À propos du produit
- Mesure de DP UHF en parallèle sur tous les canaux
- Lecture en parallèle des valeurs de crête de DP, amplitudes d'oscilloscope de DP et patrons de DP
- Canal d'entrée à suppression du bruit séparé
- Algorithme de détection automatique des alarmes
- Redondance du système
- Compatible avec capteurs UHF existants, intégrés ou externes
- Configuration évolutive du système
- Mode de suppression automatique du bruit
- Communication en réseau
Le GISmonitor Portable est disponible dans différents boîtiers :
- boîtier de bureau léger et portable 1/2 19″
- boîtier de bureau léger et portable 19″
- boîtier extérieur étanche et résistant aux chocs
- mini boîte en aluminium noire
Le GISMonitor Portable est la version portable du GISmonitor pour la surveillance temporaire de l’activité de décharge partielle des appareillages de connexion à isolation gazeuse. Pour garantir des résultats fiables et précis du système dans des conditions environnementales ou météorologiques difficiles, le boîtier de protection ICMoutlander est l’accessoire complémentaire idéal.
Dépannage
The power fuse might be blown. Unplug the unit and check the power supply fuse. This fuse is located on the rear panel of the GISmonitor (desktop version) or in the upper left corner (Explorer case version) above the on/off switch.
Check the device settings in the software. The connection type must be set to “USB”.
Check the device settings in the software. The connection type must be set to “LAN”, and the correct IP address of the connected instrument must be provided.
Check if, the IP address of your PC is set to the same IP range as the one on your instrument.
A flashing orange frame indicates a lost connection between the GISmonitor and a frequency converter unit (FCU). Please check the connection cable and make sure the FCU is working correctly.
There is no signal visible on one or more of the channels
Check the range and the low level discriminator (LLD) settings in the software.
Try to adjust the corresponding alert threshold. If this does not lead to any improvement, check if disturbances or background noise are hampering the partial discharge measurement leading to false alarms. If so, try to adjust the low level discriminator (LLD) or use a gating antenna and the GISmonitor’s gating function to blend out the unwanted signals.
Interprétation des résultats de test
The evaluation of a PRPD pattern enables you to determine the kind of fault within the test object. Most partial discharge faults, such as insulation damages, voids, surface discharges, or floating points, will have completely different partial discharge patterns.
These are the typical criteria for classifying these patterns:
- Phase position of the maximum partial discharge
- Phase position of the starting electron
- The gradient of discharges
- The shape of discharges in the positive and negative half-cycle
- The absolute value of discharge in pC or nC
- Short-time or continuous discharges
For successful interpretation, it is also necessary to get as much information as possible about the test object and its environment. Such information can be, for example, temperature, installation condition, age of the test object, previous faults, or weather conditions. It is useful to store typical PD patterns of known faults in an archive, which can be done by using the software for the GISmonitor Portable. This customer-specific database will be helpful for later evaluation on other test objects.
