In petroleum refining, the Crude Distillation Unit (CDU) (often referred to as the Atmospheric Distillation Unit) is usually the first processing equipment through which crude oil is fed. Once in the CDU, crude oil is distilled into various products, like naphtha, kerosene, and diesel, that then serve as feedstocks for all other processing units at the refinery.
ZYD Series Double Stage Vacuum Transformer Oil Purifier.pdfssusera27da01
ZYD Series Double-Stage Vacuum Transformer Oil Filtration Machine is designed for purifying used or aged transformer oil, switchgear oil,tap changer oil,mineral dielectric oil,cable oil,FR3 vegetable insulating oil,and so on. It is also used for purifying insulation oil in all kinds of large power equipments,which are above 110KV, and 500 meters altitude
The system can remove the free water, soluble water, gas, acid, PCB,free carbon (polarity material) ,big and small size particules, especially for dehydration, degassing, purification process of various kind of insulation oils, increasing the pressure force and quality of oil, improving the breakdown voltage value, making the transformers and electric device running safely.
It is very suitable for power distribution system, power grid and various companies which need to install and maintain oil-immersed transformers,de-energized transformers.
Besides the regular transformer oil purification, this machine can be also used as vacuum oil injecting and vacuum drying equipment for transformers, it is cost-effective, easy to operate.
Mobile (trailer) type is optional, completely closed structure, waterproof, dustproof, it can move long distance working in field. According to fieldwork requirement, it can be easy to move to any work point by traction. It is special suitable for purifying the transformer oil which is located in different fields
Feature:
■Double-stage, high vacuum can highly effectively remove the water in the oil. It can improve the breakdown voltage, the amount of degassing, the degree of dryness and the effect of one-time filtration.
■ Precise filtration system, multi-stage filtration can remove particulate impurities in the oil. High-quality filter medium has strong mechanical strength, high ability of containing pollution, corrosion proof and wear well.
■ Highly effective degassing and dewatering system that use large area three-dimensional flash vaporization technology to remove the water and gas in the oil.
■ Advanced pressure protection,liquid level control system and chain control system for electric heating make the operation safe.
■ It can dry electric machines and vacuum add oil to transformers.
■ Horizontal double vacuum separation technology, doubling the evaporation area and degassing time
■ Based on the high efficient vacuum oil purifier, Roots vacuum booster system and secondary high vacuum separation system are added, which enable the vacuum limit reaching ≤5Pa
In petroleum refining, the Crude Distillation Unit (CDU) (often referred to as the Atmospheric Distillation Unit) is usually the first processing equipment through which crude oil is fed. Once in the CDU, crude oil is distilled into various products, like naphtha, kerosene, and diesel, that then serve as feedstocks for all other processing units at the refinery.
ZYD Series Double Stage Vacuum Transformer Oil Purifier.pdfssusera27da01
ZYD Series Double-Stage Vacuum Transformer Oil Filtration Machine is designed for purifying used or aged transformer oil, switchgear oil,tap changer oil,mineral dielectric oil,cable oil,FR3 vegetable insulating oil,and so on. It is also used for purifying insulation oil in all kinds of large power equipments,which are above 110KV, and 500 meters altitude
The system can remove the free water, soluble water, gas, acid, PCB,free carbon (polarity material) ,big and small size particules, especially for dehydration, degassing, purification process of various kind of insulation oils, increasing the pressure force and quality of oil, improving the breakdown voltage value, making the transformers and electric device running safely.
It is very suitable for power distribution system, power grid and various companies which need to install and maintain oil-immersed transformers,de-energized transformers.
Besides the regular transformer oil purification, this machine can be also used as vacuum oil injecting and vacuum drying equipment for transformers, it is cost-effective, easy to operate.
Mobile (trailer) type is optional, completely closed structure, waterproof, dustproof, it can move long distance working in field. According to fieldwork requirement, it can be easy to move to any work point by traction. It is special suitable for purifying the transformer oil which is located in different fields
Feature:
■Double-stage, high vacuum can highly effectively remove the water in the oil. It can improve the breakdown voltage, the amount of degassing, the degree of dryness and the effect of one-time filtration.
