Siemens 7SA511 manual Battery Installation Procedure, Backup Battery Preparation

7SA511 Line Protection Relay Chapter 4

Battery Installation Procedure

When preparing the battery for installation, guard against t short-circuiting the battery leads. Referring to Figure 4-5, prepare the battery as follows:

-Cut both battery leads to a length of 0.6 inches (15 millimeters).

Bead both leads at a right angle to the battery axis so that the ends of the leads are 1.6 inches (40 millimeters) apart.

Remove the basic module from the housing as described in section 4.3.2. The battery and the option jumper are located at the rear edge of the CPU board in the basic module (see Figure 4-6).

Insure that the X50-X51 jumper (located near the battery position as shown in Figure 4-6) is in the X51 position.

Observing correct polarity, insert the leads of the prepared battery into the terminals

￿as shown in Figure 4-6 and tighten the retaining screws.

Reinstall the basic module in the housing as described in section 4.3.2.

0.6 in 0.6 in

+

+

1.6 in

Figure 4-5.Backup Battery Preparation

July 27, 1995 4-9