Flexcharge™ NC30L12

The Flexcharge™ NC30L12 (shown here) is the standard controller from this family of controllers. These controllers are designed for the PV user who requires the highest levels of system dependability, lowest battery watering maintenance, longest life from flooded lead acid and gel battery technologies and the protections of a low battery disconnect.

For Lead Acid GEL, AGM, and Flooded cell batteries. Do not use on Lithium batteries of any type.

These controllers are in use around the world including the USA, Saudi Arabian Deserts to Antarctica See the Gallery. With these controllers performing dependably in those locations, you can be assured it will work for you.

As with all Flexcharge™ controllers the NC30L12 controllers are designed using surface mount technology components. Low standby power consumption is achieved in these controllers with a maximum 6 mA typical parasitic current draw. Each controller is tested for proper operation prior to being shipped.

Indicators

The complexity and quantity of status indicators were intentionally kept to a minimum on the NC30L12. The two dual color LEDs smartly show when the batteries are being charged by the green section of the top LED. When the controller is regulating the RED section of the top LED shows RED. When the load is ON, the lower LED will glow Green, and when the controller is in Low Voltage Disconnect, the lower LED will glow red.

Operation

The NC30L12 use the Flexcharge Charge method described at this link for superior battery operation.The circuitry is designed to ignore numerous types of false inputs from stray light sources.

Unlike a number of controllers on the market, the NC30L12 controllers switch power to the Positive Side of the Load and the Battery Charging connections. This allows the user to connect all the system grounds to one location rather than running a separate wire for PV-, Load- and Battery- to the controller, a feature that is required for UL approval.One small but convenient feature not found on competitors controllers but is included with the NC30L12 is the Manual Low Voltage Disconnect RESET Circuit. This function is also used to test the load circuitry after the installation is completed, and / or when The Low Battery Disconnect circuitry is active. To activate the RESET circuit pass a small magnet over the RED Low Battery Symbol. The load will also illuminate briefly indicating that the Load Circuitry and Low Battery Voltage Disconnect circuit is functioning properly.

Features

• Waterproof packaging.
• Works on GEL, AGM, Lead ACID and Ni-Cad Flooded cell batteries.
• Reverse polarity protected on battery wires.
• Easy to read LED indicators clearly display the controller’s status.
• High efficiency charging circuitry. Insertion Loss resistance of only 0.080 Ohms on 12A Model, 0.008 Ohms on the 30A model.
• Field select for 12V or 24V operation. Shipped ready for 12V systems, simply cut a wire jumper for 24V
• Order with Load ON at Dusk, OFF at Dawn operation, Load Flashing, or Load always ON.
• Low battery voltage Load Disconnect (LVD) and automatic LVD reset at dawn (A SES Flexcharge Patented feature).
• Manual Load Test / LVD Reset magnetically operated switch located under the load status indicator. Easily reset the LVD circuit after installation and test the controller’s load circuitry.
• Delayed Low Battery Disconnect to prevent disconnect during momentarily high load currents.
• Delayed Dawn sensing circuit to prevent load switching during momentarily bright light levels (i.e. Lightning flashes, vehicle lights). •Small enclosure 3″H x 3″W x 1.5″D + mounting feet.

Options

• Temperature Compensation.
• High current models (NC30L12, NC12L30, & NC30L30) 30 ampere charge and/or load capacities.
• Integral Digital Load Timer. Use with Dusk to Dawn Model. Starts timer at dusk then turns the load OFF after the selected time has elapsed. Set Run times up to 7.5 hour in 1/2; hour increments or 15 hours in or 1 hour increments, includes Dawn Override.
• Integral Load Flasher circuitry. Order flash repeat times from 0.25 sec to 10 sec with ON-Times from 0.1 sec to 5 sec. Specify when ordering.

NC30L12 Operating Characteristics

Parameter	12V Selected	24V Selected
Regulated Peak Charge Voltag	14.25V	28.50V
Charge Reconnect Voltage	13.70V	27.40V
PV Voltage at Dusk – Load ON	4V	8V
PV Voltage at Dawn- Load OFF	6V	12V
Low Voltage Disconnect (LVD)	10.92V	21.84V
Auto LVD Reset (continuous ON mode)	12.9V	25.8V
Auto LVD Reset (Dusk to Dawn mode)	With Charge LED ON	With Charge LED ON
Controller Parasitic current
Charging	5.0mA	5.0mA
Standby	2.3mA	2.3mA
Load ON	4.0mA	4.0mA
LVD	5.6mA	5.6mA
Input Voltage/Current Limits (30A Model)
PV Voltage	0-50V	0-50V
Battery Voltage	0-50V	0-50V
Charge Current	0-30A	0-30A
Load Current	0-12A	0-12A
Fuse Rating (Max)	35A	35A