HT instruments PQA824 User Manual
Page 132
PQA400 - PQA823 - PQA824
EN - 131
10.3. INRUSH CURRENTS (ONLY PQA82X)
The PQA82x meters permits the real time detection of inrush current events, typical of
start-up of electrical machines and also for other industrial applications (e.g.
troubleshooting problem regarding loads switching, correct calculation of protection
devices, oscillating currents, etc…) as shown in the following pictures:
Fig. 208: Parameters of standard inrush current event
Fig. 209: Parameters of oscillating inrush current event
The meter detect and recording as inrush current all the events where the phase currents
TRMS values are over a set limit threshold. The maximum number of recorded events is
fixed to 1000.
During setting operation before recording start the user can be modify the below
parameters:
Current limit threshold:
Current value of detection and recording of the event.
The maximum set value of this parameter is always
equal to the full scale of used transducer clamps.