Aim Dynamics: January 2015

Friday, January 30, 2015

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.

Wednesday, January 28, 2015

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.

Monday, January 26, 2015

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.

Friday, January 23, 2015

The Process Behind Inductive Proximity Sensors

Position can be determined via one of two ways—either by determining ‘distance’ (the length of separation between two points) or by ‘rotation’ (angular movement). Sensors that are positional in nature can detect the movement of an object using linear sensors that employ the distance method or through rotational sensors that compute for rotation.

One type of positional sensor is the “Linear Variable Differential Transformer (LDVT), an inductive-type sensor that functions similar to the AC transformer when it comes to measuring movement. A common type of inductive positional sensor is the Eddy current sensor, which is mainly used to detect objects in close proximity. Due to this characteristic, Eddy sensors earned the more popular moniker ‘proximity sensors’.

Friday, January 16, 2015

The Two Main Types of Current Transformers

Current transformers (CT) are generally used to measure and control current in an electrical system. High current levels cannot be fed to a system’s relays and meters, and it’s a CT’s job to quantify our manipulate current to a level that these devices can handle. Based on function, CTs can be classified as follows:

Measuring CTs

This type of CT is typically used in combination with measuring devices for the accurate measurement of energy, current, and power.

Friday, January 9, 2015

Meet the Cores

At the heart of a current transformer is a slab of magnetic material known as a magnetic core. to put it simply, the measurement mechanism wouldn't work without a magnetic core.

Enveloped by two upper layers of insulation and secondary windings, the magnetic core emits the magnetic field necessary to generate electromagnetic energy. Through the Hall Effect, the current transformer enables a hooked measuring device like an ammeter or voltmeter to get accurate readings. Solid and split-core transformers are known to employ magnetic cores.

Friday, January 2, 2015

Thinking Accuracy with Current Transformers

Accuracy is, and probably will always be, a contested subject. Even the readings on the most sensitive gauges ever made will be subject to factors beyond anyone's control. This is why it's reasonable to consider a margin of error every time you take a measurement, especially when it comes to currents.

Given that current transformers are always on the lookout for unusual energy spikes, accuracy must be their most defining feature. They don't have to be perfectly accurate, just accurate enough to confirm the readings and help managers make sound decisions. However, no one-size-fits-all transformer exists at present.