TL_ Measuring transformer
The TL_ instrument transformer is a transformer designed for use with one or more through primary conductors, commonly known as busbars. This type of current transformer is enclosed in a rugged plastic housing to provide the necessary protection. It is suitable for applications where the primary current currents are high. Thus, it is ideal for power distribution systems or industrial applications where there are high current levels.
The TL_ instrument transformer is a transformer designed for use with one or more through primary conductors, commonly known as busbars. This type of current transformer is enclosed in a rugged plastic housing to provide the necessary protection. It is suitable for applications where the primary current currents are high. Thus, it is ideal for power distribution systems or industrial applications where there are high current levels.
Technical details
- Dimensions
- Description
- Features
- Technical data
- Ratios
- Standards
TL_ instrument transformers have a transformation ratio for primary from 750 A up to 5000 A and secondary in 1 A or 5 A. The accuracy can be 0.5, 1 and 3 according to IEC 61869-2.
Special accuracies on request: 0.5s; 0.2 and 0.2s.
Model/ Bar/ Cable
TL2 / 100×20 / Ø20
TL3 / 100×30 / Ø30
TL4 / 100×60 / Ø60
General technical data
- Factor of safety: Fs < 5
- Operating voltage (maximum): 720 V
- Test voltage: 3 kV AC (1min)
- Frequency: 50-60 hz
- Rated thermal short-circuit current: Ith limited by cable or primary busbar dimensions
- Rated dynamic current: IDyn = 2,5 x Ith
- Continuous overload: ID = 1.2 x IN
- Operating temperature: -10 ... 50 ºC
- Accuracy: 0.5 - 1 - 3 (0.2s; 0.2 and 0.5s on request)
- Nominal secondary current: /5 or /1A
- Insulation class: Class E // Class B (130 ºC) available
Details of the product ratio table:
- IEC 185
- UNE EN 61869 (IEC 61869)
- VDE 0414
- IEC 801/1-3.4
- DIN 57414
- BS 3938
- EN 50081
- EN 50082
- IEC 1010