■ Precise filtration system, multi-stage filtration can remove particulate impurities in the oil. High-quality filter medium has strong mechanical strength, high ability of containing pollution, corrosion proof and wear well.
■ Highly effective degassing and dewatering system that use large area three-dimensional flash vaporization technology to remove the water and gas in the oil.
■ Advanced pressure protection,liquid level control system and chain control system for electric heating make the operation safe.
■ It can dry electric machines and vacuum add oil to transformers.
■ Horizontal double vacuum separation technology, doubling the evaporation area and degassing time
■ Based on the high efficient vacuum oil purifier, Roots vacuum booster system and secondary high vacuum separation system are added, which enable the vacuum limit reaching ≤5Pa
www.gcequipment.com
GlobeCore CMM-R Transformer Oil Regeneration Plants are designed to improve dielectric strength and chemical composition of insulating oils. It is important to maintain oil properties within the recommended standards to prevent weakening of cellulose insulation by products of oil degradation. Since the life of the transformer is determent by the state of cellulose insulation, intervention is necessary to prevent sludge from destructing chemical bonds which hold the cellulose together. Oil Regeneration allows to remove sludge (which is formed as a result of oil degradation (aging) and consists mainly of acids, aldehydes and peroxides), improve acidity level and decrease oil’s ability to dissolve gases.
www.gcequipment.com
Tel: +380500131317
sales@gcequipment.com
Skype: stan_globecore
Series ZYD Double-stage Vacuum Transformer Oil Filtration Machine can effectively proceed the oil filtration, dehydration, degas, and particles removal for the transformer oil, insulating oil, mutual inductor oil, switchgear oil, etc.. and increase the oil's dielectric strength value. for more info, welcome to visit our website: http://www.fuootech.com
GlobeCore is one of the world leaders in industrial manufacturing. Products of GlobeCore are used in transformer oil purification and degassing, insulation oil filtration, power transformer vacuuming.
The head office is located in Oldenburg, Germany. Our systems have been supplied to and are successfully operated in 70 countries. A network of 17 dealers supports global sales and services.GlobeCore established representative offices in United States, and South Africa and in United Arab Emirates to extend reach and improve efficiency. We actively expand production and sales territories, develop our infrastructure and introduce new additional services.
GlobeCore is a member of American Wind Energy Association www.awea.orgGlobeCore today is a large and diverse company. Over 260 specialists are working as a team from metal cutting to final assembly of the products.The production facility is equipped in compliance with international industry standards: it features robotic plasma metal cutters, automated welding systems and modern PLC controlled machinery.
The engineering staff systematically develops new oil purification equipment and improves existing product lines. GlobeCore produces hundreds of units annually and each product is thoroughly tested at the company’s testing facility.Hundreds of grateful letters and comments from our clients confirm that we are moving in the right direction. During the company’s long life we have established numerous contacts and created a vast network of return clients. And we are not stopping. GlobeCore is open for potential consumers and extends an invitation to all to visit our facility.
PROCESS INTENSIFIER AVS. ELECTROMAGNETIC MILL
The AVS electromagnetic vortex
system operates by forming a vortex
layer in an electromagnetic eld
and using this layer to process
various materials.
A multitude of physical and
chemical processes occurring in
the unit's chamber pulverize
materials to micron sizes,
activate, mix and blend
various substances and
accelerate chemical
reactions by tens and
hundreds times.
WIND TURBINE SERVICE
The CMM-G unit is designed for a three-stage process of changing oil in wind turbine gearboxes1 (draining old oil, flushing the gearbox and filling it with new oil). The unit allows for quick and efficient servicing of wind turbine oil system. The unit can be used for servicing wind turbines made by many different manufacturers. The CMM-G can also heat clean oil.
