3300/12-02-22-00

3300/12-02-22-00 selects 190–250 Vac input, 0.5 A maximum input current and power input module with internal safety barriers. The AC input is single-phase, 50–60 Hz, with a standard line-noise filter and a power-up surge of 26 A peak or 12 A rms for one cycle. Factory voltage selection can be changed only with the corresponding soldered-jumper and external-fuse configuration.

The supply occupies the leftmost rack position beside the System Monitor and powers up to 12 monitors plus their associated transducers. A jumper on the Power Supply PWA selects -24 Vdc (+0%/-2.5%) or -18 Vdc (+1%/-2%). Overload protection is provided for each individual channel on the monitor circuit boards; the chosen transducer supply must match the installed channels.

A normally energized, hermetically sealed SPDT OK relay is located on the Power Input Module behind the supply. Bently Nevada recommends an external annunciator because loss of primary power, monitor function or critical wiring can compromise machinery protection. Review the 3300 System Monitor, backplane and monitor firmware as a matched arrangement. The 3300/12 is not a direct power-supply replacement for an Original 3300 backplane. Approval option 00 does not specify an agency approval. An internal-barrier Power Input Module alone does not establish approval for the complete installation.