shunt FL-2

Product Overview

Working Principle
As a precision resistive component, the FL-2 shunt operates on the Ohm’s Law principle for current measurement. When connected in series with the measured circuit and the panel meter, the shunt performs two critical functions:
1. Current Diversion: It carries the bulk of the high system current (typically 99% or more of the total current), while allowing only a small, precisely proportional fraction of the current to flow through the connected panel meter.

2. Voltage Drop Generation: The controlled, low resistance of the shunt produces a linear, repeatable voltage drop across its terminals when current passes through it. This voltage drop is directly proportional to the measured current and is within the input range of the panel meter, which is calibrated to display the corresponding full-scale current value.

For example, a standard FL-2 shunt rated for 100 A / 75 mV will generate a 75 mV voltage drop when 100 A of current flows through it. This 75 mV signal is compatible with panel meters calibrated to this voltage standard, enabling the meter to accurately indicate the 100 A system current without being exposed to the full current load.

Core Technical Characteristics
1. High  Precision & StabilityManufactured with special alloy materials (e.g., manganin or constantan) that feature extremely low temperature coefficients of resistance, the FL-2 shunt maintains consistent resistance values across a wide operating temperature range. This minimizes measurement drift and ensures long-term accuracy, even in harsh industrial environments.

2. Optimized for DC Current MeasurementThe FL-2 series is primarily designed for DC current applications (e.g., battery charging systems, DC motor drives, electroplating equipment, and power supply units). Its resistive design ensures linear performance with DC currents, avoiding the inductive or capacitive effects that can impact AC current measurement accuracy.

3. Wide Current Rating RangeAvailable in a comprehensive range of rated current values (typically from tens of amps to thousands of amps), the FL-2 shunt can be matched to the specific high-current measurement requirements of the system, with corresponding voltage drop outputs standardized to common panel meter input ranges (e.g., 75 mV, 100 mV).

4. Robust Construction for Industrial UseBuilt with a rugged, compact structure, the FL-2 shunt features heavy-duty terminal connections to handle high current loads without overheating or loose connections. Its design is optimized for easy installation in control panels, switchgear, and test equipment.