Ⅰ. Application
NSH VFD series is mainly used to improve the properties of insulation oil. It can remove trace water, gas, particulate matters etc. from the insulating oil effectively and rapidly so as to boost performance of transformers, circuit breakers, mutual inductors, cable and capacitors which has insulation system. VFD series specialize in purifying branded oil, insulating oil of high voltage and super high voltage transformer. Additionally, it is suitable for treating low viscosity lubrication oil.
Ⅱ. Description
NSH VFD series utilizes coacervation technology, coalescing technology, separating technology and refined purification technology. Comparing to Model VF series, it add second stage of separating system to improve the effect of purification. To remove free, soluble water, carbon, free and dissolved gases and particulate matters from insulating oil effectively and rapidly.
Ⅲ. Features
ü To remove free, soluble water, carbon, free and dissolved gases and particulate matters from insulating oil effectively and rapidly.
ü Enhance the value of breakdown voltage greatly.
ü Easy handling and maintenance.
ü Inject oil into the transformers
ü Online work
ü Lower maintenance and replacement expenses
ü High efficiency and effectiveness
ü Available in mobile or stationary options.
ü Small size, light weight, low noise
ü Various sizes and configurations (alloy shield) available.
Ⅳ. Edges
l Dehydration (Degas) System
² The horizontal vacuum vessel can enlarge evaporation area efficiently. The heater, being placed on the horizontal vacuum vessel, becomes an evaporator. Thus the evaporation area of horizontal vacuum vessel is three times more than that of the vertical vacuum vessel. This innovation can dehydrate and degas effectively and efficiently.
² The optimal structure of the dehydration (degas) system enlarges the surface area of oil exposed to the vacuum system and extends the flowing distance of the oil in the vacuum system. Thus there has sufficient time to remove the moisture and gas from the oil by vaporization.
l Filtering System
² The filtering materials with variable apertures are made of specialized glass fiber. The sizes of the filtering fiber and aperture dwindle gradually in the different filtering stages. The impurities with different particulate sizes are filtered step by step. The capability of removing particulate matters and impurities is improved greatly by this method.
² The filtering system has stable and perfect filtering fineness. The filtering fineness has several grades, including 1, 2,3,4,5,6,10 µm etc. Oil β≥1000 after filter.
² The filtering system is equipped with reverse rinse and filth device. It improves the effectiveness of filtering and extends the lifetime of filter awfully.
l Oil heating System
² The unique heater structure heats the oil uniformly.
² Oil Heater System assures less than 1.0 w/cm². During the heating process, the deterioration of the oil caused by overheating is avoided.
² The oil temperature can be adjusted between 45℃ to 65℃.The heater is controlled manually or automatically. The heater will stop automatically when the oil temperature reaches a certain degree.
² Being installed with safety protection devices, the heating system is secure and reliable. The heater will stop operation automatically when the oil volume of inlet is too low to avoid the damages of the heater.
l Electrical Apparatus controlling System
² The main components of the electrical apparatus made by Siemens Company ensure the safety of the controlling system.
² Having several protection systems which will avoid oil ejection, overload and over voltage etc.
l Oil-level Controlling System
² The oil-level floating ball and infrared liquid level automatic controller system are installed in the vacuum vessel to control the oil level so as to avoid the oil being suctioned into vacuum pump in the operation.
² The new innovation of eliminating froth can avoid the oil being suctioned into vacuum pump.
l High quality components
² The main component parts of NSH products such as vacuum pump, oil pump and electric apparatus are from SIEMENS, LEYBOLD, PALL, ABB, ALLWEILER, OMRON, SCHNEIDER, RIETSCHLE, NSH, AMICO etc. It ensures NSH products high quality and reliability.
l Structure and Appearance
² NSH products adopt ship-shape chassis-mount structure to ensure oil leakproof and protect the environment from pollution.
² The whole equipment is characterized by small size, light weight and convenient to move around.
² Various sizes and configurations (alloy shield) available.
² Available in mobile or stationary options.
² Automatic vacuum oil purifier and anti-explosion vacuum oil purifier are both available according to customers’ needs.
Ⅴ. Technical Specifications
|
Item
|
Unit
|
VFD-30
|
VFD-50
|
VFD-100
|
VFD-150
|
VFD-200
|
VFD-300
|
|
Flow Rate
|
L/H
|
1800
|
3000
|
6000
|
9000
|
12000
|
18000
|
|
Vacuum Range
|
MPa
|
－0.092～～－0.099
|
|
Max Vacuum Range
|
Pa
|
≤ 50
|
|
Working Pressure
|
MPa
|
≤ 0.2
|
|
Temperature Range
|
℃
|
45--65
|
|
Water Content
|
PPm
|
≤ 4
|
|
Gas Content
|
%
|
≤ 0.1
|
|
Breakdown Voltage
|
Kv
|
75
|
|
Power Supply
|
V
|
~50Hz 380V（or as needed）
|
|
Working Noise
|
dB
|
≤ 72
|
≤ 78
|
|
Heating Power
|
Kw
|
24
|
36
|
72
|
90
|
120
|
150
|
|
Total Power
|
Kw
|
27
|
41
|
79
|
98
|
130
|
162
|
|
Inlet(Outlet)Diameter
|
Mm
|
DN20
|
DN25
|
DN32
|
DN40
|
DN50
|
DN65
|
|
Net Weight
|
Kg
|
510
|
650
|
800
|
1100
|
1300
|
1600
|
|
Size
|
length
|
Mm
|
1400
|
1500
|
1800
|
1900
|
2000
|
2100
|
|
width
|
Mm
|
1000
|
1250
|
1400
|
1650
|
1700
|
1700
|
|
height
|
Mm
|
1200
|
1300
|
1500
|
1800
|
1850
|
2000
|
