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AMPERIS AMPI-540 Multifunction Meter with Power Quality Recorder

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A multifunction meter with a class S recorder and a 7-inch touchscreen

Multifunction electrical installation meters

Image: Sonel MPI-540 showing an L-N loop impedance result: Z = 1.783 Ω with a prospective short-circuit current of 125.0 A.

AMPI-540

Multifunction meter with power quality recorder

C/ María Barbeito, 14Contact Contact T [+34] 982 20 99 20
27003, Lugo, SpainT [+34] 982 20 99 20 info@amperis.com | www.amperis.com

Installation verification and three-phase power quality logging to EN 61000-4-30 class S in one device.

Product overview

Image: The AMPI-540 with its 7-inch touch panel

Much more than a multifunction meter

The AMPI-540 measures every parameter of protection against electric shock — fault loop also in RCD circuits without tripping, RCD parameters, insulation, earth by four methods with soil resistivity, continuity, light intensity, phase sequence and motor rotation — and adds a three-phase recorder of power quality parameters in class S of EN 61000-4-30, with voltages up to 500 V, currents up to 3 kA, harmonics up to the 40th and THD.

Touch control and automated work

The 7-inch TFT touchscreen of 800 × 480 pixels shows built-in help diagrams, an oscilloscope view, phasor diagrams and live readings. Autotest sequences, the automatic RCD mode and the AutoISO-1000C adapter shorten the work, a voice note or photograph documents each result, and the removable microSD card together with USB, Bluetooth and Wi-Fi moves the data quickly from measurement to report.

Main features

  • All shock protection measurements in a single instrument.
  • Three-phase class S recorder to EN 61000-4-30 with harmonics and THD.
  • 7-inch TFT touchscreen of 800 × 480 pixels with help screens.
  • Autotest sequences and automatic RCD testing mode.
  • Removable microSD card; voice notes and photos attached to results.
  • USB, Bluetooth and Wi-Fi with an 11.1 V 3.4 Ah Li-Ion battery.

Applications and design

Applications

  • Verification of domestic and industrial installations to current regulations.
  • Power quality logging and diagnostics of three-phase LV networks.
  • Energy loss estimation with the built-in calculator.
  • Documented measurement campaigns with fast reporting.

Robust and portable design

The IP51 housing of 288 × 223 × 75 mm and about 2.5 kg carries a CAT IV 300 V measuring category and works from 0 to +45 °C; the rechargeable Li-Ion battery of 11.1 V and 3.4 Ah extends the operating time on site.

Installation results become verification reports, and the recorded supply data is analysed in depth on the PC.

Software & applications

Image: Time plots of the recorded voltages and currents with zoom over any interval

Preview of a verification report of the installation, ready to print or export

Downloads and installation reports

The results move from the microSD card of the AMPI-540 to the PC through USB, Bluetooth or Wi-Fi. The free reading software prints and exports them, and a documentation package builds the complete verification protocol of the installation — inspectors, circuits and test points — on any Windows computer.

The recorder, under analysis

The recordings of the built-in power quality logger open in the Amperis Analysis software: time plots of voltage, current, power and energy, harmonic analysis with THD, and dips, swells and interruptions listed with their waveforms. The report checks the recorded supply against the EN 50160 limits and exports data and charts to popular formats.

What the software provides

  • Free reading software and report package for Windows.
  • Interactive graphs and tables of every recorded parameter.
  • EN 50160 compliance reports of the measured supply.
  • Export of data and charts to popular formats.
AMPI-540 — TECHNICAL SPECIFICATIONS
Display7-inch touchscreen, TFT 800 × 480 pixels
Fault loopAlso in RCD circuits, without tripping
RCD testingRCD parameters; automatic mode and autotest
InsulationTest voltages up to 1000 V; AutoISO-1000C
EarthFour measuring methods plus soil resistivity
ContinuityProtective and equipotential bondings
Other functionsLight intensity, phase sequence, motor rotation
Recorder classThree-phase, class S per EN 61000-4-30
Recording rangesU up to 500 V; I up to 3 kA; 40…70 Hz
Power qualityP, Q, S, PF, cosφ; harmonics to 40th; THD
MemoryRemovable microSD card (4 GB); voice notes, photos
CommunicationUSB, Bluetooth and Wi-Fi
Power supplyLi-Ion battery 11.1 V 3.4 Ah with charger
Measuring categoryCAT IV 300 V / CAT III 500 V; IP51
Operating temperature0…+45 °C
Dimensions and weight288 × 223 × 75 mm; approx. 2.5 kg

AMPI-540 — MEASUREMENT DATA (1/2)

