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: 16/35
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
Parameter
ZeMa200P18*
at
20
°C
Cell 2V
Battery 24V
72V
108V
Max. charging current*
80 A
Boost level voltage U
Boost
2.40 V
28.80 V
86.4 V
129.6 V
Lower level voltage U
Rail
2.30 V
27.6 V
82.8 V
124.2 V
Temperature compensation
-4 mV/°C
-48 mV/°C -144 mV/°C -216 mV/°C
* Charging current relates to cell capacity, for other cells refer to data sheet
The switching between the charging voltages for boost level charging U
Boost
and for
(lower) constant voltage charging U
Rail
is carried out according to the following criteria:
Downshift from U
Boost
to U
Rail
:
When charging current falls under 3A (± 1A)
Upshift from U
Rail
to U
Boost
If charging current increases over 5A (± 1A)
For temporal limitation of the boost charging, a maximum boost charging time of 12 hours
must be implemented beside the charging current, as switching criteria. Charging
interruptions shorter than 2 minutes should not restart this time.
When switching to (lower) constant voltage charging U
Rail
the voltage should be reduced
with a ramp, so that a charging current greater 0A remains.
When the operating of your train loads the battery with daily discharges >5% DOD adjust
the lower charging voltage of your system.
7.2.3 Temperature compensation of the charging voltage
The operating and ambient temperature affects the battery life. It is therefore
recommended that the charger detects the battery temperature with a sensor and
compensates the charging curve as specified in section 3.1.1 “Common Technical Data
of the rolling stock single cells
”.
If continuous charging voltage U
Rail
operates without temperature
compensation and the
ambient temperature of your battery
installation should permanently be outside the range of 18 °C to
25 °C
, correct the charging voltage U
Rail
according the following chart
manually: