AMARAD HELLAS ELECTRONIC AT-502-500VA User manual

Model No.: AT-502-500VA~1000VA
(4) If the transformer is ok, check the appliance(s).
e. When the RED LED lights up
(1) When input voltage is out of normal range, the transformer will go into the high or low voltage
protection status. The output of transformer will be cut off automatically, and the RED LED will
light up.
The output will be automatically restored once the input voltage returns to normal range.
(2) The transformer is built with a thermal sensor to detect the temperature of transformer coils.
When the temperature exceeds the limit, the output of transformer will be cut off automatically,
and the RED LED will light up.
Check if connected appliance(s) exceeds the maximum capacity of transformer. Or wait until
the coils of transformer cool down, the output will be automatically restored.
6. CAUTIONS
● Make sure the appliance is connected to the correct outlets before switching on the transformer.
● Do not connect any appliances whose total power is over the maximum power of the transformer.
● For any appliance with built-in motor or compressor, whose starting power is generally several
times than the rated power that is listed in the rating label. It is recommended to calculate its
starting power at least as twice as its rated capacity if the starting power is not specified.
● The transformer does not change the frequency of the input supply.
Make sure the appliances can accept the same frequency of the input supply.
● Earth cable connection of the transformer and appliance must be secured.
7. PLACEMENT
● Place the transformer in a place where it’s cool, dry and well ventilated.
Place the transformer in a place where the children can’t reach for.●
Do not place the transformer in or near water. ●
Do not place transformer on an unstable cart, stand or table.●
Do not place transformer under direct sunlight, excessive humidity.●
Keep away from fire, heat sources.●
Keep away from corrosive gas or fluid. ●
Do not place power cord in any area where it may get damaged by heavy objects.●
The transformer can only be repaired by the authorized technical service
personnel. Any attempt to open and to repair by the user on his own
could prove to be dangerous.
Placing magnetic storage media on top of the transformer may result in
data corruption.
Earth connections for the transformer and for all appliances connected
should be secured. Without earth connection or unproved earth
connections are dangerous for user’s health, and have high
risk of electronic circuit board faults.
Instruction Manual
Automatic AC Voltage Converter
(Automatic Voltage Step Up & Step Down)
Thank for purchasing this Voltage Converter.
Before operating this unit, please read this instruction manual
thoroughly and carefully. And keep this manual for future use.

The transformer delivers dual output 110V and 220V simultaneously!
Do not plug the appliance into the wrong outlet of the transformer!
Otherwise the appliances might be damaged.
5. OPERATION OF THE TRANSFORMER
a. Connect the electrical appliances to the transformer
(1) Check the specifications of the appliance(s), make sure the total starting power does not
exceed the maximum capacity of the transformer.
(2) Make sure all appliance(s) are turned “OFF” before connection.
(3) Connect the appliance(s) to the transformer.
If the input voltage of appliance(s) is 110-120V, connect it (them) to the 110V outlet of the
transformer. If it is 220-240V, then connect it (them) to the 220V outlet.
b. Connect transformer to mains supply
Plug the input plug of transformer into the wall socket.
c. Switch on the transformer
(1) Press the power switch to “ON” position and GREEN LED will light up.
(2) Switch “ON” the appliance(s).
d. When circuit breaker trips off
(1) If circuit breakers trips off, it means the transformer is over-loaded, or a short circuit happens
inside the transformer or inside the appliance(s).
(2) Switch off the transformer, unplug it from the wall socket, unplug the appliance(s)
from the transformer.
(3) Reset the circuit breaker, plug it again into the wall socket, then switch it on to check if the
transformer is ok or not.
4. SPECIFICATION
Operating Temperature: -10ºC ~ 40 ºC
Storage Temperature: -15ºC ~ 45 ºC
Operating Humidity: <90%, non-condensing
Model Number AT-502-500VA AT-502-1000VA
Maximum Capacity
@ Input 220-240V
Maximum Capacity
@ Input 110-120V
500 Watts
500 Watts
1000 Watts
1000 Watts
Input Voltage
Output Voltage
Protection Class
IP Level
Enviromental
Machine Size
Efficiency
LED Indicator
Protection
110Vac or 220Vac
220Vac or 110Vac
I
>96%
Green LED: Power On
Red LED: Protection (Output is cut off)
Short Circuit Protection: Circuit Breaker Trip Off
High Voltage Cutoff: Output is Cut Off
Low Voltage Protection: Output is Cut Off
Coil Overheating Protection: Output is Cut Off
235x146.2x115mm
3. PRODUCT VIEW
2. FEATURES
● Automatic step up & step down voltage converting, no need manual selecting input voltage.
Dual output 110V and 220V simultaneously. The converted voltage is from the transformer, ●
the same voltage is directly connected to mains supply.
Low voltage protection and automatic resume.●
● High voltage protection and automatic resume.
Transformer coil overheat protection and automatic resume.●
Short circuit protection.●
1.PACKING CONTENT
Voltage Transformer...........1pc
User’s Manual....................1pc
a. Front view of the transformer
AT-502-500VA~1000VA
Red LED: “Protecting” Indicator
Green LED: “Power On” Indicator
230V Outlet
b. Rear view of the transformer
Rear of AT-502-500VA~1000VA
Surge protection.●
AC Input
235x146.2x115mm
110V Outlet