MI 2893 / MI 2892 / MI 2885 Transient recorder
88
Envelope
Previous
cycle
Current
cycle
Trigger
Envelope
Level: Trigger will occur if any sample within period is greater than
defined absolute trigger level. Level is defined as absolute expected
monitoring value. See 5.1.20 for details.
Trigger level
Trigger level
Phase voltage limits:
Minimum value: U
nom
Maximum value: 5500 * VT ratio
Neutral voltage limits:
Minimum value: 0,0055 * U
nom
* sqrt(2)
Maximum value: 1 V
Phase/Neutral current limits:
Minimum value: 0.1 * sqrt(2) * I
nom
Maximum value: 1.5 * sqrt(2) * I
nom
PHASE:
U: Trigger on transients at active voltage (phase/line) channels
I: Trigger on transients at active phase current channels
NEUTRAL:
Un: Trigger on transients at Ground to Neutral voltage channel
In: Trigger on transients at Neutral current channel
Note:
Minimum current trigger selection: 10% *I
nom
* sqrt (2)
Maximum current trigger selection: 150%* I
nom
* sqrt (2)
Store mode setup:
Single – transient recording ends after first trigger
Continuous (Max. 1500 rec.) – consecutive transient
recording until user stops the measurement or instrument
runs out of storage memory. Every consecutive transient
recording will be treated as a separate record.
By default, 200 records can be recorded. This value can be
changed, if necessary. More than 200 records can slow
down the instrument.
1, 2, 5, 10, 20, 50 periods (number of capturing periods)
0, 1, 2, 5, 10, 20 periods (number of capturing periods before
trigger)
Table 67: Keys in Transient recorder setup screen
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