75mV Low Resistance Precision Current Ammeter shunt resistor
10A to 500A
When discussing a **75mV low resistance precision current ammeter shunt resistor**, we can break down the features, specifications, and applications as follows:
high precision meter shunt resistor
Four ranges are available that develop either 50mV, 60mV,75mV,or 100mV at full load current. The millivolt signal can then be safely taken to a suitably scaled moving coil indicating instrument or another monitoring device.
The shunts are brass-ended manganin and all shunts up to the 200 Amp rating are mounted on an insulated base ensuring electrical insulation. All non-insulated shunts may need protection against accidental contact. The shunts should be mounted vertically with the blade faces vertically to achieve maximum heat dissipation.
| Product Features | Output |
| Brass ended manganin shunts 10 Amp to 5000 Amp 50mV or 60mV output 75mV or 100mV output Accuracy class0.5 Insulated base on shunts up to 200A |
0-50mV 0-60mV 0-75mV 0-100m |
Features
1. Low Resistance Value:
- Typically, shunt resistors used for current measurement have very low resistance values (in the milliohm range) to minimize the voltage drop and power loss in the circuit.
2. Precision:
- High precision resistors have tight tolerances (often ±0.1% or better) to ensure accurate current measurements.
3. Power Rating:
- The shunt resistor should have an adequate power rating to handle the heat generated by the current flowing through it without damage.
4. Temperature Coefficient:
- A low temperature coefficient (often ≤ 50 ppm/°C) ensures that the resistance value remains stable over a range of temperatures.
5. Material:
- Typically made from materials like manganin or copper-nickel alloys, which offer stability and low temperature coefficients.
6. Size and Form Factor:
- Compact design to fit into various applications, often in a surface mount or through-hole package.
7. Non-Inductive Design:
- To prevent inductive effects that could affect measurement accuracy, especially at high frequencies.
Specifications
1. Resistance Value:
- Common values might range from a few milliohms (e.g., 0.001Ω to 0.1Ω).
2. Voltage Drop:
- Designed to produce a 75mV drop at a specified current (e.g., 10A current would correspond to 0.0075Ω).
3. Power Rating:
- Rated for specific wattage (e.g., 1W, 5W, or higher) depending on the expected current levels.
4. Tolerance:
- ±0.1%, ±0.5%, or ±1% depending on the precision required.
5. Temperature Range:
- Typically rated for operation in a wide temperature range (-40°C to +125°C).
6. Mounting Type:
- Can be surface mount (SMD) or through-hole.
Applications
1. Power Measurement:
- Used in power supplies, battery management systems, and electric vehicle charging stations to measure current accurately.
2. Test Equipment:
- Integrated into laboratory instruments for testing and measurement applications.
3. Industrial Automation:
- Employed in motor control systems and industrial machinery for current monitoring.
4. Renewable Energy Systems:
- Used in solar inverters and wind turbine systems for monitoring current flow.
5. Consumer Electronics:
- Incorporated into devices for accurate battery monitoring and management.
6. Telecommunications:
- Used in power distribution units (PDUs) for data centers to monitor power consumption.
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