68 | SAMLEX AMErICA INC.
The battery Charger Section of the EVO
TM
is a powerful, 100 MHz DSP micro-controller based, 3
Stage or a 4 Stage Charger. battery charging parameters are detailed at Table 6.2.
3 Stage Charging Algorithm (Default) is used for normal day to day charging. The 3 stages are
– bulk, Absorption and float. The charging voltages and currents are programmable within the
ranges given in Table 6.2 to take care of a wide range of battery types like flooded, AGM, Gel
Cell, Lead Calcium etc. for details, see Section 5.6 and Charging Curves at fig 6.2.
4 Stage Charging Algorithm is used in the Equalization Mode. Equalization Mode is selected
using optional remote Control EVO-rC (see Appendix A). This mode is used only for flooded
or Wet Cell batteries. The 4 stages will be - bulk, Absorption, Equalization and float. for details,
see Section 6.2 and Charging Curves at fig 5.2. Equalization Mode is desirable for the proper
health of Wet Cell batteries. Equalization voltage is programmable. Equalization current and
Equalization time are computed automatically. Please see Table 6.2 for details.
5.2.1 Dynamic AC input Current Diversion Control between AC Pass through
Current And battery Charging Current
EVO
TM
Models have very powerful battery Charger Section that will require very high AC input
current from the Grid / Generator (See Table 5.1).
tAbLe 5.1 ChArging CurrentS AnD PASS through LoAD CurrentS
rated Charging
Current
Maximum Pass through
Load Power and Current
Max. DC Side
Charging
Current
equivalent AC
Side Charging
Current
Pass through
Power
Pass through
Amps
EVO-3012E
130A
12A
3000 VA
13A
EVO-2212E
100A
9A
2200 VA
10A
EVO-4024E
110A
18A
4000 VA
18A
EVO-2224E
70A
10A
2200VA
10A
When batteries are being charged at or near the maximum value of charging current (See TAbLE
5.1) and the pass through load current increases, the Grid / Generator supply circuit breaker may
trip if the combined value of the AC side charging current (equivalent to the DC side charging
current) and the pass through load current exceeds the Grid / Generator supply circuit breaker
capacity. This situation is prevented by “Dynamic AC Input Current Diversion Control between AC
Pass through Current and battery Charging Current”. This is accomplished through appropriate
setting of programmable parameters “GrID MAX CUrrENT” / “GEN MAX CUrrENT”. Optional
remote Control Model EVO-rC will be required for the desired setting (Please refer to Section 4.5
and TAbLE 4.5 of the attached EVO-rC Owner's Manual at Appendix A).
“GrID MAX CUrrENT” / “GEN MAX CUrrENT” (Default = 16A) should be set equal to the
Ampere rating of the external Grid / Generator supply breakers. During battery Charging Mode,
if the AC pass through load current is increased resulting in the net AC input current increasing
to a value more than the programmed “GrID MAX CUrrENT” / “GEN MAX CUrrENT”, the
eVo
TM
will automatically reduce the charging current to ensure that the equivalent AC
Side Charging C Pass through Load Current is not more than the set value of
“griD MAX /gen MAX Current”.
SECTIOn 5 |
Battery Charging in Evolution
TM
Series