Set Peak Transients - Dranetz HDPQ Xplorer User Manual

Set Peak Transients

Set Peak Transients

HDPQ Xplorer uses four different algorithms to detect and record transients:
Peak transient
disturbance
• Peak or Instantaneous trigger magnitude
• Waveshape threshold duration (window) and magnitude (tolerance) cycle to cycle
• Waveshape rms deviation cycle to cycle
• High frequency negative/positive peak detectors magnitude
Action...
STEP 1: From the Trigger Limits
Setup Options screen, press Set
Peak Transients.
Instantaneous Peak
• Press the limit field to change
• Check Enable Automatic
Function keys common to all rms
and transient event setup screens:
• Use function key Set ABC the
• Use function key Disable to
• Set to Defaults - restores the
• Set Pre/Post Cycles - defines
• Finish - accepts the changes
• Exit - prompts the Exit Setup
4-28
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limit. Use the keypad to enter
the instantaneous limit. This
value is compared against the
absolute value of each scaled
A/D sample of the V and I
channel waveforms.
Limit Incrementing to set
limit trigger channel settings to
auto-threshold mode.
Same to set identical threshold
values for Channels A, B and C.
deactivate a selected limit field.
Make sure to Enable the field
after.
trigger channel settings to
default values.
the number of rms and
waveform cycles to be saved.
Proceed to Step 2.
made and brings you back to
the limits setup options screen.
screen where you can either
Accept or Abort the monitoring
setups. Go to page 4-48.
DataLoggerStore
www.
Result...
NOTE: Do not set the instantaneous peak limit
value to less than or equal to the peak of the
normal waveform. For a sinusoidal waveform,
the peak is 1.414 x the rms value. Failure to do
this will result in continuous triggering.
HDPQ-416
Continued on next page
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