The UVB-1- bitumen unit is designed for the production of anionic and cationic bitumen emulsions, which are used in road construction for the following purposes:
- tack-coating of the old road pavement base before laying new asphalt
concrete;
- preparation of cold asphalt concrete mixes;
- surface treatment of pavements;
- thin protective coatings;
- road top patching;
- dampproofing of buildings and structures;
- soft roofs construction and repairing.
GlobeCore Bitumen Emulsion Plant UVB 8 is especially designed to fulfil the requirements of a specialized road contractor or road and waterproof materials producer for manufacturing volumes of cationic and anionic bitumen emulsion. UVB 8 is available with latex injection unit. Latex makes road and waterproof materials more flexible at low temperatures and resistant to softening in warm conditions.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
1. Sales Manager
Globecore GmbH
Edewechter Landstraße 173,
Oldenburg-Eversten,
Deutschland, 26131
Tel: +49 4484 202 35 91
Email: chyk@globecore.de
Skype: mg2globecore_de
www.oilregeneration.globecore.com
GlobeCore Transformer Oil Regeneration Plant
with Fuller Earth reactivation system
CMM 12R/4000
- increases breakdown voltage
- reconstitutes oil chemical composition
- refines oil color
- increases oxidation stability
- decreases gas dissolving capacity
- reactivates Fuller earth up to 300 times free of replacement
- easy to operate and service
- operates simultaneously with drying and degassing plants
- treats transformer on-line
- treats any transformer oil.
2. Scope of application.
Many of industrial electric systems contain dielectric oils. Extending the lifetime of the equipment
and the oil it contains requires the dielectrics to be prepared and periodically treated. Thermal vacuum
drying and degassing of dielectrics is a method of such treatment. In combination with filtration this
technique allows to extend the life time of oil filled equipment significantly.
Long term use of oils causes the oils to degrade thermally and chemically. The products of such
degradation are chemical elements adversely affecting the oil’s dielectric properties as well as operation of
electric equipment. This problem is solved by periodic oil regeneration.
The plant is used during installation, maintenance and operation of oil-filled high voltage equipment
(power transformers, high-voltage switchgear, etc.).
The plant is designed for processing of electric insulation oils and servicing of transformers.
The process of dielectric oil treatment includes the following:
Removal of gases solved in the oil.
Removal of free and dissolved water.
Removal of solid particles.
Removal of oil decomposition products.
Transformer servicing includes:
Transformer evacuation.
Heating of the transformer and the active part of the windings with hot oil.
Removal of sediment from the windings.
3. Specifications.
Parameter Unit Value
Max throughput m3/hour 4
Max oil temperature о
С 90
Output pressure bar 2,5
Oil heater power kW 75
Vacuum system nominal suction rate m3/hour 280
Fuller’s earth load kg 1600
Max power consumption kW 95
Power supply
Phases 3p+1N+PE
Voltage V
AC frequency Hz
Connections
Oil input DN 40/Camlock C150
Oil output DN 40/Camlock C150
Transformer evacuation inlet DN Flange DN80
Vacuum pump exhaust DN 50
Reactivation exhaust DN 50
Filter elements specifications
Coarse filter (mesh strainer) m 100
Pre-filter with filtering element m 25
Regeneration section filter with filtering element m 0,3х2
Fine filter with filtering element
m
1
Dimensions/no trailer
Length mm 11500
Width mm 2090
Height mm 2110
Weight kg 20000
New oil specifications after processing
Parameter Unit Value
One heat and vacuum degassing cycle
Moisture content by weigth ppm 5
Gas content by volume Vol % 0.1
Three heat and vacuum degassing cycles
Moisture content by weigth ppm 3
Gas content by volume Vol % 0.05
4. Used oil specifications after regeneration
Parameter Unit Value
One heat anc vacuum degassing cycle
Moisture content by weight ppm 5
Gas content by volume Vol % 0.1
Acidity, as per IEC 296; ASTM D-664 mgКОН/g 0.01
Corrosive sulfur as per ISO 5662; ASTM D-1275 ----
Dielectric strength, as per IEC 156; ASTM D-1816 kV 70
Interfacial tension, at 25ºС as per ISO 6295; ASTM D-2285 N/m 45
Dissipation factor at 90ºС as per IEC 247; ASTM D-924 0,001
Attention! Oil specification may vary depending on initial oil condition.
