Outdoor column in oil immersed transformer intelligent protection controller  OEM/ODM
Outdoor column in oil immersed transformer intelligent protection controller

NKR - 03 distribution transformer protection measurement and control device is suitable for below 35 kv voltage grade of indirect grounding system, or the small resistance grounding system in power distribution transformer protection, integrating protection, measurement and operation control.

Controller and switch ontology through the control cable and air connectors for electrical connection, its protection and automatic monitoring function. The product is widely used in urban and rural power distribution transformer users. Shape as shown in figure 1.

 

1.2 use environmental conditions

A) altitude: 2000 meters or less

B) the environment temperature: outdoor - 25 ℃ ~ + 70 ℃

The highest annual average temperature of 20 ℃. The highest daily mean temperature 30 ℃

C) seismic capacity: the ground level acceleration of 0.3 g 0.15 g vertical acceleration and role last three sine waves

Safety factor of 1.67

D) maximum daily temperature 25 ℃

E) the sunshine intensity: 0.1 W/cm2 (wind speed 0.5 m/s)

F) maximum wind speed: 25 m/s or less

G) the largest ice thickness: 10 mm

H) operating environment: outdoor, no inflammable, explosive danger, chemical corrosion and the site of violent vibration

 

 

 

 

 

 

3. The function and characteristics

3.1 the protection function of controller

His quick break protection to cardiac over-current protection to cardiac overload derive light gas alarm has heavy gas protection has high oil temperature protection

Has zero sequence protection to cardiac real-time status query to cardiac intelligent PDA control (optional)

Derive real time clock to cardiac event record is left to pick up the prepaid meter (optional) is left on the remote control to cardiac SMS tt&c (optional)

The characteristics of the 3.2 controller

Filled with 485/232 communication interface, or through the remote monitoring of optical fiber, wireless;

Cardiac remote switching accelerated trip to cardiac remote control points and closing adopted to prevent maloperation design;

Derive the components - with the military level of high and low temperature device, product quality and reliable;

Cardiac and adjust the volume of communication software accuracy and measurement precision.

Cardiac devices have perfect self-check function, can accurately locate fault to chip.

3.3 structure characteristics

A) controller structure with strong weatherability, lon the protective characteristics of resistance;

B) aviation connector and switch ontology to connect, connect good reliability, high protection grade.