|
Seltrol is a stocking distributor of a wide variety of industrial automation equipment. We are located in South Carolina and service SC and NC. Our inside and outside sales staff are available to assist you with your application. We provide technical - application support for all of our products. |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Current Transformer Overview VFD and SCR output waveforms are rough approximations of a sine wave. There are numerous spikes and dips in each cycle. ATR transducers use a mathematical algorithm called "True RMS," which integrates the actual waveform over time. The output is the amperage component of the true power (heating value) of the AC current waveform. True RMS is the only way to accurately measure distorted AC waveforms. Select ATR transducers for nonlinear loads or in "noisy" power environments. The current waveform of a typical linear load is a pure sine wave. AT transducers measure the peaks of these sine waves, then calculate the average amperage. This works well on constant speed linear loads in a "clean" power environment. Select AT transducers for strictly linear loads on "clean" power.
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
ATR transducers from NK Technologies combine a current transformer and a True RMS signal conditioner into a single package. The ATR Series provides True RMS output on distorted waveforms found on VFD or SCR outputs and on linear loads in "noisy" power environments. Available in a solid or split core case. Applications
VFD output indicates how the motor and attached load are operating.
Eliminates zero and span pots. Eliminates insertion loss (voltage drop). Specifications
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
AT Current Transducers from NK Technologies combine a current transformer and signal conditioner into a single package. The AT Series has jumper selected current input ranges and industry standard 420mA, 05VDC or 0-10VDC outputs. The AT Series is designed for application on linear or sinusoidal AC loads. Available in a split core case or two types of solid core cases.
Analog current reading for remote monitoring and software alarms. Self-powered transducer does not drain data logger batteries. Simple connection displays power consumption. Features
Eliminates zero and span pots. Eliminates insertion loss (voltage drop).
Specifications
*For sinusoidal waveforms only. Select ATR Transducers for distorted waveforms |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
'AT/ATR 3 & 4' transducers from NK Technologies combine a high capacity current transformer and a signal conditioner into a single package. The AT version is Average Responding for use on linear (sinusoidal) loads. The ATR version is True RMS for use on distorted waveforms found in VFD or SCR outputs. Available in a solid or split core case.Applications
Detect dry run electronically. Measure the output of generators. Monitors heater load. Faster response than temperature sensors. Features
Accommodates large conductors or wire bundles. True RMS technology is accurate on distorted waveforms like VFD or SCR outputs. Average Responding-for linear, sinusoidal waveforms Reduces inventory. Eliminates zero and span pots. Magnetic isolation protects installers and systems. Single piece with integral mounting brackets makes for a simple, solid installation. Accepted worldwide.
Specifications
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
'DT' Current Transducers from NK Technologies combine a Hall effect sensor and signal conditioner into a single package. The DT Series has jumper selectable current input ranges and industry standard 0-20mA, 4-20mA, 0-3VDC, 0-5VDC or 0-10VDC outputs. Available in a split core package.
Monitors load current. Monitors charging current. Verifies operation. Measures traction power or auxiliary loads. Faster response than temperature sensors. Features
Reduces inventory. Eliminates zero and span pots. Output is magnetically isolated from the input for safety. Eliminates insertion loss (voltage drop). Works well, even with unregulated power. Cuts installation costs. Split core design with built-in mounting brackets makes installation a snap.
Specifications
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
)
)
)
)
)