Published by Dranetz Technologies, Inc.
Below are three situations aviation teams often face, and how the HDPQ Xplorer 400 helps resolve them.
Jetway keeps resetting when an aircraft connects
What’s happening: During bridge movement or aircraft power-up, the 400 Hz supply dips. Sometimes it is a brief sag, other times a fast transient that trips protection.
How the HDPQ helps: The analyzer locks to 400 Hz and records synchronized waveforms, RMS trends, and an event list with timestamps. You see whether the disturbance is a sag, swell, interruption, or inrush, and how deep and long it lasted.
Outcome: Maintenance can point to a specific root cause, such as a voltage sag to 86 percent for 6 cycles during bridge travel, instead of a generic “power issue.” Fixes are targeted and repeat calls drop.
Disputes about parked aircraft energy usage at the gate
What’s happening: Finance wants real numbers for billing or cost allocation, but estimates vary by aircraft type and turn length.
How the HDPQ helps: You get true 400 Hz measurements for kW, kWh, power factor, and demand across a full turn. Results can be grouped by aircraft family and dwell time, with easy-to -read charts.
Outcome: Contract discussions shift from estimates to measured profiles. One hub used profiles to update agreements and reduced variance between billed and actual significantly.
Proving savings after upgrades to support systems
What’s happening: A facilities project replaces conveyors with higher efficiency equipment, and wants to document the manufacturer’s energy savings claim.
How the HDPQ helps: Comparable pre- and post-data sets confirm changes in kW, kWh, demand peaks, and power factor. High-speed capture also shows if inrush or switching transients improved, which affects nuisance trips.
Outcome: Engineering delivers a simple before-versus-after story. The project team validates the savings and identifies additional tweaks, like adjusting start sequences to lower demand spikes.
Why these teams choose the HDPQ Xplorer 400
• Correct 400 Hz synchronization for trustworthy frequency, RMS, and timing
• High-speed event capture that surfaces short sags, transients, and inrush
• Remote viewing from phones, tablets, PCs, and Macs so supervisors can monitor without crowding the gate
Automatic setups and dashboards that keep field work moving and make results easy to share
Dranetz Products: Dranetz HDPQ® Plus & SP Family
Website: Dranetz.com , Call 1-800-372-6832 (US and Canada) or +1-732-287-3680 (International)
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