Description of the plant
The unit is built on a frame, including the following sections:
Oil regeneration section
Oil degassing section
Operator room
Degassing section – the part of equipment responsible for filtration, heating and vacuum drying of oil. The
degassing section is equipped with a pipelines to supply oil to the regeneration and to receive oil from
regeneration.
Regeneration section – the part of the plant responsible for chemical restoration of the oil. The oil is
regenerated by sorbent. It can absorb products of oil decomposition, making it lighter and improving its
dielectric properties.
Operator room – the compartment containing control panel, desk etc.
Electric control cabinet – a metal case with power and control equipment. The cabinet is connected to
every electric component and each component is protected from short circuit or overheating.
5. Component diagrams and descriptions.
The control diagram is shown in the pneumatic and hydraulic chart, which contains all primary
hydraulic, pneumatic and vacuum devices and possible flows of liquids and gases.
The flow diagram is provisionally divided into the following sections:
Degassing section
Regeneration section
Pneumatic control section
Transformer Security System – TSS
Degassing section
The degassing section filters the oil and removes solved water and gas. Heated oil is processed in high
vacuum.
6. Regeneration section
The regeneration section restores the oil with the help of the sorbent. The regeneration section is equipped
with devices for sorbent reactivation.
Pneumatic distribution section
The pneumatic distribution section is designed for supply of air to the pneumatic drives of pump equipment.
Application or removal of compressed air is signaled by PLC.
7. Transformer Security System – TSS
Component locations.
All components are marked according to the flow diagram.
Figure. Component locations. Right view
C1
C2
C3
C4
C5
C6BT
BT
Connection ports area
are
H
Operator`s
area
8. Figure. Component locations. Front view
Figure. Component locations. Left view
Figure. Component locations. Back view
IM
Oil color compare
sight glasses
VC
F1
MF1
P2
P1
F2
7
8
9
1012
11
P3
F3 AC VP3
SR
CF
P4
VP4VP5 VP2
VP6 VP1
MT
IC
9. Description of the primary components of the unit
Degassing section component
MF1 – Mesh filter.
The filter is installed in the inlet line. The filter contains a 100 micron mesh. The filter can be disassembled
and washed. The filter features a flow switch at the inlet and a drain valve.
Figure. MF– Mesh filter.
F1 – Preliminary filter and F2 – Fine filter
The preliminary filter removes solid particles from the oil.
The filtering element can be removed; the design also allows draining of oil and sampling of oil after
filtration.
The filter features an automatic air release valve and filter contamination sensors.
Figure. F1 – Preliminary filter and F2 – Fine filter
Sampling valveOutput flange
Pressure after filter
sensor
Pressure before filter
sensor
Inlet flange
Cover
Oil heater
Oil drain switch
Filter mesh
Oil flow switch
Cover
Inlet flange
Outlet flange
Filtering element with
magnets
Air release valve
Oil drain valve
10. Н1– Oil Heater
The oil heater consists of two 35 kW sections.
The heater is of unique design. It is inertia-free and low mean surface power (up to 1.1 W/cm2
).
Figure. Н- oil heater.
OT – Oil Trap
The oil trap is a cylindrical vessel accumulating oil which may enter the vacuum system and drains into the
vacuum chamber.
The trap features an oil level sensor, vacuum sensor, foam level control sensor, vacuum break, oil drain
and cutoff valves.
