HT Italia PQA824 Professional Power Quality Analyzer with Voltage Spike & Fast Transient Detection

Key Features At A Glance

• CAT IV 600 V to ground, max 1000 V between inputs — three-phase distribution and service-entrance rated
• 320x240 color TFT touchscreen with synoptic connection diagrams to guide hookup on the installation
• Records voltage anomalies (sags/swells) with 10 ms resolution and voltage/current harmonics through the 49th order
• Flicker per IEC/EN 61000-4-15 and EN 50160; voltage unbalance per IEC/EN 61000-4-7 and EN 50160
• Inrush current capture with 10 ms time resolution, up to 1000 events
• Compliant with IEC/EN 61000-4-30 Class B for power quality measurement methods
• Simultaneous recording of voltages, currents, power, energy, harmonics, anomalies, flicker, and unbalance to 15 MB internal memory with USB pen drive and CompactFlash expansion

The HT Italia PQA823 is a professional three-phase power quality analyzer designed to evaluate electrical installations against the EN 50160 supply-voltage characteristics standard. The instrument is a handheld, battery-powered unit (Li-ION, 3.7 V, greater than 6 hours of battery life) built around a 320x240 color TFT touchscreen that uses an icon-driven interface and on-screen synoptic connection schematics to guide users through wiring the analyzer to single-phase or three-phase systems.

The datasheet positions the PQA823 for the measurements typically required during EN 50160 power-quality surveys: phase-to-phase, phase-to-neutral, and phase-to-ground TRMS voltages, phase and neutral TRMS currents, active/reactive/apparent power and energy, power factor, voltage and current harmonics through the 49th order, voltage anomalies (sags and swells) with 10 ms resolution, flicker, voltage unbalance, and inrush current events. A vectorial diagram view displays the mutual phase relationships between voltage and current phasors during commissioning and troubleshooting.

ValueTronics International stores and tests this analyzer in our 20,000 square foot secure facility at 1675 Cambridge Drive, Elgin, Illinois. Every new PQA823 we ship is processed by our technical team in-house — not drop-shipped from a third-party warehouse — so the unit you receive has been physically handled and prepared by the same group that prepared the listing.

Brand Heritage

HT Italia S.r.l. is an Italian test-and-measurement manufacturer headquartered in Faenza (Ravenna), Italy. The company has operated under the HT Italia name continuously and has not been the subject of a major rebranding or acquisition affecting this product family.

Compare Other Models in This Series

The HT Italia PQA800 family is a pair of professional three-phase power quality analyzers built on a common handheld touchscreen platform. Both models are designed for EN 50160 supply-voltage surveys and share the same TRMS voltage and current measurement ranges, harmonic analysis through the 49th order, flicker, unbalance, anomaly capture at 10 ms resolution, and inrush current recording capabilities.

The two models differ in one specific capability area called out on the datasheet's model-comparison table: voltage spike and fast transient capture at 5 microsecond resolution. The remainder of the measurement set — including all TRMS, power, energy, harmonic, flicker, unbalance, and anomaly functions — is identical between the two units.

Each model in the PQA800 family is listed on its own product page with condition-matched pricing. The new PQA823 shown here is offered as a distinct line item from the PQA824; review the comparison table below to confirm which feature set matches your measurement requirements before selecting a model.

The PQA823 covers the complete EN 50160 measurement set — TRMS voltages and currents, power and energy, harmonics through the 49th order, flicker, unbalance, voltage anomalies at 10 ms resolution, and inrush current events. The datasheet's model-comparison table indicates that voltage spike and fast transient capture at 5 microsecond resolution is the feature that distinguishes the higher PQA824 model from this unit.

Within the PQA800 family the differentiator called out in the datasheet's feature-by-model table is voltage spike and fast transient capture: the PQA824 adds detection of voltage spikes on phase-to-ground inputs with 5 microsecond timing resolution, configurable spike thresholds from 100 V to 5000 V, and storage for up to 20,000 spike events, while the PQA823 does not include this capability.

All other listed measurements — phase-phase, phase-neutral, and phase-ground TRMS voltages, DC voltages, phase and neutral TRMS currents, DC currents, power factor, active/reactive/apparent power and energy, DC power, voltage and current harmonics through the 49th order, voltage anomalies with 10 ms resolution, flicker per EN 50160, voltage unbalance per EN 50160, and inrush current capture — are common to both models per the datasheet's comparison table.

Model	Voltage Spikes & Fast Transients	Voltage Range (Ph-N/Ph-G)	Voltage Range (Ph-Ph)
PQA824	Included (5 µs resolution)	2.0 to 600.0 V	2.0 to 1000.0 V
PQA823	Not included	2.0 to 600.0 V	2.0 to 1000.0 V

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Product Core & Specifications

Specification	Value
Voltage Spikes – Phase-Ground Voltage single / three phase systems (PQA824 only)
Range	-1000 to -100 V; 100 to 1000 V (SLOW) · -6000 to -100 V; 100 to 6000 V (FAST)
Voltage resolution	1 V (SLOW) · 15 V (FAST)
Voltage accuracy	±(2.0%rdg + 60V) SLOW · ±(10%rdg + 100V) FAST
Time accuracy (50Hz)	±10 ms
Detection time (50Hz)	78 µs – 2.5 ms (SLOW) · 20 µs – 160 µs (FAST)
Detection threshold	Selectable from 100 V to 5000 V
Max number of detectable events	20000

Important: Maximum input ratings: CAT IV 600 V to ground, 1000 V maximum between inputs. Operating temperature 0 °C to 40 °C, humidity less than 80% RH.Important: Voltage spike and fast transient detection (5 µs resolution) is available on the PQA824 model only; the PQA823 does not include this measurement function.Important: Current measurement requires a transducer clamp (standard STD clamp or FlexINT flexible transducer). Accuracy specifications are stated with the transducer excluded; select and order the appropriate clamp separately based on the current range required.Important: Overvoltage category is CAT IV 600V to ground, with a maximum of 1000V between inputs. Maximum operating altitude is 2000 m.

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.