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function: over voltage, under voltage
Model: DVRD - 12/24/36/48(Optional)
Rated voltage: DC 12V/24V/36V/48V(Optional)
Monitoring circuit: direct current circuit
function: over voltage, under voltage
Overvoltage regulation range:
DC 12V: 13-17V
DC 24V: 26-34V
DC 36V: 39-51V
DC 48V: 52-68V
Undervoltage adjustment range:
DC 12V: 10-14V
DC 24V: 20-28V
DC 36V: 30-42V
DC 48V: 40-56V
Action delay range: 0.1-15s
Display mode: normal, action 2 LED lights indicate the working status
form: 2 set of normally open and normally closed contacts
capacity: 6A 250VAC (resistivity)
Installation: 35mm rail
Overall dimension: Approx. 79 * 23 * 79mm / 3.1 * 0.9 * 3.1in
Weight: 200 g / 7.1 oz(approx.)
Package list:
1 x Overvoltage Undervoltage Protector
Note:
Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.
Customer
2025-07-04 21:29:29
Reliable and easy to program.
Billz
2025-04-07 13:11:39
I use this in conjunction with a relay to control a 1000w pure sine wave inverter. All the inverters I looked at had ridiculously low voltage cut offs, typically around 10v. That will kill hundreds of dollars of AGM's to save a couple of bucks in these and condiments in my fridge. I used this to set it to 12v, and kills the relay / turns off the inverter before damaging my batteries. Working great.Update 7/26: just bought another for use as an overvoltage cut off to backup a 250ah LiFePO4 internal BMS.
M. Adam Davis
2025-02-02 11:03:39
While the inverter and bms are supposed to talk to each other, having an additional hardwired low voltage protection provides me with a great deal of peace of mind as my wife and kids use the solar system without a lot of thought.This goes to an automatic transfer switch (well, it’s a bit more complicated than that, but for our purposes that’s good enough detail) and has two types of hysteresis - voltage and time. Both are important for system where the load is large and the battery pack not excessively huge - a large load on the system might cause it to trip then when released the voltage might come above the upper point - the time delay ensures that if that’s the case then it won’t switch more frequently than the period set in the timer.I’d prefer a longer timespan than 15 seconds - measured in minutes - but for worst case scenario protection (which is what this will be, this is fine.
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