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Magnum RD3924 Inverter/Charger
The Magnum RD3924 Provides Reliable Off-Grid Power from Magnum Energy
The RD Series Inverter/Charger from Magnum Energy is a new generation inverter designed specifically for renewable energy use. The RD Series is powerful, easy-to-use, and best of all, cost effective.
Power Factor Corrected (PFC) Charger: Our PFC charger is built into all of our inverter chargers. It uses less energy from a generator than a standard charger – using 25-30% less AC current than standard chargers.
Safe and reliable: The RD Series is ETL Listed to the stringent requirements of UL 1741, ensuring that the inverter is safe and reliable.
Easy-to-install: Install the RD Series in four easy steps:
1. simply connect the inverter’s output to your distribution circuits or electrical panel.
2.connect your power cable (AC) to the inverter’s easy-toreach terminal block.
3. connect the batteries.
4. and switch on the power.
- You asked and Magnum listened. The Magnum RD3924 Inverter/Charger is loaded with features:
- Choices: The RD Series comes in four power models and 12 and 24 volt models, allowing you to choose the model that is right for you.
- Versatile mounting: Mount the RD Series on a shelf or wall.
- Lightweight: The lightweight aluminum base and cover also provides noise reduction and corrosion resistance.
- Multiple ports: The RD Series provides multiple ports, including an RS485 communication port for network expansion, and a remote port.
- Accessible design: The extra large AC access cover with terminal screw block and 360° DC connection terminals with covers make this inverter more accessible when it needs to be.
- Convenient switches: The RD Series comes with an on/off inverter-mounted switch with an easy-to-read LED indicator.
- Expanded transfer relay: 60 Amp transfer service is available on all models.
- Buy with ease: The RD Series is backed by a two-year (24-month) limited warranty
Accessories and Options*
- Remote control: For convenient finger-tip operation, including the new one-knob™ programming.
- AGS module: Automatically starts and stops your generator based on temperature or battery voltage.
- Battery Monitor Kit
- DC Load Disconnect
- Fuse Blocks
- Remote Switch Adapter
- Series Stacking Interface
The RD Series Inverter/Charger RD3924
Specifications |
RD3924 |
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Inverter Specifications |
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Input battery voltage range |
18 - 32 VDC |
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Nominal AC output voltage |
120 VAC |
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Output frequency and accuracy |
60 Hz ± 0.005% |
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1 msec surge current (amps AC) |
150 |
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100 msec surge current (amps AC) |
90 |
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5 sec surge power (real watts) |
9000 |
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30 sec surge power (real watts) |
6400 |
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5 min surge power (real watts) |
5800 |
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30 min surge power (real watts) |
4750 |
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Continuous power output at 25° C |
3900 VA |
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Rated input battery current |
188 ADC |
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Inverter efficiency (peak) |
93% |
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Transfer time |
16 msecs |
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Search Mode |
.3 ADC |
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No Load (120 VAC output) |
.6 ADC |
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Waveform |
Modified Sine Wave |
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Charger Specifications |
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Continuous output at 25° C |
105 ADC |
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Charger efficiency |
92% |
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Power factor |
> 0.95 |
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Input current at rated output (AC amps) |
29 |
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General Features and Capabilities |
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Transfer relay capability |
2 legs at 30 A for 120 V/30 A or 240 V/60 A service |
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Five stage charging capability |
Bulk, Absorb, Float, Equalize, and Battery Saver™ |
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Battery temperature compensation |
With available temp sensor (battery temp 0 – 50° C) |
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Remote inverter on/off switch |
With available pigtail to connect to dry contact |
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Internal cooling |
0 to 120 cfm variable speed drive using dual 92mm brushless DC fans |
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Overcurrent protection |
Yes, with two overlapping circuits |
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Overtemperature protection |
Yes on transformer, MOSFETS, and battery |
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Conformal coating on PCB’s for corrosion protection |
Yes |
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Powder coated chassis & top for corrosion protection |
Yes |
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Stainless steel fasteners for corrosion protection |
Yes |
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Listings |
ETL listed to UL1741 |
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Warranty |
Two years |
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Environmental Specifications |
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Operating temperature |
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Nonoperating temperature |
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Operating humidity |
0 to 95% RH non condensing |
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Physical Specifications |
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Dimensions (h x w x d) |
13.75” x 12.65” x 8.0” (34.9 cm x 32.1 cm x 20.3 cm) |
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Mounting |
Shelf or wall (vents up) |
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Weight |
45 lb (20 kg) |
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Max operating altitude |
15,000’ (4570 m) |
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