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.
http://blog.aimdynamics.com/flexible-current-transformers-mitigate-the-effects-of-power-surges/
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.
http://blog.aimdynamics.com/ac-and-dc-current-transformer-customizations-available-in-aim-dynamics/
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.
http://blog.aimdynamics.com/split-core-current-transformer-dealer-now-offers-adc-to-vac-transducer/
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.
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