━━━━━━━━━━━━━━━━━━━━━━━━━━ 　▼　Epsilon Communication　【2025/12/9】（Issue 49）　▼ ━━━━━━━━━━━━━━━━━━━━━━━━━━ Thank you for your continued support. This is Japan Kernel System Co., Ltd. While enjoying warm Japanese tea at my desk, I am sending you Epsilon Communication Issue 49. ─▼──────────────────────────────────── Table of Contents 【1】 Introduction to Cluster Failure Detection Function 【2】 Measurement of I-V Curves for High-Efficiency Solar Cells (Half-Cut Cells and N-Type) 【3】 Editor's Note ─▲──────────────────────────────────── You can view the continuation on our company website.

Thank you for your continued support. This is Japan Kernel System Co., Ltd. From Osaka, which feels a bit lonely after the conclusion of the Osaka-Kansai Expo, we are sending you the 47th issue of Epsilon Communication. ─▼──────────────────────────────────── Table of Contents [1] DC Simulation Power Supply for Perovskite Solar Cells [2] Case Study of Outdoor Exposure Measurement System for Solar Cells with Data Transmission Function [3] Editor's Note ─▲─────────────────────────────────── You can view the continuation on our company website.

In recent years, there have been reports of cases where high-efficiency solar cells (such as N-type and half-cut cells) cannot measure I-V curves using competitor products or the old Epsilon 1000 (PVA14300). However, measurement is possible with the current Epsilon 1000 (PVA14300R) and Epsilon 1500 (PVA18340). Both the current and old models of Epsilon have a built-in overcurrent detection circuit, which prevents equipment failure by cutting off the current and stopping I-V curve measurement if the measurable current exceeds 30 [A] (when overcurrent is detected). High-efficiency solar cells tend to have a large inrush current flowing into the Epsilon, leading to a higher frequency of measurement stoppages due to overcurrent detection with the old Epsilon. Even if the catalog value of the solar cell is around 15 [A], the actual output current can momentarily exceed 30 [A] significantly. The current Epsilon is equipped with an inrush current prevention circuit that performs gradual short-circuit processing. This suppresses the occurrence of overcurrent during short circuits, making measurement possible even when the capacitive component of the PV is large. Measurement is also possible with the Gamma series and Delta.

Thank you for your continued support. This is Nippon Kernel System Co., Ltd. The person in charge of the newsletter, who is relieved after overcoming the challenges of preparing school lunches during summer vacation, is sending you Epsilon News No. 46. ─▼──────────────────────────────────── Table of Contents [1] The MPPT electronic load device is being renewed [2] Announcement of the Epsilon measurement software version upgrade [3] Editor's Note ─▲──────────────────────────────────── You can read more on our company website.

This device, which can apply loads equivalent to actual operation on solar cells, is widely used for research and development purposes. To accommodate the latest technologies such as perovskite solar cells, we are preparing to expand the maximum input power and add new control methods. A renewal is scheduled for October 2025. Main renewal contents: - Simplified I-V curve measurement capability - Increase in main unit capacity from 300 [W] to 500 [W] - Addition of a new MPPT control method We have created a flyer, so please take a look!

Thank you for your continued support. This is Nippon Kernel System Co., Ltd. We are sending you the 45th issue of the Epsilon Newsletter along with information on recommended pavilions for the Osaka-Kansai Expo from our employees. The distribution is later than usual due to last week's summer holiday period. ─▼──────────────────────────────── Table of Contents [1] A new automatic testing system has been completed [2] The catalog for "R Load Device and LC Load Device" has been updated [3] Editor's Note ─▲──────────────────────────────── You can view the continuation on our company website.

We have renewed the product features and applications to make them easier to understand, so please take a look. ーーーーーーーーーー This is a next-generation load device composed solely of passive components (resistors, reactors, capacitors) that allows for the setting of active/reactive power (leading/lagging). By connecting a computer software to a power meter, constant power control is possible even when the voltage changes. In evaluating power supplies and measuring instruments (such as power conditioners, UPS, power factor transducers, etc.), tests can be conducted without worrying about control resonance or load responsiveness that may occur when using electronic loads. Additionally, when evaluating power conditioners, using our grid connection testing software in conjunction allows for automatic execution of everything from load adjustment for anti-islanding tests to test implementation and report generation, significantly reducing the man-hours required for testing.

