Product Name: DZX series on load tap changer on-line oil purifier

Product overview:

● DZX transformer on load tap changer on-line oil purifier is mainly used for bypass circulating filtration of insulating oil of 35kV ~ 500kV transformer on load tap changer. It can filter the switching oil regularly under the normal operation of the transformer system, or automatically filter the switching oil after the action of the voltage regulating switch.

● the on-line oil purifier can effectively remove the free carbon, moisture, oxide and impurities in the oil during circulating filtration, ensure the oil quality and insulation strength of the switch oil, increase the switching times of the switch, prolong the maintenance cycle, reduce the number of power outages, ensure the voltage quality and improve the safety and reliability of the on load tap changer.

● DZX series transformer on load tap changer on-line oil purifier is usually permanently installed near the on load voltage regulating tap changer (the installation method is wall mounted or side fixed). As a special equipment, it has a variety of flow and different functional accessories to choose from. It is an energy-saving and consumption reducing environmental protection product.

● integral oil circuit, embedded structure, double seal, no leakage!

● full digital control, LCD display and function keys are convenient!

● high precision filtration, on-line oiling, tile bleeding, practical!

● sampling before and after filtration, visual window and fault display are intuitive!

● intelligent temperature and humidity control, multiple protection, remote monitoring, reliable!

● stainless steel, standard control box, all-weather box, durable!

● remote monitoring system, operation status and filter element status display.

● motor forward and reverse rotation control, motor starting overload and phase loss protection device.

● equipped with temperature relay, adjustable by 50% ~ 100%.

● the tap changer will automatically start the oil purifier device every time it acts, and the operation time can be set as required. The oil purifier time is generally set to 30 minutes (0 ~ 99 hours); Another way is to filter regularly every day, and the operation time is generally set as 2 hours. These two operation modes can be selected separately.

Configuration selection: A. all imported parts; B. joint venture parts

Material selection: 1. Stainless steel polishing; 2. Carbon steel paint baking

Function selection: A. automatic / manual / timing; B. manual / timing

Installation method: 1. Wall mounted; 2. Floor side installation

DL / t574-1995 guide for operation and maintenance of on load tap changer

Gb10584-1989 Application guide of on load tap changer

Product advantages:

1. Integral oil circuit

2. High precision secondary separation and filtration

Design two-stage separation and filtration, and the first stage adopts 1 μ M filter element to remove metal particle impurities such as free carbon. The later filter element is built with high-performance active adsorption material, which can remove substances such as water and organic acid, so as to maintain good pressure resistance of insulating oil.

3. Full digital control

High performance embedded special digital controller is adopted. Unique control algorithm, strong electromagnetic anti-interference design, stable and reliable operation.

4. Simple and intuitive man-machine interface

LCD display, Chinese menu, convenient common function keys, friendly man-machine dialogue, intuitive and easy to understand interface, no memory and simple operation.

5. Multiple protection for circuit overflow and pressure detection

The system is equipped with overflow valve and pressure detection and pressure limiting function; When the outlet pressure is higher than the opening pressure of the overflow valve, the oil circulates internally through the overflow valve. If the overflow valve fails, the pressure detection can also play the role of pressure limiting protection, stop the motor and protect the system. The oil suction port of the pump is equipped with a pressure sensor to prevent the motor from starting and damaging the oil pump when the oil inlet valve is not opened.

6. Intelligent temperature and humidity control

When the temperature is lower than or higher than the set value (the appropriate temperature setting is 0 ~ 40 ℃), the system automatically heats or dissipates heat to ensure the reliable oil filtration of the system in various temperature and humidity environments with harsh environment, so as to realize the all-weather unattended working mode.

7. Online gas venting

During equipment patrol inspection, the patrol inspection personnel directly discharge the gas in the tap changer through the gas online venting mechanism of the oil filtration system.

8. On line oil replenishment Technology

When the long-term working oil level of the on load tap changer drops, the qualified insulating oil of the same model can be added into the on load tap changer body through the oil filling mechanism of the oil purifier system itself.

9. Power phase sequence and voltage detection locking protection function

When the power phase sequence is wrong and the voltage is higher or lower than u = 380V (increase / decrease 10%), the system will automatically lock and the motor will stop running.

10. Automatic alarm locking function

It has the functions of self diagnosis and maintenance alarm. In case of alarm display, the system will automatically lock and cannot be started. After the fault is eliminated, it will automatically return to normal. If the filter element is blocked, the staff should clean or replace it in time before starting the system to filter oil.

11. Power down memory saving function

In case of power failure, the set parameters and operation data can be saved and memorized automatically.