Coupling capacitor routine test

What is a coupling capacitor (C C)?

A coupling capacitor (C C) is a very common coupling method when performing a PD measurement as described in the IEC 60270 standard. When a partial discharge event occurs, the coupling capacitor provides the devices under test (DUT) with a displacement current, which is measurable at the coupling devices (CPL).

How does a coupling capacitor measure a partial discharge?

When a partial discharge event occurs, the coupling capacitor provides the devices under test (DUT) with a displacement current, which is measurable at the coupling devices (CPL). Such an approach provides additional information about the test discharge (PRPD) measurement. OMICRON ofers standard coupling capacitors from 12 kV up to 100 kV.

How do you measure a coupling capacitor discharge (PRPD)?

discharge (PRPD) measurement. OMICRON ofers standard coupling capacitors from 12 kV up to 100 kV. When using a coupling capacitor without an integrated measuring impedance, the low side of the coupling capacitor has to be connected to the input of the CPL measuring impedance (basic test setup with measurement on ground potential).

How do you test a coupling-capacitor voltage transformer?

Perform power-factor or dissipation-factortests in accordance with test equipment manufacturer’s published data. Verify that the coupling-capacitor voltage transformer circuits are grounded and have only one grounding point in accordance with ANSI/IEEE C57.13.3.

How do you measure a capacitor?

1. Measure resistance from P2 connection to tank, should read less than 1000 ohms. Remove carrier ground connection and close volt tap ground switch. 2. Measure capacitance between CAR connection and basebox. This gives C2 value. 3. Measure capacitance from top of capacitor to basebox. This gives C1 value. Either

How do you lift a capacitor?

The use of rope slings with a chokertype hitch arranged to bear on the upper metal flange is an effective way of lifting the capacitor units. the instructions detailed below. the lower capacitor section. The capacitors are secured tightened to 20 ft. lb. (27 Nm). For easy reference, the during assembling. Fig.2 shows details of the assembly