DC to AC Power inverter manual MODEL: H T-S-300 Pure sine wave output (<2% THD). Input & Output fully isolation design. High Efficiency 87% ~ 90%. High surge in motor start capacity. 5-stage thermal control fan. Frequency 50/60HZ switchable. Auto restart. Small size. Firstly, thank you...
DC to AC Power inverter manual
MODEL: H T-S-300
Pure sine wave output (<2% THD).
Input & Output fully isolation design.
High Efficiency 87% ~ 90%.
High surge in motor start capacity.
5-stage thermal control fan.
Frequency 50/60HZ switchable.
Firstly, thank you for purchase our product.Please read this manual carefully before installing or using this product.
This model is used in a wide range of application including remote homes, RVs, sailboats and powerboats.
It will operate most televisions and VCR, personal computers, small appliances and tools such as drills, sanders, grinders, mixers and blenders.To get the most out of the power inverter, it must be installed and used properly. Please read the instructions in this manual before installing and using this model.
Quick hook - up and testing
If you would like to quick hook-up the power inverter and check its performance before going ahead with your installation, please follow these guidelines:
1. Unpack and inspect the power inverter, check to see that the power switch is in the OFF position.
2. Connect the cables to the power input terminals on the rear panel of power inverter. The red terminal is positive (+) and black terminal is negative (-). Connect the cables into the terminals and tighten the wing nut to clamp the wires securely.
3. Connect the cable from the negative terminal of the inverter to the negative terminal of the power source. Make a secure connection.
Loosely tightened connectors result in excessive drop and may cause overheated wires and melted insulation.
4. Before proceed further, carefully check that cable you have just connected connects from the negative terminal of inverter to the negative output terminal of the power source.
Reverse polarity connection will blow a fuse in inverter and may permanently damage the inverter. Damage caused by reverse polarity connection is not covered by our warranty.
5. Connect the cable from the positive terminal of inverter to the positive terminal of the power source. Make secure connection.
You may observe a spark when you make this connection since current may flow to charge capacitors in the power inverter. Do not make this connection in the presence of flammable fumes, explosions or fire may result.
6. Set the power switch to the ON position. Check the meters and indicators on the front panel of the inverter.
If does not, check your power source and the connections to inverter. The other indicators should be off.
7. Set power inverter switch to the OFF position, the indicator lights may blink. Plug the test load into the AC receptacle on the front panel of the inverter. Please keep switch in off position.
8. Set power inverter switch to the ON position, the inverter should supply power to the load.
1. Where to install
The power inverter should be installed in a location that meets the following requirements:
a. Dry - Do not allow water to drip or splash on the inverter.
b. Cool - Ambient air temperature should be between 0℃ and 40℃, the cooler the better.
c. Ventilated - Allow at least one inch of clearance around the inverter for airflow. Ensure the ventilation openings on the rear and bottom of the unit are not obstructed.
d. Safe - Do not install the inverter in the same compartment as batteries or in any compartment capable of storing flammable liquids such as gasoline.
DC to AC inverters require high amperage/low voltage DC power to low amperage/high voltage AC power. To operate properly connect inverter DC input terminals direct to battery with heaviest wire available see chart below:
Max Watts Out
#6 or 2×#10
The power inverter has a lug on the rear panel chassis ground. This is to connect the chassis of the power inverter to the ground. The ground terminals in the AC outlets on the front panel of the inverter are also connected to the ground lug.The chassis ground lug must be connected to a grounding point, which will vary
depending on where the power inverter is installed. In a vehicle, connect the chassis ground to the chassis of the vehicle.
In a boat, connect to the boat's grounding systems. In a fixed location, connect the chassis ground lug to earth.
The neutral (common) conductor of the power inverter AC output circuit is connected to the chassis ground. Therefore, when the chassis is connected to ground, the neutral conductor will also be grounded .This conforms to national electrical code requirements that separately derived AC sources (such as inverters and generators) have their neutral tied to ground in the same way that the neutral conductor from the utility line is tied to ground at AC breaker panel.
The negative DC input of the power inverter is connected to the capacitance, then to the ground a positive ground DC system.
A positive ground DC system has the positive terminal of the battery connected to the chassis of the vehicle or to the grounding point.
Do not operate the power inverter without connecting it to ground. Electrical shock hazard may result.
To operate the power inverter, turn it on using the ON/OFF switch on the front panel. The power inverter is now ready to deliver AC power to your loads. If you are operating several loads from the power inverter, turn them on separately after the inverter has been turned on. This will ensure that the power inverter does not have to deliver the starting currents for all the loads at once.
Controls and indicators
The ON/OFF switch turns the control circuit in the power inverter on and off. It does not disconnect power from the power inverter.
1.Overload / Auto re-start
The inverter would operate most AC loads within its power rating. If the load is over the specification, HT-S-300 will auto re-start 5 times, if not success, the inverter will shut down automatically.
The buzz will be noisy if the temperature is
Television interference :
too high, then the inverter will be shut down
Operation of the power inverter can
automatically. Please re-set it after the
interfere with television reception on
inverter got cooling.
some channels. If this situation occurs,
Note1: The speed of fan operation will
the following steps may help to
change 5-stage to follow the inverter
alleviate the problem.
-Make sure that the chassis ground
lug on the back of the power inverter is
solidly connected to the ground system
of your vehicle, boat or home.
The power inverter will operate from input
-Do not operate high power loads with
voltage range 10V-15 (12V) or 20V - 30V
the power inverter while watching
(24V). If the voltage drops too low(※1) or
raise too high(※2),the inverter will shut
-Make sure that the antenna feeding
down automatically. Before shut down, buzz
your television provides an adequate
noise will warn you.
(snow free) signal and that you are
using good quality cable between the
antenna and the television.
※1:<10.3V(12V spec) or <20.6V(24V spec)
-Move the television as far away from
the power inverter as possible.
※2:<15V(12V spec) or <30V(24V spec)
-Keep the cables between the battery
and the power inverter as short as
possible and twist them together with
about 2 to 3 twists per foot. This
Adjust 50/60 HZ through the switchable
minimizes radiated interference from
button.Buzz noise will remind you:
Very little maintenance is required to
keep your inverter operating properly.
Please turn on the inverter again when
You should clean the exterior of the
you change frequency.
unit periodically with a damp cloth to
prevent accumulation of dust and dirt.
At the same time, tighten the screws
on the DC input terminals.
Battery voltage too high
Check for fault with
battery charging system.
Manually reset inverter
by turning switch to "on"
Battery voltage too low
Charge battery. Manually
reset inverter by turning
switch to "on" again.
Battery current too high,
Reduce load on the
probable AC overload
Improve ventilation and
cooling and / or reduce
load on the inverter.
Overload or system
Ensure all loads and
disconnected. Try to
reset the unit by
switching to "on" if unit
still does not operate,
contact your distributor/
merchant/ retailer for
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