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TDB series current transformers are designed to work with [Type B Earth Leakage Relays].
TDB current transformers are designed to measure AC and DC currents in the DC-10 kHz band with a resolution of 1 mA. They feature an integrated zeroing (demagnetization) function, which is activated upon power-up or remotely via the TEST RESET input. This function eliminates current errors (DC offset) caused by the Earth's magnetic field, temperature drift, vibrations, mechanical shocks, etc. The RMS current measurement error (AC+DC) is proportional to the line current and depends on the geometric arrangement of the conductor through the transformer opening and the distance between adjacent transformers.
Parameter | Value |
---|---|
Self estinguishing (Thermoplastic material) | UL 94-V0 |
Residual current measure IΔ | Typ B – TRMS |
Measure full range | TDB…3CM: IΔ1mA÷1,5Aac±2,1Adc TDB…003: IΔ 10mA÷15Aac±21Adc TDB...050: IΔ100mA÷50Aac±70Adc |
Sensor degauss | 500ms voltage pulse |
DC offset after degauss | TDB…3CM < ±1mAdc TDB...003: < ±5mAdc TDB...050: < ±50mAdc |
Line current error with centred cables | <30μA/A (<3mArms@100A) |
Sensor connections | 4 wires [+Vcc,GND, Vref, Vin] |
Sensor cables | 4 wires 1mm2 |
Bandwidth | DC – 10kHz (-3dB) |
Shield | High EMI environments |
Maximum cable length | 10m |
Maximum operating voltage | 720 Vac |
Reference voltage | 0,72 kV |
Test voltage | 3kV, 50Hz, 1min. |
Protection degree | IP20 |
Manufactured according to | IEC61010-1, IEC 60947-1 |
Operating temperature | 0…+50˚C |
Storage temperature | -20...+70°C |
Core dimensions | Current range | ||
---|---|---|---|
IΔn 30mA÷1,5Aac | IΔn 300mA÷15Aac | IΔn 1A÷50Aac | |
Ø 28 mm | TDB0283CM | TDB028003 | |
Ø 28 mm | TDB0603CM | TDB060003 | |
Ø 28 mm | TDB0903CM | TDB090003 | |
Ø 28 mm | TDB1103CM | TDB110003 | |
Ø 28 mm | TDB160003 | ||
Ø 28 mm | TDB210003 | ||
325 x 125 mm | TDB321050* | ||
470 x 160 mm | TDB471050* |
*available only for the appropriate relays X..DB3050...
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TDB series current transformers are designed to work with [Type B Earth Leakage Relays].
TDB current transformers are designed to measure AC and DC currents in the DC-10 kHz band with a resolution of 1 mA. They feature an integrated zeroing (demagnetization) function, which is activated upon power-up or remotely via the TEST RESET input. This function eliminates current errors (DC offset) caused by the Earth's magnetic field, temperature drift, vibrations, mechanical shocks, etc. The RMS current measurement error (AC+DC) is proportional to the line current and depends on the geometric arrangement of the conductor through the transformer opening and the distance between adjacent transformers.
Parameter | Value |
---|---|
Self estinguishing (Thermoplastic material) | UL 94-V0 |
Residual current measure IΔ | Typ B – TRMS |
Measure full range | TDB…3CM: IΔ1mA÷1,5Aac±2,1Adc TDB…003: IΔ 10mA÷15Aac±21Adc TDB...050: IΔ100mA÷50Aac±70Adc |
Sensor degauss | 500ms voltage pulse |
DC offset after degauss | TDB…3CM < ±1mAdc TDB...003: < ±5mAdc TDB...050: < ±50mAdc |
Line current error with centred cables | <30μA/A (<3mArms@100A) |
Sensor connections | 4 wires [+Vcc,GND, Vref, Vin] |
Sensor cables | 4 wires 1mm2 |
Bandwidth | DC – 10kHz (-3dB) |
Shield | High EMI environments |
Maximum cable length | 10m |
Maximum operating voltage | 720 Vac |
Reference voltage | 0,72 kV |
Test voltage | 3kV, 50Hz, 1min. |
Protection degree | IP20 |
Manufactured according to | IEC61010-1, IEC 60947-1 |
Operating temperature | 0…+50˚C |
Storage temperature | -20...+70°C |
Core dimensions | Current range | ||
---|---|---|---|
IΔn 30mA÷1,5Aac | IΔn 300mA÷15Aac | IΔn 1A÷50Aac | |
Ø 28 mm | TDB0283CM | TDB028003 | |
Ø 28 mm | TDB0603CM | TDB060003 | |
Ø 28 mm | TDB0903CM | TDB090003 | |
Ø 28 mm | TDB1103CM | TDB110003 | |
Ø 28 mm | TDB160003 | ||
Ø 28 mm | TDB210003 | ||
325 x 125 mm | TDB321050* | ||
470 x 160 mm | TDB471050* |
*available only for the appropriate relays X..DB3050...
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