Прибор за пећи за индукционо топљење: shunt

Shunt: used to display DC current, connected with ammeter to display

Purpose: Fixed fixed value shunt is an external shunt suitable for measuring DC current below 10kA and directly acting on the analog display instrument to expand the DC current measurement range, or it can be regarded as a current in a sequential circuit The sampling voltage of the standard resistor used for sampling can be regarded as the analog signal of the primary current used for measurement.

Главни технички параметри

1. Accuracy grade: 2～4000A; 0.5 grade: 5000～10000A; 1 grade.

2. Environmental conditions: -40～+60℃, relative temperature ≤95% (35℃).

3. Overload performance: 120% of rated current, 2 hours.

4. Voltage drop: 50mV60mV70mV100mV

5. 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.

Schematic diagram of shunt wiring

Мере предострожности

1. No artificial contact resistance is allowed at the connection between the cable (or copper bar) of the primary circuit of the shunt and the shunt. The sampling point of the secondary voltage cannot be sampled from a non-sampling point.

2. It is recommended that the actual current used (for a long time) not exceed 80% of the rated current.