Manual
Operation Manual for
ZeMa Single Cells
Prepared on: 23-11-2022
Prepared by: GBA
Released on: 04.01.2023
Released by: -
Revised on: -
Index: _-
Distributed to: customer (public)
Pages: 14/35
This document is uncontrolled when printed. For the most current and official copy, check the server.
Rail Engineering
Tel. +49 (0) 2331/372 591
Dieckstrasse 42
Fax +49 (0) 2331/372 804
DE-58089 Hagen
www.enersys.com
7.
Operation
Here you will find important information on the normal and safe operation of the backup
batteries. Batteries have a limited service life and are consumed by the operation. Apply
the information for the charging in order to achieve a long service life.
7.1
Operation modes
The rolling stock battery as backup battery is an important part of the auxiliary power
supply of the coach or a multiple power unit. The battery is usually installed in
standby
operation
and is therefore always connected to the electrical installation.
The battery has a strong influence on the voltage in the DC supply line. As long as the
pantograph is lifted (power supply from the contact line is switched on) the power
converter is working with the charging voltage. It supplies the loads with electricity and
simultaneously charges the battery with a current according to the load parameters and
their state of charge. If the pantograph is lowered, the battery acts as a power source
(discharge) and provides the loads with energy. This reduces the voltage on the DC bar
with the depth of discharge of the battery. To avoid damage to the battery, over the
discharge time the load management will cut off parts of the load and the deep discharge
protection will disconnect the load from the battery when the end of discharge voltage is
reached.
Figure 3 : Operating modes charge-discharge-charge with IU0U charging characteristic