TU_ Measuring transformers

Current transformers TU__ for measuring instrumentation, are designed for through-hole primary, either for cable or for PCB. Their enclosure is made of plastic.

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Technical specifications

Certificate

Technical details

Dimensions
Technical characteristics
Technical data
Relations

Model / Bar / Cable
TU20 / 20×5 / Ø16
TU30 / 30×10 / Ø22
TU40 / 40×10 / Ø30

Passing primary
For cable or busbar
Plastic enclosure
Narrow profile

Standards

IEC 60185
UNE EN 618691 (IEC 618691)
UNE EN 618692 (IEC 618692)
VDE 0414
IEC60801-3.4
DIN 57414
BS 3938
EN 50081
EN 50082
IEC61010
UL94-V0

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