Điện trở shunt

Description
Additional information

Introduction

TH0400, a series of 14 various ranges precision coaxial shunts.
TH0400 can work in the DC ~ 100 kHz frequency range, converting 1 mA ~ 100 A nominal current into 1 V small current.
DC ratio accuracy: 20 ppm；AC/DC difference: 20 ppm; phase displacement: 5.
It is suitable for calibration of AC/DC high current source, current sensor, DC shunt, and other occasions where current needs to be measured precisely.

Features

The nominal voltage is 1 V, can measure current by directly matching high-precision voltmeters or other measurement instruments.
For 1 mA, 10 mA and other high resistance current shunts, combine with the model TH0600 to avoid errors caused by wire connection or input impedance drops of digital meters at high frequency.
Compared to 0.5 V, 0.8 V and other voltage value, the 1V nominal voltage has a higher noise ratio, easier current conversion, faster error calculation, and accords with the 1-2-5 sequence principle of modern measurement.
Precision components and production processes ensure the resistance value stable, the typical resistance change value is ±5 μΩ/Ω in 1 year, and the maximum resistance change value is ±16 μΩ/Ω in 1 year.
Good heat dissipation, lower temperature coefficient and self-heating power factor ensure a good stability.
Small phase displacement between the input current and the sampled voltage, the phase displacement is less than 0.0015 ° even at 1 kHz. This feature is critical for the measurement of non-sinusoidal and wideband signals, applied to analyze power quality and calibrate digital power meters.
The capacity of loading current and withstanding current impulse is limited, but you can use a set of shunts to obtain a wide range of current measurement.

Specification

Resistance

I_nom	U_nom (V)	R_nom (Ω)	Initial Deviation^① (μΩ/Ω)	Stability (μΩ/Ω)	Temperature Coefficient (ppm/K)	Power Coefficien^② (μΩ/Ω)	Imax Load	Instantaneous Current (<5 s)
1 mA	1	1 k	50	18	2.5	1	2 mA	3 mA
10 mA	1	100	50	18	2.5	1	20 mA	50 mA
20 mA	1	50	50	18	2.5	1	40 mA	100 mA
50 mA	1	20	50	18	2.5	1	100 mA	200 mA
100 mA	1	10	50	18	2.5	2	200 mA	500 mA
200 mA	1	5	50	18	2.5	4	500 mA	1 A
500 mA	1	2	50	18	2.5	12	1 A	2 A
1 A	1	1	50	18	4.0	25	1.5 A	4 A
2 A	1	0.5	50	18	4.0	25	2.5 A	5 A
5 A	1	0.2	50	18	4.0	30	5.5 A	10 A
10 A	1	0.1	50	18	4.0	60	11 A	25 A
20 A	1	0.05	50	18	4.0	75	22 A	40 A
50 A	1	0.02	50	18	4.5	100	55 A	90 A
100 A	1	0.01	50	18	4.5	100	110 A	180 A

Remarks:

①: In the calibration temperature environment, the deviation of the measured resistance value from the nominal resistance value after the rated DC current is applied for ten minutes. Higher precision can be customized according to user requirements, such as: 20μΩ/Ω。

②: The initial deviation of the DC resistance value has included the power coefficient influence error under the nominal current. When measuring other non-nominal currents, additional measurement accuracy should be introduced. The calculation formula is:

Current

Inom	Max. AC/DC Diff. (ppm*FS^③)			Max. Phase Displacement (μrad)
Inom	50 Hz	1 kHz	100 kHz	53 Hz	400 Hz	1 kHz	10 kHz	50 kHz	100 kHz
1 mA	25	50	150	10	10	15	120	500	1000
10 mA	20	25	50	5	5	10	100	400	800
20 mA	20	25	50	5	5	10	100	400	800
50 mA	20	25	50	5	5	10	100	400	800
100 mA	20	25	25	5	5	10	60	300	500
200 mA	20	25	25	5	5	10	60	300	500
500 mA	20	25	25	5	5	10	60	300	500
1 A	20	25	30	5	5	10	60	300	500
2 A	20	30	50	10	10	15	110	500	1000
5 A	20	30	80	10	15	25	200	1000	2000
10 A	25	30	100	10	20	40	300	1500	3000
20 A	25	30	100	10	25	50	400	2000	4000
50 A	30	50	150	10	30	65	500	2500	5000
100 A	30	50	200	20	40	80	600	3000	6000
Remarks: ③: FS is full-scale value

Dimension and Weight

Model	Name	Dimension (W × H × D, mm)	Weight (kg)
TH0400 – 1 mA	1 mA shunts	90 × 25 × 25	0.1
TH0400 – 10 mA	10 mA shunts	90 × 25 × 25	0.1
TH0400 – 20 mA	20 mA shunts	90 × 25 × 25	0.1
TH0400 – 50 mA	50 mA shunts	90 × 25 × 25	0.1
TH0400 – 100 mA	100 mA shunts	90 × 25 × 25	0.1
TH0400 – 200 mA	200 mA shunts	110 × 70 × 70	0.2
TH0400 – 500 mA	500 mA shunts	110 × 70 × 70	0.2
TH0400 – 1 A	1 A shunts	110 × 70 × 70	0.2
TH0400 – 2 A	2 A shunts	110 × 70 × 70	0.2
TH0400 – 5 A	5 A shunts	110 × 70 × 70	0.2
TH0400 – 10 A	10 A shunts	180 × 130 × 130	1
TH0400 – 20 A	20 A shunts	180 × 130 × 130	1
TH0400 – 50 A	50 A shunts	260 × 200 × 200	2.5
TH0400 – 100 A	100 A shunts	260 × 200 × 200	2.5
Remarks: Partial or full purchases are available, particular requirements can be customized by resistance and sampled voltage (e.g. 0.5 V and 0.8V).

Thương hiệu	TUNKIA
Xuất xứ	Trung Quốc

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