MP:150
Mobile Power Inverter
MP:300
Mobile Power Inverter
MP:500
Mobile Power Inverter
User Manual
www.ringautomotive.co.uk
12v DC to 230v, 50Hz AC Mains Inverter
RINVD150 • RINVD300 • RINVD500
RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
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2
Introduction
The Ring Digital Inverter is an electronic device that converts a low voltage 12v DC current from a battery, or
other source, to 230 volts 50 Hz AC mains power.
Special attention should be made to CAUTION statements in this user’s manual.
CAUTION statements identify conditions or practices that could result in damage to your Digital Inverter or to
equipment that you are using with it.
Power Supply
The battery or power supply must provide between 10.5 and 14.5 volts DC (a 12v car or leisure battery will
usually provide this) and must be able to provide sufficient current to operate the load (the item you require
to power)
The power supply may be a battery or a regulated DC power supply. In order to find out if your power supply is big
enough, divide the power consumption of the load (in Watts) by the input voltage (12v in the case of most vehicle
batteries) this will give you the current (in amps) that the power supply must deliver.
EXAMPLE: Load is rated at 100 watts
Power supply must be able to deliver: 100 / 12 = 8.3 amps
CAUTION THE RINVD150, RINVD300 OR RINVD500 MUST ONLY BE CONNECTED TO BATTERIES OR
REGULATED POWER SUPPLY WITH A NOMINAL DC OUTPUT VOLTAGE OF 12 VOLTS. THE DIGITAL INVERTER
WILL NOT OPERATE FROM 24V POWER SUPPLY.
Connecting to power supply
RINVD150
The RINVD150 Digital Inverter is fitted with a 12v power lead plug (internally fused) with 0.5m of cable for
connection to the power lead socket in your vehicle. The tip of the plug is positive and the side contact is negative.
Push firmly into the cigarette lighter power socket in order to ensure a good contact.
RINVD300 & RINVD500
The RINVD300 & RINVD500 Digital Inverter is fitted with two 4mm socket/screw connectors that enable
connection to be made to a 12v vehicle or leisure battery. The red is the positive and the black is negative cable.
The cables allow you to un-screw the socket screw on the Digital Inverter and connect according to the correct
colour, the crocodile clamps should then be connected to a 12v leisure battery onto the correct terminals
designated. Red (+) and black (-)
The RINVD300 only (not RINVD500) is also fitted with a 12v power lead (see RINVD150 for details).
Please check your appliance power consumption with rating of your power socket (typically 120 to 180 watts)
when connecting the RINVD300 to the power lead plug. Above this rating connect directly to the battery
CAUTION DO NOT USE WITH POSITIVE GROUND ELECTRICAL SYSTEMS
The majority of modern cars have negative ground electrical systems. If you are in any doubt, please check with a
qualified auto electrician or your local vehicle main dealer.
Connecting your Digital Inverter
Connect the Digital Inverter input to the vehicle/leisure battery using the cables (12v power lead for RINVD150 &
RINVD300) supplied. Ensure the load requirements are within the parameters of the Digital Inverter output; plug
your appliance into the socket of the Digital Inverter.
CAUTION Certain rechargeable devices are designed to be plugged directly into an AC socket to be recharged.
These devices can damage the Digital Inverter. When first using a rechargeable device, monitor its temperature for
10 minutes to ensure overheating does not occur.
In some cases there can be an incompatibility between some appliances and modified sine wave inverters. When
in doubt, consult with your appliance manual.
Fuse replacement
RINVD150 – 1 x 25amps RINVD300 – 2 x 25amps RINVD500 – 3 x 25 amps
Please consult a qualified electrician to replace any fuses.
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MP:150
Mobile Power Inverter
MP:300
Mobile Power Inverter
MP:500
Mobile Power Inverter
3
Positioning of Digital Inverter
The following points should be noted:
• The Digital Inverter is not waterproof.
• The Digital Inverter should be placed on a ventilated at surface.
• Do not put the Digital Inverter on or near direct heat or expose to sunlight.
• Do not place the Digital Inverter or around ammable environments.
Operating tips
Inductive loads such as TVs and Stereos (devices with a coil or transformer in it) may require more current to
operate than a resistive load of the same wattage reading. Televisions may require several times their wattage
reading to ‘Start up’
This condition may require repeated ON/OFF switching of the inverter in order to get them started.
NOTE: Products providing heat, e.g. heaters, hair dryers, require a higher wattage to operate.
Check appliance details.
