Samlex Europe PST-300S-12E, Owner'S Manual

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seCtIOn 8 | Installation
!
cAUtion!
1. Please ensure correct polarity of wiring connection. Positive (+) of the external DC
source should be connected to Terminal 3 of the Terminal Block (10, fig 6.1a) and
Negative (-) to Terminal 4. In case the polarity is reversed, the oN/off control will
not operate. the input to these terminals is protected against reverse polarity
2. Use 1A fuse as shown as close to the DC source as possible
i
inFo
The 10-30VDC external control signal on terminals 3 and 4 of the Terminal Block
(10, fig 6.1a) feeds to an internal opto-Isolator. Hence, the Negative Ground of the
external 10-30VDC source can be isolated from the Negative Ground of the Battery
input to the inverter.
The inverter will switch oN when the external relay contact / switch is closed [External DC
voltage (10-33VDC) is fed to terminals 3 and 4 of the Terminal Block (10, fig 6.1a)]. The
inverter will switch off when the external relay contact / switch is opened [External DC volt-
age (10-33VDC) is removed from terminals 3 and 4 of the Terminal Block (10, fig 6.1a)].
• 1-Wire on/oFF control Using Switched Dc Voltage from the Battery Supplying the
inverter, Fig 8.2(c) :
!
cAUtion!
1. Please ensure correct polarity of wiring connection. Positive (+) of the battery
voltage should be connected to Terminal 3. In case the polarity is reversed, the
oN/off control will NoT operate. The input to this terminal is protected against
reverse polarity
2. Use 1A fuse as shown as close to the battery input point as possible
The inverter will switch oN when the external relay contact / switch is closed [Voltage from
the 12V / 24V battery supplying the inverter is fed to terminal 3 of the Terminal Block (10,
fig 6.1a)]. The inverter will switch off when the external relay contact / switch is opened
[Voltage from the 12V / 24V battery supplying the inverter DC voltage is removed from
terminal 3 of Terminal Block (10, fig 6.1a)]. in a vehicle / RV, the control voltage may be fed
directly from the ignition Switch. this will switch on the inverter when the ignition is on
and switch oFF the inverter when the ignition is switched oFF.
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a) When NOT using external 1-Wire or 2-Wire ON/OFF Control: By switching OFF
the 3-Position Rocker Switch (1, ig 6.1a) tfo center position marked “O
N ” / “OFF”
b) When using external 1-Wire or 2-Wire ON/OFF Control: By Switching OFF the
inverter by (i) opening the switch or the relay contact in 2-Wire ON/OFF Control
(fig 8.2a) or (ii) opening the switch or relay contact in 2-Wire ON/OFF Control using
switched DC voltage (fig 8.2b) or (iii) opening the switch or relay contact in 1-Wire
ON / OFF Control using switched DC voltage from the battery supplying the
inverter.
SECTION 10 | Protections
10. PROTECTIONS
The inverter has been provided with protections detailed below:
10.1 POWER SURGE / OVERLOAD / SHORT CIRCUIT SHUT DOWN
i
INFO
Please refer to 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:
• Active Power (Watts) = Apparent Power (VA) x Power Factor (PF).
• For resistive type of loads, the Power Factor = 1 and hence, Apparent
Power (VA) = Active Power (Watts, W)
• For 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 200%
of the rated value, output current limiting is carried out instantly resulting in drop in
the AC output voltage (the drop is proportional to the load impedance). Surge Power of
200% will, thus, be provided for < 8 ms every half cycle. If this situation continues for 2
to 2.5 sec Overload Condition is activated.
OVERLOAD CONDITION: If there is a continuous overload of 110% to 115% for 2 to 3
sec, the output voltage will be shut down. Red LED marked “OVERLOAD” (3, f ig 6.1a)
will turn ON, the Green indication light on the GfCI outlet will be OFF and buzzer alarm
will sound. The Green LED marked “POWER” (2, Fig 6.1a) will continue to be lighted.
The unit will be latched in this shut down condition and will require manual reset.
SECTION 9 | Operation
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