Shunts, AFL-T Series
The fixed-value shunt is mainly used for the measurement of large current. Its working principle is similar to the small-resistance four-terminal measuring resistor. The method of measuring the voltage drop reflects the magnitude of the measured current. The AFL-T series fixed value shunt is mainly made of manganese copper material and copper terminal welded with silver alloy. The copper terminals on both sides have a set of current measuring end and voltage sampling end. The maximum rated current is 10kA. When the measured current is less than or equal to 50A, it is fixed by plastic base. When it is more than 50A, it is fixed by copper terminal directly. When the shunt is used with the pointer ammeter, since the ammeter is actually a millivoltmeter with a resistance of about several ohms, it must be connected with a pair of fixed-value wires supplied with the ammeter. When the shunt is used with the digital voltmeter, it can be connected by any wire.
Telecommunications equipment, electric vehicles, aerospace, charging stations, electroplating power supplies, instrumentation, DC power transmission and other systems.
- GB/T 7676.1～9-1998 "Direct acting indicating analogue electrical measuring instruments and their accessories"
- GB/T5729-94 "Fixed resistors for electronic equipment"
- GJB/T360A-96 "Test Methods for Electronic and Electronic Components"
- GB2423 "Regulations for Environmental Testing of Electrical and Electronic Products"
- IEC 51-9 "Direct acting indicating analogue electrical measuring instruments and their accessories
-Part 9: Recommended test methods" - JB/T9288-1999 "External shunt"
- IEC610101-2001 "Safety requirements for electrical equipment for measurement, control and laboratory"
- SJ/T11363-2006 "Limited Requirements for Hazardous Substances in Electronic Information Products"
This fixed-valued shunt is widely used to expand the measuring range of meter's current.
- Production range: 1A~50A/ 10mV~800mV; 51A~2500A/ 10mV~300mV; 2501A~12000A /10mV~100mV, conventional 75mV
- Environmental conditions: -25 ~ 40 ° C, relative humidity: ≤ 80%.
- Temperature rise: When the temperature is stable for two hours at rated current, if the rated current of the equipment is below 100A, the temperature rise should not exceed 80K. If the rated current of the equipment is above 100A, the temperature rise should not exceed 120K.
- Overload performance: 120% rated current, 2 hours.
- Thermal potential effect: no more than 50% of the grade index.
- Accuracy : 0.5 class
