Energized Testing Questions
All of our main competitors offer limited ability for fully analyzing incoming power to the motor system. The ATPOL II™ when using the Power Analysis function offers the following features:
Power Quality Data Logging
3 channels of voltage and 4 channels of current logging
125KHz sample rate
Waveform capture of events ≥ 1/2 cycle (monitors all three phases simultaneously)
Transient detection of events ≥ 8 micro-seconds (monitors all three phases simultaneously)
Energy data logging (V, I, Power, Power Factor, THD, KWH, KWH reported in dollars on energy consumed, etc.)
Harmonic analysis to 63rd (V & I)
Pre-set and easy to report templates
Report energy savings using a before and after analysis function
No. You are correct that some companies collect waveform data for 3-phases of V & I, but the trade off is the equipment is much larger and typically has limited battery life when compared to the ATPOL II™.
A single phase of voltage and current waveforms and the resulting FFT analysis are all that is required to do a complete evaluation of the entire Electrical Motor System as described in our literature and what is displayed in the automatically generated software report.
The ATPOL II™ does collect voltage and current measurements on all 3-phases for power calculations and analysis, but for detection of problems related to stator slots and rotor bars plus mechanical system, it uses one phase of voltage and current FFT.
A 3-phase FFT is not required for the types of electrical and mechanical problems the instrument software will evaluate for. Therefore, this allows us to use a small, handheld, battery operated data collector instead of a system built around a laptop computer.
All of our main competitors have built their instruments around a laptop computer so they are much larger, heavier, and have a more limited battery life compared to the ATPOL II™.
Additionally, they do not offer a Bluetooth wireless interface which means the user must stand in front of an energized panel while collecting the motor data. This means they are exposed to a potential Arc Flash event.
The ATPOL II™ software has a virtual instrument mode that allows for remote connection and control via the Bluetooth interface. Therefore, the user can control the ATPOL II™ from a laptop computer up to 10 meters away (depending upon local RF interference), which improves the safety of the user.
Moreover, when performing on-line motor testing the ATPOL II™ is just a data collector so there is no need to take a computer into the field when testing. The ATPOL II™'s SD memory card will hold thousands of test files so there is no need for a large computer drive for test data storage.
No. Our main competitors reduce line voltage inside their connection boxes. The ALL-SAFE PRO® connection box passes through the line voltage without any loss in signal. Anytime you reduce a signal you lose a little in the process and we believe this is a clear competitive advantage. Therefore, when connected to a 575V AC motor, the ATPOL II™ via the ALL-SAFE PRO® connection box is working with full line voltage. Of course, for systems over 600 Vrms potential transformers are required.
Additionally, we offer as standard configuration current transformers for the ALL-SAFE PRO® with an insulation class rating of 5000V. Therefore, you can use our current transformers on motor systems up to 5000V. The typical current transformers that are used in a machine metering system have poor accuracy and frequency response, so you again lose some signal due to the poor quality current transformers. The current transformers used with the ALL-SAFE PRO® are of higher accuracy and response range when compared to common current transformers. Of course, you will still need to install potential transformers for voltages above 600Vrms.
We offer on a special order basis split core current transformers so they can be installed without dropping the phase leads.
We take safety very seriously and the ALL-SAFE PRO® connection box has an interlock system that will not allow line voltage to be passed unless the instrument is fully connected and the instrument detects current on phase A. Therefore, when the instrument is not connected to the ALL-SAFE PRO® plant personnel are not exposed to hazardous voltages.