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Introduction
This product is used where the LE-v50 is being used on extremely windy sites and there is a danger
that the turbine could over-charge the battery. Please read this manual thoroughly before
attempting to assemble, install or operate your DL-300 Charge Controller. This will assure optimum
performance and safety.
The DL-300 Series Dump Controller and Load is an integrated solution designed to prevent 12 or 24
Volt batteries from overcharging. It is designed to be used with small wind systems operating an
LE-v50 turbine. Compact and easy to install, the DL-300 incorporates a 300 Watt resistor / heater
and controller board in a stout powder coated steel enclosure.
Operation & Specification
As the LE-v50 turbine charges the batteries the State of Charge (SOC) and battery voltage will rise.
Once the batteries reach full capacity, the dump load controller begins to bleed power from the
turbine into the dump load. This energy is then dissipated as heat into the surrounding
environment. More or less power is diverted to the dump load according to how much is being
supplied to the battery and also in relation to the state of charge of the battery.
The DL-300 Features:
PWM (Pulse Width Modulation) for highest charging performance without flicker
Selectable three stage charging or over-voltage protection mode
Selectable for sealed or flooded batteries using jumpers
Power, 12 Volt version, DL-300-12:
Recommend fuse or circuit breaker: 30 Amps
Integrated load resistor: 300 Watt, wire wound
Quiescent current when not load dumping: 2.6mA @ 12 Volts
Power, 24 Volt version, DL-300-24:
Recommend fuse or circuit breaker: 15 Amps
Integrated load resistor: 300 Watt, wire wound
Quiescent current when not load dumping: 3.0mA @ 24 Volts
Connections:
#10-32 brass screws for V+ and V-
Two 1/2" / 3/4" concentric NPT knockouts and two 1/2" NPT knockouts
Mounting:
Mounts to vertical concrete, metal, drywall, or other non-flammable surface
Uses four #10 screws
Body sits 19 mm out from wall
Enclosure suitable for indoor mounting
Weight and Dimensions:
Dimensions: 88 mm wide, 95 mm tall, 470 mm long (3.375 x 3.75 x 18.5 in)
Weight: 1.94 Kg (4.28 pounds)
Shipping Dimensions: 102 mm wide, 108 mm tall, 508 mm long (4.0 x 4.25 x 20 in)
Shipping Weight: 2.15 Kg (4.75 pounds)
Materials:
Enclosure: 18 gauge mild steel, powder coated black
Circuit board: FR-4, 1.6 mm (0.062 in), double sided, plated through holes, solder mask, silk screen,
gold plating
Hardware: stainless steel, zinc plated steel, aluminium, and Nylon
Tel: +44 (0) 1981 241668
Skyrrid Farm, Pontrilas, Hereford. HR2 0BW. UK
www.leadingedgepower.com
Rev K
Page 23 of 30
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