Solar Converters EQ 12/48-30A DC to DC, Up/Down Converter

NOTE: This unit should not be used as a step up or step down transformer to power a load directly. Step up applications can use the CV, constant voltage regulator units and step down applications can use the PPT step down transformer. Using the EQ in either of these applications can cause damage to the EQ and will void warranty.

Model: EQ 12/48-30

Solar Converters Inc.
Battery Equalizer
EQ 12/48-30

Application

This unit is an up or down voltage converter whose output is proportional to its input. It functions both ways, producing 12 V @ 30 Amps from a 48 V input or can be connected backwards to produce 48 V @ 7.5 Amps from a 12 V input.

Also, regulated models are available to produce a fixed output voltage instead of the proprotional output. For example, Model EQ 12/48-25 R13.5 produces a fixed 13.5 V output at 40 amps from a 48 V nominal battery source.

When connected across a 48 V battery, it functions as a battery equalizer, allowing loads to be taken off of the 12 V battery section of a 48 V battery pack without fear of damage to the battery pack due to voltage mismatch.

Features

• >94 % efficiency, typically 93 % over 20 % load
• Bi-directional power flow
• Weatherproof, NEMA 3R enclosure
• Simple to use

Voltage Regulation Mode

Proportional:

This standard unit regulates the output voltage proportional to 1/4 the input when connected 48 V input and regulates the output to 4 X input when connected 12 V input. This characteristic, when connected across 4 X 12 V batteries in a 48 V configuration, will keep the batteries at equal voltages.

Fixed:

Special units are available for example EQ 12/48-30 RXX where XX is the voltage on the 12 V side that the voltage is to be regulated to. For example, EQ 12/48-30 R13.6 will output 13.6 V @ 30 amps to either power a 12 V load or charge a 12 V battery to 13.6 V.

Note: For units that require a fixed voltage at the higher voltage output, for example, to charge a 48 V battery from a 12 V battery, use one of the Constant Voltage Regulators

Electrical Specifications	Input low side	Input high side
Input Voltage (nominal battery) V	12V	48V
Output Voltage	48V	12V
Output Current	7.5A Current Limited	30A Current Limited
Ripple at load	30mV rms	30mV rms
Efficiency	>96%	>96%

Mechanical Specifications

Enclosure:

• Weatherproof, NEMA 3R enclosure

Dimensions:

• 12" X 10" X 4" nominal

Temperature Range:

• -40 deg C to 60 deg C

• It is recommended, as with all electronics, that the unit not be placed in direct sunshine

Terminations:

• #6 AWG Eurstyle Terminal block: High, Common, Low

Humidity:

• Rainproof

Note: In the interest of continuous product improvement, specifications subject to change without notice.

Order Model No:
EQ 12/48-30
EQ 12/48-30 RXX where XX is the specified regulated voltage on the 12 V side

PDF Documentation Download

EQ 12/48-30

Special Shipping Note:
All Solar Converter Products are behind in production. These items are usually shipped directly from the manufacturer in Canada. They cannot be shipped by any expedited methods such as UPS Blue or Red. They will generally be shipped via Canadian Express Mail which avoids import brokerage fees of $50-$60. Lead time on these products may be up to 4-6 weeks depending on their production. This is true of all Solar Converters products with the exception of the battery desulphator (item code SORBD-2) that we stock in our warehouse. If you want Solar Converters products to be shipped by normal Canadian Post, but would prefer to have the rest of your order to be shipped by a faster method, please write this information in your order's notes during checkout.