Eaton 91PS User And Installation Manual

Also see for 91PS: User and installation guide Safety and installation quick guide Safety and installation quick guide User and installation guide

• If cables are run in an ambient temperature greater than 30 °C, higher temperature cable and/or largersize cable may be necessary.• The bypass feed into this equipment uses four wires. The rectifier feed into this equipment uses threeor four wires. The phases must be symmetrical about ground (from a Wye source) for properequipment operation.• If the load requires a neutral, a bypass source neutral must be provided. If the load does not require aneutral and there is no neutral conductor connected at the bypass input, a neutral must be installed tosource star point.• A readily accessible disconnect device must be incorporated in all fixed input wiring.WARNINGDo not disconnect the bypass neutral without disconnecting the bypass phasesat the same time.Table 10. Minimum recommended multi-core cable and fuse sizes for rectifier and bypass input and UPSoutput cables (3 phase input, 3 phase output models)UPS rating (kW) 8 10Cable [mm2]* 4x2.5 4x4Rectifier fuse [A] 16 20Bypass fuse [A] 16 20PE cable [mm2] 2.5 4Maximum conductor cross section Solid/stranded wire 16mm2Stranded wire with ferrule: 10 mm2Tightening torque [Nm] 1.6 Nm (L, N)10 Nm for 16–35 mm2 wire (PE)6 Nm for 4–10 mm2 wire (PE)4 Nm for 2.5 mm2 wire (PE)* Minimum recommendedTable 11. Minimum recommended multi-core cable and fuse sizes for rectifier input, bypass input and UPSoutput cables (3 phase input, 1 phase output)UPS rating (kW) 8 10Rectifier input, cable [mm2]* 3x2.5 3x4Rectifier fuse [A] 16 20Rectifier input, PE cable [mm2]* 2.5 4Bypass input and UPS output, cable [mm2]* 10 16Bypass fuse [A] 50 63Bypass input and UPS output, PE cable [mm2] 10 16Maximum conductor cross section Solid/stranded wire 50 mm2EATON 91PS/93PS UPS USER’S AND INSTALLATIONGUIDEP-164000672 - 005 2023 www.eaton.eu 3322