online oil purifier, on-load tap-changer online oil purifying device is used to bypass cycle filtering of on-load switch.
DZX Series Transformer On-Load Tap-Changer Oil Purifier
DZX series online oil purifying device, with its special feature of transformer on-load tap-changer, has the capacity to eliminate the following industrial problems. Switches on large transformers widely installed on-loading switches with frequent on-load switching can produce arcs which will lead to oil cracking, free carbon and water, and deteriorate oil quality, lower oil dielectric strength, limit switching frequency, and even endanger the safety of transformer operation.
The DZX series on-load tap-changer online oil purifying device is used to bypass cycle filtering of on-load switch. Under the condition of the transformers normal operation, it can choose timing filtration or oil filtration after switching the regulator. The device can remove free carbon, water and oxide material when it is cycle filtering. This feature will ensure the quality of switching oil, keep the dielectric strength, increase switch working life, extend maintenance cycle, reduce shutdown frequency , guarantee voltage quality and improve the security and reliability of on-load tap-changer.The apparatus of DZX on-load tap-changer online oil purifying device is installed in a stainless steel cabinet controlled by the programmable timer without supervision required. It is fixed on the side of on-load tap-changer and has optional accessories for various flow rate and different functions.
DZX TECHNIQUE SPECIFICAITONS
| Standing style | Hanging style |
Motor power(kw) | 0.37 | 0.37 |
Power supply | 380V/50Hz | 380V/50Hz |
Rating flux(L/min) | 7,10,12 | 7,10,12 |
Rating pressure(MPa) | 0.5 | 0.5 |
inlet diameter | DN15~DN20 | DN15~DN20 |
outlet diameter | DN15~DN20 | DN15~DN20 |
filter model(remove impurities) | A220G01BM | A220G01BM |
filter model(remove water) | A120CW10 | A120CW10 |
precision | 1μm | 1μm |
water content | ≤20μL/L | ≤20μL/L |
Medium Temperature | -20°C~100°C | -20°C~100°C |
ambient temperature | -50°C~70°C | -50°C~70°C |
oil voltage after filtering | ≥50kV | ≥50kV |
Weight of machine(kg) | 95 | 81 |
Overall Dimension(mm) | 760×560×700 | 900×600×260 |
FEATURE1. To remove free carbon from oil. 2. To remove water from oil.3. To increase oil dielectric strength.4. To Lower wear and coking of contact point.5. To increase the switch working life.6. To extend maintenance cycle.7. To extend insulating oil life.8. To reduce shutdown frequency.9. To guarantee power supply quality.
FILTER ELEMENT FUNCTION FEATURES1. Fineness filter removes free carbon impurities from oil.2. Dehydration filter adsorbs water content and oxides from oil. 3. Filtering fineness: less than 1-3μm.
STANDARD CONFIGURATION:Adopted with American VELCON filter which is installed with bypass valve and pressure-difference originating device. CB
series of oil pump with the feature of low noise and small size. Filter element working status displayer and alarm signals. Adopted with Siemens Relay. Adopted with 3-phase 380V micro-motor.Adopted with sealed stainless steel box can work under any weather conditions. Adopted with standard electric control stainless steel cabinet. Motor reversible rotation control, overload and phase protection.Chassis ventilator (selected according to topographic condition)With a heater to prevent machine box condensing.Humidity Relay, adjustable from 50%-100%With Siemens moulded case circuit breaker.With imported time relay.
NOTES FOR SELECTIONThere are two operation modes. One is to start oil purifying device upon switch each action, oil filtration running time
according to requirement, usually 30 minutes (0-99hours). The other is to start filter regularly every day, running time is
set as 2 hours.To ensure the equipment run normally in humid area, the temperature of filter box and filter body is usually lower than dew
point. Under this circumstance, a heater is required, which will prevent the machine box condensing resulting in water entry.The scavenge port is for main body ventilation.Wall-mounted type and adjacent side-mounted type are for options.Applicable on-load tap-changer models: V type,MS type, M type, T type, F type, G type.
Online oil purifier/ on-load tap changer online oil purifying device
