Samlexpower Pure Sine Wave PST-1500-12 Manuel Du Propriétaire page 41

Section 9 |
9.5 NO LOAD DRAW (IDLE CURRENT)
When the ON/Off Switch (1, Fig 6.1) is turned ON, all the circuitry inside the inverter
becomes alive and the AC output is made available. In this condition, even when no
load is being supplied (or, if a load is connected but has been switched Off), the inverter
draws a small amount of current from the batteries to keep the circuitry alive and ready
to deliver the required power on demand. This is called the "Idle Current" or the "No
Load Draw". Hence, when the load is not required to be operated, turn Off the ON/Off
switch (1, Fig 6.1) on the inverter to prevent unnecessary current drain from the battery.
i
INFO
When the inverter is turned Off using the optional Remote Control RC-200,
some control circuitry in the inverter is still alive and will draw very low current.
Therefore, to prevent any drain from the battery, switch Off the inverter from
the ON/OFF switch (1, Fig 6.1) provided on the front panel of the inverter.
Section 10 |
10. PROTECTIONS
The inverter has been provided with protections detailed below:
10.1 POWER SURGE / OVERLOAD / SHORT CIRCUIT SHUT DOWN
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INFO
Please refer to definitions of Active Power (Watts), Apparent Power (VA) and
Power Factor (PF) at Section 2.1. In the explanation below, the values of Power
are expressed in Apparent Power in VA. Corresponding Active Power (Watts, W)
will depend upon the type of load (Resistive or Reactive) and its Power factor
(Power factor may range from 1 to 0.5). Please note the following:
• A ctive Power (Watts) = Apparent Power (VA) x Power Factor (PF).
• F or resistive type of loads, the Power Factor = 1 and hence, Apparent Power
(VA) = Active Power (Watts, W)
• F or reactive types of loads, the Power Factor will be < 1 (up to 0.5) and hence,
the Active Power (Watts, W) will be less than the Apparent Power (VA)
The AC output voltage will shut down due to overload and short circuit conditions as follows:
Power Surge Condition: When the AC output current tries to exceed around 175% of
the rated output current for PST-2000 or, 200% of the rated output current for PST-1500,
output current limiting is carried out instantly resulting in drop in the AC output voltage
operation
Protections
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