- 1Resistor elements
- 2Step contactors
- 3Control display
- 4DC terminals
DC Load Bank
Constant-current discharge testing for batteries, and load testing for rectifiers, UPS DC buses and storage systems. 24 – 1,000 V DC, 5 kW to 1 MW.
Know What Your Batteries Really Hold
A battery can show full voltage and still deliver a fraction of its rated runtime. The only way to know is a discharge test: draw a constant current for the rated time and watch the voltage. A DC load bank does that automatically, holding the current steady and stopping at the end voltage you set, while recording every reading. The same unit tests chargers, rectifiers and DC buses.
- Constant-current or constant-power control
- Automatic stop at end voltage
- Cell and string voltage logging (optional)
- Polarity protection
- Portable or permanently installed
- Telecom, utility, UPS and storage ranges
DC Load Bank in plain words
What it does
A load bank for direct current: it discharges batteries at a controlled rate to measure real capacity, and tests rectifiers, UPS DC buses and solar or storage systems.
Pick it when
- You need to prove battery capacity (discharge test)
- You test rectifiers, chargers or DC plants
- You commission battery energy storage or DC buses
Better choice if…
You are testing an AC generator or UPS output
See the Portable Resistive →What's Included
- Resistive elements with step contactors
- DC metering and shunt
- Fused DC input with polarity protection
- Over-temperature, loss-of-airflow, fan-motor overload and control-power-loss protection; element fusing
- Control display
- +Cell-voltage monitoring harness
- +Report software
- +High-voltage (1,000 V) storage-system models
Full Specifications
| Parameter | Value |
|---|---|
| Voltage | 24 – 1,000 V DC (ranges by model) |
| Rating | 5 kW – 1 MW |
| Control | Constant current or constant power, end-voltage cutoff |
| Protection | Reverse-polarity, over-temperature, airflow |
| Logging | Time, current, voltage; cell voltages optional |
Built to Standard
Where It's Used
- Utility substation battery testing
- Telecom DC plants
- UPS battery strings
- Battery energy storage commissioning
- Rail and transit DC systems
From design and specification through factory testing, commissioning, and ongoing maintenance — CANDRON delivers at every phase.
- Engineering drawings and coordination studies
- Factory acceptance testing (FAT) with full reports
- Site commissioning and protection settings
- Spare parts, training, and maintenance support
Common Questions
Usually the battery’s rated runtime — often one to eight hours. The load bank holds the current steady and stops automatically at the end voltage.
Ready to Spec
Your Project?
Our engineering team responds with specs, lead times, and pricing the same day. Tell us what you need:
- Battery or DC system voltage
- Discharge current or kW
- Portable or permanent
- Logging needs
Send us your project details and we'll respond with a price, lead time, and any clarifying questions — typically within a few hours.
Request a Quote →Or call +1 (647) 616-2595