Our (Chuo Ward, Osaka) grid connection testing environment has been renewed! ● Testing capacity has increased! 6 [kW] → 8 [kW] ● Smooth automatic testing is possible using the "Grid Connection Automatic Testing Software." https://www.kernel-sys.co.jp/product/autoTest/ ● A new product, "Testing Script Creation Software," is also available. https://www.kernel-sys.co.jp/product/autoTest/testscript_index.html You can also utilize partial tests, such as "remote output control function testing only" or "standalone operation testing only," on an hourly basis. ▼ For more details ▼ https://www.kernel-sys.co.jp/support/p_pdf/AutomaticTest.pdf Our staff will be present to support the testing. Consultation on test content, contracting for tests, and site visits are also possible, so please feel free to contact us!

Thank you for your continued support. This is Nippon Kernel System Co., Ltd. The person in charge of the newsletter who visited the pandas at Adventure World will send you Epsilon Communication No. 44. ─▼──────────────────────────────── Table of Contents [1] What are surge and undervoltage protection tests? [2] Recent Kernel Updates [3] Editor's Note ─▲────────────────────────────────

Our testing environment for grid connection in Chuo Ward, Osaka City is being renewed! Starting in July, we will operate in a new testing facility, so let us introduce it. ● Testing capacity has increased! 6 [kW] → 8 [kW] ● Smooth automatic testing is possible using the "Grid Connection Automatic Testing Software." https://www.kernel-sys.co.jp/product/autoTest/ ● You can also use our new product, the "Testing Script Creation Software." https://www.kernel-sys.co.jp/product/autoTest/testscript_index.html You can utilize partial tests such as "remote output control function tests only" or "standalone operation tests only" on an hourly basis. ▼ For more details ▼ https://www.kernel-sys.co.jp/support/p_pdf/AutomaticTest.pdf Our staff will be present to support the testing. Consultation on test content, contracting for tests, and facility tours are also available, so please feel free to contact us!

Thank you for your continued support. This is Nippon Kernel System Co., Ltd. Recently, our newsletter manager, who has become friendly with ChatGPT, is sending you the 43rd issue of the Epsilon Newsletter. ─▼──────────────────────────────── Table of Contents [1] We are expanding our equipment for the system interconnection testing environment rental service [2] Announcement of updates to Epsilon "Measurement Software" [3] Editor's Note ─▲────────────────────────────────

Thank you for your continued support. This is Nippon Kernel System Co., Ltd. The person in charge of the newsletter, who is studying power conditioners daily, will send you Epsilon Communication No. 42. ─▼──────────────────────────────────── Table of Contents [1] Testing Environment and Protective Operations of Power Conditioners [2] Case Study on the Introduction of Power Generation Measurement Systems [3] Editor's Note ─▲────────────────────────────────────

━━━━━━━━━━━━━━━━━━━━━━━━━━ 　▼　Epsilon Communication 【2025/4/8】 (Issue 41)　▼ ━━━━━━━━━━━━━━━━━━━━━━━━━━ Thank you for your continued support. This is Japan Kernel System Co., Ltd. The new fiscal year has begun, and we are feeling refreshed! We are sending you the new design of Epsilon Communication, Issue 41. ─▼──────────────────────────────────── Table of Contents 【1】 About the Functions of Power Conditioners 【2】 Update Information for Grid Connection Automatic Testing Software 【3】 Editor's Note ─▲────────────────────────────────────

Thank you very much for your continued support. We regret to inform you that our company will be closed for the year-end and New Year holidays during the following period. We apologize for any inconvenience this may cause and appreciate your understanding and cooperation. From December 28, 2024 (Saturday) to January 5, 2025 (Sunday) * On December 27 (Friday), we will be open until 12:00 PM. * On January 6 (Monday), we will be closed for an internal event and will resume regular business on January 7 (Tuesday). Inquiries received during this period will be addressed sequentially after January 7 (Tuesday), so we kindly ask for your understanding in advance.

Our company has received the Excellence Award at the "2024 (73rd) Electrical Industry Technology Achievement Awards" organized by the Japan Electrical Manufacturers' Association (JEMA). These awards recognize individuals who have contributed to the advancement and development of the electrical industry within JEMA. We believe that receiving this recognition is a result of our continuous product development based on the valuable feedback we receive from our users. We will continue to strive for attractive product development, and we appreciate your continued support.