Figure. OT- oil trap
Oil drain valve
Oil heaterCover
Outlet flange
Input flange
Thermostat
Heater terminals
protection cover
Vacuum break and oil
drain valve
Outlet flange
Inlet flange
Vacuum column cutoff
valve
Level sensor
Foam level sensor
Vacuum sensor
11. VC – Vacuum chamber.
The vacuum chamber is a metal vessel with coalescers; the oil emits moisture and gas on the surface of the
coalescers under the influence of temperature and vacuum.
The chamber contains level sensors, foam sensor, a sight glass with lighting and a drain valve.
Figure. Н- Vacuum column. Left view
Figure. Н- Vacuum column. Right view
Oil drain valve
Vacuum chamber
Oil level sensor
Outlet flange
Coalescers
Foam sensor
Air/moisture outlet
Oil inlet
Light
Sight glass with light
12. IM – Inhibitor mixer
Inhibitor mixing assembly blends an antioxidant additive with oil.
The mixer is equipped with a bin for loading of the additive with a cover.
The mixer features level sensors and a vane agitator with drive.
The mixer features level sensors and a vane agitator with drive.
Figure. IM- Inhibitor mixer
С1…С12 sorbent columns.
The columns contain sorbent. The sorbent is able to accumulate oil degradation products. The columns are equipped
with a sorbent ignition device and thermal sensors. The sorbent layer is supported by a screen in the bottom of the
column. A hatch is installed in the lower portion of the column for cleaning and servicing.
When the sorbent in the column is burning, the conflagration is moving from top to bottom. This removes oil decay
products. The process is monitored with the help of thermal sensors. The sensors are located along the column in
column 1, and at the top and bottom of the remaining columns. The burning process occurs at 500-700o
C and takes
approximately 16 hours. After the lower part of the column cools to 100o
C, the process is complete.
Bin
Cover
Drain valve
Level sensor
Level sensor
Mixer drive
Inlet/outlet flange
13. Figure. Sorbent column.
IC – Intermediary tank
This tank accepts oil after regeneration, captures and releases air. During sorbent reactivation, the vessel
accumulates waste oil pumped into the buffer tank.
An automatic air release valve is installed in the tank.
Level sensors and a visual level tube facilitate level monitoring.
An oil drain valve facilitates draining of oil from the tank.
Figure. IC – Intermediary tank
Temperature sensor
Sorbent ignition device
Sorbent
Service hatch
Retaining screen
Inlet flange
Outlet flange
Visual level tube
Oil drain valve
Level sensor
Outlet flange
Outlet flange
Outlet flange
14. MT- Demister
This tank is designed for separation of heavy fraction and moisture from burning products. The vessel is equipped
with a sight glass and an emergency condensate level sensor. The vessel reduces the influence of exhaust on the
vacuum pump.
Figure. MT- Demister
SR- Noise suppressor.
During sorbent reactivation the vacuum system generates a lot of noise. The noise suppressor reduces that noise.
Condensate may accumulate in the suppressor during operation. A valve for draining is installed in the device.
Figure. СF Charcoal filter.
Visual level tube
Oil drain valve
Level sensor
Outlet flange
Inlet flange
Drain valve
Service hatch
Inlet
Outlet
15. F3 – Filter
During regeneration, the oil can carry out sorbent particles. A filter is installed to capture these particles.
The filter is a metal vessel containing replaceable filter element. The filter element must be changed from
time to time. Frequency of change depends on quality of processed oil.
Filter element is pressed down by a spring loaded lid.
The filter is equipped with an automatic valve for air release and a drain valve for oil.
Figure. F1 Filter
BT- Buffer tank
The buffer tank contains oil reserve. The reserve is necessary to compensate for oil loss during sorbent
reactivation. In the process of reactivation, some of the oil burns out, and some is pumped into the buffer
tank.
The buffer tank is divided into two compartments: “Clean Oil Area” and “Dirty Oil Area”.
“Clean Oil Area” is designed for storage of clean oil, which enters the unit in the filling stage, as well as for
draining columns before reactivation.
“Dirty Oil Area” is designed for storage of dirty oil during sorbent reactivation. It is recommended to drain
at least 60 liters of settling oil before each reactivation.
