Extech Instruments 382095, Руководство пользователя

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382095 V4.1 7/06 24
5. Press the
▲
or
▼
button to increment or decrement the threshold in % (SDVP). To exit, press the
EXIT button.
6. Press the TRANSIENT button to start the “Transient Capture”
7. The backlight will switch off when the TRANSIENT button is pressed.
8. If the analyzer captures any transient events (DIP, SWELL, or OUTAGE), the backlight will switch on.
Press the TRANSIENT button to review the recorded TRANSIENT events.
9. To exit TRANSIENT CAPTURE, press the EXIT TRANSIENT button.
Definition of SWELL, DIP, and OUTAGE:
SWELL: V
RMS
> [V
REF
+ (V
REF
* SD%)]
Code for SWELL: 1
If the true RMS value of either phase (V1, V2, or V3) rises above the nominal value plus the threshold (REF
+ SD%), it is regarded as SWELL. Code for SWELL is 1.
DIP: V
RMS
< [V
REF
– (V
REF
* SD%)]
Code for DIP: 2
If the true RMS value of either phase (V1, V2, or V3) falls below the nominal value plus the threshold, it is
regarded as DIP. The code for DIP is 2.
OUTAGE: V
RMS
< 30 to 40V
Code for OUTAGE: 4
If the true RMS value of either phase is less than 30 to 40V, it is regarded as OUTAGE. The code for
OUTAGE is 4.
Code Table:
SWELL DIP OUTAGE COMMENT
CODE 1 2 4 Codes can be added together
DISPLAY FORMAT:
First column: Sequential number of events.
Second column: Elapsed time (the elapsed time format is DAYS, HOURS, MINUTES) 99 days 24 hours 60
minutes max
The third column: Number of cycles.
The fourth column: Code of transient events. There can be more than one transient condition occurring in
one event.
NOTE: In the TRANSIENT CAPTURE mode, the analyzer takes 128 samples of each cycle for each
phase continuously.
NOTE: When the user presses the TRANSIENT button to review the recorded events, the capture
operation is paused until TRANSIENT is pressed again. The timer is also stopped when TRANSIENT
is pressed. Therefore, the time stamp is not correct when the user presses the TRANSIENT button to
resume operation.
NOTE: The analyzer can record up to 28 events. When the analyzer has recorded 28 events, it stops
the capture operation, turns the backlight on, and displays the 28 transient events.
NOTE: The codes can be summed to indicate two or three conditions. For example, if the code is 6,
DIP and OUTAGE (2+4) have been added.
NOTE: The longest duration for a capture operation is 99 days. Use the external 12V DC power
adaptor for long capture operation.