User manual

1 General Information
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1.2 General characteristics
Power Quality Analyzers PQM-702 and PQM-703 (Fig. 1) are high-tech devices providing their
users with a comprehensive features for measuring, analyzing and recording parameters of 50/60
Hz power networks and power quality in accordance with the European Standard EN 50160. Ana-
lyzers are fully compliant with the requirements of IEC 61000-4-30:2011, Class A.
The device is equipped with five voltage measurement inputs installed as cables terminated
with banana plugs marked as L1, L2, L3, N and PE. The range of voltages measured by four meas-
urement channels is up to ±1500V (the device has two voltage sub-ranges). This range may be
increased by using additional external voltage transformers.
Fig. 1. Power Quality Analyzer. General view.
Measurements are carried out using four current inputs installed on short cables terminated
with clamp terminals. The terminals may be connected to the following clamp types: flexible claps
(marked as F-1, F-2, F-3) with nominal rating up to 3000 A (differing from others only by coil diam-
eter); and hard clamps marked as C-4 (range up to 1000 A AC), C-5 (up to 1000 A AC/DC), C-6 (up
to 10 A AC) and C-7 (up to 100 A AC). The values of nominal measured currents may be changed
by using additional transducers - for example, using a transducer of 100:1 ratio, the user may select
C-4 clamps to measure currents up to 100 kA.
The device has a built-in 8 GB memory card. To guarantee fast data read-out, the analyzer is
equipped with a built-in mass-storage reader, which ensures the data readout with a few MB/s. Data