| Function | Rang? of values |
| Output frequency | 0 Hz ... 999 Hz |
| Frequency resolution | 0.1 Hz |
| Max. motor lead at the output | approx. I50m without additional output choke, if standard cabie is used |
| Coolant temperaturę | 0°C ... 40°C, air not containing any moisture or aggressive gases |
| Storage temperaturę | -20°C ... 70°C, in air free of moisture or aggressive gases |
| Air humidity | 90% rei., no condensation |
| installation altitude | up to i.OOOrn a.m.s.l. without loss of performance |
| Type of enclosure | IP 20 (altematjvely: NEMA 1as an option) |
| Electrical protection | earth-fault- and short-circuit-proof, stable at no load, protected in case of mains phase failure |
| immunity to interference | IEC 801-21-4, severity level 4 |
| R.I. suppression degree | in acc. with EN 55011, with optional mains filter and properly connected |
| Approvals | UL and CSA for SK 1500/3 CT... SK 11000/3 CT |