PMT45000 Power Loss Measurement System
PLMS HV Sensors
PLMS HV Sensors Installed
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PMT45000 Series HV Power Loss Measurment Systems
The PMT45000 series of three phase metering systems are designed for the accurate measurement of rms and average voltage,
current and power in a single phase or three phase test circuit.
The PMT45000 design represents a `next generation' automatic measurement system that effectively improves measurement accuracy
and functionality in comparison to existing products presently offered in the market. As such, the system offers significant
benefits with respect to accurate low power factor loss measurements over a wide dynamic range, as well as enhanced productivity
through automatic data collection and reporting.
The measurement equipment is comprised of an electronics rack encompassing several instruments including potential divider,
current divider and power reference standard. The electronic rack is designed to interface with new high voltage sensors from
Power Measurement Technologies Inc. or existing sensors from Olman / Multi-Amp Canada.
An integral host computer provides a direct, intuitive operator interface based upon the Microsoft Windows 10 operating system.
The 'HVMS Assist' application provides a virtual instrument operator interface to display the various measurements, effect
system control functions, storage of test records, printing of test reports and connection to a local area network as required.
The system is configured to allow convenient calibration that complies with NIST (NBS) Technical Note 1204, "Calibration of Test
Systems for Measuring Power Losses of Transformers".
For high accuracy measurements in single phase circuits, the system requires one of the leads to be at, or near, ground
potential.
The system is suitable for making measurements on power transformers, motors and other power equipment.
--- Measurement System Features ---
- Overall system power measurement accuracy of ±1% at 0.01 power factor and of ±0.2% at 0.05 power factor over normal
operating ranges of voltage and current when interfaced to Power Measurement Technologies sensors.
- Overall system power measurement accuracy of ±2% at 0.01 power factor and of ±0.5% at 0.05 power factor over normal
operating ranges of voltage and current when interfaced to Olman / Multi-Amp sensors.
- Improved voltage, current and nominally high power factor power measurement accuracy of typical ±0.05% and maximum
±0.1% of reading.
- Accurate voltage measurements over a dynamic range of 1,000-to-1.
- Accurate current measurements over a dynamic range of 10,000-to-1.
- Automatic or manual ranging of voltage and current channels.
- RMS or Average responding voltage and current measurements.
- Line-to-Line or Line-To-Ground Voltage Measurement.
- Facility to connect external conventional 120 volt potential transformers and 5 ampere current transformers.
- Voltage and current channel replica signal outputs allow connection to oscilloscope or recorder to observe specimen
excitation waveforms.
- Programmable over-current trip detection.
- Optional indicators to warn of low dielectric gas pressure in HV sensors when interfaced to Power Measurement Technologies
sensors.
- Dell Optiplex small form factor computer system with flat panel touchscreen colour LCD 17" monitor 17", network card and
monochrome laser printer.
- Windows 11 based `HVMS Assist' application software provides virtual instrument graphical touch-screen interface,
Microsoft Access compatible test record database and export to Microsoft Ecel capability.
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