8
In case of heavy load operation period can be noticeably less than the estimated
one.
If motor (or generator) is started up, and if power of generator is equal to
power of load or more than it, operation period of power consumers is not
limited. Automotive alternator reaches its nominal power output at its
corresponding turnovers (usually 200 turnovers/ min)
If power consumers include inductance load on basis of induction motors
(refrigerator, air conditioner, pump), for example:
refrig TV +
lightening,
then total power of this load is not to exceed half max power of
inverter.
Example: for synchronous connection of refrigerator (100W) + TV (90W) +
lightening (400W) + pump (400W) = 990W, you should need inverter with
2000 W power (min).
Remember that batteries have such a characteristic as residual capacitance. For
example, if you mowed loan by 1 kilowatt loan-mower during 45 min, using
90Ah battery, and after that your inverter turned off – reduce load to 500W (for
example, attach a fret-saw) and go on working. After that it is possible to
connect 300 W devices, then 130 W, 60W, 30W and so on. 100% consumption
of battery’s energy is not recommended, as in this case operation life of
accumulator reduces.
If total consumption power of attached units is more than nominal power of
inverter or inverter’s temperature has reached its max permissible value, than
overheat protection will snap into action and inverter will turn on. Otherwise, if
input voltage is below the line, inverter will also turn off. In this case disconnect
a device and start an engine for accumulator recharging. In some models are
provided with indicator lamps and bleep (see
Table 1
).
