AC Series Resonant Test System
AC Series Resonant Test System
Applications
Resonant Test Systems is appliedfor the generation ofa continuously variable alternating (AC) voltage of a fixed
frequency (mainly 50 or 60 Hz) for high-voltage (HV)routine, type and development testing of capacitive test
solution of frequency-tuned resonant test systems.
Capacitive test objects are cables, capacitors, gasinsulated switchgear (GIS), but also large rotating
machines, instrument and power transformers (for appliedvoltage tests). Resonant test systems enable not only
HVAC tests at 50/60 Hz, but also at higher or lowerfrequency (10-300 HZ) and dynamic tests with fast
voltage changes (e. g. for capacitors). Because of theirprecise sine-wave, resonant test systems are very well
suited for the combinations of HVAC withstand tests withpartial discharge (PD) measurement.POWERadapts the
resonant test systems to the requirements of the relevantstandards and the demand of the customer.
The main advantageof resonant test systems is the lowpower demand, because only the losses in the test circuit
must be replaced from the power supply. The qualityfactor Q which is the relation between the test power S
and the loss power P ranges between Q = 10 and valuesup to 100, this means only 10 to 1 % of the test power
must be supplied. A resonant test system is remarkablylighter, cheaper and more economic than an AC
transformer test system and should be applied if the testobjects are capacitive. In case of a disruptive discharge
the test object is not destroyed, because the systemsgoes out of resonance. POWER resonant test systems
are characterized by a very modern system configurationand have proven highest reliability.
Tunable inductance reactor modules for series resonantcircuits are available between 250 and 1200 kV and test
power between 1000 and 20000 kVA
Tunable frequency modules for series resonant circuitsare available between 100 and 1600 kV and test power
between 50 and 9000kVA.(Typical Frequency adjustmentbetween 20-300 Hz)
Additional features and accessories:
Resonant circuits with variable frequency
low voltage power filter
Partial discharge (PD) measuring system including blocking impedance)
Compressed gas capacitor
Capacitance and dissipation factor measuring instrument
Moveable design
Made solution upon customer's request
CNME produces several lines of power frequency output HV AC Dielectric Test sets, Transformer Routine Test, HV DC Dielectric Test, etc. These testers perform AC withstand testing to verify the AC voltage integrity of insulation. We can also supply Gas Insulated AC Testing System and High Voltage Impulse Generator, if you want Electrical Equipment Test , you can call us at any time.
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