3.2.4 Installing/Replacing the Power Supply UnitFunctionPSU Type Lower/Upper Input Voltage Range Current Input FrequencyPSU-S Lower: 100 V AC to 130 V AC 1.4 A50 Hz or 60 Hz(for KX-TDE100) Upper: 200 V AC to 240 V AC 0.8 APSU-M Lower: 100 V AC to 130 V AC 2.5 A(for KX-TDE100/KX-TDE200)Upper: 200 V AC to 240 V AC 1.4 APSU-L Lower: 100 V AC to 130 V AC 5.1 A(for KX-TDE200) Upper: 200 V AC to 240 V AC 2.55 AAC InletPower SwitchAC InletPower SwitchPSU-S PSU-M/PSU-LBattery SwitchEarth TerminalBattery SwitchEarth TerminalBattery ConnectorBattery ConnectorAccessories and User-supplied ItemsAccessories (included): Screws ´ 4User-supplied (not included): Earthing wire, Back-up Battery Cable (KX-A228 for PSU-S and PSU-M, orKX-A229 for PSU-L)Note• For details about frame earth connection, refer to "3.2.5 Frame Earth Connection".• For details about backup batteries connection, refer to "3.2.6 Backup Battery Connection".Safety InstructionsEach PSU complies with Safety Class 1 of IEC60950, EN60950, UL60950, CAN/CSA-C22.2 No.60950, andAS/NZS60950; therefore a protective earth connection exists between the mains outlet ground and the PSUcase. To ensure the PBX chassis is safely grounded, it is essential that the PSU case be securely fastened tothe PBX chassis with the 4 screws provided with each PSU.When installing or replacing a PSU, basic safety precautions should always be followed to reduce the risk offire, electric shock and injury to persons, including the following:1. Never install or replace a PSU during a lightning storm.2. Never install or replace a PSU in wet locations.56 Installation Manual3.2.4 Installing/Replacing the Power Supply Unit
