This 48V DC IP20 portable resistive load bank is built for battery and DC power source discharge testing. Featuring harmonic-free pure resistive loading, it supports step-adjustable power and long unattended tests. The optional data logger exports test curves and data, widely used for telecom battery maintenance, capacity inspection and site acceptance.
Core Pain Points We Solve
❌Pain point: Electronic loads introduce harmonic distortion, failing to replicate the actual resistive operating characteristics of telecom DC power systems.
✅ Solution: Adopts all-resistive topology with zero harmonic distortion, delivering authentic steady-state load simulation for field acceptance tests.
❌Pain point: Conventional test sets are bulky and difficult to deploy across distributed telecom rooms for periodic battery maintenance.
✅ Solution: Compact portable chassis with IP20 rating, optimized for rapid transportation and quick commissioning at multiple field sites.
❌Pain point: Manual data logging leads to inconsistent records, which cannot meet traceability requirements for formal project acceptance.
✅ Solution: Optional data acquisition module captures real-time electrical parameters; test logs and discharge curves can be exported via USB for compliant reporting.
❌Pain point: Extended unattended discharge tests carry thermal and overload hazards without comprehensive protection interlocks.
✅ Solution: Integrated multi-tier protection logic including overtemperature, overload and emergency stop, mitigating risks during long-duration capacity tests.
❌Pain point: Fixed-load testers lack flexible power segmentation to match diverse capacity grading and aging test specifications.
✅ Solution: Stepwise resistive bank configuration supports adjustable loading levels to adapt to different battery strings and test protocols.
Typical Application Scenarios
Telecom 48V battery pack capacity test and periodic maintenance discharge
DC power supply and rectifier cabinet acceptance inspection
Battery aging test and factory outgoing inspection
UPS backup battery group commissioning test
DC power source simulation verification for communication equipment
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RFQ:
Q1: What is the protection rating of this 48V DC load bank?
A1: IP20, designed for indoor use in laboratories, telecom rooms and equipment rooms.
Q2: Does it produce harmonics during discharge testing?
A2: No. It adopts pure resistive load without harmonic distortion.
Q3: Can it record test data and export curves for acceptance?
A3: Yes. An optional data logger captures real-time voltage, current and capacity, exportable via USB.
Q4: Is the load adjustable?
A4: Yes, it supports step-by-step load adjustment for different test requirements.
Q5: Can it run unattended long-duration discharge tests?
A5: Yes. Efficient forced air cooling and multi-protection system support continuous unattended testing.
Q6: What safety protections are equipped?
A6: Over-temperature protection, overload protection and emergency stop function.
Q7: Can this machine be customized?
A7: Yes, we support customization of power, voltage and special functions.
Q8: What types of batteries is this load bank suitable for?
A8: It is compatible with lead-acid batteries commonly deployed in telecom rooms, including valve-regulated sealed lead-acid (VRLA) batteries.
Q9: Does this tester require an external auxiliary power supply?
A9: No. It is powered by the battery or DC source under test, no separate AC input is required.
Q10: Can it automatically stop discharge when the battery reaches the preset cut-off voltage?
A10: Yes. It supports under-voltage cutoff setting to prevent over-discharge and protect the battery string.
Q11: What is the cooling method?
A11: Forced air cooling with high-speed fans, designed for stable heat dissipation during long discharge cycles.
Q12: Is it possible to run multiple units in parallel for higher discharge current?
A12: Yes, parallel operation is available upon request for higher-power test scenarios.
Q13: Do you provide calibration service?
A13: We support factory calibration before delivery; periodic annual recalibration is recommended to maintain measuring precision.
Q14: What documents will be delivered together with the machine?
A14: English operation manual, wiring diagram, test certificate and packing list are supplied.
