2.2.4 Installing/Replacing the Power Supply Unit
Function
PSU Type Lower/Upper Input Voltage Range Current Input Frequency
PSU-S
Lower: 100 V AC to 130 V AC 1.4 A
50 Hz or 60 Hz
(for KX-TDA100)
Upper: 200 V AC to 240 V AC 0.8 A
PSU-M
Lower: 100 V AC to 130 V AC 2.5 A
(for KX-TDA100/
KX-TDA200)
Upper: 200 V AC to 240 V AC 1.4 A
PSU-L
Lower: 100 V AC to 130 V AC 5.1 A
(for KX-TDA200)
Upper: 200 V AC to 240 V AC 2.55 A
Accessories and User-supplied Items
Accessories (included): Screws ´ 4
User-supplied (not included): Earthing wire, Back-up Battery Cable (KX-A228 for PSU-S and PSU-M, or
KX-A229 for PSU-L)
Note
• For details about frame earth connection, refer to "2.2.5 Frame Earth Connection".
• For details about backup batteries connection, refer to "2.2.6 Backup Battery Connection".
Safety Instructions
Each 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 the
mains
outlet ground and the PSU case. To ensure the PBX chassis is safely grounded, it is essential that the
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 risk of
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.
46 Installation Manual
2.2.4 Installing/Replacing the Power Supply Unit