ETA Engineering - Solar Power and Renewable Energy Distributors

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ETA Engineering, Inc.

2010 E. University Dr. Suite 20

Tempe, AZ 85281

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

Arizona Solar Energy Association

Arizona Solar Center

American Wind Energy Association

American Hydrogen Association

Phoenix Electric Auto Association

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

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

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)

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

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.

ETA Engineering -Solar Power Residential Grid-Tie Systems

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©2001-2011 ETA Engineering, Inc. All rights reserved.

Last updated: December 19, 2008   

BCM12 (12 Volt)     

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