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TH0400 Precision Coaxial Shunt

TH0400 is a series of 14 precision coaxial shunt devices of different range. It can convert the nominal input current from 1 mA to 100 A into a small voltage of 1 V to realize wideband current measurement. It is suitable for calibrating wideband current sources, transformers, sensors, etc.

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Model:
TH0400
Brand:
TUNKIA

TH0400 Precision Coaxial Current Shunt

1. Summary

2. Features

• Operating frequency: DC ~ 100 kHz

• AC/DC difference: ≤ 30 ppm@53 Hz

• Optimum phase displacement: 5 μrad

• Nominal output voltage: 1 V (other voltage values can be customized)

• Annual variation: typical value is 5 ppm, maximum value is 18 ppm

• Can withstand the instantaneous current impact

• 1 mA, 10 mA specifications can be equipped with buffer.

3. Applications

☆ Build Wide Frequency Current Measurement System

TH0400 Build Wide Frequency Current Measurement System

Set up wideband current measurement system with wideband current source and wideband standard voltmeter (such as TH2000 vector voltage analyzer), measure wideband current signal, and calibrate wideband current source and wideband ammeter, etc.

☆ Build Wide Frequency Power/Energy Precision Measurement System

TH0400 Build Wide Frequency Power/Energy Precision Measurement System

Set up wideband power/energy precision measurement system with wideband I/V conversion standard (such as TH0150 wideband voltage divider) and TH0200 vector voltage analyzer, measure wideband power/energy signal, calibrate wideband power source, wideband power meter, power analyzer and other equipment.

☆ Build Wide Frequency Transformer/Sensor Calibration System

TH0400 Build Wide Frequency Transformer/Sensor Calibration System

Set up a wideband transformer/sensor measurement system with a wideband constant-current source and a wideband sensor tester (such as TH2000 vector voltage analyzer) to calibrate the tested transformer or sensor with nominal current ≤ 100 A.

☆ Build Wide Frequency Transformer/Sensor Calibration System

For the calibration of transformer/sensor whose nominal current is greater than 100 A, TH0400 is used as the secondary signal I/V converter of the standard and equipment under inspection, and a wideband constant current source and wideband sensor tester (such as TH2000 vector voltage analyzer) are used to build a wideband transformer/sensor measurement system.

4. Specifications

4.1 Resistance Specification

Specification	Nominal resistance ( Ω )	Initial deviation [1] (±μΩ/Ω ) @ (23±1)°C	Annual Stability ( ±μΩ/Ω )	Temperature coefficient ( ppm/K )	Power factor [2] ( ±ppm/Rated power )
TH0400-1mA	1000	50	18	2.5	1
TH0400-10mA	100	50	18	2.5	1
TH0400-20mA	50	50	18	2.5	1
TH0400-50mA	20	50	18	2.5	1
TH0400-100mA	10	50	18	2.5	2
TH0400-200mA	5	50	18	2.5	4
TH0400-500mA	2	50	18	2.5	12
TH0400-1A	1	50	18	4.0	25
TH0400-2A	500 m	50	18	4.0	25
TH0400-5A	200 m	50	18	4.0	30
TH0400-10A	100 m	50	18	4.0	60
TH0400-20A	50 m	50	18	4.0	75
TH0400-50A	20 m	50	18	4.5	100
TH0400-100A	10 m	50	18	4.5	100
Note [1]: The initial deviation is the maximum offset of the resistance under DC condition, usually the manufacturer's guaranteed value; Higher precision can be customized according to user requirements, such as 20 μΩ/Ω. Note [2]: When the coaxial shunt is used to measure DCI, the resistance's own heat will lead to the change of resistance value under different input currents, thus introducing the error. The calculation formula is as follows: γ= power coefficient × [1-(current measurement/nominal current value)^2]

