SKU: 39522606852

Victron Anti-islanding relay - Ziehl Voltage and Frequency Relay UFR1001E

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Description

Victron Anti-islanding relay - Ziehl Voltage and Frequency Relay UFR1001EZiehl UFR1001E Voltage and Frequency Relay for Grid Connected Generation Systems Reliable Anti Islanding Protection for Solar PV and Distributed Energy Resources The Ziehl UFR1001E is a precision voltage and frequency relay engineered to deliver anti islanding protection for grid connected generation systems. It continuously monitors voltage and frequency at the point of common coupling, ensuring immediate disconnection when grid parameters fall

Ziehl UFR1001E Voltage and Frequency Relay for Grid-Connected Generation Systems

Reliable Anti-Islanding Protection for Solar PV and Distributed Energy Resources

The Ziehl UFR1001E is a precision voltage and frequency relay engineered to deliver anti-islanding protection for grid-connected generation systems. It continuously monitors voltage and frequency at the point of common coupling, ensuring immediate disconnection when grid parameters fall outside prescribed limits. This is essential for compliance with VDE-AR-N 4105:2018-11, VDE-AR-N 4110:2018-11, G98, G99, and ÖVE/ÖNORM E 8001-4-712:2009, making it a trusted component in solar PV installations, cogeneration plants, and other distributed energy resources across Australia and Europe.

Unlike generic monitoring relays, the UFR1001E uses true RMS measurement for accurate detection of over/under voltage, over/under frequency, vector shift, and rate of change of frequency (ROCOF). Its passive anti-islanding detection (per chapter 6.5.3 and appendix D2) reduces the risk of unintentional islanding, protecting both utility personnel and equipment from back-feed hazards. The wide auxiliary supply range of AC/DC 24-270V simplifies integration into diverse control circuits, while the two change-over relay contacts provide flexible interfacing with contactors or circuit breakers.

Key Features

  • Comprehensive grid monitoring – voltage, frequency, vector shift, and ROCOF in one device
  • True RMS measurement for high accuracy even with distorted waveforms
  • Wide auxiliary supply – AC/DC 24-270V for versatile installation
  • Adjustable setpoints and time delays to match local utility requirements
  • Clear LCD display and LED indicators for real-time status and diagnostics
  • Compact 6 TE DIN rail housing (90 x 105 x 69 mm) for space-efficient panel mounting
  • IP30 / IP20 protection suitable for indoor control cabinets

Engineered for Compliance and Safety

Meeting stringent grid connection standards is non-negotiable for solar installers and system integrators. The UFR1001E is pre-certified to VDE-AR-N 4105 and G99, eliminating guesswork and reducing commissioning time. Its vector shift detection (<50 ms response) and ROCOF monitoring provide fast, reliable loss of mains detection, a critical requirement for embedded generation up to and beyond 30 kW. The adjustable hysteresis and switching delays allow fine-tuning to avoid nuisance tripping while maintaining grid stability.

For larger or three-phase systems, the UFR1001E can be paired with external contactors and a main circuit breaker. We also offer a pre-assembled Anti-Islanding Box 63A (single and three phase) that includes this relay, two in-line 63A contactors, and a main breaker—ready for immediate deployment.

Applications

  • Solar PV systems – residential, commercial, and industrial grid-tied inverters
  • Battery energy storage systems with grid export capability
  • Cogeneration (CHP) plants and backup generators operating in parallel with the grid
  • Wind and hydro turbines requiring grid synchronisation and protection
  • EV charging infrastructure with vehicle-to-grid (V2G) functionality

Why Choose the Ziehl UFR1001E?

Selecting a certified anti-islanding relay reduces project risk by ensuring regulatory compliance from day one. The UFR1001E’s robust design and wide operating temperature range (-20°C to +55°C) make it suitable for Australian conditions, from coastal installations to inland heat. Its DIN rail mounting and clear terminal labelling speed up installation, while the digital display simplifies commissioning and fault finding.

With proven reliability in thousands of installations worldwide, the UFR1001E is a future-proof choice for grid-connected generation. Download the datasheet and certificates below for full technical details, or visit www.ziehl.de for additional documentation.

