ABB SACE Tmax XT5, Руководство по эксплуатации и обслуживанию

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ABB | SACE Tmax XT
Measurements | 5 - Network Analyzer 107 | © 2019 ABB | 1SDH002039A1002 - ECN000093027 - Rev. A
5 - Network Analyzer
Presentation
The Network Analyzer function allows you to set voltage and current controls over a long period, in order to
analyze your system.
To this purpose, voltages and currents are monitored, so as to find:
• voltage sequences (Over, Under, Pos and neg)
• unbalance between voltages (Unbalance)
• short voltage drops (Interruption) and slow sags (Sag)
• short voltage increases (Spikes) and slow swells (Swell)
• harmonic distortion of voltages and currents (THD)
Each monitoring is associated with control parameters set by the user and updated each time the set control
conditions occur.
Parameters
The configuration parameters of the counters are available in the
Settings
-
Network Analyzer
menu (page 33).
The Monitor time parameter, which defines the length of each monitoring session, can also be set in the
Settings
menu.
NOTE: the parameter is the one used for measuring the maximum currents and voltages
Main Menu
Parameter Description Default
Enable
Activates/deactivates the function and its availability in the parameters
menu
Off
I Harmonic
Analysis
Activates harmonic analysis of the currents Off
V Harmonic
Analysis
Activates harmonic analysis of the voltages Off
V Threshold Low
Control threshold of the Under V Th counter
The value is given as a percentage of rated voltage Un and can be set
within the range: 75% to 95%, in 5% steps. 85 % Un
V Threshold
High
Control threshold of the Over V Th counter
The value is given as a percentage of rated voltage Un and can be set
within the range: 105, 110, 115 % Un 110 % Un
Unbalance V Th
Alarm threshold for the Unbalance counter.
The value is given as a percentage of rated voltage Un and can be set
within the range: 2% to 10% Un, in 1% steps.
NOTE : 0% =symmetrical and balanced system
3 % Un
V microinterr. Th
Control threshold of the V microinterr counter.
The value is given as a percentage of rated voltage Un and can be set
within the range: 10% to 95% Un, in 5% steps 95 % Un
V Spike
Threshold
Control threshold of the Spike counter.
The value is given as a percentage of Un and can be set within the
range: 105% to 125% Un, in 5% steps 105 % Un
Sags Menu with the control parameters of the voltage sags
Swells Menu with the control parameters of the voltage swells
Harmonics
The submenu, which becomes available by enabling the harmonic
current and/or voltage analysis, allows the harmonic control
parameters to be configured
Continued on the next page