Bender B93100735, Manual

Page: 109 / 116

Glossary and terms
109 PEM735_D00084_02_M_XXEN/06.2020
Voltage swell
(polyphase sys-
tem)
Starts when the U
rms
voltage of at least one
channel is above the swell threshold; ends when
the
U
rms
voltage on all measured channels is
equal to or below the swell threshold minus the
hysteresis voltage; Typically, the swell threshold
is > 110 % of
U
din
; Typically, the hysteresis is
equal to 2 % of U
din
Voltage inter-
ruption
(single-phase
system)
Starts when the U
rms
voltage falls below the volt-
age interruption threshold; ends when the U
rms
voltage is equal to or greater than the voltage
interruption threshold plus the hysteresis
Typically, the swell threshold for voltage inter-
ruptions is 5 % or 10 % of
U
din
; Typically, the hys-
teresis is equal to 2 % of U
din
Voltage inter-
ruption (poly-
phase system)
Starts when U
rms
on all measured channels falls
below the voltage interruption swell threshold;
ends when
U
rms
on any measured channel is
equal to or greater than the interruption thresh-
old plus the hysteresis; Typically, the swell
threshold for voltage interruptions is 5 % or 10 %
of
U
din
; Typically, the hysteresis is equal to 2 % of
U
din
Standard data
recorder
DR 1…16
Trigger: timer or setpoint
Recording mode "Stop when full" or "FIFO"
Recording interval 1…3,456,000 seconds
(40 days)
Number of data points: max. 65535
for each DR 0…16 measured quantities, can be
selected from 1741 measured quantities
Timer for trigger mode: Recording delay
0…43200 s (12 h)
TEHD
Total Even Harmonic
Distortion
Total even harmonic distortion
THD
Total Harmonic
Distortion
Total harmonic distortion
Abbreviation/
Term
Long form Description