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]
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SKU: 39522606852

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4.0 ★★★★★
Based on 2219 reviews
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Verified Purchase
Shanna S.
Battle Creek, US
★★★★★ 4
Looooves her crazy new ball
Color: Orange, Color: Orange
Our 90lb mastiff/boxer mix Indie is very playful, curious and energetic. She needs toys that engage her and keep her busy. This ball does the job! We’ve had it for less than a week. Here’s what I love and what could be better: PROS: • She dog loves it. She whines for it. She gets absurdly excited when I get it out. She’s a bit of an anxious dog, but had zero problems with it inexplicably coming to life. • It lasts a while on a single charge, so it keeps her busy for a good long time. The longest we’ve used it at a stretch is an hour. • It’s pretty durable. She’s a super chewer (destroyed every “non-destructible” toy we’ve purchased for her), but the actual ball is hard plastic. She gnaws on it and it gets scratches, for sure. But she’s not going to chew it to pieces. • On carpet, it’s reasonably quiet. • It comes with a replaceable silicone button. • It’s easy to charge…just pull off the silicone button and the charging port is inside. • The silicone button is flush with the ball’s hard plastic surface, so there’s no way for her to pull the silicone button out and swallow it or get to the charging port. CONS: • Cover is worthless if your dog is a chewer. It goes on like an envelope with a Velcro closure. We took it off immediately. • Without the cover, it’s very noisy on hardwood floors. To us, it’s worth it. (Though, I work from home, so I might feel differently after the holiday vacation.) • She’s an XL dog, so she can fit the whole ball in her mouth easily and accidentally chomp down on the button and turn the ball off. Not a big deal, just something to know if you’ve got a Lab or larger dog. • With extended playtime, the two halves can come unscrewed, especially with a large dog who uses their paws/jaws on it a lot. Thankfully, it makes a loud buzzing noise when this happens, so we know we need to take it from her and screw it back together. Is this a potential danger? With the rechargeable battery inside, I’d say yes. But we also don’t let her play with this toy without supervision. So keep that in mind. Bottom line: It has its drawbacks, but it keeps her entertained and seems like it should last her at least 6 months with supervised play. Which is honestly REALLY good when we’re talking about Indie, Destroyer of Toys. I’d buy it again.
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Reviewed in the United States on December 31, 2024
T
Verified Purchase
T. Bock
Battle Creek, US
★★★★★ 3
Difficult/impossible to unscrew plastic cups (in order to recharge the vibrating/blinking device)
Color: Orange
Generally, I don't leave feedback on items purchased. However, in this case, I feel compelled to do so in hopes the mechanical engineers (of this product) will take my input to heart and ultimately modify it. First the pros... - I have 2 high-energy dogs (Jack Russell Terriers) who love their toys (e.g., chewing bones, tug-of-war, etc.) but usually get bored with them rather quickly. - This interactive PetDroid ball, however, keeps them busy for a long time. - In fact, my smaller dog (Max) knows its storage location and sits (as early as 6 AM) in front of the cabinet so that I give him "his ball". It keeps him busy for up to 1-2 hours at a time. - Max is literally addicted to the PetDroid ball... his determinant play with it makes me laugh all the time. Now, the cons... - After several days of play, the exterior looks chewed up quite a bit. That's no problem though. - Unfortunately, the interior "threads/grooves" of the two plastic cups (for closing/fasting) are very tiny. - Thus, after an hour-long hard play, it is almost impossible to unscrew the 2 plastic cups in order to recharge the interior device. - It appears the 2 cups somehow come off track and get realigned from the inside. - At that point, I cannot unscrew the PetDroid ball in order to recharge the device.... and without the blinking/vibration, this toy is no longer fun for play. - Ultimately, I had to place the bottom half of the ball into a vise and then use a plumbing wrench to untwist it. Proposed Solution: - Increase the size of the plastic cups' interior threads/grooves so that they won't get realigned/come off track. - This would mitigate the current dilemma of NOT being able to unscrew the ball in order to recharge it. In my view, this should be a relatively simple fix and significantly improve the durability of this product. Thank you for your time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2022
S
Verified Purchase
Scott L.
Chelsea, US
★★★★★ 5
Good fun and entertaining!
Color: Orange
A really fun interactive toy for your dog! It's pretty erratic and really gets him chasing it. The included soft cover was kinda hard to install and then it's hard to turn it off and on with the cover on, I feel like the cover didn't really improve it at all, sure it's louder without the cover but I feel like dog also likes it that way, he likes loud squeaky toys and this thing making a bunch of noise is appealing to him. We have mostly hardwood floors so it really gets moving, I'm sure on carpet it would be a bit quieter and maybe even a bit slower to move around but on hard smooth surfaces this things can really get zipping around abd get some speed to make him chase it. Overall a fun and entertaining toy.
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Reviewed in the United States on January 27, 2026
B
Verified Purchase
bill a.
Whiting, US
★★★★★ 5
Awesome
Color: Orange
Awesome Toy . My Jack is crazy over it. She usually get bored with others, but this toy still has her attention after a couple of weeks Runs a long time on a short charge. 👍🏻
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
C
Verified Purchase
Chad
Massapequa, US
★★★★★ 2
Not the Fetch-Fest I Hoped For
Color: Orange
I had high hopes for the PetDroid Interactive Dog Ball, especially with the newly upgraded features and promises of durable, motion-activated fun. Unfortunately, it didn’t quite live up to expectations for my furry friend. Here’s why I’m giving it 2 stars. Promising Features, Lackluster Results The idea behind this toy is fantastic: a durable, motion-activated ball that would entertain my dog without much effort on my part. The ball is supposed to roll around on its own, keeping my dog engaged and active. However, in practice, it just didn’t capture my dog’s interest. Durability I will give credit where it’s due: the ball is well-made and seems durable. It can withstand some rough handling, which is great for more aggressive chewers. Unfortunately, durability doesn’t mean much if your dog won’t play with it in the first place. Motion Activation The motion activation feature is hit or miss. While the ball does move around as advertised, it didn’t seem to move in a way that intrigued my dog. He gave it a sniff, watched it for a minute, and then walked away, unimpressed. I tried multiple times to get him interested, but he simply wasn’t having it. Lack of Engagement The biggest issue is that the ball just didn’t engage my dog at all. It might be more suitable for a different personality type or breed, but for my pooch, it was a total flop. He’s usually quite playful and curious, so I was surprised by his lack of interest. Final Thoughts Overall, the PetDroid Interactive Dog Ball might work for some dogs, but it was a miss for mine. If your dog is easily entertained by automated toys, it might be worth a try. However, based on my experience, I can’t wholeheartedly recommend it. Pros: Durable construction Motion-activated as advertised Cons: Did not engage my dog Motion activation wasn’t intriguing enough Might be more suitable for specific dog types or personalities If you decide to give it a shot, just be prepared for the possibility that your dog might not find it as entertaining as you hope. For us, it’s back to the drawing board for a more engaging toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2024

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