Up to now the conducted emissions of photovoltaic inverters at the mains terminals were usually measured using LISN according to CISPR 16-1- 2. The circuit concepts of PV-inverters may cause ripple currents on the DC-side of the inverter, though. These ripple currents, which mostly are in direct proportion to the mains frequency, are passing through the cabling and the PV-generator modules and can be radiated as magnetic fields with sometimes remarkable disturbance effect. Traditional measurements at the PV-inverters’ AC terminals will not be able to reveal such disturbance phenomena.
The PVDC 8301 was especially designed to measure all kinds of disturbance voltages at the DC-side of photovoltaic inverters. These are in detail the disturbance voltage of one conductor above reference ground (unsymmetrical disturbance voltage), the common mode disturbance volage of a pair of conductors above ground (asymmetrical disturbance voltage) and finally, the differential mode voltage between two conductors.
| Frequency Range: | 0.15 MHz – 30 MHz |
| Max. cont. current: | 200 A |
| Max. current (limited time, 15 min): | 250 A |
| Max. Voltage (DC): | 1500 V |
| Common Mode Impedance (Mode switch CM, A or B): | (150 +/- 30) Ω |
| Differential Mode Impedance (Mode switch DM): | (150 +/- 30) Ω |
| Phase at EUT-Terminals: | (0 +/- 40)° |
| Insertion loss (EUT – AE): | >20 dB |
| Longitudinal conversion loss LCL: | >26 dB |
| Voltage Division Factor at the measuring port: | typ. (20 +/- 3) dB (10:1) |
| Resistance (DC) with feed terminals shorted (T=25°C): | <50 mΩ |
| EUT Connectors: | Wing terminals |
| Dimensions(W x H x D): | 448 x 295 x 600 mm |
| Weight: | approx. 30 kg |
