Product Details

Intelligent 1250W Dual Transfer Controller AC Power controller for solar system

Model	ME-Q4500W
Rated Power	4500W
Input Voltage	AC110V or AC220-240V
Output Voltage	AC110V or AC220-240V
Transfer Time	≤10ms
LED Indicator	Working Status of Public Power, Inverter and Battery
System Voltage	12V or 24V
BAT. Low Cut-down	10.5V/21V
BAT. Low Recovery	13.5V/27V
Application	Off-grid Solar or Wind System
Product Size	16.5×10×4.4cm

Product introduction
This dual power transfer controller is used between an off-grid system and the public power.the controller is separately connected with public power, interter, battery and load, as the picture shows, in the top of the controller, there is an on/off switch, pls turn on the controller after ensure all the cables are well connected.

The controller can work with both solar system and wind system.
There are 5 indicators at the upside of the controller
(1) public power indicator
(2) inverter indicator
(3) (4) (5) 3 battery state indicators
The battery indicators shows the power state in battery as 75%,50% and 25%.

System working specification:

Process 1:when the battery is fully charged by solar panel,or battery power over 75%,inverter indicator (2) and battery state indicator (3) is shinning green. In this process ,power is provided by the off-grid system.

Process 2:when the power in battery is consumed to 50%,the inverter indicator (2) and battery state indicator (4) is shinning green.In this process,power is provided by the off-grid system.

Process 3: when the power in battery is consumed to 25%,public power indicator(1)is shinning green, and battery state indicator(5) is shinning red.At this time the battery voltageis lower than 10.5V or 21V, the controller will automatically change the power supplier to public in 10ms.In this process, power is provided by the state grid.

Process 4 :when the battery is charged by solar panel again, power is stocked in the battery until 50%,battey state indicator(4) and public power(1) is shinning green.In this process, power is still provided by the state grid, cause the battery voltage does not reach the over discharge return voltage point

Process 5:when the power in battery is over 75%,inverter indicator(2) and battery state indicator(3) is shining green.At this time the voltage return to 13.5V or 27V,the controller will automatically change the power supplier to battery in 10ms.In this process, power is provided by the off-grid system.

Solar System & Wind System

   Dual Power Transfer Controller:
   12V/24V/48V 110V/220V
   Wind Generator:
   S700 S800 S1000 M300 C400

   EW200 EW300 EW400 EW600 EW1000
   Solar Panel:
   Mono Poly

Solar Controller:
PWM MPPT SMART-MPPT

Power Inverter:
Pure sine wave Modified sine wave

W-series
Solar connector:

Cable-MC4 Panel-MC4 T-branch-MC4

Cable-MC3 Panel-MC3 T-branch-MC3
Solar Cable:

2.5mm²4mm²6mm²

Solar Tool:

1. Shipping Information

SHIPPING (Normally arrive port time in working days)
DESTINATION	Express/Courier DHL/FedEx/TNT/UPS	Ship by sea	Ship by air	Ship by EMS
North America	3-7 days	15-24 days	5-7 days	10-12 days
South America	3-7 days	15-25 days	5-7 days	10-12 days
European countries	3-7 days	20-30 days	5-7 days	10-12 days
Africa Countries	3-7 days	45-50 days	5-7 days	10-12 days
The Middle East	3-7 days	15-25 days	5-7 days	10-12 days
Australia	3-7 days	10-15 days	5-7 days	10-12 days

2. Packaging Information

3. Terms Of Payment

Payment Terms: We accept any payment, Such as T/T, L/C, PayPal, Western Union, D/P, D/A, O/A, MasterCard, Cash, etc

We are a professional manufacturer of Dual Transfer Controller for many years. Our company has formed a perfect full-service system integrated by the R&D, manufacture and domestic trading and foreign sales.Based on the trading belief 'Focus on customers,' our company has been calmly handled the market oscillations. For our trading process, we are not just selling our digital meter but also focusing on customers' satisfaction......

1. 24-hour Online service

Please feel free to contact us. Our sales team will provide you with 24 hours better pre-sale,

2. Competitive price

All of our products are supplied directly from factory. So the price is very competitive.

3. Warranty

All products have a three-year warranty.

4. OEM/ODM

With 15-year experiences in this field, we can provide customers with professional suggestion

To promote common development.

5. Distributor

The company now recruit distributor and agent all over the world. Prompt delivery and professional after-sales service are our priority, which makes us to be your reliable partner.