This RTLBS50L AC resistive load bank is a high-performance and high-reliability AC testing device.It is specially developed to meet the performance testing, capacity verification and maintenance demands of various AC power systems, including generator sets, UPS, inverters, transformers and other equipment.
Product Introduction
The Rata AC 50kW 480V resistive load bank offers these core advantages:
RTLBS50L is a high-performance 50kW AC resistive load bank specifically designed for 480VAC/60Hz power systems.Adopting high-quality 8020 nichrome alloy resistors and 6 sets of high-air-volume axial flow fans, the unit delivers outstanding heat dissipation and reliable continuous operation.It features core advantages including a fine load step resolution of 1kW and overall system accuracy of ±3%. Equipped with an intuitive HMI touchscreen and an optional PLC remote control system, it enables real-time monitoring and data analysis of power parameters.
Supported by comprehensive safety protection functions and a mobile caster design, it serves as an accurate, safe and intelligent testing solution for generator set performance verification, data center UPS testing and power capacity assessment.
Structure drawing
Key Features and Advantages
Key details
Main Parameters
| Model No. | RTLBS50L |
| Country of origin | China |
| Rated testing voltage | 480Vac |
| Control voltage (Auxiliary power supply) | 120V- 280V 1Ph |
| Frequency | 60Hz |
| Phases & Wires | 3P4W |
| Load step resolution | 1kW |
| Active load steps (kW) | 1kw+2kw*2+5kw+10kw*2pcs+20kw |
| Estimated Length*Width*Height(mm) | 731*657*1034mm |
| Fans Nos.& Airflow volume | 6* 410CFM/H |
| Estimated Weight (kg) | 220kg |
| Other information | |
| Whole machine accuracy | ±3% |
| Voltage Tolerance (Short Term Operation) | ±5% |
| Load Element Tolerance | ≤+2.5% |
| Load Connections | Copper terminal |
| Protection | Thermal emergency cut out |
| Air flow switch | |
| Fan overload protection | |
| Emergency stop | |
| Airflow direction | Horizontal air forced cooling |
| Fan type | Airfoil axial fan |
| Load switching contactor type | AC contactors |
| Rated maximum/minimum ambient temp. operation | +50°C / -20°C |
| Altitude rating | ≤2000 [m.a.s.l] |
| Control chamber IP rating | IP 23 indoor |
| Enclosure material | Cold rolled steel plate with painting. |
| Enclosure color | RAL 7035 or customized |
| Portability | 4 Casters |
| Certificates | ISO9001:2015,ISO14001:2015,ISO45001:2018,CE |
| Duty cycle | Continuous |
| Resistor | |
| Resistor material | finned resistor, AISI304/stamped elements |
| 8020 Ni-Cr alloy | |
| Stainless steel tube | filled with magnesium oxide powder |
| Insulation Test voltage | 2000 Vac for 1min |
| Withstand temperature | About 800℃ |
| Resistance error | ± 3% |
| Main parts brands | |
| Main parts brands | Contactor: Schneider or equivalent Relay: CHINT or equivalent Fuse: Delixi or equivalent Emergency stop: Schneider |
| Load bank control system 1 | |
| Manual control | HMI touch screen |
| Load bank control system 2 (optional) | |
| PLC control | Remote PC control with patented software Nexus-1 |
| Support printing | Table saved by Excel,curve saved by word. |
| Remote computer automatic control | Mod Bus TCP or RS485 communication protocol |
| Control software in English version(commissioning well before sent to user) | |
| Siemens PLC system | |
| Function include load data monitor, acquisition, curve, chart, load data save and printing. | |
| Quality warranty | |
| 12 months start from the day receiving the goods at your side. | |
| Services | |
| 7×24 hours service(subject to time zone difference) | |
| Online meeting available anytime. | |
| Technician guidance online freely, technician going abroad in charged(negotiable). | |
| Documents providing | |
| Factory report. | |
| Operation and maintenance instructions. | |
| Structure diagrams & Electrical schematic diagram after deposit. | |
FAQ