/5 5 VA 0,5 5 200  
36 ITT10 2 05 0200
TTI- 250/5 5 VA 0,5 5 250  
36 ITT10 2 05 0250
TTI- 300/5 5 VA 0,5 5 300  
36 ITT10 2 05 0300
TTI- 400/5 5 VA 0,5 5 400  
36 ITT10 2 05 0400
TTI- 500/5 5 VA 0,5 5 500  
36 ITT10 2 05 0500
TTI- 600/5 5 VA 0,5 5 600  
36 ITT10 2 05 0600
TTI- 800/5 5 VA 0,5 5 800  
36 ITT10 2 05 0800
TTI- 1000/5 5 VA 0,5 5 1000  
36 ITT10 2 05 1000
TTI- 100/5 10 VA 0,5 10 100  
36 ITT10 2 10 0100
TTI- 120/5 10 VA 0,5 10 120  
36 ITT10 2 10 0120
TTI- 125/5 10 VA 0,5 10 125  
36 ITT10 2 10 0125
TTI- 150/5 10 VA 0,5 10 150  
36 ITT10 2 10 0150
TTI- 200/5 10 VA 0,5 10 200  
36 ITT10 2 10 0200
TTI- 250/5 10 VA 0,5 10 250  
36 ITT10 2 10 0250
TTI- 300/5 10 VA 0,5 10 300  
36 ITT10 2 10 0300
TTI- 400/5 10 VA 0,5 10 400  
36 ITT10 2 10 0400
TTI- 500/5 10 VA 0,5 10 500  
36 ITT10 2 10 0500
TTI- 600/5 10 VA 0,5 10 600  
36 ITT10 2 10 0600
TTI- 800/5 10 VA 0,5 10 800  
36 ITT10 2 10 0800
TTI- 1000/5 10 VA 0,5 10 1000  
36 ITT10 2 10 1000
TTI-30 150/5 5 VA 0,5 5 150  
40 ITT20 2 05 0150
TTI-30 200/5 5 VA 0,5 5 200  
40 ITT20 2 05 0200
TTI-30 250/5 5 VA 0,5 5 250  
40 ITT20 2 05 0250
TTI-30 300/5 5 VA 0,5 5 300  
40 ITT20 2 05 0300
TTI-30 200/5 10 VA 0,5 10 200  
40 ITT20 2 10 0200
TTI-30 250/5 10 VA 0,5 10 250  
40 ITT20 2 10 0250
TTI-30 300/5 10 VA 0,5 10 300  
40 ITT20 2 10 0300
TTI-40 300/5 5 VA 0,5 5 300  
40 ITT30 2 05 0300
TTI-40 400/5 5 VA 0,5 5 400  
40 ITT30 2 05 0400
TTI-40 500/5 5 VA 0,5 5 500  
40 ITT30 2 05 0500
TTI-40 600/5 5 VA 0,5 5 600  
40 ITT30 2 05 0600
TTI-40 300/5 10 VA 0,5 10 300  
40 ITT30 2 10 0300
TTI-40 400/5 10 VA 0,5 10 400  
40 ITT30 2 10 0400
TTI-40 500/5 10 VA 0,5 10 500  
40 ITT30 2 10 0500
TTI-40 600/5 10 VA 0,5 10 600  
40 ITT30 2 10 0600
TTI-60 600/5 10 VA 0,5 10 600  
32 ITT40 2 10 0600
TTI-60 750/5 10 VA 0,5 10 750  
32 ITT40 2 10 0750
TTI-60 800/5 10 VA 0,5 10 800  
32 ITT40 2 10 0800
TTI-60 1000/5 10 VA 0,5 10 1000  
32 ITT40 2 10 1000
TTI-60 600/5 15 VA 0,5 15 600  
32 ITT40 2 15 0600
TTI-60 750/5 15 VA 0,5 15 750  
32 ITT40 2 15 0750
TTI-60 800/5 15 VA 0,5 15 800  
32 ITT40 2 15 0800
TTI-60 1000/5 15 VA 0,5 15 1000  
32 ITT40 2 15 1000
