HT instruments PQA824 - Manual (Page 59)

PQA400 - PQA823 - PQA824
EN - 58
Press SAVE or ENTER keys (or the smart icon ) to save each selection and confirm by
“Ok” . The main screen of Fig. 89 is shown by meter at the end of the operation.
Press ESC key (or the smart icon ) to quit without saving and go back to previous
screens.
5.4.10. Unbalance
The selection of this option include on selected parameters list for recording the value of
NEG% and ZERO% s which are index of unbalance of input voltage signal respective to
negative tern and zero term (see § 10.5). “Unbalance” is not shown for single phase
systems.
5.4.11. Spike (only PQA824)
This option permits to set the control parameters relative to recording of voltage fast
transients (spike) events (see § 10.6) with 5
s resolution which is completely independent
from periodic analysis (regulated by integration period). The below screen is shown by
meter:
12/09/2006 – 16:55:10
RECORDING SETTINGS

+ Harmonics
Voltage Anom.: 230V 6%-10%
Inrush current: 30A 1s fix
Flicker
Unbalance
 Spike: 150V 
100/251 Parameters – Autonomy: 21d 0h
CLP/EXP PREDEF. SEL MODIFY
Fig. 110: Spike setting screen
Press F4 key (alternatively touch MODIFY at display) for setting the parameter for
detection and recording of voltage spikes. In particular is possible to set:
 The value of voltage threshold to detection and recording the voltage spike event from
meter. This value s selectable from 100V and 5000V value.
12/09/2006 – 16:55:10
RECORDING SETTINGS

+ Harmonics
Voltage Anom.: 230V 6%-10%
Inrush current: 30A 1s fix
Flicker
Unbalance
 Spike: 150V 
Spike: 150
MOD(+) MOD(-)
Fig. 111: Spike screen - setting control parameter
1. Move the cursor using arrows keys on field relative to “Spike” , marked it with blue
background.