For such cases, an AC-Diverter like PLPro..A is an efficient protective device, as it withigates the AC current in pipe lines at low impedance (e.g. at 50 Hz few mΩ) to the ground, thus avoiding any unwanted dangerous voltages and protecting the pipe line with the CCP rectifier durably and efficiently.
LEUTRON AC-current diverter PLPro…A can be ordered upon demand for a variety of operating conditions. Basically, it consists of 5 elements:
- AC - current withigation unit, consisting of power-capacitors
(2 pcs. per 40A). - Surge voltage protective device (fine protection) for the
capacitors. - Withigation current measuring unit, 50/100 A AC - current
transformer (display upon request). - 10 kHz low pass filter barrier, prevents discharge of the 10 kHz frequency signal from pipe leakage detectors towards ground.
- Lightning current protection (coarse protection) thanks to
100 kA (10/350 µs) rare gas-filled isolating spark-gaps with low spark-over voltage.
- integrated lightning and surge current protection up to 100 kA (10/350 µs)
- high AC-current discharge capability
- maintenance-free, free from liquid substances
- safety switch for discharging the capacitors before measurements