TTI-85 750/5 15 VA 0,5 15 750  
12 ITT50 2 15 0750
TTI-85 800/5 15 VA 0,5 15 800  
12 ITT50 2 15 0800
TTI-85 1000/5 15 VA 0,5 15 1000  
12 ITT50 2 15 1000
TTI-85 1200/5 15 VA 0,5 15 1200  
12 ITT50 2 15 1200
TTI-85 1500/5 15 VA 0,5 15 1500  
12 ITT50 2 15 1500
TTI-100 1000/5 15 VA 0,5 15 1000  
16 ITT60 2 15 1000
TTI-100 1200/5 15 VA0,5 15 1200  
16 ITT60 2 15 1200
TTI-100 1250/5 15 VA 0,5 15 1250  
16 ITT60 2 15 1250
TTI-100 1500/5 15 VA 0,5 15 1500  
16 ITT60 2 15 1500
TTI-100 1600/5 15 VA 0,5 15 1600  
16 ITT60 2 15 1600
TTI-100 2000/5 15 VA 0,5 15 2000  
16 ITT60 2 15 2000
TTI-100 2500/5 15 VA 0,5 15 2500  
16 ITT60 2 15 2500
TTI-100 3000/5 15 VA 0,5 15 3000  
16 ITT60 2 15 3000
TTI-125 1500/5 15 VA 0,5 15 1500  
10 ITT70 2 15 1500
TTI-125 2000/5 15 VA 0,5 15 2000  
10 ITT70 2 15 2000
TTI-125 2500/5 15 VA 0,5 15 2500  
10 ITT70 2 15 2500
TTI-125 3000/5 15 VA 0,5 15 3000  
10 ITT70 2 15 3000
TTI-125 4000/5 15 VA 0,5 15 4000  
10 ITT70 2 15 4000
TTI-125 5000/5 15 VA 0,5 15 5000  
10 ITT70 2 15 5000
TTI- 5/5 5 VA 0,5S 5 5  
36 ITT10 3 05 0005
TTI- 10/5 5 VA 0,5S 5 10  
36 ITT10 3 05 0010
TTI- 15/5 5 VA 0,5S 5 15  
36 ITT10 3 05 0015
TTI- 20/5 5 VA 0,5S 5 20  
36 ITT10 3 05 0020
TTI- 25/5 5 VA 0,5S 5 25  
36 ITT10 3 05 0025
TTI- 30/5 5 VA 0,5S 5 30  
36 ITT10 3 05 0030
TTI- 40/5 5 VA 0,5S 5 40  
36 ITT10 3 05 0040
TTI- 50/5 5 VA 0,5S 5 50  
36 ITT10 3 05 0050
TTI- 60/5 5 VA 0,5S 5 60  
36 ITT10 3 05 0060
TTI- 75/5 5 VA 0,5S 5 75  
36 ITT10 3 05 0075
TTI- 80/5 5 VA 0,5S 5 80  
36 ITT10 3 05 0080
TTI- 100/5 5 VA 0,5S 5 100  
36 ITT10 3 05 0100
TTI- 120/5 5 VA 0,5S 5 120  
36 ITT10 3 05 0120
TTI- 125/5 5 VA 0,5S 5 125  
36 ITT10 3 05 0125
TTI- 150/5 5 VA 0,5S 5 150  
36 ITT10 3 05 0150
TTI- 200/5 5 VA 0,5S 5 200  
36 ITT10 3 05 0200
TTI- 250/5 5 VA 0,5S 5 250  
36 ITT10 3 05 0250
TTI-30 200/5 5 VA 0,5S 5 200  
40 ITT20 3 05 0200
TTI-30 250/5 5 VA 0,5S 5 250  
40 ITT20 3 05 0250
TTI-30 300/5 5 VA 0,5S 5 300  
40 ITT20 3 05 0300
TTI-40 400/5 5 VA 0,5S 5 400 1 40 ITT30 3 05 0400
TTI-40 500/5 5 VA 0,5S 5 500 1 40 ITT30 3 05 0500
TTI-40 600/5 5 VA 0,5S 5 600 1 40 ITT30 3 05 0600