Add the Ziehl UFR1001E to your project today and ensure your grid-tied system meets the latest anti-islanding protection requirements with confidence.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 39522606852

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Shabby Arora
Lowell, US
★★★★★ 5
Do overs
Format: Kindle
With every phenomenal book Mia reminds me why I became an obsessed reader. Her stories are what keep me up late into the night, unable to put them down or walk away. Rich in brimming emotions, thrumming with adrenaline rush at impending danger, this book will make you forget the world exists beyond its pages. When your fave author writes a book, you don't peek at the Blurb or look for massive list of triggers. You cover your eyes and jump in. This tragically profound story hits you with a force of a runaway juggernaut, drawing you in till you are completely consumed in the characters' lives. First few pages sweep you in like rushing tidal waves, one after another, pulling you under, in inescapable tsunami of emotions. “Fair is a myth,” Rex said. “Nothing in this messed-up life is fair.” I Landed straight into Camille Cortlandt's house where an unspeakable crime is in progress. Cami, her sister Elle and her mom are subjected to horrible torture and assault. Her father tied and assaulted too. And she was worried about another smaller problem from her boyfriend- Hollis Barclay's party!! Their lives explode in chaotic mess, flying shrapnel hitting Rex Lowe and he becomes collateral damage, thus connecting them forever. But there's another silent, abandoned victim who becomes the central pawn in the most elaborate and bizarre revenge saga I ever did read. The twist comes out of nowhere and smacks you in the face. WTH just happened and Whos & Whys will leave you reeling!! “Did. Not. See. That. Coming” Cami is strong, beaten down but rising phoenix. A brave soul indeed. Rex Lowe is a true saviour, he steps up where most would've fled. “We. There was that we again that she wanted to cup in her palms like a treasure, afraid that it’d be taken from her if she didn’t protect it. Knowing it wouldn’t be hers for long, no matter what.” Cyrus Sanders is ultra smart, observant, fantastic chess student which helps him strategize with calm conviction. What a delight to see him perform!! But the accolades belong to another person hiding in plain sight. What they do to move the story forward, keeping an eye on everything, and sneaking in when wanted was simply brilliant. Every story by Mia brings me to my knees. Her trope/genre range is vast and diverse. Uniquely penned stories with immemorable characters. I can actually recall any character of her story at any given moment of time. Such is her impact. “5 stars for Do-Overs”
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Reviewed in the United States on October 15, 2025
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Kayla Cox
Whiting, US
★★★★★ 4
Provoking but not suspenseful
Format: Kindle
Mia Sheridans thrillers are one of my top favorites, her writing style is so raw and beautiful. I wanted to love this one as much as Bad Mother or All the Little Raindrops but it just didn't hit the same mark for me. The book starts off with a bang, but soon becomes a bit more dormant for the middle portion. I still enjoyed the book, but I think I had a preconceived notion it would be more along those lines, I felt the plot of this one wasn't as suspenseful, it was fairly straight forward which is fine just not what I expected. Or maybe I'm just desensitized from all the thrillers I read. I did love the themes of how trauma, resilience and love weave together, a chance at a do over. I also felt Seraphinas portion was a little clunky and illogical in the overall storyline. Regardless I love Mia Sheridans writing and won't stray away from her thrillers.
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Reviewed in the United States on October 13, 2025
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Ray
San Leandro, US
★★★★★ 5
Best beard oil
Scent: Palo Santo
Smells extremely good and leaves my beard full, soft, and refreshed.
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Reviewed in the United States on May 16, 2026
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Undaunted Dame
Fort Morgan, US
★★★★★ 5
Great for softening and conditioning “private” hair!!
Scent: Palo Santo
I’m not trying to shock an offend anybody, but this is a secret I think other women would want to know. A couple of years ago, I was walking down an aisle at the drug store, looking for some way to condition and soften my increasingly graying “girl beard” and I bought Cremo oil thinking if it can work for men’s beards then why can’t it work on other hair. I tried it and I’ve been using it ever since. It immediately softens and conditions and smells incredible. I’m sure that Cremo never envisioned it being used this way but, then again, it all depends what or who’s “beard” you’re talking about doesn’t it? Just saying. Maybe Cremo should start a line for intimate hair called “Private Reserve.” 🤔
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Reviewed in the United States on April 15, 2026
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Christian F
West Palm Beach, US
★★★★★ 5
Great Price, Last Long, Thick Consistency Smells Great
Scent: Casked Vanilla, Scent: Casked Vanilla
This Casked Vanilla Cremo Beard oil is great. I apply one dropper usually after a shower with a damp beard. To me it absorbs better that way. It doesn’t cause me any skin irritation, the longevity of it last pretty much all day and doesn’t loose smell or consistency and I’m outside for work everyday. Also moisturizing texture it has (whew) Great. Will definitely buy another scent maybe or stick with this one.
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Reviewed in the United States on March 31, 2026

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