Section 10 Protections - Samlex Europe PST-300S-12E Manual Del Propietário

SECTION 9 | seCtIOn 8 |
a) When NOT using external 1-Wire or 2-Wire ON/OFF Control: By switching OFF
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the 3-Position Rocker Switch (1, ig 6.1a) tf o center position marked "ON" / "OFF"
cAUtion!
b) When using external 1-Wire or 2-Wire ON/OFF Control: By Switching OFF the
1. P lease ensure correct polarity of wiring connection. Positive (+) of the external DC
inverter by (i) opening the switch or the relay contact in 2-Wire ON/OFF Control
source should be connected to Terminal 3 of the Terminal Block (10, fig 6.1a) and
(fig 8.2a) or (ii) opening the switch or relay contact in 2-Wire ON/OFF Control using
Negative (-) to Terminal 4. In case the polarity is reversed, the oN/off control will
switched DC voltage (fig 8.2b) or (iii) opening the switch or relay contact in 1-Wire
not operate. the input to these terminals is protected against reverse polarity
ON/OFF Control using switched DC voltage from the battery supplying the
inverter.
2. Use 1A fuse as shown as close to the DC source as possible
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SECTION 10 |
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
10. PROTECTIONS
external 10-30VDC source can be isolated from the Negative Ground of the Battery
input to the inverter.
The inverter has been provided with protections detailed below:
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
10.1 POWER SURGE / OVERLOAD / SHORT CIRCUIT SHUT DOWN
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)].
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• 1-Wire on/oFF control Using Switched Dc Voltage from the Battery Supplying the
INFO
inverter, Fig 8.2(c) :
Please refer to
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Power Factor (PF) at Section 2.1. In the explanation below, the values of Power
cAUtion!
are expressed in Apparent Power in VA. Corresponding Active Power (Watts, W)
1. P lease ensure correct polarity of wiring connection. Positive (+) of the battery
will depend upon the type of load (Resistive or Reactive) and its Power Factor
voltage should be connected to Terminal 3. In case the polarity is reversed, the
(Power Factor may range from 1 to 0.5). Please note the following:
oN/off control will NoT operate. The input to this terminal is protected against
• Active Power (Watts) = Apparent Power (VA) x Power Factor (PF).
reverse polarity
• For resistive type of loads, the Power Factor = 1 and hence, Apparent
2. Use 1A fuse as shown as close to the battery input point as possible
Power (VA) = Active Power (Watts, W)
• For reactive types of loads, the Power Factor will be < 1 (up to 0.5) and hence,
The inverter will switch oN when the external relay contact / switch is closed [Voltage from
the Active Power (Watts, W) will be less than the Apparent Power (VA)
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
The AC output voltage will shut down due to overload and short circuit conditions as follows:
[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
POWER SURGE CONDITION: When the AC output current tries to exceed around 200%
directly from the ignition Switch. this will switch on the inverter when the ignition is on
of the rated value, output current limiting is carried out instantly resulting in drop in
and switch oFF the inverter when the ignition is switched oFF.
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,
will turn ON, the Green indication light on the Gf CI 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.
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Operation Installation
Protections
of Active Power (Watts), Apparent Power (VA) and
ig 6.1a)
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