Advantages


  • Copper tinned bus used in TTI-A transformers gives opportunity of connecting both copper and aluminum conductors.
  • Each transformer set includes a cover shielding the secondary terminals ensuring exploitation safety.
  • Inspection occurrence is established by means of a verification mark impression on the TTI casing and in the passport.
  • Weight and dimensions are by 10-20% smaller than that of comparable transformers of other domestic manufacturers.
  • Average service life 25 years.

Design Features


Transformer body is not dismountable. It is sealed with a sticker making it impossible to access to the secondary winding.Universal TTI current transformer window provides for installing cables and buses of various sizes and configurations as the primary winding.
Cover shielding the terminals can be sealed. It is especially essential in electric power metering circuits because it allows excluding a non-authorized access to the secondary terminals.TTI-30 ÷ TTI-125 are completed with a bracket for adjusting a bus in the transformer’s window.
Integrated copper tinned bus used in TTI-A transformers gives opportunity of connecting both copper and aluminum conductors. TTI-A transformers are completed with screws and nuts for conductor fixation.

Delivery package includes special supports for adjusting panel equipment onto the mounting panel.

Transformer body is made of self-extinguishing plastic ensuring fire and electric safety.  
 

Technical Features



FeatureTransformer modifications
TTI-TTI-30TTI-40TTI-60TTI-85TTI-100TTI-125
Rated voltage Un 
 
 
0,66 
 
 
Max. operating voltage, kV 
 
 
0,72 
 
 
Rated frequency fn, Hz 
 
 
50 
 
 
Rated primary current I1n, A5; 10; 15; 20; 25; 30; 40; 50; 60; 75; 80; 100; 120; 125; 150; 200; 250; 300; 400; 500; 600; 800; 1000150; 200; 250; 300300; 400; 500; 600600; 750; 800; 1000750; 800; 1000; 1200; 15001500; 1600; 2000; 2500; 30001500; 2000; 2500; 3000; 4000; 5000
Rated secondary operating current I2nom, A5555555
Rated secondary load S2n, with power factor cosφ=0,8 V·A5; 105; 105; 1010; 15151515
Accuracy class 
 
 
0,5; 0,5S 
 
 
Rated transformer ratio nn determined using a formula 
 
 
nn=I1n/I2n 
 
 
Secondary coil security factor KBn 
 
 
5 
 
 
Test one-minute voltage of 50Hz, kV 
 
 
3 
 
 
Max. weight, kg0,60,60,380,60,75 0,82 0,89 0,99 1,020,80 0,85 0,94 1,10 1,161,00 1,15 1,45 1,60 1,90 2,20

 

Secondary winding max. error limits

Accuracy classPrimary current, % of rated valueMax. error limitLoad limit, % of rated value
current, %angular, min
0,5S1± 1,5± 90'± 2,7 grad 
 
5± 0,75± 45'± 1,35 grad25÷100
 
20± 0,5± 30'± 0,9 grad 
 
100 120± 0,5± 30'± 0,9 grad 
0,55± 1,5± 90'± 2,7 grad 
 
20± 0,75± 45'± 1,35 grad25÷100
 
100 120± 0,5± 30'± 0,9 grad 

Overall Dimensions


TTI-A TTI-30..125


Type Size, mm
1 2 1 2 L L1 L2 D D1
TTI- from 5/5 300/5 87 62 25 103 87 3 120 48 34 8 8 X 16
TTI- from 400/5, 500/5 87 62 26 103 87 6 118 48 34 13 12 X 27
TTI- from 600/5 1000/5 87 62 26 103 87 12 118 48 34 13 12 X 36
TTI-30 dim. 11 75 62 - 98 82 - - 42 34 - -
TTI-30 dim. 2 2 84 62 - 102 86 - - 48 34 - -
TTI-40 75 62 - 98 82 - - 42 34 - -
TTI-60 101 62 - 127 111 - - 42 34 - -
TTI-85 128 62 - 157 145 - - 42 34 - -
TTI-100 144 62 - 154 138 - - 42 34 - -
TTI-125 191 62 - 220 205 - - 42 34 - -


TTI-30 200/5A 5VA, TTI-30 250/5A 5VA, TTI-30 300/5A 5VA, TTI-30 300/5A 10VA current transformers.

TTI-30 150/5A 5 VA, TTI-30 200/5A 10VA, TTI-30 250/5A 10VA current transformers.


Bus and Cable Holes Dimensions


TTI-30 dim. 1 TTI-30 dim. 2 TTI-40

TTI-60 TTI-85
TTI-100 TTI-125
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