HT instruments FULLTEST3 - Manual (Page 45)

FULLTEST 3
EN - 44
5.8.3. U RES DISPLAY EXPLANATION
Selectable parameters:
MODE - measurement mode LINEAR or NONLINEAR
CON - connection INT (measurement on internal components) or PLUG (measurement on
1P/3P plug)
LIMIT t - limit time 1 s or 5 s
Figure 32 : Display with U RES test result
1 ..... Selected function.
2 ..... Input voltage U IN and trigger voltage U TRIG .
3 ..... Measurement screen touch-screen key.
4 ..... MODE touch-screen key to select measurement mode (LINEAR or NONLINEAR). Currently
selected mode is displayed on the bottom of the key.
5 ..... CON (connection) touch-screen key to select measurement connection (INT or PLUG). Currently
selected connection is displayed on the bottom of the key.
6 ..... LIMIT t touch-screen key to select limit time (1 s or 5 s), valid for internal measurement only.
Currently selected limit value is displayed on the bottom of the key.
7 ..... Measurement result (in green colour - result OK, in red colour - result not OK).
8 ..... Real time clock (hh.mm.ss).
9 ..... Unit of the test result. As measured U RES voltage may be alternating or direct there is an
appropriate information AC or DC added to the unit.
10 ... Measurement result status (symbol in green colour - result OK, symbol in red colour - result
not OK).
5.8.4. TRIGGER CONDITIONS
The instrument recognizes disconnection of mains voltage on TRIG input (INT measurement) or on
U
RES input (PLUG measurement) when one of the following two conditions occurs:
 If mean value of rectified input voltage drops down with a slope of at least 25 V / s (mean value
measured each period), then trigger is activated and the measurement starts to run.
This condition will occur for example if AC or DC input voltage starts to decrease.
 Momentary value of current half period is compared with momentary value of previous half period
(the same polarity). If there is a difference higher than 10%, then trigger is activated and the
measurement starts to run.
This condition will occur for example if AC voltage changes to DC.
The above two conditions are active on U RES input in PLUG mode and on U TRIG input in INT mode.