Power Star W7 Pure Sine Wave Inverter/Charger User’s Manual www.sigineer.com
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1.2 Precautions When Working with Batteries
1.2.1 If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enters eye,
immediately flood eye with running cold water for at least 20 minutes and get medical attention
immediately.
1.2.2 Never smoke or allow a spark or flame in vicinity of battery or engine.
1.2.3 Do not drop a metal tool on the battery. The resulting spark or short-circuit on the battery of other
electrical part may cause an explosion.
1.2.4. Remove personal metal items such as rings, bracelets, necklaces, and watches when working with a
lead-acid battery. A lead-acid battery produces a short-circuit current high enough to weld a ring or the like
to metal, causing a severe burn.
1.2.5 To reduce the risk of injury, charge only rechargeable batteries such as deep-cycle lead acid, lead
antimony, lead calcium gel cell, absorbed mat, and NiCad/NiFe or Lithium battery. Other types of batteries
may burst, causing personal injury and damage.
2 Introduction
2.1 General Information
Thank you for purchasing the PSW7 Series Pure Sine Wave Inverter/Charger.
The PSW7 Series Pure Sine Wave Inverter/Charger is a transformer based inverter and battery charger with
an unprecedented conversion efficiency of 90%.
This lines has two popular models: the 600 watt inverter, 1000 watt invertr.
It features power factor corrected, sophisticated multi-stage charging control and pure sine wave output with
high surge capability to meet power needs of all sorts of demanding loads without putting the equipment at
risk.
In response to the increasing demand of more advanced battery charging, our engineering team equipped the
inverter with a Battery Temperature Sensing probe for increased charging precision.
The generous 300% surge capacity of 20 seconds makes it possible to support demanding inductive loads.
The AC/Battery priority, auto generator start functionality and optional built-in charger make it ideally
suitable to work in backup power or anti-idle applications.
When customized to Battery priority mode via a DIP switch, the Power Star W7 inverter will extract
maximum power from external power sources and a minimal cycle of battery will be required. With the
availability of auto generator start, an electrical generator can be integrated into the system and started when
the battery voltage goes low.
With audible buzzer and remote LCD panel, the inverter gives the users comprehensive information of the
operation status, making it easier for maintenance and troubleshooting.
Thus the PSW7 Series Pure Sine Wave Inverter/Charger is suitable for applications including renewable
energy systems, utility, truck, RV and emergency vehicles etc.
To get the most out of the power inverter, it must be installed, used and maintained properly. Please read the
instructions in this manual before installing and operating.
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