300KW 400V resistive AC load bank For Generator Testing
This load bank is specially designed for 3-phase 4-wire (3P4W) power systems, with a rated test voltage of 400Vac and an operating frequency of 50Hz.
As a high-performance test load, it provides accurate and reliable load testing solutions for generator sets, UPS power supplies and other AC power equipment.
5.0
Warranty time:
3 years
Delivery time:
4 weeks
ISO Certification:
ISO9001/ISO14001
Brand:
RATA
Factory Price:
Negotiate
Supply Ability:
200,000 Piece/Pieces per Month
Port:
Shanghai and Guangzhou are both available
Payment Terms:
L/C,Cash,Western Union,T/T, Paypal
Min.Order Quantity:
1 pcs
ODM & OEM:
Available
Certification:
CE 60204 Standard
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Product Introduction
The Rata 300KW 400V resistive AC load bank offers these core advantages:
This load bank adopts an advanced control system and high-quality resistive components, supporting multi-level load adjustment from 1kW to 300kW with a minimum step resolution of 1kW.
The device supports not only local manual control, but also is equipped with an intelligent control system based on Siemens PLC, enabling remote automated testing via PC software.
Built with a robust cold-rolled steel shell and IP54 outdoor protection design, it can operate stably under various complex working conditions within a wide temperature range of -20°C to +50°C and at altitudes below 2500 meters.
Key Features and Advantages
Precise load control and multi-step regulation
Excellent heat dissipation and protection design
High-quality resistive components
Intelligent dual control system
Rugged and durable structural design
Engineering drawing
This info given is our standard load bank features. we are constantly looking to improve our design.
We reserve the right to change with prior notice. The finished design might slightly vary from this given TDS.
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Key details
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Main Parameters
| Model No. | RTES500L |
| Country of origin | China |
| Rated testing voltage | 400Vac |
| Control voltage (Auxiliary power supply) | 230Vac |
| Frequency | 50Hz. |
| Phases & Wires | 3P4W |
| Load step resolution | 1kW |
| Active load steps (kW) | 1kW+2kW+2kW+5kW+10kW+10kW+20kW+50kW+100kW*2 |
| Estimated Width*Depth*Height(mm) | 1600*1350*1250mm (there might be 150mm-200mm difference) |
| Fans Nos.& Airflow volume | 1* 20000CFM/H |
| Estimated Weight (kg) | 560kgs |
| Other information | |
| Voltage Tolerance (Short Term Operation) | +5% |
| Load Element Tolerance | ≤+2.5% |
| Load Connections | Copper busbars |
| Protection | Thermal emergency cut out |
| Air flow switch | |
| Fan overload protection | |
| Emergency stop | |
| Ground lead | |
| 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 | ≤2500 [m.a.s.l] |
| Control chamber IP rating | IP 54 outdoor |
| Enclosure material | Cold rolled steel plate with painting. |
| Enclosure color | RAL 7035 |
| Portability | Forklift holes |
| Certificates | ISO9001:2015,ISO14001:2015,ISO45001:2018,CE |
| Duty cycle | Continuous |
| Resistor | |
| Resistor material | finned resistor, 8020 Ni-Cr alloy |
| Stainless steel tube | filled with magnesium oxide powder |
| Insulation impedance | DC1000V 20MΩ above |
| Insulation Test voltage | 2000 Vac for 1min |
| Withstand temperature | 800-1000℃ |
| Resistance error | 1.5%~± 3% |
| Main parts brands | |
| Main parts brands | Contactor: Schneider or equivalent Chinese brand Relay: CHINT or equivalent Chinese brand Fuse: CHINT or equivalent Chinese brand PLC: Siemens Fan: Fengmai Main circuit breaker (Schneider) optional Emergency stop: Schneider |
| Load test functions | |
| Real time display content | Current, Voltage, Frequency, Power, Power factor, Electrical performance indicators, System electrical parameter monitoring |
| Load bank control system 1 | |
| Manual control | Press buttons or toggle buttons with electrical meter |
| Load bank control system 2 | |
| PLC control | Remote PC control |
| Support printing | Table saved by Excel,curve saved by word. |
| Remote computer automatic control | Modbus TCP communication protocol |
| Communication interface RJ45 | |
| Control software in English version(commissioning well before sent to user) | |
| Siemens PLC system | |
| Software control system(operation screen showed as page at the bottom). | |
| 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,maybe there is some delay caused by the time difference for different regions. | |
| Online meeting available during the whole order. | |
| Technical guidance via videos or online video freely, technician abroad is charged. (Some visa waiver countries close to China free for big project over 80,000USD order). |
|
| Documents providing | |
| Factory report | |
| Operation and maintenance instructions printed and shipping with goods together. | |
| Electrical schematic diagram and structure diagrams after deposit. | |
FAQ
1
What are the power input specifications of this load bank?
