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Measuring Linear and Non-Linear AC Waveforms with CurrentWatch

From Eaton's Cutler-Hammer Sensors
 

 
Variable frequency drives (VFDs) improve control and conserve energy by regulating motor speed. The most common types are PWM (pulse width modulation) and Six Step. Both technologies are based on high speed switching, which distorts the AC sine wave and can make accurate current sensing difficult.
Products & Services
Current sensors measure AC and/or DC current levels. They receive current inputs and provide outputs as analog voltage signals, analog current levels, switches, or audible signals. Search by Specification | Learn more about Current Sensors
Ground resistance testers are devices that are used to measure and test electrical grounding systems. Grounding enables optimum electrical continuity between conducting objects and earth. Search by Specification | Learn more about Ground Resistance Testers
Proximity sensors, all types is a general search form for all proximity sensors and presence detection product areas. Search by Specification | Learn more about Proximity Sensors
Photoelectric safety sensors detect objects by using the properties of light sensitive elements. Learn more about Photoelectric Safety Sensors
Magnetic proximity sensors include devices that work on inductive, variable reluctance, magneto resistive or Hall effect principles. Proximity sensors detect the presence or absence of an object using a critical distance. Search by Specification | Learn more about Magnetic Proximity Sensors
Product Announcements
Eaton's Cutler-Hammer Sensors - CurrentWatch™ Current Sensors
CurrentWatch™ is a complete line of current sensors, switches and ground fault devices. Capable of measuring both AC and DC current, these products are ideal for monitoring power use and... (read more)
MTE Corporation - Sine Wave filters
New MTE Sine Wave filters provide sine wave output voltage when driven from PWM inverters, eliminating motor insulation failures, reduce EMI and help meet IEEE-519 for cable lengths up to 15,000 feet... (read more)
Vitrek Corporation - Function/Arbitrary Waveform Generators-22 Models
Signal Generator's, Programmable 30MHz Arbitrary Waveform Generators, 15 MHz Function Generators/built-in Frequency counters, Audio Oscillators and RF Generators. Instek's SFG-830 is a Direct Digital... (read more)
Unipower Corporation - Inverters
Leading power specialist UNIPOWER Corporation announces a new series of rack-mount sine wave inverters that will find wide application in telecoms systems. The Scimitar Series are 1U high, 1kVA and... (read more)
Continental Resources, Inc. - Agilent 33210A
The Agilent 33210A 10MHz function generator with optional arbitrary waveform generation, offers uncompromising performance at a lower price for basic functions and waveforms. With standard waveforms... (read more)
MetricTest - Get Different Signals From One Generator!
Agilent 81150A Pulse Function Arbitrary Noise Generator Key Features 120 MHz pulse generation with variable rise / fall time and a trigger up to 120 MHz 240 MHz sine waveform output 14 bit, 2... (read more)
TCI, LLC (Trans-Coil International) - V1k Motor Protection Output Filter
Greatly reduces motor failures. Limits the magnitude of voltage spikes to levels below 1000 V. (read more)
Fotronic Corporation / Test Equipment Depot - Altek 942 Frequency Calibrator with Totalizer
Calibrate turbine meters, frequency counters, vibration systems, vortex shedders, integrators and any other frequency devices in the shop with the Altek 942. Measure from 0.01 Hz to 250.00 KHz with... (read more)
Topics of Interest
CurrentWatch™ current switches and sensors are designed to fulfill the sensing requirements of as many applications as possible, while keeping the number of stocked sensors to a minimum. This is... (Read More)
In a dc machine, the mechanical commutator ensures that current flows in the machine windings in a manner that will produce useful torque, even when the rotor changes position and speed. From a... (Read More)
The need for controlling the level of harmonic current in power distribution systems is widely recognized as an important factor in selecting and applying adjustable speed drives and other non-linear... (Read More)
As described in Chapter 3, all DC/AC pulse-width-modulation (PWM) inverters are treated as a first-order-hold (FOH) element in digital control systems. We will discuss this model in various circuits... (Read More)
Many embedded applications require the generation of analog signals. Although separate D/A converter IC?s exist on the market today, their extra price makes them prohibitive in cost sensitive embedded... (Read More)
See more product announcements for Current Sensors
Model 173 - AC Current Monitor

Model 173 - AC Current Monitor
Time Mark Corporation


920 Series DC Current Transducer

920 Series DC Current Transducer
American Aerospace Controls, Inc.


Model 273 - Single Phase Current Monitor

Model 273 - Single Phase Current Monitor
Time Mark Corporation


11 See more product announcements for Current Sensors