4.2 Current Measurement

Specification	Nominal input current ( A )	Nominal Output current ( V )	AC/DC difference[3] ( ±ppm )			Maximum operating current( A )	Instantaneous current ( A, <5 s )
Specification	Nominal input current ( A )	Nominal Output current ( V )	50 Hz	1 kHz	100 kHz	Maximum operating current( A )	Instantaneous current ( A, <5 s )
TH0400-1mA	1 m	1	25	50	150	2m	3m
TH0400-10mA	10 m	1	20	25	50	20m	150m
TH0400-20mA	20 m	1	20	25	50	40m	250m
TH0400-50mA	50 m	1	20	25	50	100m	500m
TH0400-100mA	100 m	1	20	25	25	200m	1.5
TH0400-200mA	200 m	1	20	25	25	500m	2
TH0400-500mA	500 m	1	20	25	25	1	3
TH0400-1A	1	1	20	25	30	1.5	4
TH0400-2A	2	1	20	30	50	2.5	6
TH0400-5A	5	1	20	30	80	5.5	20
TH0400-10A	10	1	20	30	100	11	30
TH0400-20A	20	1	20	30	100	22	50
TH0400-50A	50	1	30	50	150	55	100
TH0400-100A	100	1	30	50	500	110	200
Note [3]: The measured value of AC current should be calculated according to the following formula, and the unit of the difference between AC and DC is ppm: Ac current measurement value =(voltage measurement value/calibration resistance value)*(1+ AC-DC difference /(1 000 000))

4.3 Phase Displacement

Specification	Phase Displacement ( ±μrad )
Specification	53 Hz	400 Hz	1 kHz	10 kHz	50 kHz	100 kHz
TH0400-1mA	10	10	15	100	500	1000
TH0400-10mA	5	5	10	100	400	800
TH0400-20mA	5	5	10	100	400	800
TH0400-50mA	5	5	10	100	400	800
TH0400-100mA	5	5	10	60	300	500
TH0400-200mA	5	5	10	60	300	500
TH0400-500mA	5	5	10	60	300	500
TH0400-1A	5	5	10	60	300	500
TH0400-2A	10	10	15	110	500	1000
TH0400-5A	10	15	25	200	1000	2000
TH0400-10A	10	20	40	300	1500	3000
TH0400-20A	10	25	50	400	2000	4000
TH0400-50A	10	30	65	500	2500	5000
TH0400-100A	20	40	80	600	3000	6000

5. General Specifications

Power supply	——
Temperature performance	Operating temperature: 13 °C ~ 33°C; Calibration temperature: 18°C~28°C; Storage temperature: 5°C to 45 °C Note: When stored in a harsh temperature environment, the resistance value may change temporarily and be restored to the original resistance value within the following 30 days.
Humidity performance	Operating humidity: < 50% R·H Storage humidity :(15%~80%) R·H, no condensation
Connection mode	Input connection: 1 mA~20 A specifications using Type-N female plug; Type-LC female plug for 50 A and 100 A specification; Output connection: All specifications use Type-N female plugs.

Specification	*Size (mm) (W D * H) (excluding terminals)**	Weight ( kg )	Size chart
TH0400-1mA TH0400-10mA TH0400-20mA TH0400-50mA	90 25 25	0.1
TH0400-100mA TH0400-200mA TH0400-500mA TH0400-1A TH0400-2A TH0400-5A	11070 70	0.2
TH0400-10A TH0400-20A	180130130	1
TH0400-50A TH0400-100A	260200200	2.5

6. Ordering Information

	Specification	Nominal current
	TH0400-1mA	1 mA
	TH0400-10mA	10 mA
	TH0400-20mA	20 mA
	TH0400-50mA	50 mA
	TH0400-100mA	100 mA
	TH0400-200mA	200 mA
	TH0400-500mA	500 mA
	TH0400-1A	1 A
	TH0400-2A	2 A
	TH0400-5A	5 A
	TH0400-10A	10 A
	TH0400-20A	20 A
	TH0400-50A	50 A
	TH0400-100A	100 A