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Portable All-in-One 3 Phase Relay Protection Tester with Industrial Touch Screen Provide Other Electrical Tester
US$4,000.00-6,710.00
1 Piece

Product specifications

Three-phase

Product profile

Customization

Available

After-sales Service

Provided

Working Power Supply

AC110V±10%

Model NO.

NRJB300

Frequency Range

0--1000Hz

Harmonic Number

2--20

Phase

0--360°

Single-Phase Current Output (RMS Value)

0-30A/Phase, Accuracy: 0.2% ±5mA

Three-Phase Parallel Output (RMS Value)

0-90A/Three Parallel Outputs with The Same Phase

Maximum Output Power Per Phase

300va

Transport Package

Carton

Trademark

Refine On

Origin

China

HS Code

9030820000

Production Capacity

100 Set Per Week

Key features

Industrial Touch Screen: 8.4-inch TFT true color display with Windows XP interface for intuitive operation.
Comprehensive Testing: Tests traditional relays, microcomputer protections, and transformer differential protection.
High Power Output: Three-phase parallel output up to 90A with 800VA max power per phase.
DC Auxiliary Output: Independent DC voltage source: 110V (1A) and 220V (0.6A) for relay testing.
Advanced DSP+FPGA: 16-bit DAC output generating 2000 high-density sine waves per week for high fidelity.
Flexible Connectivity: USB interface for direct PC connection; optional laptop support with same software.
Self-Calibration: Software self-calibration function eliminates need for manual potentiometer adjustment.

Company profile

Refine On (Hebei) Electric Power Technology Co., Ltd.
R&D Capabilities100% Finished Products InspectionODM ServicesProduction Process Visualization
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 year CertifiedNearest Port: Tianjin PortAverage Response Time: ≤1.72h

AI-Powered supplier vetting

SummaryThe supplier is a technology-driven enterprise integrating R&D, production, sales, and after-sales service, offering electrical testing equipment, specialized tools, meters, and related products. It reports new products within the past year, ODM capability, broad customization options, and OEM service for well-known brands. Overseas service is stated for Vietnam and Russia, including installation, debugging, maintenance, repair, and training, but the supplier has no overseas warehouses, showrooms, agents, or branches and has not participated in offline trade shows. Quality assurance and raw-material traceability are reported, while several service-control procedures lack written records. Financial information is inconsistent and insufficient for assessment.
Supplier typeThe supplier identifies as a technology-driven enterprise integrating R&D, production, sales, and after-sales service. Its listed products include electrical tools, intelligent meters, energy measurement equipment, fault-location and cable-testing equipment, and specialized instruments, indicating a manufacturer-oriented technology supplier.
After-Sales capabilityThe supplier states that it provides after-sales service and offers installation, debugging, maintenance, repair, and training in Vietnam and Russia. However, it has no overseas warehouse, showroom, agent, or branch, has not participated in offline trade shows, and its complaint-handling and service corrective-action procedures have no written records, limiting evidence of formal service execution controls.
R&D capabilityThe supplier reports R&D capability, new products within the past year, ODM services, and integration of R&D with production and after-sales service. It does not have an available SDK, but the available evidence still explicitly supports product-development capability.
Production capacityThe supplier is described as integrating production with R&D, sales, and after-sales service, and it lists a broad product range including tools, meters, and testing equipment. Quality assurance and raw-material traceability are reported, but the slices do not provide production capacity, factory scale, or output data.
Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM service, providing direct evidence of broad customization capability.

Product Q&A

Q:Can this tester be used for transformer differential protection?
A:
Yes, it can test various modern microcomputer protections, especially transformer differential protection and standby automatic switching devices.
Q:What is the maximum output power for three-phase parallel current?
A:
The maximum output power of three-phase parallel current is 800VA, with a maximum output of 90A.
Q:Does the device support DC output for relay testing?
A:
Yes, it has an independent dedicated DC auxiliary voltage source output of 110V (1A) and 220V (0.6A).
Q:What operating system does the tester use?
A:
It uses a classic Windows XP operation interface with a recovery function to avoid system crashes.
Q:Is customization available for this product?
A:
Yes, customization options include customization from samples, designs, full customization, minor customization, and flexible customization.

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