American Power Conversion MX28B4800, MX28B2400 manual DC System Grounding, Battery Probe Connection

Battery Temperature Probe Installation

The optional temperature probe is used to monitor the battery string temperature. To get the most representative temperature measurement, the probe should be placed in contact with a battery cell that is centrally located. The probe should be placed directly in contact with the cell (not the frame surrounding the cell). Generally, the cell cover can be used; be careful not to allow the probe body to touch the terminals. Remove the adhesive protection strip from the probe body and press the adhesive side of the probe on the battery cell cover. See Figure 3.4-3 for details. Plug the connector end of the temperature probe into J5 of the control unit backplane card. Route the cable as required positioning the probe on the selected battery cell. See Figure 3.4-2 for Details.

Figure 3.4-2 Battery Probe Connection Figure 3.4-3 Battery Probe Installation

3.5. DC System Grounding

The Positive Battery connection (return bus) for the power plant must be connected to the Master Station Ground. The return bus provides 3/8” holes on 1 inch or 1-3/4 inch centers for connection of a two-hole lugged cable to the Central Office Ground. Details for this connection should be provided in the site electrical grounding plans.

A connection to tie the frames together is also available. frame is a pair of studs for connecting a grounding cable. each expansion frame.

At the top of both sides of the box This #6 AWG cable is provided with

MX28B1200/2400 MX28B1200/4800 –48 VDC User’s Manual Page 13