Circutor Q20711, Руководство пользователя

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2.2.- Electrical features
Using the QNA-P/PV as a recording instrument for evaluating electrical power
supply quality means that the analyzer must have a high degree of protection against
severe electrical conditions:
•
High-energy varistors absorbing surges to avoid any costly repairs.
•
Noise filters in voltage and current inputs to ensure reliable measurements even
under the most adverse operation conditions.
•
Power supply: transformers with extra power dissipation and insulation.
•
Built-in battery power supply to ensure voltage supply to the QNA-P/PV analyzer
in the event of voltage loss.
•
Insulation transformers guaranteeing the proper insulation of inputs.