Flexible Current Transformers Mitigate the Effects of Power Surges

The first step in mitigating power surges is to recognize that they are sometimes inevitable and thereby spell the need to install a flexible current transformer. Such a device is commonly used to measure surge currents. Aside from utility works, power surges can also be caused by lightning or internal circuitry (e.g. activating high-powered systems).

The next step is to identify the cause. If the facility is experiencing power surges on a clear day, lightning is unlikely to be the culprit. Experts believe most power surges stem from within a facility, such as a faulty wire or tripped circuit breaker somewhere. You can use the readings on the current transformer to determine fluctuations in a conductor’s current.

AC and DC Current Transformer Customizations Available in Aim Dynamics

If you are in need of high-quality current sensors to efficiently manage your business’s energy consumption, then you’ve come to the right place. Here at Aim Dynamics, we allow custom modifications for your utmost satisfaction. You can have your newly purchased current sensors customized with additional AC or DC current transformer accessories.

Simply start by clicking on the current sensor you want to purchase and selecting your amp rating. After that, you’ll be directed to the page where you can see the description and features of your product of choice. To see how you can get a discount, simply click the “view quantity discount” box beside the description-features-certifications row, if available. At the bottom section, you can find all the accessories—and links to their respective descriptions—available for your product. You can purchase more than one accessory if needed.

Split Core Current Transformer Dealer Now Offers Adc to Vac Transducer

The Adc to Vac Transducer can convert a 2-300 Adc input to a 333 mVac output. The device is suitable for battery chargers, DC motor drives and DC systems, mobile applications, and similar systems that will be plugged into a power meter expecting a 333 mVac such as an eGauge power meter. The device has a DIN rail mount option; if preferred, it can also be mounted on a panel.

This transducer has a 0.79” opening and weighs 0.5 lbs. It also has a supply voltage of 24 Vdc +/- 10% with a 1% accuracy. The operating temperature of the Adc to Vac Transducer is 0-50°C and contains an insulation voltage of 2500 Vdc. Users can look forward to a response time of 250 ms Max and 0-90% FS, and depending on your particular needs, the equipment can be customized based on the amp rating you require. Lastly, rest assured that the Adc to Vac Transducer is RoHS compliant.

Considerations when Purchasing Current Sensors

In days past, most current sensing designs followed only a few basic approaches. With the advancements in technology came a slew of measuring choices, making the selection process a bit more challenging. Should you choose Reflective light proximity sensors? Hall Effect sensors? How about one that uses Eddy current sensing?

Granted, for general applications, any type would likely yield satisfactory results. However, if you’re asking more from your devices, or if you have to work in extreme conditions, some options work better than others. That’s when you need to be concerned about the choices you make. Continue reading

Use of Current Transducers in Conveyor Systems

In a production line that employs conveyors, expensive mechanical damage is often the result of the conveyor jamming but with the drive motor continuing to run. By installing a current transducer to detect an overload, the drive motor can be prevented from sustaining damages that can grind your system—and ultimately your production—to a complete halt. Continue reading

Look, Ma, No Magnets

Whereas core-type current transformers have magnetic cores, flexible ones like Rogowski coils don’t have any. A Rogowski coil’s shell only houses a helical coil wire whose ends are located at the attachable terminals. If a Rogowski coil had a magnet inside, it would lose its flexibility due to the solid slab of magnetic material.

Instead, it relies on the electromagnetic field the conductor itself generates, which simply refers to the metal conduit. Flexible transformers rely on Ampere’s law to pick up the electromagnetic field looping around the wire. According to the law, current movement along this imaginary loop is the same as current movement along the conduit. Continue reading

“Current” Affairs

Current transformers are rated at both primary and secondary windings. In a standard setup, the primary winding consists of the conductor passing through the transformer, while the secondary winding has the coil around the core hooked to a metering device like an ammeter. Consequently, a transformer with a 100/5 spec means the primary current is at 100 A, while the secondary current is at 5 A.

The use of the term “windings” is universal for both current transformers and transformers in general. However, current transformers are more concerned with measurement than stepping voltages up or down (although they have this capability, to some extent). The primary current is current from a power source, while the secondary current delivers the power to the load (i.e. ammeter). Continue reading