Thank you very much for your continued support. We regret to inform you that our company will be closed for summer vacation during the following period. We apologize for any inconvenience this may cause and appreciate your understanding and cooperation. From Saturday, August 10, 2024, to Sunday, August 18, 2024. Inquiries received during this period will be addressed sequentially starting from Monday, August 19, so we kindly ask for your understanding in advance.

Thank you very much for your continued support. We regret to inform you that our company will be closed for the year-end and New Year holidays during the following period. We apologize for any inconvenience this may cause and appreciate your understanding and cooperation. From December 29, 2022 (Thursday) to January 4, 2023 (Wednesday) * On December 28 (Wednesday), we will be open until 12:00 PM. * On January 5 (Thursday), we will have an internal event and will resume normal operations from January 6 (Friday). Inquiries received during this period will be addressed sequentially starting from the first business day after the holidays, so we kindly ask for your understanding in advance.

Our company has received the Chairman's Special Award and the Encouragement Award at the "2022 (71st) Electric Industry Technology Achievement Awards" hosted by the Japan Electrical Manufacturers' Association (JEMA). These awards recognize individuals who have contributed to the advancement and development of the electrical industry within JEMA. We believe that receiving such recognition is a result of our continued product development based on the valuable feedback we receive from our users. We will continue to work on developing attractive products, and we appreciate your continued support.

Thank you very much for your continued support. We sincerely apologize for the inconvenience, but our company will be closed for summer vacation during the following period. We appreciate your understanding and cooperation. From August 11, 2022 (Thursday) to August 17, 2022 (Wednesday) *We will resume normal operations on August 18, 2022 (Thursday). Inquiries received during this period will be addressed sequentially after August 18, 2022 (Thursday), so we kindly ask for your understanding in advance.

We will be exhibiting for the first time at the DMM Online Exhibition. 【Date and Time】 March 30, 2022 (Wednesday) to April 1, 2022 (Friday) 10:00 AM to 6:00 PM https://exhibition.showbooth.dmm.com/events/solar2203/ The company booth is now open! Admission is free, so if you're interested, please join us.

Thank you for your patience. The new Epsilon 1000 is now available for sale! ▽ For product details, click here ▽ http://www.kernel-sys.co.jp/product/Epsilon1000/ We also offer demo units for loan and explanations via the web, so please feel free to contact us. While we can't say it's a New Year's big sale, we will be offering a complimentary mobile battery option for the first production lot, so if you're interested, please take this opportunity to inquire!

Thank you very much for your continued support. We sincerely apologize for the inconvenience, but our company will be closed for the year-end and New Year holidays during the following period: December 29, 2021 (Wednesday) to January 4, 2022 (Tuesday). Please note that we will be open until 1:00 PM on December 28 (Tuesday). On January 5 (Wednesday), we will have an internal event, and we will resume regular business on January 6 (Thursday). Inquiries received during this period will be addressed sequentially starting from the first business day after the holidays, so we appreciate your understanding in advance.

On December 22, 2021 (Wednesday), we will present at the "NEDO Venture Business Matching Event." This event is hosted by NEDO (New Energy and Industrial Technology Development Organization) with the aim of introducing innovative advanced technologies from selected ventures and small to medium-sized enterprises under the "Technology Research and Development Project for Discovering and Commercializing New Energy Seeds," and facilitating business matching. Participation is free for anyone interested, so please join us! ▽For more details▽ https://www.nedo.go.jp/events/CA_100233.html Nihon Kernel System is scheduled to appear from 13:55 to 14:15.

★Major Renewal★ - Achieved shorter measurement intervals for I-V measurements - Increased work efficiency with automatic measurement function - Improved visibility with larger display - Long operation time with mobile battery - Compact and lightweight for easy portability - Supports Japanese/English Other features as before: - Simple operability (No prior settings required; measurement possible with one button) - Short measurement time (Approximately 1 second until result display; less affected by sudden changes in sunlight or shadows) - High-precision measurement (Built-in multiple large-capacity capacitor loads) - Measurement of high current up to 30[A] (Supports the increasing current of recent solar cells) - Clear graph display with 1024-point measurement - Stores up to 9999 data points in internal memory - Reverse connection, overcurrent, and overvoltage detection functions (misuse detection) - Scheduled measurements possible with remote operation via computer