Vertiv | Liebert XDH | User Manual
36
Electrical Installation
If the number of remote temperature sensors are less than 8, configure them in sequence. For example, if there
are three remote temperature sensors, set the address to 1, 2, and 3. Ensure that the addresses are consecutive.
The addresses of the remote temperature sensors must be set at site.
• If the DIP switch is set to ON, this means 1.
• The sensor address cannot be set to 00.
• External general alarm
The external general alarms can be assigned to Terminal 75# and 76#. Further they generate signals to external
alarm devices, such as alarm indicator. When a critical alarm occurs, the contact will be closed to trigger remote
alarms and send signals to the building management system or dial the paging system automatically. The
power supply of the external general alarm system is user-prepared. Refer to
Circuit Diagram for
details definition of other terminals.
4.3.Electrical Installation Inspection
After the electrical installation is completed, confirm the following points as given in
Table 4-4 Electrical Installation Inspection
Items
Results
The power supply voltage meets the rated voltage on the unit name-plate.
The system electrical loop has no open or short circuit.
The power cables and ground cables to the air-breaker switch are connected.
The ratings of the MCBs and fuses are correct (refer
to select
suitable MCB or fuses).
The control cables are well connected.
All the cables connections are fastened, and screws fitted correctly.
Control transformer setting matches the incoming power.
After confirming the above points, you can start the commissioning.
•
Do not power on the unit until Vertiv authorized technical personnel has checked and confirmed all the
parameters of electrical installation in the unit are correct.
