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TUNKIA TD3900 High Precision Three-phase multifunction Power Energy Standard Source for standard energy meter calibration
US$1,000.00-70,000.00
1 Set
Product profile
Customization
AvailableAfter-sales Service
Life TimeWarranty
12 Months Excellent for ServiceModel NO.
TD3900Application
Electrical CalibrationPower
ElectricityVoltage Output
576 VCurrent Output
120 ALCD Display
With LCD DisplayCustomized
Non-CustomizedAccuracy
Class 0.02Short-term Stability
30 ppm/2 min (I ≥ 20mA)Maximum Voltage Output
576 VMaximum Current Output
120 AHarmonic Output/Measurement
2nd to 127thAdjustable Amplitude
0 to 40%Adjustable Phase
0.0° to 359.9°Transport Package
Package for ExportingTrademark
TUNKIAOrigin
ChinaProduction Capacity
100Key features
High Precision Accuracy: Class 0.02 accuracy level with 30ppm/2min short-term stability for reliable calibration.
Wide Voltage Range: Outputs 6V to 576V with a note that a wider range can be customized.
High Current Output: Maximum current output up to 120A with minimum output as low as 0.2mA.
Harmonic Analysis: Supports 2nd to 127th harmonic output with adjustable amplitude (0-40%) and phase.
Comprehensive Software: Enables automatic calibration, verification, and report generation for single/three-phase meters.
Mobile Control Console: Features a large-size HD LCD touch screen for manual detection and value observation.
Lifetime Warranty: Provides life-time after-sales service coverage for the product.
OEM/ODM Services: Manufacturer offers both OEM and ODM services with 120 R&D engineers.
Company profile

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2021-10-11 CertifiedNearest Port: Changsha PortAverage Response Time: ≤15h CertifiedTerms of Payment: LC, T/T, D/P, etc.
AI-Powered supplier vetting
SummaryTunkia Co., Ltd. is identified as a China-based manufacturer established in 2006, with 363 employees and an 8,000 m² manufacturing plant. Its stated products include magnetic and electrical measurement equipment, gaussmeters, and multifunction calibrators. The supplier reports ISO9001, ISO14001, and ISO45001 certifications, nine production lines, 120 years of combined R&D engineer experience, and 11–20 quality-control staff. It serves domestic and overseas markets, with exports representing 21%–30% of sales and reported one-month lead times in both off-peak and peak seasons. Evidence supports manufacturing scale, certification coverage, and technical capability. However, the provided information does not sufficiently establish after-sales service, financial credibility, customization capability, or a broad customer track record.
Supplier typeThe supplier is explicitly classified as a manufacturer, while the associated company information also describes the company nature as a trading company. Its 8,000 m² plant and manufacturing-related business activities support that it operates manufacturing capabilities, although the supplied classifications are not fully consistent.
CertificationsThe supplier reports ISO9001:2015, ISO14001:2015, and ISO45001:2016 management-system certificates, plus other unspecified certifications. This is explicit evidence of multiple quality, environmental, and occupational-health-and-safety certifications.
R&D capabilityThe supplier’s product scope includes magnetic measurement, electrical measurement, gaussmeters, and multifunction calibrators, and it reports 120 years of total R&D engineer experience. These details support technical and product-development capability, although no patent, new-product, or R&D investment data is provided.
Production capacityThe supplier reports an 8,000 m² manufacturing plant, 363 employees, nine production lines, and one-month lead times in both off-peak and peak seasons. These figures provide explicit evidence of established production capacity and stated delivery capability.
Product Q&A
Q:What is the accuracy level of the TD3900?
A:
The device has a power/electric energy output accuracy level of Class 0.02.
Q:What is the maximum voltage and current output?
A:
Maximum voltage is 576V and maximum current is 120A.
Q:Can the voltage range be customized?
A:
Yes, the product description notes that a wider range of voltage can be customized.
Q:What is the warranty period?
A:
The product comes with a 12-month warranty and life-time after-sales service.
Q:Does the device support harmonic output?
A:
Yes, it supports 2nd to 127th harmonics with adjustable amplitude and phase.
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Tunkia Co., Ltd.
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