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MX28B-400 +24V Product Manual
990-9218 23
1) Battery Float Voltage - default = -27.00V dc (Check the manufacturer’s
recommendation for the batteries being used in the system.)
2) Battery Maximum Recharge Rate - default = 100A. (Bellcore specifications
recommend a maximum charging rate of capacity (in Ampere-hours) divided by 20
hours; check the manufacturer’s recommendation.)
3) System Voltage - measurement ≅ -27.00V dc (This is a measurement by the system of
the dc output bus voltage.)
4) LVD Option - default = “Enable” (If the MX28B does not have an LVD installed, this
should be changed to “Disable”.)
5) Rectifier Information - Check the rectifier information displays to verify that all
rectifiers installed can be viewed on the control unit display and that no rectifier alarms
are active.
Section 6 provides location information for these parameters and how to make changes if
required.
5.9.3 Full System Power Up
To complete a full system power up, perform the following steps
1) Turn OFF all the circuit breakers that supply ac power to the rectifiers in the MX28B dc
power plant.
2) Turn on the external circuit breaker from the battery to the power plant.
3) Turn on all the circuit breakers that supply ac power to the rectifiers in the MX28B dc
power plant.
4) Load circuit breakers may now be turned on as required.