HT instruments PQA820 - Manual (Page 14)

PQA820
EN – 13
6. MEASURING PROCEDURES
6.1. CONNECTION IN A SINGLE-PHASE SYSTEM
CAUTION
 The maximum rated voltage between inputs is 415V AC, CAT IV 300V to
earth. Do not connect the instrument to voltages exceeding the limits given
in this manual
 The rated supply voltage of the instrument (red-yellow terminals) must be
within the range: 100
 415V, 50/60Hz
Fig. 2: Connection of the instrument to a single-phase system
CAUTION
If possible, cut out the power supply of the electrical system to be measured
before connecting the instrument.
1. Check and, if necessary, change the basic settings of the instrument (see § 5). In
particular set the Single-phase mode.
2. Connect the supply terminals (red and yellow) respecting the connections indicated in
Fig. 2
3. Connect the cables of the L1-N voltages, respecting the connections indicated in the Fig. 2
4. If you want to measure current and power, connect the clamp meter to the phase
conductor, respecting the direction indicated on the clamp and the connections
indicated in the Fig. 2
5. Connect the electrical system to be measured to voltage in case the system has been
momentarily put out of order to connect the instrument.
6. Check that the Error LED is off. In case it is on steady, check that the clamp meter is
connected respecting the direction indicated.
7. In case a USB or WiFi connection (see § 9) with a device is active on which a
management software is installed, the values of the available electrical quantities will
appear on the device's display. For further information, please refer to the on-line guide
of the management software.
8. If you want to record:
 Check and, if necessary, change the values of the basic parameters (see § 5)
 To start recording, press the START/STOP key (see § 7).