High Quality Shunt Resistor For Accurate Current Measurement
Shunt resistor is a type of current sensor and commonly used for the measurement of electric current. Also known as ammeter shunt or current shunt, it measures the current by monitoring the change of voltage along the resistor which is serially connected in the main circuit.
The current shunts are usually made out of manganin resistors. Manganin shunt is particularly suitable for accurate current measurement - due to its highly stable propertities and extremely low temperature coefficient of resistance.
The ISTEK series of shunt resistors are primarily designed and made for energy meters to measure the current with required accuracy level. As a competent supplier of latching relays to a number of major smart meter manufacturers, we are often requested to provide ammeter shunts to our customers.
When required by a client, we can weld the current shunt directly on to the terminal outlet of a relay. Alternatively, we can weld the stranded copper wires to the shunt according to customer's technical requirements.
Series of Manganin Shunts Available from ISTEK
ISTEK has a wide range of cost effective current shunts for its international customers to choose. The resistance of these manganin shunt products spans from 100μΩ to 2000μΩ. We can work with customers to meet any special requirement if the resistance needs to be outside this scope.
The other technical specifications of our manganin shunt products include:
- Ambient temperature: -20℃ ~ +70℃
- Relative humidity: up to 95% at 40℃
- Atmospheric pressure: 86Kpa - 106 Kpa
- Rated currents: 6A, 10A, 30A, 40A, 60A, 80A and 100A
- Insulation resistance: normal condition ≥100（MΩ）, post life test under high humidity ≥1（MΩ）
- Dielectric Strength: 500Vac (50/60Hz 1min)
- Temperature rise: no more than 60℃ under rated load (note: for reference only as it varies at different operational conditions)
- Properties of the electron beam welding band: resistivity 0.42 - 0.43 Ω mm2/m; thickness 0.5mm - 2.0mm
- Accuracy coefficient: no more than 0.2%/100A
- Resistance temperature coefficient: (0 ~ +40)*10-6/℃
The most popular shunt resistors from ISTEK for energy meters:
ISTEK-SR30:
- Rated meter current: 30A
- Shunt Resistance options: 350uΩ / 400uΩ / 500uΩ / 600uΩ
- Distance between mounting holes: 21mm
- Mounting hole diameter: 5.2mm
- Maximum dimensions (L x W mm): 35 x 22
ISTEK-SR40:
- Rated meter current: 40A
- Shunt Resistance options: 250uΩ / 300uΩ / 350uΩ
- Distance between mounting holes: 21mm / 45mm
- Mounting hole diameter: 4.5mm / 5.2mm
- Maximum dimensions (L x W mm): 35 x 22 / 63 x 30
ISTEK-SR60:
- Rated meter current: 60A
- Shunt Resistance options: 200uΩ / 250uΩ / 300uΩ / 350uΩ
- Distance between mounting holes: 21mm / 45mm
- Mounting hole diameter: 4.5mm / 5.2mm
- Maximum dimensions (L x W mm): 35 x 22 / 63 x 30
ISTEK-SR80:
- Rated meter current: 80A
- Shunt Resistance options: 120uΩ / 150uΩ / 180uΩ / 200uΩ
- Distance between mounting holes: 21mm
- Mounting hole diameter: 5.2mm / 6.2mm
- Maximum dimensions (L x W mm): 35 x 33
ISTEK-SR100:
- Rated meter current: 100A
- Shunt Resistance options: 120uΩ / 150uΩ
- Distance between mounting holes: 21mm
- Mounting hole diameter: 6.2mm
- Maximum dimensions (L x W mm): 35 x 33
If you want to know more technical details of our existing manganin shunt products, please refer to the specification and technical datasheet: ISTEK-Shunt-Resistor-Specifications
Alternatively, if you need to know the price of any specific shunt resistor or have other customised requirements - please let us know via the below form: