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D
Class B 75MV National Standard AC/DC Shunt
The shunt is mainly formed by welding purple, manganese copper sheets and copper joints. There are two sets of terminal buttons on the joints at both ends of the shunt: one set on the outside is a potential terminal button for connection with the power cord, and a set on the inner side is a potential terminal button For connection with measuring instruments
The accuracy of FL-2 series shunt is: 0.5 grade, specification range: 50-300A, secondary voltage: 75mV.
Note: This product is a national standard shunt, not a grade B shunt. This product complies with JB/T 9288-1999, GB/T 7676-1998, and IEC 61010-1: 1999 standards; beware of some businesses using grade B shunts The national standard shunt is sold.
Purpose:
fixed value shunt is used to expand the main technical parameters of the measuring current range of the instrument
fixed value shunt is used to expand the main technical parameters of the measuring current range of the instrument
1. Accuracy grade: 0.5
2. Environmental conditions: -40~+60℃, relative temperature ≤95% (35℃)
3. Mechanical resistance performance: It can withstand transportation shocks with an acceleration of seconds and an impact frequency of 80 to 120 times per minute for 6 hours.
4. Overload performance: 120% of rated current, 2 hours.
5. Voltage drop: 75mV.
6. Heating under load: After the temperature rise becomes stable, the rated current below 50A does not exceed 80°C; the rated current above 50A does not exceed 120°C
working principle
1.Real shunt resistor, very small resistance When DC is passed, generate voltage for display DC current.
2.DC current real voltmeter full degree 75 mV. DC ammeter shunt use together.
For example
shunt resistance of 100A ammeter 0.00075 ohms, that is 100A * 0.00075 ohms = 75 mV;
shunt resistance 50A ammeter 0.0015 ohm, 50A * 0.0015 ohm = 75mV.
product use
Shunt is widely used to expand the measuring current range of the instrument, and can be used for current limiting and current sharing sampling, power supply detection circuit, automatic electronic control system of the whole machine.
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