An engineer from Japan using the KFA310 mini protection relay tester to test Mitsubishi protection devices and circuit breakers in the field.
Japan | Product: KFA310
A customer from Trinidad and Tobago shared photos on LinkedIn while using the KF86P for relay testing, along with positive feedback in the comments about its performance.
Trinidad and Tobago | Product: KF86P
In May 2025, the customer purchased a KFA310 mini protection relay tester for energy meter calibration and was impressed by its light weight and portability.
They plan to purchase another unit in October 2025 for on-site calibration work.
Italy | Product: KFA310
An engineer from Sweden shared this photo taken during protection relay testing at a 130/20 kV substation.
Sweden | Product: KF86P
An engineer from Poland shared this photo while performing protection relay testing with the KFA320.
Poland | Product: KFA320
A customer from Romania shared a photo from the field along with their feedback:“Operating the KFA310 is pretty straightforward and it works as expected.”
Romania | Product: KFA310
An engineer from the USA showcased live testing of Schneider protection devices using the KFA320 mini protection relay tester during the 2025 Georgia Tech Protective Relaying Conference.
USA | Product: KFA320
An electric service company in the UAE demonstrated KINGSINE’s protective relay testers at a technical institute. The engineers praised its ease of use and strong performance during on-site testing.
UAE | Product: KFA310, KF86P
An Italian engineer bought his first K68i in 2012 and used it flawlessly for more than a decade. Even after helping him through a major power crisis, his “old friend” remained reliable.
In 2024, he renewed its life with a new amplifier and front panel—and soon after, added a KFA310 to his toolkit.
Today, he uses the KFA310 for daily work and keeps the K68i for teaching.
Italy | Product: K68i, KFA310
A customer from South Africa has been using their first K3030i protection relay test set for over 15 years, and it remains in active service today.
In 2025, they purchased a new K3163i, reaffirming their trust in KINGSINE’s quality and long-term reliability.
South Africa | Product: K3030i, K3163i
A switchgear manufacturer in Europe purchased two KFA310 units in May 2025 to support testing during their manufacturing process.
After working with the equipment for a few months, they placed another order for two more units in August.
And in October, they reached out again to order one more KFA310, sharing that the decision was "based on positive experience."
Estonia | Product: KFA310
A customer from the UK purchased two KFA310 units in August 2025 for use in meter calibration.
Based on their need to control the device via the upper computer, KINGSINE customized the software to meet their requirements.
The customer appreciated the team’s timely support and professional communication throughout the process.
UK | Product: KFA310
A customer from Poland purchased two KFA310 units in June 2024, and later returned in September 2025 to buy two KFA320 with IEC61850 function after a positive experience.
Poland | Product: KFA310, KFA320
Kazakhstani customer’s feedback on KFA310:“Its compact design and intuitive interface make on-site testing remarkably efficient.”
Kazakhstan | Product: KFA310
An engineer from the Philippines shared this photo while using the KF86P universal protection relay test kit to test an ABB RMU on-site.
Philippines | Product: KF86P
An engineer from South Africa performing on-site relay testing with the KF86P.
South Africa | Product: KF86P
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