It is recommended that if you are using the Digital Inverter from you vehicle battery you regularly run your engine
in order to recharge the battery.
Protective features
Low battery Protection – An alarm will sound when voltage from the battery drops to 10.6 volts. This indicates
that the battery the Digital Inverter is running off requires recharging. The Digital Inverter will automatically
shutdown if is voltage is allowed to drop to 10.5 volts.
Over Voltage Protection – The Digital Inverter will automatically shutdown if the input voltage exceeds 15
volts DC.
Reverse Polarity Protection – This product has reverse polarity protection. If connected incorrectly the product
will not function.
Overload protection – The Digital Inverter will automatically shut down if the continuous draw exceeds its
maximum rating
Temperature Protection – If the temperature of the internal heat sink reaches 65°C the Digital Inverter will shut
down automatically. Allow to cool before using again.
CAUTION
• When connecting directly to a battery or other power supply ensure that you observe correct polarity
• Do not exceed the maximum input voltage (15 Volts DC)
• Do not remove the protective cover under any circumstances unless by a qualied electrician
• Improper use of this Digital Inverter could cause damage to property and could cause injury or loss of life.
Additional features of your Ring Digital Inverter
1.) Red LED – This lights up to indicate protection status, i.e. when the unit shuts down, please check the above
protective features.
2.) Green LED - This lights up to indicate the power is on.
3.) Digital display – This display gives two readings that alternate every 2 to 3 seconds
a. Battery voltage input readout - This will be between 10.5 volts (at this point the Digital Inverter would shut
down (see Low battery protection) and 15 volts (see Over voltage protection). Normally a fully charged
battery will read between 12.7 and 13.5 volts. At 11.5 volts or below the battery is in need of recharging.
b. Power consumption wattage readout – This reading is watts shows the power being consumed. Care must
be taken to keep the power consumption within the continuous power rating of the Digital Inverter. Be
aware that the higher the power consumption the quicker it will drain the battery.
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MP:150
Mobile Power Inverter
MP:300
Mobile Power Inverter
MP:500
Mobile Power Inverter
Distributed by:
Ring Automotive Limited Gelderd Road, Leeds, England LS12 6NA
+44 (0)113 213 2000 +44 (0)113 231 0266
autosales@ringautomotive.co.uk www.ringautomotive.co.uk
Ring Automotive & Ring Powering brands are registered trademarks
L376
Troubleshooting Guide
Possible causes
1. Battery has discharged to 10v.
2. The inverter has overheated. This
could be due to poor ventilation.
3. Poor battery condition
1. Inverter is overloaded.
2. Internal fuses have blown.
3. Fuse in power lead plug has blown.
4. Vehicle fuse has blown as the
maximum wattage using the power
lead plug is typically between 120
and 180 watts.
1. Internal battery is not fully charged.
2. AC appliance power consumption
is higher than expected.
Possible solution
Turn off the inverter on/off switch
and recharge the battery.
Turn off the inverter and allow to cool
for 10 mins.
Replace battery.
Reduce load, not exceeding
maximum rating.
Fuse replacement (qualified
electrician only).
Replace fuse in cigarette lighter plug
- 15 amp.
Replace vehicle fuse and ensure if
using power lead plug the wattage
does not exceed maximum fuse
wattage. Above this connect directly
to the vehicle battery.
Recharge the battery.
Check AC appliance wattage rating is
within scope of inverter.
Symptom
AC appliance will not operate; the
audible alarm is sounding.
AC appliance will not operate; the
audible alarm is not sounding.
Above symptom when using the 12v
power lead plug on the RINDV300
Run time is less than expected
Specifications
Digital Inverter Model RINVD150 RINVD300 RINVD500
Maximum power rating (5 mins) 150watts 300watts 500watts
Continuous power rating (4 hours) 120watts 240watts 400watts
Peak Power rating 300watts 600watts 1000watts
Standby current 0.15amps 0.25amps 0.30amps
USB output 5v, 0.5amp (USB2.0) 5v, 0.5amp (USB2.0) 5v, 0.5amp (USB2.0)
Waveform Modified Sine Modified Sine Modified Sine
Input Voltage Range 11–15 Volts DC 11–15 Volts DC 11–15Volts DC
AC Socket 3 Pin Mains 3 Pin Mains 3 Pin Mains
Fuse 1 x 25 amp 2 x 25 amp 3 x 25 amp
Weight (kgs) 0.515 0.625 0.935
Dimensions (mm) H55 L179 W113 H55 L179 W113 H63 L237 W140
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