Circutor QNA-P Series Bedienungsanleitung PDF herunterladen (Seite 6)

Page no. 5

The parameters that the QNA-412 can measure are:

Parameter L1 L2 L3

Voltage X X X

Current (2V input) X X X

Frequency X

Active power X X X

Inductive reactive power X X X

Capacitive reactive power X X X

Apparent power X

Active energy X

Inductive reactive energy X

Capacitive active energy X

Power factor X X X

Voltage THD X X X

Current THD X X X

Harmonic Decomposition of voltage X X X

Harmonic Decomposition of current X X X

Voltage wave form X X X

Current wave form X X X

Neutral Current X

Earth neutral Voltage X

Flicker (PST) X X X

Dips X X X

Interruptions X X X

Overvoltage X X X

Unbalance X

Assymetry X

All these parameters are measured and recorded when the installation is

consuming or generating energy.

2.2.- Electrical characteristics.

Due to the fact that the QNA-412 is electrical supply quality recording

equipment, it must have a high degree of protection under severe electrical

conditions:

• High energy varistors for absorbing overvoltages and protecting the

equipment from costly repairs.

• Noise filter on the voltage input: Allows reliable measurements to be

obtained under the most adverse noise conditions.

• Power supply: transformers with higher power dispersal and isolation.

• Power supply from batteries allowing the QNA-412 to operate in the

absence of voltage supply.

• Isolating transformers to ensure input isolation.

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Circutor QNA-P Series Bedienungsanleitung Seite 6