Redarc Solar SRPA0120, Solar SRPA0360, Solar SRPA0240 Instruction Manual

Solar Regulator

SRPA0120
SRPA0240
SRPA0360

THE SOLAR REGULATOR

REDARC solar regulators ensure that the power supplied by your solar panels is at the right voltage to charge
your lead acid house or auxiliary batteries. REDARC solar regulators are Pulse Width Modulated (PWM)
controlled and incorporate automatic system voltage detection.
Redarc solar regulators come in 10A, 20A and 30A models which are capable of charging either 12V or 24V
battery systems.
Redarc Solar Regulators use genuine Anderson™ SB™50 connectors.
The SRPA regulators are supplied factory set to the AGM battery type setting; A REDARC remote monitor
(SRPA-RM) is required to change the battery type.

WARNING & SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS - This manual contains IMPORTANT SAFETY INSTRUCTIONS for REDARC
Solar Regulators.

DO NOT OPERATE THE SOLAR REGULATOR UNLESS YOU HAVE READ AND UNDERSTOOD THIS MANUAL
AND THE SYSTEM IS SETUP AS PER THESE INSTRUCTIONS. REDARC RECOMMENDS THAT ANY

REGULATOR/CHARGER BE INSTALLED BY A SUITABLY QUALIFIED PERSON.

RISK OF EXPLOSIVE GASES:
WORKING IN THE VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES GENERATE EXPLOSIVE

GASES DURING NORMAL OPERATION. FOR THIS REASON, IT IS OF UTMOST IMPORTANCE THAT YOU
FOLLOW THE INSTRUCTIONS EACH TIME YOU USE THE REGULATOR.

1. Solar Regulators should not be used by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they are supervised or have been
instructed on how to use the appliance by a person responsible for their safety. Children should be
supervised to ensure that they do not play with the Solar Regulator.

2. Do NOT use the Solar Regulator to charge non-rechargeable batteries. Doing so may result in harm to
the user and/or damage to the regulator and/or solar blanket. Only use the Solar Regulator for charging
standard lead acid, calcium content, Gel & AGM type 12V batteries.

3. Over Charging Hazard. Failure to connect solar panel’s negative wire directly to the regulator may result
in overcharging the battery. The solar panel’s negative wire must be connected direct to the regulator
only.

4. Check the battery manufacturer’s data for your battery and ensure that the voltage of the charging
profi le you select does not exceed the manufacturer’s recommended maximum charging voltage. If the
‘Absorption’ voltage for your battery type is too high, please select another charging profi le. The Solar
Regulator is not intended to supply power to a low voltage electrical system other than to charge a
battery.

5. Electrical Hazard. Incorrect connection of batteries and solar panels in Parallel or Series can subject
the regulator to high voltages that will damage the regulator. Ensure the recommended connections
and sequences are followed and that the rated current and/or wattage of the regulator is not exceeded.

SAL.FOR.Instruction Manual Solar Regulators – DOC393 – Version 5

1

WARNING & SAFETY INSTRUCTIONS

6. NEVER smoke or allow a spark or fl ame in vicinity of battery or engine. This may cause the battery to
explode.

7. PERSONAL SAFETY PRECAUTIONS

To assist with the safe operation and use of the Solar Regulator:
a) Wear complete eye protection and clothing protection. Avoid touching eyes while working near a battery.
b) If battery acid contacts your skin or clothing, remove the affected clothing and wash the affected area

of your skin immediately with soap and water. If battery acid enters your eye, immediately fl ood the eye
with running cold water for at least 10 minutes and seek medical assistance immediately.

1. The Solar Regulator will achieve best results when proper battery maintenance is regularly performed.
This includes but is not limited to checking water and specifi c gravity levels of the battery.

CONTENTS

The Solar Regulator 1
Warning & Safety Instructions 1
Contents 2

1. Introduction 3

1.1. Dimensions 3

1.2. Regulator Function 3

2. The Solar Regulator 4

2.1. Regulator Connection 4

2.2. LED Indication 4

2.3. Specifi cations 5

3. System Setup 6

3.1. Installation Notes 6

3.2. Fuse Protection 7

3.3. Accessories 8

3.3.1. SRPA-RM 8

3.3.2. REDARC Cable Range 8

4. System Wiring 9

4.1. 12V Standard System 9

4.2. 24V Standard System 10

4.3. Wiring Multiple Panels 12V 11

4.4. Wiring Multiple Panels 24V 12

2

1 INTRODUCTION

1.1 DIMENSIONS

153 mm

135 mm

98 mm (SRPA0120)

103mm (SRPA0240)

108mm (SRPA0360)

28 mm

1.2 REGULATOR FUNCTION

The SRPA regulators are supplied factory set to the AGM battery type setting; A REDARC remote monitor
(SRPA-RM) is required to change the battery type.

Solar Panel LED1
Indicator

Battery LED2
Indicator

Battery Output

Solar Panel Input

RJ45 Remote Monitor
Connector

RJ45 Connector Cap

3

2. THE SOLAR REGULATOR

2.1 REGULATOR CONNECTION

Connect to the Battery and Solar Panel via an Anderson™ SB™50, 50A grey connector.
Connect to the battery fi rst before the solar panel.
The REDARC Solar Regulator should be connected as close as possible to the battery it is charging.
Refer to section 3.1 Installation notes and section 4. System Wiring.
Caution: Incorrect connection of the battery or solar panel can damage the regulator, please confi rm all
wiring polarity before connection is made.

2.2 LED INDICATION

LED Status On Solid 1 fl ash/second Off 3 fl ashes/second

LED1 - Solar panel (Green) Normal Charging No Charge N/A

LED2 - Battery (Green) Normal Battery Full N/A Over voltage

LED2 - Battery (Red) Over Discharge

N/A

LED2 - Battery (Orange) Under Voltage

LED1 - Green
LED2 - Red

LED1 - Green
LED2 - Orange

LED1 fl ashing green - 1 fl ash/second

The regulator is charging the battery and all
functions are normal.

LED2 fl ashing green - 1 fl ash/second

The battery is full and all functions are normal.

LED1 off

There is no charge from the solar panel. Check the
solar panel is connected correctly and the panel is
in full sunlight.

LED2 solid green

The battery is connected and the voltage range is
normal.

System voltage error

N/A

Over temperature

Solar Panel LED1
Indicator

Battery LED2
Indicator

LED1 Green & LED2 Red - 3 fl ashes/second

The regulator has a solar panel or battery
connected producing a voltage outside the system
limits, please remove and check the solar panel or
battery voltage.

LED2 solid red

The battery has experienced a high rate of
discharge and the regulator has stopped charging,
check battery charge level and loads connected.

LED2 solid orange

The battery voltage is low.

LED1 Green & LED2 orange - 3 fl ashes/second

The regulator internal temperature has exceeded
80°C and will stop charging until the temperature is
reduced.

4