500A 130V DC Resistive Load Bank

The RTDCS65L is a high-performance 500A, 130V DC resistive load bank designed for reliable power supply and battery testing. It offers precise 1A step resolution and a low resistance error of 1.5%–±3%. Featuring robust Ni-Cr alloy resistors, forced-air cooling, and multiple safety protections (emergency stop, thermal cut-out), it ensures stable operation from -15°C to +50°C. With both manual and PC/PLC remote control, it is ideal for R&D, production, and maintenance of DC power systems.

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

Built for rigorous testing, the RTDCS65L provides a stable, adjustable load up to 500A at 130V DC. Its high-precision 8020 Ni-Cr alloy resistors and 1A step resolution ensure accurate simulations. The unit features robust forced-air cooling, IP23-rated enclosure, and comprehensive safety protections including emergency stop and thermal cut-out. Offering both local manual control and PC/PLC remote operation, this reliable load bank is essential for validating power supplies, batteries, and energy systems in demanding environments.

Estimated cabinet enclosure (mm)

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.

Front View

Side View

Back View

Main Parameters

Model No.	RTDCS65L
Country of origin	China
Rated Testing Voltage	130V DC
Rated Current	500A
Load step resolution	1A
*Estimated Width(mm)Depth(mm)Height(mm)*	780500 880mm
Estimated weight	115kg
Other information
Load Connections	Quick connectors
Protection	Thermal emergency cut out
	Fan switch
	Fan overload protection
	Emergency stop
Airflow direction	Horizontal air forced cooling
Fan type	Airfoil axial fan
Load switching contactor type	DC contactors
Rated minimum / maximum ambient temp. operation	-15°C to +50°C
Altitude rating	≤2000 [m.a.s.l]
Control chamber IP rating	IP 23 Indoor
Enclosure material	Cold rolled stainless steel plate with painting.
Enclosure color	RAL 7035
Resistor material	finned resistor, AISI304/stamped elements
Resistor material	8020 Ni-Cr alloy
Resistance error	1.5%~± 3%
Portability	Casters , lifting rings
Load bank control system
Manual control + PC remote	Press buttons or touch screen + PLC remote

FAQ

What are the main testing scenarios for this 130V DC/500A DC load bank?

This DC resistive load bank is mainly used for discharging and performance testing of low-voltage, high-current DC systems. Typical applications include: full-load discharge testing of battery packs; DC-side testing of energy storage systems; verification of DC power supplies and battery charging/discharging systems; and stability testing of electrical equipment or DC buses. (Especially suitable for test platforms requiring controllable and repeatable DC load conditions.)

Why is the "current resolution" of a DC load bank more important than its power parameter?

In DC system testing (such as battery packs, PCS, and DC buses), current is the core control variable.
This model supports 1A load step resolution, meaning it can:
(1) accurately simulate different charge and discharge conditions;
(2) achieve fine-grained aging tests;
(3) avoid impacting the battery or power supply;
(4) Compared to "maximum power," current resolution better reflects the testing accuracy and professionalism of the DC load bank.

Why does this DC load bank use a dedicated DC contactor instead of a general-purpose contactor?

When a DC system is disconnected, the arc is not easily extinguished by crossing zero naturally. If a regular AC contactor is used, the following problems may occur: (1) contact erosion; (2) adhesion failure; (3) safety hazards of disconnection failure.
Therefore, this load cell uses a dedicated DC contactor to ensure safe disconnection under 130V/500A conditions.

What is the significance of a 1A load regulation accuracy for actual testing?

A 1A current step means that:
(1) different discharge rates can be accurately simulated; (2) load can be applied smoothly, avoiding impact on the battery or power supply;
(3) capacity testing, curve analysis, and consistency comparison can be performed;
This is especially important for battery research and development and energy storage system debugging.

What safety protection measures does the equipment have?

This DC load cell integrates multiple safety protections, including:
(1) Emergency over-temperature cutoff;
(2) Fan operation detection;
(3) Fan overload protection;
(4) Emergency stop button (E-Stop)

Typical product delivery time?

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.

How many countries have you exported to?

We export to over 80 countries worldwide.

Why choose us?

We have ISO、CE certification and are Authorized factories for Siemens and Schneider Electric brands.

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