Sigineer Power MS6048D, Руководство пользователя

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Power On Inverter in AC Bypass Mode Close Open
Inverter in DC to
AC Mode Program 01 set
to Utility
Priority Battery Level < Low Battery
Alarm Open Close
Battery Level > Program 13
(AC to DC Transfer) Close Open
Program 01 set
to SBU or
Solar Priority Battery Level < Program 12
(DC to AC Transfer) Open Close
Battery Level > Program 13
(AC to DC Transfer) Close Open
For low battery alarm, when battery setting is not in “LI” mode, it is 2 volts higher than Low DC Cut-off
Voltage for 48Vdc model and 1 volt higher than Low DC Cut-off Voltage for 24Vdc model.
When the battery setting is in “LI” mode, low battery alarm is 5% higher than Low DC Cut-off Soc.
2.4.11 Automatic Recovery Operation
For the MS6048D, it is designed with automatic recovery from:
⚫
Overloads shutoff
⚫
Over temperature shutoff
⚫
Low battery voltage cutoff.
Pls to “Program 06 Automatic Overload Restart ” “Program 07: Automatic OverTemp Restart
”and “Program 21 Low DC Cut-Off Voltage” for more details.
2.4.12 AC Coupling Operation
The MS6048D inverter can operate in both DC coupled and AC coupled systems.
The ac coupled systems have a higher energy efficiency in comparison to DC coupled systems in that PV
power is converted directly from DC to AC instead of DC to DC to AC.
When it works with grid tie inverters to form an AC coupling off grid system.
It can combine the AC output power with grid tie inverter AC power to power loads.
There are three work modes
1: When grid tie inverter doesn’t work (at night or due to anti-islanding protection), the MS6048D will
output power for the whole system.
2: When the grid tie inverter produces less power than the load wattage, the MS6048D will produce the
power lacked.
3: If the grid tie inverter produces more power than the load wattage, the excessive power will be used for
battery charging. When the charging current is below the preset amperage and/or charging voltage is below
float charging voltage, the MS6048D outputs a nominal of 60Hz power.
When the charging current reaches the preset amperage and/or charging voltage reaches the float charging
voltage, the MS6048D will increase the output frequency gradually until it reaches 63Hz.
When the MS6048D reaches 63Hz, it will cause most grid tie inverters to alarm and shut off, the MS6048D
inverter will solely power the loads.
Note: If the grid tie inverter doesn’t reduce output power as per increased frequency, it will only shut off
abruptly at 60Hz, causing instability of the system.