The Phenix Technologies manufactures coupling capacitors in a wide variety of voltage ratings. Also known as power separation filters, these capacitors are characterized by their low partial discharge specification and low self-inductance design. This makes these capacitors ideally suited for sensitive partial discharge or RIV measurements in a laboratory setting. The generously sized high voltage electrodes ensure corona free operation at full voltage completing a ready to use a coupling capacitor compatible with most partial discharge measurement or RIV instruments.