The Woodward SEG BL20400 (also designated as BL20-400) is a robust, industrial-grade Battery Charger engineered to provide reliable DC power for critical starting and control systems. Designed for longevity and performance, this unit utilizes advanced charging technology to maintain lead-acid or nickel-cadmium battery banks in optimal condition, ensuring that backup power is available immediately when needed for generators, switchgear, or industrial instrumentation.
📋 Product Specifications
-
Model Number: BL20400 / BL20-400
-
Input Voltage: Wide-range AC input (typically 110V–240V AC)
-
Output Voltage: 24V DC (nominal)
-
Output Current: Up to 20A (Model/Load dependent)
-
Dimensions: Standard cabinet-mount format (Approx. 350mm x 250mm x 150mm)
-
Weight: 4.8 kg
-
Country of Origin: Germany
-
Operating Temperature: -10°C to +50°C
-
Protection Class: IP20
🏢 Application Areas
This battery charger is a staple in power generation and distribution environments. It is primarily used to maintain the starter batteries for emergency backup generators and to supply DC power to protection relays and control circuit breakers in electrical substations. Its ability to provide continuous float charging makes it ideal for facilities where battery health is a critical component of the overall safety and redundancy plan, such as data centers, oil & gas platforms, and manufacturing plants.
🛠️ Product Usage Instructions
-
-
Safety First: Ensure that the input AC supply is fused according to the manufacturer’s rating. Always disconnect the battery leads before servicing to prevent accidental short-circuits.
-
Installation: Mount the unit vertically in a well-ventilated enclosure to allow for natural convection cooling. Maintain at least 50mm of clearance around the top and bottom vents.
-
Wiring: Connect the DC output terminals to the battery bank, observing correct polarity (Positive to Positive, Negative to Negative). Improper polarity connection will trigger internal protection circuits.
-
Setup: Use the internal potentiometers or configuration switches (if applicable) to set the float and boost voltage levels to match the manufacturer’s specifications of your specific battery chemistry.
-
Validation: Measure the output voltage across the battery terminals while the charger is active. A steady float voltage (typically 27.2V for a 24V nominal bank) indicates correct operation.
-
❓ Q&A
What does “BL20400” designate? The “BL” series refers to Woodward SEG’s range of industrial chargers, while the “20” typically denotes the 20A output current capacity and “400” often relates to the series architecture or output voltage compatibility.
How does this charger protect the battery? It employs multi-stage charging (Float/Boost). The charger monitors the battery state and automatically switches between these modes to keep the battery fully charged without causing overcharging, which can lead to electrolyte loss and plate degradation.
Can I connect multiple chargers in parallel? Generally, yes, if the chargers are designed for parallel operation (load sharing). However, ensure all chargers are set to the exact same output voltage levels to avoid circulating currents between the units.
What should I do if the “Charger Fail” alarm is active? This alarm usually signals an internal fault, loss of AC input, or a blown DC output fuse. Verify that AC power is present at the input terminals and check the output fuse status. If these are normal, the unit may have internal circuitry failure.
🔄 Recommended Similar Models
-
Woodward SEG BL20-200
-
Woodward SEG BL10-400
-
Woodward SEG BL5-400
-
Mastervolt Industrial Battery Charger
-
SENS NRG Battery Charger
-
LaMarche A12B Series
-
Statpower Industrial Battery Charger
-
Victron Energy Centaur Series
-
Woodward SEG BL-Series Legacy Chargers
-
GNB Industrial Battery Charger
-
Exide Industrial Charger
-
ABB Industrial Battery Charging Unit
-
EnerSys Charger Series
-
Phoenix Contact QUINT DC-UPS (For monitoring)
-
Chloride Industrial Battery Charger
