3.2 Installation of the PBX54 Installation Manual3.2.4 Installing/Replacing the Power Supply UnitFunctionAccessories 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)Notes• 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, and AS/NZS60950; therefore a protective earth connection exists between themains outlet ground and the PSU case. To ensure the PBX chassis is safely grounded, it is essential thatthe PSU case be securely fastened to the 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 riskof fire, 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.PSU Type Lower/Upper Input Voltage Range Current Input FrequencyPSU-S(for KX-TDE100)Lower: 100 V AC to 130 V AC 1.4 A50 Hz or 60 HzUpper: 200 V AC to 240 V AC 0.8 APSU-M(for KX-TDE100/KX-TDE200)Lower: 100 V AC to 130 V AC 2.5 AUpper: 200 V AC to 240 V AC 1.4 APSU-L(for KX-TDE200)Lower: 100 V AC to 130 V AC 5.1 AUpper: 200 V AC to 240 V AC 2.55 AAC InletPower SwitchAC InletPower SwitchPSU-S PSU-M/PSU-LBattery SwitchEarth TerminalBattery SwitchEarth TerminalBattery ConnectorBattery Connector
