Lithuania
+370 5 213 3939

ELFITA GRODNO
Belarusia
+375 152 484480
LOW-VOLTAGE INDOOR

CURRENT TRANSFORMERS

DESIGN AND MANUFACTURE
Production
APPLICATION
Low-voltage indoor current transformers type TAL-0,72 N3 (transformers), are gauges of high preciseness Thoroughly these transformers are used for the commercial accounting and other industrial applications, which are situated in the sets of the alternating current of 50 or 60Hz frequency.

OPERATING CONDITIONS
The current transformers are designed for the operation in indoor (from -45ºC up to +40ºC) conditions. The average value of humidity should not exceed 95% and the altitude should not exceed 1000 m.

CONSTRUCTION
The current transformers have a ring-type or rectangular core with an insulating shall. A distributed secondary winding is toroidally wounded on this core. The core and coil is assembled in nom-dismountable unit made from fire proof thermoplastic. The modifications of transformers are following:
  • support-type with relatively large number of primary winding turns which are wounded on ring-type core
Transformation ratioAccuracy classBurden, VA
20/5A, 30/5A, 40/5A
0,5S
5
50/5A, 75/5A, 100/5A
150/5A
0,5S
5;10
200/5A
0,5S
10
0,2S
5
  • support-type with opening for the conductor of Ø=25mm and primary bus-bar who max. dimension is 30x11mm in the middle of the coveri
Transformation ratioAccuracy classBurden, VA
200/5A
0,5S
5
300/5A, 400/5A
500/5A, 600/5A
0,5S
10
0,2S
5
  • bus-bar type with rectangular opening in the middle of the cover. The max. dimension of bus-bar is 100x12mm
Transformation ratioAccuracy classBurden, VA
800/5A
0,5S
10
0,2S
5
1000/5A,1250/5A
1500/5A
0,5S; 0,2S
10
2000/5A
0,5S
10
0,2S
15

Both first modifications are available with dismountable support designed for the mounting of the measuring system to the base.The metal data table, the secondary double terminals, the contact for the switching of the voltage circuit to the measuring gauges are placed under a transparent sealable cover. The transformers TAL- 0,72 N3 are tested metrologically, sealed and completely secured from the unconscientious electric energy consumers.

WARRANTY
The given warranty term for the transformers is two years since starting of their operation and is not more than three years after sales date.

TECHNICAL DATA
Rated short-time termal current 60 x Ipn
Rated dynamic short-time current150 x Ipn
Highest voltage for equipment Um, kV 0,72
Rated power frequency, Hz 50 or 60
Instrument security factor FS< 6
Insulation classE
Mass ,kg( 0,8….1,2 )
JSC "ELFITA", Vytenio g. 50, Vilnius, Lithuania, e-mail: info@elfita.lt, sabonis@elfita.lt, elfitabel@tut.by (Belarusia)
ISD - Interneto Svetainių dizainas