The unit is serviced through a hatch, drain valves are installed for the oil, oil level is monitored visually in
level tubes.
Side view Cut away view
Figure. BT- Buffer tank
Air release valve
Filter element
Spring loaded lid
Oil drain valve
Inlet flange
Output flange
Visual level tube
“Dirty Oil Area ”
Visual level tube
“Clean Oil Area ”
Drain valve
“Clean Oil Area ”
“Dirty Oil Area ”
Level sensorService hatch
Level sensor
16. Principles of operation
The plant may be operated automatically or manually.
The plant operates in the following stages:
Plant filling.
Degassing section filling
Regeneration section filling
Connection to transformer or other equipment.
Warm up and air release from hoses.
Regeneration of oil in transformer.
Degassing and regeneration of oil
Sorbent reactivation
Resuming oil regeneration and degassing
Normal stop
Plant filling.
This stage is necessary when working with a transformer. Over 3000 liters of oil is required to fill all vessels
of the plant. When the plant is connected to a transformer, the oil level may drop below critical. Fill the
unit with oil to the transformer.
The plant may be filled manually or automatically.
Electric power connection
Electric power is connected to a separate terminal box. The box contains three terminals and 1 grounding
lug. Each terminal corresponds to a certain phase. The terminals are marked A B C.
Figure. Electric power connection terminal box
Power is connected by a 3 wire cable with wire cross section of no less than 240mm2
. Connection of two
wires of 120 mm2
each to one terminal is also possible if necessary.
Grounding cable in
Phase A in
Phase B in
Phase C in
Cable connection buses
17. One 120mm2
wire is used for grounding.
To connect ground, secure the wire to the grounding lug and connect the other end of the cable to the
transformer grounding circuit.
For regenerating oil NOT from a transformer, connect unit grounding to any other grounding circuit.
Connection panel and connection of the plant to oil-filled systems
Connection of the plant to oil-filled systems is facilitated by the connection panel. This panel contains all
valves and connection point requiring constant access and servicing.
Transformer evacuation valve
Oilinletvalves
Oiloutletvalves
AirtobottomTSSvalve
AirtotopTSSvalve
Transformervacuumbreakvalve
Oilwastedrainvalve
Figure. Connection valve panel
Control panel and electric control description
All electric components are connected to the electric components. The control cabinet is separated into
two parts: power and control.
The power compartment contains all protection circuit elements, automatic switches, breakers and pump
contactors.
The control compartment contains the controller, frequency variators and several automatic switches.
18. The plant is controlled from a laptop computer with pre-installed Windows 7® and SCADA
Movicon® system.
A USB key is supplied for operation with the SCADA system. This key contains unique licensing information
for control system start.
Before operation, connect the key to a USB port of the PC.
SCADA system description
The SCADA (Supervisory Control And Data Acquisition) system offers the operator access to all elements of
the plant.
The operator may control the plant operation, select various operation modes, monitor sensor indications
and view event log.
The system consists of several screens. Each control mode uses its own screen.
Mode selection is made in the main screen. The following modes are selectable:
Manual control (MANUAL)
Plant filling (CHARGING)
Degassing and regeneration mode (DEGASING/REGENERATION)
Abnormal event mode (ALARM)
Control elements are shown in the mimic diagram on the screen. The diagram shows all pumps, valves,
sensors etc.
The mimic diagram is a simplified flow representation of the plant. All controlled valves are shown
according to their position in the process diagram.
19. The top part of the diagram shows the regeneration section, with transformer oil level and TSS status in
the lower left part, and degassing section in the lower right part.
Regeneration unit
TTS oil level monitor
Oil degasing unit
Figure. Control system mimic diagram
The diagram is displayed in MANUAL, CHARGING and REGENERATION/DDEGASING modes.
Faults are displayed in a sceen showing fault title, date, time and fault status.
Figure. Fault screen
BT C1…C12 IC MT CGC
IM VCF2F1 H1 OT
BV1000