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janitza UMG 509 User Manual

janitza UMG 509
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UMG 509
Transients
Transient voltages are fast impulse transient effects
in electrical networks. The time when transient voltages
occur cannot be predicted and they have a limited
duration.
Transient voltages are caused by lightning strikes,
switching operations or by tripped fuses.
The UMG 509 detects transients that are longer
than 50µs.
The UMG 509 monitors the voltage measurement
inputs for transients.
The transient monitoring can be adjusted for each
phase.
There are two independent criteria by which
transients are detected.
If a transient has been detected, the wave form will
be saved to a transient record.
If a transient has been detected, the threshold
value increases by 20V, both in automatic and
in manual mode. This automatic increase of
the threshold value switches off within 10 minutes.
If a further transient is detected within the next
60 seconds, it will be recorded with 509 points.
The GridVis event browser can display recorded
transients.

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janitza UMG 509 Specifications

General IconGeneral
Brandjanitza
ModelUMG 509
CategoryMeasuring Instruments
LanguageEnglish

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