Frequently Asked Questions
What model Galvanic Isolator do I need?
DEI Isolators are typically applied using an industry standard method of matching the device to the steady-state current rating of the shore power service. DEI Isolators are offered in 30A, 50/60A,100A and 200A ratings. For dual 30A services, one 50/60A DEI Galvanic Isolator can be used in place of two 30A units. For a more detailed method of sizing your Galvanic Isolator, please visit our Product Selection Guide.
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What does the term "fail-safe" mean?
To be considered "fail-safe," an independent laboratory must confirm that the isolator will either remain fully functional or remain a permanent, effective grounding path if it fails when subject to the maximum current capability of the grounding conductor for a given galvanic isolator current rating. This provides guaranteed safety grounding, even when the product is failed, thus the "fail-safe" designation.
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What is the difference between Fail-Safe Plus and Fail-Safe MAX?
All DEI GIs are categorized as either Fail-Safe Plus® (FSP) or Fail-Safe Max® (FSM). Fail-Safe Plus models not only meet the fail-safe test criteria in the proposed revision to A-28, but also have considerably higher fault current ratings than are required and have substantial lightning current ratings, which are not required by A-28; hence, the "Plus" designation unique to DEI.
Fail-Safe Max models provide even higher AC fault current ratings than Fail-Safe Plus models and will still be functional and meet all other requirements of A-28 after being subject to the fail-safe test criteria, thereby providing the ultimate in performance and safety grounding; hence, the "Max" designation.
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Do DEI products meet ABYC A-28 standards for Galvanic Isolators?
In the marine industry, the criteria for galvanic isolators is defined by the American Boat and Yacht Council (ABYC) recommended standard A-28, which has recently been revised. Due to recommendations to the A-28 galvanic isolator standards committee concerning the need to retain safety grounding under all conditions, as required by the U.S. National Electrical Code for all similar applications outside of A-28, the new revision of this standard now makes provision for fail-safe galvanic isolators, which guarantees the isoloater will never compromise the ground. DEI Galvanic Isolators have been tested to meet or exceed all requirements of the revised ABYC A-28 for fail-safe galvanic isolators and were certified by Imanna laboratory.
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Do DEI Galvanic Isolators need a monitoring system?
No. According to the revised ABYC A-28, any isolator meeting the fail-safe criteria will not require a monitor. Isolators not meeting the fail-safe requirement in the revised ABYC A-28 will still require a monitor.
Since DEI Galvanic Isolators are tested to meet and exceed all ABYC A-28 standards, monitoring is not required.
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How do I register on the DEI website?
Registration is quick and easy You may register by completing the required information on our registration form, found in the link above the navigation bar on our site. Once you've completed this information, you will receive an email containing your registration information and password.
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What do I do if I've forgotten my username and password?
At the login page there is an option to have your credentials sent to the email address that you registered with. Click on that link for further instructions.
Additionally, you may contact the DEI office directly and request your username and password.
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What do I do if I don't find what I'm looking for on the DEI website?
Please feel free to send your request to us through our Contact Page, or by contacting us directly.
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Can I purchase DEI products online?
Yes. You may purchase our products online by selecting the "Buy Now" button found on all of our product page and following the instructions. Online shopping is only available for US customers at this time.
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How can I purchase DEI products?
DEI products are available for purchase online in the United States, and through our primary distributors around the world. If you'd like to contact the distributor nearest to you, please let us know and we'll be happy to provide you with their information.
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What do I do if I'm having trouble downloading product literature off of the DEI website?
Our literature is all available in .pdf format. In order to open these documents, you will need Adobe Reader installed on your computer. Adobe Reader is available free of charge from Adobe products, and can be downloaded by clicking on the following button.
If you are still experiencing problems, please contact the DEI office for
assistance.
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