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ANALYZER OF THE QUALITY OF ELECTRIC POWER SUPPLY
QNA-303 --
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13
5.3.- Starting the QNA-303 analyzer up
Before powering the analyzer on please check following points:
1) Supply voltage:
230 V~ +40 % / -40 %, 50... 60 Hz.
400 V~ +40 % / -40 %, 50... 60 Hz.
This choice depends on the position of the inner bridge.
2) Earthing terminal: The earthing terminal of the analyzer must be connected to
earth. The lack of this connection implies the inefficiency of some instrument
protective elements.
3) Maximum voltage in the voltage measuring circuit:
4-wire arrangement 500 V~ line-to-neutral. / 866 V~ line-to-line.
3-wire arrangement: 500 V~ line-to-line.
4) Analyzer burden: 6 VA.
5) Working conditions:
•
Working temperature range: 0 ºC to 50 ºC.
•
Working humidity: 25% to 75 % RH.
6) Safety: Designed to meet protection class III as per EN 61010.
Points to check during the installation process:
7) Verify that the earthing terminal of the
QNA-303
is connected to the earth in
order to avoid possible interferences over the analyzer to occur. If this earthing
terminal is not connected, then the efficiency of the
QNA-303
protection
elements would be reduced.
8) Verify the
QNA-303
setup.
