CHAPTER 5 Cabling the Device
MP-1288 | Hardware Installation Manual
DC Power Supply
The device houses two hot-swappable Power Supply modules, providing 1+1 load-sharing and
power redundancy in case of a Power Supply module failure.
Table 5-6: DC Power Specifications
Physical Specification
Value
Input Ratings
Dual universal power supply 40-60 VDC, 32A max
Connection to DC Mains Supply
Molex terminal block (supplied)
Max. Power Consumption
FXS Interfaces
Short Haul
(W)
Long Haul
(W)
288
450
950
216
400
770
144
350
600
DC Power Safety Notice:
●
Connect the device to a safety extra-low voltage (SELV) source that is sufficiently
isolated from the mains.
●
The device must be permanently connected to earth (ground), as described in
Grounding and Surge Protection
●
Connection of the device to the DC mains power must be done only by a certified
electrician and in accordance with local national electrical regulations.
●
Both Power Supply modules must be connected. Ensure that you connect each
one to a different DC power supply source.
●
The two DC power sources must have the same ground potential.
●
If a failure occurs in any one of the Power Supply modules, replace the module
immediately.
The device is shipped with a DC terminal block plug for each Power Supply module. You need
to connect two 6-AWG power leads (one for positive and one for negative) to this terminal
block.
➢
To connect to a DC power supply:
1.
Disconnect your DC wires from your DC power source.
2.
Using a wire-stripping tool, strip the ends of the two wires (6-AWG) to a length that is
sufficient for inserting into the supplied terminal block. Make sure that you do not strip
too much of the insulation so that wire is not exposed when it exits the terminal block plug
after it has been secured to the terminal block.
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