250kW resistive AC load bank

Engineered for precision and resilience, it delivers unmatched power capacity in a robust, IP55-rated enclosure.

Applications：

Generator testing & commissioning
Data center UPS / PDU testing
Renewable energy (solar / wind / BESS)
Industrial power systems

Schneider Eletric Authorise:

Prisma E Standardized low-voltage sub switchboard Technology and Business Partner

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

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Product Introduction

Meet the powerhouse for your largest tests: the 250kW Resistive AC Load Bank. Engineered for precision and resilience, it delivers unmatched power capacity in a robust, IP55-rated enclosure.This product is stackable; features inlet and outlet temperature displays; uses a 400A European standard quick-connect port for the main circuit of the load; the enclosure is suitable for outdoor use with an IP55 protection rating; and the louvers are removable.

Control it manually or remotely via PC software for ultimate flexibility. With integrated casters and forklift pockets, this high-capacity unit moves as efficiently as it performs. Built to withstand demanding environments, it's the reliable core of your critical testing setup.

Product Specifications

Model No.	B250L
Country of origin	China
Max capacity	250kW
Load step Tested voltage	1+2+2+5+10+10+20+50+50+100 kW 400Vac
Frequency	50/60Hz.
Phases	3
Wires(Star connection)	4
Load step resolution	1kW
Voltage Tolerance (Short Term Operation)	+5%
Load Element Tolerance	± 5%
Insulation Test	500Vac
Load Connections	200A cam lock quick connector
Protection Control voltage	Thermal emergency cut out
	Air flow switch
	Control and mains circuit overload protection
	Emergency stop
	Optional 400Vac
Cooling method	Air forced cooling
Airflow volume(Approx.)	70 CBM/KW/Hour
Airflow direction	Horizontal
Load switching contactor type	AC 3 pole contactors
Rated maximum ambient temp. operation	+50°C / +122°F
Rated minimum ambient temp. operation	-20°C / -4°F
Altitude rating	<2000m [m.a.s.l.]
Ccontrol chamber IP rating Portabality	IP 55 4 universal casters& 2 folklift pockets
Stackable	Yes
Enclosure dimensions
Width(mm)	1478
Depth(mm)	1160
Height(mm)	1100
Weight(KG)	295
Load bank control system
Manual control	Push buttons
PLC control	Remote PC control with software Nexus-1
Power deration with voltage applied.
400V	250 kW
380V	225kW

More Product Details

CONTROL PANEL with digital meter/load step buttons/ indicators / Emergency stop etc

FINNED RESISTORS, stainles heating tube, core withstand temperature 1200°C

POWER LOCK (quick connectors), IP 67 protection. rated 400Amps. match with 120mmsq cross-section copper cables

CONTACTORS for load switching, FUSES for load protection. All load steps are in parallel connections by copper bars.

INDUSTRIAL COOLING BLOWERS, Equiped with a single blower at 650 diameter with 17000CMB/H air volume. motor size:2.2kW.

EXHAUST LOUVERS are in stainless material. to avoid of high-temp damage. meanwhile a protective mesh nets mounted inside.

What is the typical delivery time for the product?

4 weeks

Warranty service？

3 years

Do you provide installation and testing support?

Yes, Rata provides on-site testing services, including equipment installation, configuration, and data logging.

What types of load cells are available?

Rata offers a wide range of load cells, from portable to containerized, including resistive, inductive/reactive, and customized solutions.

What protective measures does Rata take for its load cell in harsh environments?

The surface is coated with a high-corrosion-resistant coating; it uses an air inlet with a filter to prevent dust accumulation; and the internal electrical cabinet is equipped with moisture-proof measures.

Can I control my load cell using my computer?

Yes, we have a variety of PC software solutions to meet diverse needs.

Our shipping methods?

FOB Shanghai Port (sea freight) and Chengdu Airport (air freight), or you can customize your shipping method.

How many countries have we exported to?

We have exported to more than 80 countries worldwide.

Why choose us?

We have ISO and CE certifications and are authorized factories of Siemens and Schneider Electric.

What is the actual usable power of this load bank? Will there be derating?

At a rated voltage of 400Vac, this load bank can providea full power output of 250kW.When the system voltage is 380Vac, the power will automatically derating to 225kW.

Is this load bank suitable for long-term continuous operation? Is it safe?

Yes, the equipment is designed for long-term operation and is equipped with multiple safety protections,including: over-temperature emergency cut-off; airflow detection protection; control and main circuit overload protection; emergency stop button.

Is the cooling capacity sufficient? Can it still be used normally in high-temperature environments?

The load bank adopts a forced air cooling + horizontal air duct design, with an airflow of approximately 70 CBM/kW/Hour, and is equipped with: a 650 mm diameter industrial-grade high-power fan; stainless steel louvered exhaust outlets to prevent high-temperature deformation.

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