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: 9/35
This document is uncontrolled when printed. For the most current and official copy, check the server.
Rail Engineering
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Fax +49 (0) 2331/372 804
DE-58089 Hagen
www.enersys.com
3.3
Charge and Discharge Parameters
ZeMa
Rail
Single Cells ZeMaXXPxx
U
N
:
2 V
Nominal voltage
C
10
:
XX Ah
Rated capacity to 1.8 V at 20°C
until 1.8 V
I
10
:
XX
/10 A
Discharge current for C
10
I
Load
:
acc.
Load profile
A
Discharge current acc. Customer load profile
U
final
:
1.8 V
End of charge voltage at I
10
(until 1.8 V)
I
Charge max
: 0.45*
XX
A
Charge current for IU or IU0U-charging (minimum for cyclic use: 0.25*XXA)
U
Boost
:
2.4 V
Boost level voltage setting at 20°C (2.40 V)
U
Rail
:
2.3 V
Lower level or constant voltage setting for rail applications at 20°C,
2.30 … 2.35 V (low … high cyclic use)
to
2.35 V ± 1%
I
switch
: 0.012*
XX
A
U
float
:
2.29 V ± 1%
Float level voltage at 20°C, 2.29 V (> 24h)
Manual temperature compensation of the charge voltage:
-4 mV/°C
Electrolyte – temperature between -20°C till +45°C (-4 mV/per cell)
3.4
Operating modes and special operating modes
Further information about these modes can also be found in chapter 7.1 “Operation
3.4.1 Standby (parallel) operation (charge)
As long as the power supply is ensured via the main power supply, the backup battery is
continuously charged. The charging current will be determined by the charging status of
the battery. With continuous charging the current drops to very small values to maintain
the battery fully charged.
3.4.2 Battery operation (discharge)
When the power supply is switched off or fails, the supply to DC loads will come from the
battery. The backup time will depends current demand from the DC loads.
To avoid damaging deep discharge, the loads must be separated before reaching the
final discharge voltage of the battery.
3.4.3 Storage and workshop operation (recharge, capacity testing, etc.)
During storage or service, the battery can be disconnected from charging and any loads,
the battery will show its open-circuit voltage on its terminals.
The state of charge is also to be monitored during the storage of the battery. Possibly you
might hold it at full charge by a workshop charger operating with float voltage.