Introduction to Instrumentation Accessories
At Electrónica Embajadores, we offer a wide selection of electrical instrumentation accessories, including shunts and current transformers (CTs). These components are vital for precise and reliable electrical measurement across a variety of industrial, commercial, and laboratory environments.
With extensive experience in the sector, we provide products that comply with the highest standards of quality and performance, designed to integrate seamlessly with measuring instruments and electrical panels, ensuring accuracy and safety in electrical supervision and control.
What are Shunts and Current Transformers?
Shunts
Shunts are very low-value resistors designed to measure high currents by converting electrical current into a proportional voltage drop that can be measured accurately with appropriate instruments. Their primary function is to enable indirect measurement of currents that are too high for direct measurement.
They are commonly used in electrical systems where accurate measurement of direct or alternating current is needed, offering long-term reliability and stability.
Current Transformers (CTs)
Current transformers are electromagnetic devices designed to reduce high currents to manageable levels for measuring and protection instruments. They operate via electromagnetic induction, producing a current proportional to the measured current on their secondary winding, which can be safely analysed by connected equipment.
CTs are primarily used in alternating current (AC) electrical systems to protect equipment and facilitate safe, precise measurement, avoiding direct contact with high voltages and currents.
Electrónica Embajadores Catalogue
The Electrónica Embajadores catalogue offers a comprehensive selection of shunts and current transformers with various technical characteristics suited to multiple applications:
- Precision Shunts: Low-value resistors with high thermal stability, ideal for DC measurement and electronic systems.
- Standard Current Transformers: Designed for low, medium, and high voltage electrical systems, with a wide range of primary currents to suit different installations.
- Split-Core Current Transformers: Allow easy installation without interrupting the electrical circuit.
- Current Transformers for Protection and Measurement: Comply with international standards for protection, measurement, and control applications.
- Complementary Accessories: Terminals, connection cables, and protective housings to ensure proper installation and optimal operation.
All products come with quality certifications, detailed technical documentation, and specialised support.
Main Applications
Electrónica Embajadores’ shunts and current transformers are used in a wide range of applications, including:
- Current measurement and monitoring in industrial electrical networks: Consumption control, energy analysis, and predictive maintenance.
- Electrical equipment protection: Overcurrent and short circuit protection systems in industrial and commercial installations.
- Industrial control and automation: Integration with SCADA and PLC systems for process supervision and management.
- Testing and calibration laboratories: Precise evaluation of measuring devices and electrical components.
- Power generation and distribution: Measurement in power plants, substations, and distribution lines.
Benefits of Our Accessories
- High precision and reliability: Ensure accurate measurements thanks to high-quality materials and advanced technology.
- Wide current range: Available for currents from low to very high intensities.
- Easy installation and maintenance: Compact models with split-core options for installation without circuit interruption.
- Compatibility: Suitable for many panel instruments and control systems.
- Safety: Compliant with international standards ensuring protection and reduction of electrical hazards.
- Professional technical support: Advice on choosing the right product and optimising its performance.
Technical Specifications
Electrónica Embajadores’ accessories offer the following general specifications, tailored to each model:
- Nominal resistance of shunts: typically from a few micro-ohms to milliohms with tolerances as low as ±0.1%.
- Primary currents of current transformers: ranging from a few tens of amperes up to several thousand amperes.
- Adjustable transformation ratios according to system requirements.
- Nominal frequency: 50/60 Hz, compatible with standard electrical networks.
- Certified electrical insulation for specific voltages depending on type and application.
- Materials resistant to harsh environmental conditions: humidity, dust, vibration, and extreme temperatures.
- Variable dimensions and weight depending on models to facilitate integration into electrical panels.
Installation and Maintenance
To ensure optimal performance and long service life of shunts and current transformers, it is recommended to:
- Strictly follow the technical instructions provided by Electrónica Embajadores.
- Have these accessories installed only by qualified personnel, adhering to electrical safety standards.
- Use appropriate tools and accessories to prevent damage to the devices.
- Perform regular inspections and preventive maintenance.
- Carry out regular calibration to maintain measurement accuracy.
- Store accessories in a dry and clean environment when not in use.
Frequently Asked Questions
What is the difference between a shunt and a current transformer?
A shunt measures current via the voltage drop across a low-value resistor, primarily used for DC or low current measurements. A current transformer converts the primary current into a proportional secondary current via induction, mainly used for AC and high current measurements.
Can current transformers be used in DC systems?
No, current transformers are designed for alternating current. For DC measurement, shunts or specific sensors are used.
How do I choose the right shunt for my application?
You need to consider the maximum current to be measured, resistance range, required accuracy, and environmental conditions. Our support team can help select the ideal product.
Are the accessories certified?
Yes, all our products comply with international standards and have certifications to guarantee safety and reliability.
What type of maintenance is required?
Regular inspection of connections, cleaning of surfaces, and calibrations according to usage and technical recommendations.
Conclusion
Accessories such as shunts and current transformers from Electrónica Embajadores are essential components to ensure accuracy, safety, and efficiency in electrical systems and industrial instrumentation. Thanks to our expertise and commitment to quality, we offer tailored solutions to each need, guaranteeing performance and durability.
For more information or personalised advice, do not hesitate to contact our technical team or visit our website to consult our complete catalogue and discover the latest products in electrical instrumentation.
