±8000 V transients at 10 MHz and remote operation over Wi-Fi or 4G
APQM-711
Power quality analysers
APQM-711
Class A power quality analyser
Class A analysis for every network from 110 to 1000 V, operated entirely from a distance.
Class A, with evidential value
The APQM-711 measures per class A of IEC 61000-4-30: voltage to ±0.1% Unom, frequency to ±0.01 Hz, flicker in class A per IEC 61000-4-15 and unbalance to ±0.15%. Five voltage inputs and four current inputs — up to 6 kA depending on the clamp — cover networks from 64/110 V to 480/830 V, in DC and from 40 to 70 Hz.
Transients and harmonics under the microscope
The transient recorder samples at 10 MHz and captures ±8000 V phenomena from 650 ns. Harmonics and interharmonics up to the 50th order, THD, the K factor of transformers, control signals up to 3000 Hz and powers after Budeanu and IEEE 1459 complete the analysis, with event waveforms up to 1 s and 30 s half-cycle RMS graphs.
Main features
- Built-in GSM 4G LTE modem for remote reading.
- Wi-Fi module for local operation without cables.
- GPS receiver: synchronised clock and anti-theft SMS alert.
- Four-quadrant analysis for producers and consumers.
- Voltage and current events with oscillograms.
- EN 50160, IEEE 519 and NEC 220.87 reports.
Applications and operation
Applications
- Certifiable analyses and disputes with the distributor.
- Unattended measurement campaigns at substations and networks.
- Photovoltaic and wind farms in four quadrants.
- Investigation of switching and lightning transients.
Operated from anywhere
With no display of its own, the APQM-711 is commanded from the PC analysis software (Windows) or the mobile application (Android): configuration, real-time viewing of waveforms, phasors and harmonics, and download of the records over Wi-Fi or the mobile network — the user supervises the measurement far from the disturbance zones.
The analysis software operates the instrument locally over Wi-Fi or remotely over the mobile network.
Software & applications
Operated from the office
The PC analysis software configures the APQM-711, follows the measurement in real time and downloads the records over Wi-Fi or the integrated GSM 4G LTE modem; the Android mobile application does the same from a tablet next to the machine.
The event and its waveform
Time plots, harmonics and interharmonics up to the 50th order, flicker and unbalance are examined in interactive graphs; dips, swells, interruptions and ±8000 V transients appear in an event list, each linked to its oscillogram, and the EN 50160 report documents compliance.
What the software provides
- Remote reading over Wi-Fi or the 4G LTE modem.
- Mobile application for monitoring on Android.
- Event list with the waveform of each disturbance.
- EN 50160, IEEE 519 and NEC 220.87 reports.
APQM-711 — MEASUREMENT DATA
Analyser parameters
| Parameter | Measuring range | Max. resolution | Accuracy |
|---|---|---|---|
| Alternating voltage (TRMS) | 0.0…1000.0 V (UL-N) | 4 significant digits | ±0.1% Unom |
| Crest factor (voltage) | 1.00…10.00 (≤1.65 / 690 V) | 0.01 | ±5% |
| Crest factor (current) | 1.00…10.00 (≤3.6 / Inom) | 0.01 | ±5% |
| Alternating current (TRMS) | depending on clamp* | 4 significant digits | ±0.1% Inom |
| Frequency | 40.00…70.00 Hz | 0.01 Hz | ±0.01 Hz |
| P, Q, D, S power | depending on configuration (transducers, clamps) | 4 significant digits | depending on configuration (transducers, clamps) |
| Active/reactive/apparent energy | depending on configuration (transducers, clamps) | 4 significant digits | as power error |
| cosφ and power factor (PF) | -1.00…1.00 | 0.01 | ±0.03 |
| tanφ | -10.00…10.00 | 0.01 | depends on P and Q error |
| Voltage harmonics | DC, 1…50 | as voltage TRMS | ±0.05% Unom (<1% Unom); ±5% m.v. (≥1%) |
| Current harmonics | DC, 1…50 | as current TRMS | ±0.15% Inom (<3% Inom); ±5% m.v. (≥3%) |
| THD (U and I) | 0.0…100.0% | 0.1% | ±5% |
| K factor | 1.0…50.0 | 0.1 | ±10% |
| Flicker PST/PLT | 0.20…10.00 | 0.01 | ±5% |
| Unbalance (U and I) | 0.0…20.0% | 0.1% | ±0.15% |
| Control signals (voltage) | ≤15% Unom; 5.00…3000.00 Hz | 4 significant digits | ±0.15…±5% |
| Transients (voltage) | ±8000 V | 4 significant digits | ±(5% + 25 V) |
Measurements in class A per IEC 61000-4-30; flicker in class A per IEC 61000-4-15. Transients: PQM-711 only, 10 MHz sampling, minimum 650 ns.
* Depending on the clamp: F-xA1 0…1500 A, F-xA 0…3000 A, F-xA6 0…6000 A; C-4A/C-5A 0…1000 A (C-5A also 1400 A DC); C-6A 0…12 A; C-7A 0…100 A.
"m.v." = measured value
APQM-711 — TECHNICAL SPECIFICATIONS
| Measurement class | Class A per IEC 61000-4-30 |
|---|---|
| Voltage inputs | 5; networks from 110 to 1000 V |
| Current inputs | 4; up to 6 kA depending on the clamp |
| Rated networks | 64/110…480/830 V; DC; 40…70 Hz; WYE, Delta and Aron systems |
| Recording | Events with waveforms up to 1 s and RMS1/2 graphs of 30 s |
| Communications | GSM 4G LTE modem, Wi-Fi, GPS (anti-theft SMS alert) |
| Operation | PC software (Windows) and mobile app (Android) |
| Software | Analysis software with EN 50160, IEEE 519 and NEC 220.87 reports |
| Quality standard | ISO 9001 |