Adjustable DC Voltage Monitoring Relay , Battery Phase Control Relay DVRD Model
What is Overvoltage protection
Overvoltage protection is a type of protection that disconnects or reduces the voltage of a controlled device when the protected line voltage exceeds a predetermined maximum value.
Overvoltage protection, also called overvoltage protection, is a type of protection that disconnects the power supply or reduces the voltage of the controlled device when the voltage exceeds a predetermined maximum value. There are many overvoltage protectors that come into being, some of which are housed inside the equipment and some are installed on the power supply side. With the protection of overvoltage protectors, we are more secure when using electrical equipment.
Common overvoltage protection components or devices include lightning protectors, varistors, and arresters. In the field of communications power supplies, varistors are often configured for overvoltage and lightning protection in order to prevent lightning high voltages from causing momentary damage to them. When a lightning high voltage is applied to both ends of the varistor, the resistance of the varistor becomes infinitely small, which makes the varistor turn on and introduces a large current generated by the lightning into the earth, thereby protecting the power supply device from lightning damage. In the power system side, surge protectors are usually used to overvoltage protection AC and DC.
Features:
- Compact modular size
- DC circuit monitoring of over-and undervoltage
- Adjustable over-and undervoltage threshold
- Adjustable trip delay time
- Powered by the measuring circuit
- 2C/O contacts
- 2 LEDs for status indication
Protective Functions
- DC overvoltage
- DC undervoltage
Applications
- DC cabinet
- Battery
- Electric control system
| Model |
DVRD |
| Input circiut =measuring circuit |
DC supply |
| Rated voltage |
DC12V.DC24V.DC36V,DC48V |
| Monitoring functions |
Overvoltage,undervoltage |
| Voltage setting range |
| Rated voltage |
undervoltage |
overvolatge |
| DC12V |
10-14V |
13-17V |
| DC24V |
20-28V |
26-34V |
| DC38V |
30-42V |
39-51V |
| DC48V |
40-56V |
52-68V |
|
| Tripping delay time |
0.1~15s adjustable |
| Voltage hysteresis |
3-5% fixed |
| Reset delay time |
100ms |
| indicators |
normal,trip |
| Output contacts |
2C/O |
| Contact capacity |
6A,250VAC/30VDC(resistive load) |
| Degree of protection |
IP20 |
| Working conditions |
-25℃~65℃,≤85%RH,non-condensing |
|
Mechanical
durability
|
1000000 cycles |
| Dielectric strength |
>2KVAC 1min |
| Weight |
130g |
| Dimension(HXWXD) |
79X23X79mm |
| Mounting |
Din rail |
Product Tags:
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Adjustable DC Voltage Monitoring Relay , Battery Phase Control Relay DVRD Model Images
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