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Dependable Solar Inc.
Website for Turnkey Solar Solutions in Arizona


ETA Engineering, Inc.
4049 E. Presidio St., Suite 117
Mesa, AZ 85215
Phone: 480-966-1380
Toll Free: 1-877-964-4188
Fax: 1-480-966-1516
info@etaengineering.com

ETA Charge Regulators: Built-in Reliability

Battery Charging Methodology

Solar Association Arizona Solar Energy Association

Solar CenterArizona Solar Center

WindAmerican Wind Energy Association

Hydrogen American Hydrogen Association

Phoenix Electric Auto Association

Green Building Scottsdale Green Building Program

Note: Prices are subject to change without notice due to changes in other vendors' prices to us. These changes may arise from normal product development plus fluctuations in foreign exchange rates and commodity prices.

Frequently asked questions (FAQ).

PBRL Charge Controller with Low Voltage Disconnect

9 Amp PV Battery Charge Regulator (PBR) with LVD

9 amp Photovoltaic Battery Charge Regulator with Low Voltage Disconnect

Rated Input Current: 9 Amp
Surge Rating: 18 Amps for 20 sec
Voltage(s) Available: 12, 24 VDC
Max. Load Current: 15 Amps
LVD (12 V): 11.7 VDC
LVD (24 V): 23.4 VDC
Mounting Holes: Two 3/16"
Weight: 0.28 lb (0.13 kg)
Dimensions (in): 4.75 x 3.88 x 1.75
PBRL12-9 (12 Volt, 9 Amp) 
PBRL24-9 (24 Volt, 9 Amp) 

22 Amp PV Battery Charge Regulator (PBR) with LVD

22 amp Photovoltaic Battery Charge Regulator with Low Voltage Disconnect

Rated Input Current: 22 Amp
Surge Rating: 44 Amps for 20 sec
Voltage(s) Available: 12, 24  VDC
Max. Load Current: 15 Amps
LVD (12 V): 11.7 VDC
Mounting Holes: Two 3/16"
Weight: 0.88 lb (0.13 kg)
Dimensions (in): 4.75 x 3.88 x 1.75
PBRL12-22 (12 Volt, 22 Amp) 
PBRL24-22 (24 Volt, 22 Amp) 
Battery Capacity Meter (BCM)

Battery Capacity Meter

Voltages Available: 12, 24, 36, 48
Cable Length: 60 in
Accuracy: 0.05 Vdc (12 Vdc)
Weight: 0.375 lbs (0.170 kg)
Dimensions (in): 2.0 x 4.0 x 0.75
BCM12 (12 Volt) 
BCM24 (24 Volt)
BCM48 (48 Volt)
Selecting and Wiring your PBRL Regulator

Features
DC Load Controller with Low Voltage Disconnect (LVD)
The PBRL Charge Regulator incorporates a DC load controller that can automatically detect low battery voltage and disconnect power to the DC load. After the battery bank has sufficiently recharged, the PBRL automatically reconnects the DC load.  This feature can significantly increase life of the battery bank.
Parallel Switching Shunt
 When the maximum charging voltage at a given temperature is reached, the parallel switch (U.S. Patent #4661758) automatically shunts the solar array to prevent overcharging the batteries.
Temperature Compensation  
To extend battery life and prevent stratification, these regulators automatically adjust  for the temperature of the batteries.
Durable Construction  
Specifically designed for developing nations and sustainable development projects, ETA controllers are extremely rugged. ETA mounts the regulator's circuit board in an anodized aluminum heat sink and then encapsulates it in an epoxy-resin. This ensures that the regulator circuitry is protected from the environment.
Pulse Width Modulation  
Automatically adjusting to the load requirements, battery state of charge, and battery age, Pulse Width Modulation (PWM) brings the battery up to maximum charge without trickle charging. This design maximizes battery life and continuously adjusts to the battery requirements as opposed to 3-stage charging.
Overload & Transient Surge Protection  
All regulators provide an overload rating of twice the specified input current for 20 seconds to accommodate the "edge of cloud effect". Solid state transient absorbing avalanche diodes protect the charge controller from lightning induced surges and inductive load spikes.
Solid State Electronics  
ETA Engineering's solar charge controllers have no moving parts that can fail. To ensure safety, ETA excludes the use of mercury switches from all of our regulator designs.
High Reliability  
These designs use High Safety Factors to minimize stress on all critical components, which gives exceptional life. Products using this design installed in the late 1980's are still going strong.
High Efficiency  
The regulators contain blocking diodes chosen for minimum forward voltage drop which maximizes charging current from the PV module(s). The static current draw is only about 2 milliamps plus the current to drive any LED that may be on.
Easy to Install  
PBR regulators are pre-set to operate with your particular battery type. The unit requires no programming or adjustment. Just make your hard-wire connections and begin charging!
5 Year Warranty  
ETA Engineering stands by its products. All PBR Regulators are backed by a 5 year unconditional warranty.

OEM, Dealer and Distributor Inquiries Welcomed.

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©2001-2008 ETA Engineering, Inc. All rights reserved. Last updated: December 19, 2008