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Description


IEK TRP dismountable 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 of IEC 60044-1.

TTI current transformers are introduced into the State register of measuring equipment under No. 38847-08. Establishment certificate of measuring equipment CN.C.34010.A No. 32979.

Range


Transformer type Name Rated secondary load, VA Rated primary transformer current, A Multiple package amount, pcs Product ID
TRP-23 current transformer 300/5 1,5VA, acc. class 0.5 1,5 300 20 ITT23-2-D015-0300
TRP-23 current transformer 400/5 2,5VA, acc. class 0.5 2,5 400 20 ITT23-2-D025-0400
TRP-58 current transformer 250/5 1VA, acc. class 0.5 1 250 10 ITT58-2-D015-0250
TRP-58 current transformer 300/5 1,5VA, acc. class 0.5 1,5 300 10 ITT58-2-D015-0300
TRP-58 current transformer 500/5 1,5VA, acc. class 0.5 1,5 400 10 ITT58-2-D015-0400
TRP-58 current transformer 500/5 2,5VA, acc. class 0.5 2,5 500 10 ITT58-2-D025-0500
TRP-58 current transformer 600/5 2,5VA, acc. class 0.5 2,5 600 10 ITT58-2-D025-0600
TRP-88 current transformer 1000/5 5VA, acc. class 0.5 5 1000 10 ITT88-2-D050-1000
TRP-88 current transformer 400/5 1,5VA, acc. class 0.5 1,5 400 10 ITT88-2-D015-0400
TRP-88 current transformer 500/5 1,5VA, acc. class 0.5 1,5 500 10 ITT88-2-D015-0500
TRP-88 current transformer 600/5 2,5VA, acc. class 0.5 2,5 600 10 ITT88-2-D025-0600
TRP-88 current transformer 800/5 2,5VA, acc. class 0.5 2,5 800 10 ITT88-2-D025-0800
TRP-812 current transformer 1000/5 5VA, acc. class 0.5 5 1000 10 ITT812-2-D050-1000
TRP-812 current transformer 1200/5 6VA, acc. class 0.5 6 1200 10 ITT812-2-D060-1200
TRP-812 current transformer 1250/5 7,5VA, acc. class 0.5 7,5 1250 10 ITT812-2-D075-1250
TRP-812 current transformer 1500/5 7,5VA, acc. class 0.5 7,5 1500 10 ITT812-2-D075-1500
TRP-816 current transformer 1000/5 10VA, acc. class 0.5 10 1000 5 ITT816-2-D100-1000
TRP-816 current transformer 1500/5 15VA, acc. class 0.5 15 1500 5 ITT816-2-D150-1500
TRP-816 current transformer 2000/5 15VA, acc. class 0.5 15 2000 5 ITT816-2-D150-2000
TRP-816 current transformer 2500/5 15VA, acc. class 0.5 15 2500 5 ITT816-2-D150-2500
TRP-816 current transformer 3000/5 20VA, acc. class 0.5 20 3000 5 ITT816-2-D200-3000

Advantages


  • TRP casing is made of self-extinguishing plastic.
  • Each transformer set includes a cover shielding the secondary terminals.
  • Warranty period 5 years.
  • TRP transformers are completed with screws and nuts for conductors’ fixation.
  • Design Features


    Transformer body and core are dismountable. They are connected with the help of machine screws. Current transformer sides corresponding to the primary winding’s in and out are indicated as L1 and L2; secondary winding outs are indicated as I1 and I2.
    Transformer casing is made of self-extinguishing plastic ensuring fire and electrical safety. Secondary winding terminals are covered with a transparent shield ensuring exploitation safety. Besides, the shield can be sealed. It is especially important in the electric power metering circuits allowing excluding unauthorized access to the secondary winding terminals.

    Technical Features


    Feature Transformer modifications
    TRP-23 TRP-58 TRP-88 TRP-812 TRP-816
    Rated voltage Un, kV     0,66    
    Max. operating voltage, kV     0,72    
    Rated frequency fn, Hz     50    
    Rated primary current I1n, A 300, 400 250, 300, 400, 500, 600 400, 500, 600, 800, 1000 1000, 1200, 1250, 1500 1500, 2000, 2500, 3000
    Rated secondary operating current I2nom, A     5    
    Rated secondary load S2n, with power factor cosφ=0,8 VA     1,5-2,5    
    Accuracy class     0,5    
    Secondary coil security factor KBn     5    
    Test one-minute voltage of 50Hz, kV     3    
    Max. weight, kg 0,75 0,9 1,05 1,25 4,3

     

    Secondary coil max. error limits

    Accuracy class Primary current, % of rated value Max. error limit Load limit, % of rated value
    current, % angular, min
    0,5 5 ± 1,5 ± 90’ ± 2,7 grad  
      20 ± 0,75 ± 45’ ± 1,35 grad 25¸100
      100—120 ± 0,5 ± 30’ ± 0,9 grad  

    Overall Dimensions


    Type Size, mm
    , mm , mm 1, mm ,  mm 1, mm L, mm
    TRP–23 53,5 89 21 115 32 40
    TRP–58 79,5 115 50 150 80 32
    TRP–88 109 145 81 150 81 32
    TRP–812 109 145 80 190 121 32
    TRP–816 121 186 72 245 147 40
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