The equipment is specially designed for 3-phase 4-wire (3P4W) systems, with a rated test voltage of 400Vac and a frequency of 50Hz. In addition, the control system requires an independent 230Vac auxiliary power supply.
2
What is the accuracy and range of load adjustment?
The minimum load step resolution of the equipment is 1kW. Combined with different step levels (ranging from 1kW to 100kW), a maximum total load of 300kW can be achieved.
The tolerance of load elements is controlled within ≤±2.5%, and the voltage tolerance for short-term operation is +5%.
3
What is the operating capability of the equipment in extreme environments?
This load bank is designed to adapt to various complex environments. Its rated operating ambient temperature ranges from -20°C to +50°C, and it can operate at an altitude of up to 2500 meters. The control compartment features IP54 outdoor protection grade.
4
How does the heat dissipation system of the load bank work?
The equipment adopts horizontal forced air cooling, equipped with a high-power airfoil axial flow fan with an air volume of 20000 CFM/H.
The system is also fitted with an air flow switch and fan overload protection to ensure reliable operation of the heat dissipation system.
The system is also fitted with an air flow switch and fan overload protection to ensure reliable operation of the heat dissipation system.
5
What safety protection functions does the equipment have?
To ensure safety during testing, the equipment is built with multiple protection mechanisms, including:
thermal emergency cut-off (over-temperature prevention), air flow switch (heat dissipation airflow monitoring), fan overload protection, emergency stop button, and grounding wire.
6
How to realize remote control and data recording of the load bank?
The equipment is equipped with an intelligent control system based on Siemens PLC, supporting connection to PC via RJ45 interface and Modbus TCP protocol.
With the supporting patented Nexus-1 software, users can perform remote automatic control, real-time monitoring of electrical parameters such as current, voltage, frequency and power. Test data can be exported as Excel files or Word curve reports.
7
What are the material and service life of the core resistance elements?
The resistance elements adopt fin-type resistors made of 8020 nickel-chromium alloy, encapsulated in stainless steel tubes filled with magnesium oxide powder.
This structure can withstand high temperatures of 800–1000°C with excellent insulation performance (>20MΩ at DC 1000V). The resistance error is controlled between 1.5% and ±3%, suitable for continuous duty operation.
8
What is the equipment maintenance and after-sales service policy?
Rata provides 7×24-hour online technical support, along with online meetings and free video technical guidance throughout the order cycle.
Factory test reports as well as operation and maintenance manuals are delivered together with the equipment.
9
Typical product delivery time?
4 weeks.
10
Warranty service?
3 years.
11
Do you provide installation and testing support?
Yes, Rata provides on-site testing services, including equipment installation, configuration, and data logging.
12
How many countries have you exported to?
We export to over 80 countries worldwide.
13
Why choose us?
We have ISO、CE certification and are Authorized factories for Siemens and Schneider Electric brands.
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Get in touch with us
just leave your email or phone number in the contact form so we can send you a free quote for our wide range of designs
Contacts: Gong Zhenhua
E-mail: gongzhenhua@rata.top
Phone/ WhatsApp: 0086-13890270038
Address: Hongyu Road East, Jinshan Industrial Park, Luojiang Disctrict, Deyang. China
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