ABB SACE Tmax XT2 - 30 - Network Analyzer

1SDH002031A1002 ECN000092998 Rev. B SACE Tmax XT2 – XT4 | 106
30 - Network Analyzer
Presentation
The Network Analyzer function allows setting voltage and current checks for a long time, to
analyze the system's operation.
For this purpose, voltages and currents are monitored to detect:
 Voltage sequences (Over, Under, Pos and neg)
 Voltage imbalance (Unbalanced)
 Voltage drops, of a short duration (Interruptions) and slow (Sag)
 Voltage increases, of a short duration (Spike) and slow (Swell)
 Harmonic distortion of voltages and currents (THD)
Each monitor is associated with control parameters that can be set by the user and to counters
that are incremented each time the control condition settings are reached.
Parameters
The counter configuration parameters are available in the Settings - Network Analyzer menu
(page 29).
In the Settings menu it is also possible to set the Measurement interval parameter, which defines
the period of each control session.
NOTE: the parameter is the same used for current measurements and maximum
voltages
Main Menu
Parameter
Description
Default
Enable
Enable/disable the function and the availability of the parameters in
the menu
OFF
I Harmonic Analysis
Activates the harmonic analysis of the currents
OFF
V Harmonic Analysis
Activates the harmonic analysis of the voltages
OFF
V Low Threshold
Counter control threshold Under V Th
The value is expressed as a percentage of the rated voltage Un,
which can be set in a range of: 75% .. 95% Un, with 5% steps
85 % Un
V High Threshold
Counter control threshold Over V Th
The value is expressed as a percentage of the rated voltage Un,
which can be set in a range between: 105, 110, 115% Un
110 % Un
Imbalance V Th
Counter control threshold Unbalanced.
The value is expressed as a percentage of the rated voltage Un,
which can be set in a range of: 2% .. 10% Un, with 1% steps
NOTE: 0% = symmetrical and balanced system
3 % Un
V Interruption Th
Counter control threshold V interruption.
The value is expressed as a percentage of the rated voltage Un,
which can be set in a range of: 10% .. 95% Un, with 5% steps
95 % Un
V Spike Threshold
Counter control threshold Spikes.
The value is expressed as a percentage of Un, which can be set in
a range of: 105% .. 125% Un, with 5% steps
105 % Un
Sags
Menu with the control parameters for voltage sags
Surges
Menu with the control parameters for voltage surges
Harmonics
Available by enabling the harmonic analysis of currents and/or
voltages, the menu allows configuring the harmonic control
parameters