
Time Delay DC Overvoltage Protection Relay Plug - In Module With DIN Socket
■Features:
● Overvoltage protection ● Undervoltage protection ● 8PFA base
mounting
■Application:
Products are widely used: variable frequency power supply, UPS
power supply and various instrumentation
Table DC power supply overvoltage and undervoltage protection.
■ Structural features:
1. The protector is installed on the base of 8PFA. The base is
equipped with two M4 screw holes, which can be installed
independently or using HT35 rails.
2. Indicator light: 2 indicator lights, divided into power
indication and normal operation indication.
3. Outer dimensions: 50mm x 40mm x 57.5mm.
Overvoltage protection, also known as overvoltage protection, is a type of protection that disconnects the power supply or reduces the voltage of the controlled device when the protected line voltage exceeds a predetermined maximum value. Overvoltage protection is usually configured with varistors. When the transient high voltage generated by the circuit is applied to both ends of the varistor, the resistance of the varistor becomes infinitely small, which makes the varistor conduct and passes the large current generated by the circuit to earth through the ground wire, thereby protecting the power supply device from being affected. High voltage damage.
It should be noted that overvoltage protection will start immediately and overcurrent protection will have a delay of about one second. This is because if the power supply works normally, such as a sudden short circuit in the load of the power supply, the instantaneous current output by the power supply is several times or several times the rated current value. It can be considered as a current surge, far exceeding the overcurrent protection. Value, but this time does not want overcurrent protection to work. But after the short circuit is released, the voltage automatically returns to normal. Therefore, when designing over-current protection, current surges during sudden short-circuiting must be avoided, and only the duration of the output over-current should be considered to start the over-current protection.
Protective Functions
Applications
Model | DVM-A | |||||||||||||||
Input circuit=Measuring circuit | DC supply | |||||||||||||||
Rated voltage | DC12V,DC24V,DC36V,DC48V | |||||||||||||||
Monitoring functions | overvoltage,undervoltage | |||||||||||||||
Voltage setting range |
| |||||||||||||||
Tripping delay time | 1-15s adjustable | |||||||||||||||
Voltage hysteresis | 3-5% fixed | |||||||||||||||
Reset delay time | 100ms | |||||||||||||||
Indicators | normal,trip | |||||||||||||||
Output contacts | 2C/O | |||||||||||||||
Contact capacity | 5A,250VAC/30VDC(resistive load) | |||||||||||||||
Degree of protection | IP20 | |||||||||||||||
Working conditions | -25%~65℃,≤85%,non-condensing | |||||||||||||||
Mechanical durability | 1000000cycles | |||||||||||||||
Dielectric strength | >2KVA 1min | |||||||||||||||
Weight | 160g | |||||||||||||||
Dimension | 50x40x57.5mm | |||||||||||||||
Applicable socket | PF085A &SH-3 | |||||||||||||||
Mounting | Din Rail |
Wenzhou Ginri Power Automation Co., Ltd.
GINRI POWER AUTOMATION CO.,LTD. is a professional production voltage phase sequence protection
device (and name: three-phase power monitor), and PLC output zoom
Board, and smart type motor integrated protection device, and
industrial parts manufacturers, technology development team in
elevator industry, and refrigeration industry, and crane industry,
environmental equipment, mechanical NC industry and the industrial
following insurance industry, field has more than 10 years practice
experience, has development out variety price economic and function
excellent of products. CQC product quality system by China Quality
Centre (3C) certification and CE certification, products in the
manufacturing process in strict accordance with the ISO9001 quality
assurance system requirements and professional technical and
service support.
Voltage phase-sequence protection for many years (equipment,
refrigeration equipment, crane (passenger and goods) elevators,
control of DC power supply system (Cabinet) screens, precision air
conditioners, room air conditioners, electric hoist, boiler
equipment, laser equipment, parking equipment, cranes, compressors)
and so on using the run.
PLC output amplifiers (environmental protection equipment,
numerical control and automation equipment, automobile, plastic
machinery, hydraulic machinery, ceramic foam machinery, woodworking
machinery, machinery) and so on using the run.
Years of integrated Intelligent motor protector (power plants,
paper mills, steel mills, aluminium plants, cement plants, sewage
treatment plants, coal preparation plants, refineries,
petrochemical plants), and so on using the run.
Product quality is stable and safe, reliable, and earned a solid
market position in the market and a high reputation in the
industry, received unanimous recognition and praise of our
customers.
Ginri company always adhere to "scientific management as the core,
the user needs for the Centre to focus on product quality,
meticulous service is sincere," the spirit of enterprise, please
call us from all walks of life, thank you!