Electrical installation measurements

Measurement functionMeasuring rangeDisplay rangeResolutionAccuracy
Fault loop impedance Z, Z, Z
ZL-PE, ZL-N, ZL-L0.13 Ω…1999.9 Ω (IEC 61557)0.000 Ω…1999.9 Ωfrom 0.001 Ω±(5% m.v. + 30 digits)
ZL-PE RCD (without tripping the RCD)from 0.50 Ω…1999 Ω (IEC 61557)0.00 Ω…1999 Ωfrom 0.01 Ωfrom ±(6% m.v. + 5 digits)
ZL-PE RCD (without tripping the RCD) RCD parameters — tA at 0.5 / 1 / 2 / 5 IΔn; IA at 0.2…2.0 tA — general and short-time delay RCDs0 IΔn 0 ms…300 ms0 ms…300 ms1 msfrom ±(2% m.v. + 2 digits)
tA — general and short-time delay RCDs t — selective RCDs0 ms…300 ms0 ms…300 ms1 msfrom ±(2% m.v. + 2 digits)
tA — selective RCDs0 ms…500 ms0 ms…500 ms1 msfrom ±(2% m.v. + 2 digits)
IA — sinusoidal residual current (type AC) I — unidirectional current, also with 6 mA DC bias3.3 mA…1000 mA3.3 mA…1000 mAfrom 0.1 mA±5% IΔn
IA — unidirectional current, also with 6 mA DC bias (type A)3.5 mA…700 mA3.5 mA…700 mAfrom 0.1 mA±10% IΔn
IA — direct residual current (type B)2.0 mA…1000 mA2.0 mA…1000 mAfrom 0.1 mA±10% IΔn
Earth resistance and soil resistivity
3- and 4-pole method 3-pole + clamp methodfrom 0.50 Ω…1.99 kΩ (IEC 61557-5)0.00 Ω…1.99 kΩfrom 0.01 Ωfrom ±(2% m.v. + 3 digits)
3-pole + clamp method0.00 Ω…1.99 kΩ0.00 Ω…1.99 kΩfrom 0.01 Ωfrom ±(2% m.v. + 4 digits)
2-clamp method Soil resistivity0.00 Ω…99.9 kΩ0.00 Ω…99.9 kΩfrom 0.01 Ωfrom ±(10% m.v. + 4 digits)
Soil resistivity0.0 Ωm…99.9 kΩm0.0 Ωm…99.9 kΩmfrom 0.1 Ωmdepends on the accuracy of the RE measurement
Insulation resistance U = 50 V50 kΩ…250 MΩ (IEC 61557-2)0 kΩ…250 MΩfrom 1 kΩfrom ±(3% m.v. + 8 digits)
UISO = 50 V U = 100 V50 kΩ…250 MΩ (IEC 61557-2)0 kΩ…250 MΩfrom 1 kΩfrom ±(3% m.v. + 8 digits)
UISO = 100 V100 kΩ…500 MΩ (IEC 61557-2)0 kΩ…500 MΩfrom 1 kΩfrom ±(3% m.v. + 8 digits)
UISO = 250 V250 kΩ…999 MΩ (IEC 61557-2)0 kΩ…999 MΩfrom 1 kΩfrom ±(3% m.v. + 8 digits)
UISO = 500 V500 kΩ…2.00 GΩ (IEC 61557-2)0 kΩ…2.00 GΩfrom 1 kΩfrom ±(3% m.v. + 8 digits)
UISO = 1000 V "m.v." – measured value.1000 kΩ…4.99 GΩ (IEC 61557-2)0 kΩ…9.99 GΩfrom 1 kΩfrom ±(3% m.v. + 8 digits)
Contact Contact

AMPI-540 — MEASUREMENT DATA (2/2)

Electrical installation measurements (continued)

Measurement functionMeasuring rangeDisplay rangeResolutionAccuracy
Continuity of protective conductors and eequipotential bondings
With ±200 mA test current0.12 Ω…400 Ω (IEC 61557-4)0.00 Ω…400 Ωfrom 0.01 Ω±(2% m.v. + 3 digits)
Low-current measurement0.0 Ω…1999 Ω0.0 Ω…1999 Ω0.1 Ω±(3% m.v. + 3 digits)
Light intensity
In lux (lx)0 lx…399.9 klx0 lx…399.9 klxfrom 0.001 lxfrom ±(2% m.v. + 5 digits)
In foot-candles (fc)0 fc…39.99 kfc0 fc…39.99 kfcfrom 0.001 fcfrom ±(2% m.v. + 5 digits)

Phase sequence indication: same direction (correct) / opposite direction (incorrect); UL-L 95…500 V, 45…65 Hz.

Three-phase power quality recorder — EN 61000-4-30 class S

ParameterMeasuring rangeMax. resolutionAccuracy
Alternating voltage (TRMS)0.0…500 V0.01% Unom±0.5% Unom
Alternating current (TRMS)depending on the clamp*0.01% Inom±2% m.v. (m.v. ≥ 10% Inom); ±2% Inom (m.v. < 10% Inom)
Frequency40.00…70.00 Hz0.01 Hz±0.05 Hz
Active, reactive, apparent and distortion powerdepending on the configuration (transducers, clamps)4 significant digitsdepending on the configuration (transducers, clamps)
Active, reactive and apparent energydepending on the configuration (transducers, clamps)4 significant digitsas the power error
cosφ and power factor (PF)0.00…1.000.01±0.03
Voltage harmonicsas for voltage (TRMS)as for voltage (TRMS)±5% m.v. (m.v. ≥ 3% Unom); ±0.15% Unom (m.v. < 3% Unom)
Current harmonicsas for current (TRMS)as for current (TRMS)±5% m.v. (m.v. ≥ 10% Inom); ±0.5% Inom (m.v. < 10% Inom)
THD of voltage and current0.0…100.0% (relative to RMS)0.1%±5%
Unbalance factor (U and I)0.0…10.0%0.1%±0.15% (absolute error)

* F-1A, F-2A, F-3A clamps: 0…3000 A AC (10 000 Ap-p); C-4A: 0…1000 A AC (3600 Ap-p); C-5A: 0…1000 A AC / 0…1400 A DC (3600 Ap-p); C-6A: 0…12 A AC (36 Ap-p); C-7A: 0…100 A AC (360 Ap-p). The current accuracy does not include the clamp error. Recorder for 64/110 V…290/500 V and DC networks, 50/60 Hz; single-phase, split-phase and three-phase wye or delta systems.

"m.v." – measured value.

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