This inverter is electrically isolated between the battery and secondary voltage. This allows earthing of both DC and AC circuits when required. It will deliver up to 300 watts of continuous power, while supplying surge currents up to a massive 1000 watts. DC input is through either a 750mm lead with a cigarette lighter plug on the end, or an 850mm lead with alligator clips. The cigarette lighter plug is fused with a 15A 3AG fuse, while the alligator lead features an inline 35A fuse. The cigarette lighter lead is intended for light applications only, and you must make sure that your cigarette lighter circuit can supply more than 15 amps. The output is a standard 3 pin mains socket. There is a rocker on/off switch, and LED indicators for power and fault. This unit also features fan assisted cooling.

Typical Applications:

Laptop computers, recharging power tools or batteries, lamps and fluorescents up to 300W, 34cm televisions etc.

Specifications:

• Output Power Continuous: 300W
• Output Power Surge: 1000W
• Standby Current: < 300mA
• Input Voltage: 10 ? 15VDC
• Output Wave Form: Modified Sine Wave
• Efficiency: > 90%
• Size: 165(L) x 86(W) x 49(H)mm
• Weight: 0.7kg

Circuit Protection:

• Thermal Shutdown and Alarm: 55�C +/- 5�C (Automatic Recovery)
• Battery Low Alarm: 10.5VDC +/- 0.5VDC
• Battery Low Shutdown: 10.0VDC +/- 0.5VDC
• External Fusing: 35A Maximum

What to Buy- Pure Sine Wave or Modified Sine Wave

Modified Sine Wave is a crude approximation of the 240V waveform, with square wave components in it. Many appliances are fine with this. Typically these are: Most TV, CD, DVD and VCR players, Small power tools Fax machines, Some audio equipment, Most Computers, All incandescent lighting, Most switchmode power supplies, Pure Sine Wave is closer to mains supply and these inverters are much more efficient.
Pure Sine wave inverters are best used for Electric Clocks, Sensitive Equipment, Electronics Weighing Machines, Mains powered PA equipment, All other Tvs, Plug pack powered equipment, Any application where you require the most out of a battery charge

INVERTERS: IMPORTANT NOTICE

We do NOT recommend that you use these products to operate the following: FRIDGES, AIR COMPRESSORS, AIR CONDITIONERS. An inverter is a device, which converts 12VDC or 24VDC into 240VAC. The 240VAC generated is as lethal as the power in homes, and as such should be treated with the same respect. Inverters can be easily damaged, and connecting the input voltage terminals the wrong way around on the battery can damage the unit so please be careful.

Appliances most suitable for connection includes most power tools, lights, TVs, video recorders/players, computers, fax machines, audio equipment. Fluorescent lights can give a highly inductive load on start up which can damage inverters. Appliances not suitable include electric blankets, toasters, hair dryers, irons, radiators, heavy power tools (large angle grinders, saws etc).

Inverters will generally drive inductive loads such as electric motors, but only if the start up current is not high. Generally high start up current situations is when the motor is permanently coupled to a load such as a refrigerator or air conditioner. Many other motors such as in drills, small angle grinders, buffers etc start up under virtually no load and this is usually OK for the inverter provided the tool is within the inverter rating. It needs to be pointed out that one of the major differences between a domestic power point and inverter is that the source impedance of a power point is very low compared to the inverter. This is why inverters have trouble with appliances with high start up currents and a domestic power point does not. Another thing that must be remembered is the special case of fluorescent lights with ballast chokes in them (by far the most common type).

Manufacturers of fluoro lights assume that they are just going to be used in a normal 240V 50Hz sine wave supply. They are required to supply a product that does not overly distort the mains waveform. They generally comply with this by installing a say 3.3mF non-polarised capacitor across the mains/neutral supply side inside the case of the lamp. This is called a power factor correction factor capacitor. This seems to work OK for a sine wave supply from a low source impedance. When you drive such a device with a square wave 240V power, different things start to happen. The power factor correction capacitor presents a much greater load to a square wave sign signal than it would dif if it was a sine wave. Should you be unsure of your requirements in an inverter please feel free to contact us for assistance. Email paul@campadelectronics.com.au