Globe Core Transformer Oil Purification Plant CMM-4 with High Vacuum oil

СММ 4 (СММ6)

  • Removes Water from 100 ppm down to 10 ppm and from 50 ppm to 5 ppm in a single pass (ASTM method D-1533)
  • Reduces Gas content from fully saturated with air (10 to 12% by volume) to less than 0.1% (ASTM D-2945)
  • Removes Particulate Matter to 5 microns as standard or down to 0.3 micron (optional)
  • Improves dielectric strength up to 75 kV

The GlobeCore CMM-4 m3/h - oil purification plant is designed for the removal of solid particles, free and dissolved water and gases from transformer oil, lubricating oil, turbine oil and compressor oil.

The GlobeCore CMM-4 m3/h unit is able to process oil on a "tank to tank" basis or directly on an energized or de-energized transformer.

The unit can come trolley or trailer mounted, semi-automated, fully automated (PLC controlled) and explosion proof versions of this unit are available.  Optional equipment includes moisture probes, flow meter with a totalizer and 0.3 micron fine oil filter.




 1  Production capacity, m3/h:  
   - thermo-vacuum mode  4
   - heating and filtration mode  6
 2  Treated oil parameters:  
   - gas content, %, maximum  0,1
   - water content, ppm, maximum  5.0
   - purity class  (ISO 4406), minimum  9 (-/15/12)
 3  Nominal filtration rate, mkm  0.3... 5
 4  Outlet oil temperature, °С  60
 5  Oil Pressure on outlet, Mpa, minimum  0.15
 6  Heater power consumption,kW, maximum  50
 7  Total Power Consumption, kW 60
 8  Vacuum level in degassing mode, Pa, minimum 267
 9  Electrical outlet parameters 50/60 Hz, V  380/220
 10  Dimensions, mm, maximum length/width/height, mm  1625/1225/1586
 11  Weight, kg, maximum  900


Vacuum Chamber

1-Oil Inlet ; 2-Vacuum Pump Connection; 3-Coalescer; 4-Oil Outlet; 5-Level Sensor; 6-Sight Glass

The Vacuum Chamber Vessels, and all internal parts are made of carbon steel and feature Coalescers, Sight Glass, Oil Level Controller, Foam Sensor and Vacuum Gauge.  The high vacuum oil Chamber’s rigid design makes it suitable for stationary and mobile operation.  Industrial quality flexible connections are provided to both the outlet and inlet pumps to minimize the possible negative effects of vibration during plant operation and transportation.

Coalescers - Each unit has four built-in coalescers that provide for the maximum exposure of the oil to the effects of vacuum.  Due to the reduced pressure, dissolved water and gases are vaporized through the secondary chamber and filtered into the atmosphere.

Secondary Chamber (Oil Trap) - serves as a safety feature to ensure that no oil is pulled into the vacuum pump.

Vacuum Gauge - is provided to monitor high vacuum oil  level in the Vacuum Chamber.

Oil Level Controller - consists of three capacitive probes provided to maintain thae required level of oil in the Vacuum Chamber.

Foam Sensor – Rarely, but under certain conditions oil foaming may develop.  When the Optical Sensor installed in the Vacuum Chamber detects high level of foam it will actuate a Solenoid Operated Valve to reduce vacuum and foam level.

Vacuum ports – vacuum connections are provided to pull vacuum on the transformer.

motorVacuum System
Rotary Vane Positive Displacement Pump
Pumping Speed 100 m3/h
Ultimate pressure 0.5 mbar
Vacuum Booster
Pumping Speed 270 m3/h
Ultimate Pressure 0.01 mbar

gorelkaOil Heater
50 kW Oil Heater has a two stage heating facility with 25 kW of power each.  Low watt density heating elements (1.2 W/cm2) are used to prevent heat degradation of the oil. The heater is controlled by an electronic temperature controller.

motor_sInlet and Outlet Oil Pumps
“Calpeda Brand” Centrifugal pumps with power consumption of 4 kW and capacity of 12m3/h are utilized to draw oil in and out of the high vacuum oil system.  All electric motors are protected by overload detection devices.

CMM-4_7-control-cabinetInstrumentation and Controls
Manometers - are installed to monitor the state of the Coarse and Fine Filters.
Temperature controller – receives input data from a temperature sensor and is connected to a control element of the heater.

A Mesh Strainer is provided to remove large particles that could cause damage to the Inlet Pump.  A Coarse Filter for particles larger than 5 microns is installed at the entry port to the Vacuum Chamber.  Oil then receives its final treatment by passing through the Fine Filter designed to remove 99.9% of particles larger than 2 microns or with an optional 1 micron capability.

AutonicsMeasuring and control parameters are pre-set by the manufacturer.
Power and Heating Indicators and Switches, Inlet and Outlet Oil Pumps Switches– are located on the control panel.
Emergency Stop Button – is provided for safe shut down of the plant in case of emergency.

Alarms and Interlocks
The GlobeCore CMM plants feature the following safety devises that ensure simple and reliable operation and will safely shut down the system in case of any alarm situation:
High Level Alarm - will alert the plant’s operator by activating sound and light alarms and will shut down the system safely should a high level of oil persist.
Low Level Alarm – interlocked with the inlet pump low level alarm, it will safely shut down the plant in case of an insufficient oil level.
Flow Sensor - only activates the Heater when oil flow is detected.
Foam Sensor - prevents excessive foaming
Overloads – all motors are protected by overload detection devices.
Alarms – A sound and light alarm, with silence button, will alert the plant’s operator of any emergency situations.

GlobeCore CMM-4 Flow Diagram


fullers-earth-cartridges-normalOPTIONAL EQUIPMENT
GlobeCore Fuller’s Earth Сartridges (ZP-260)
GlobeCore Fuller’s Earth systems are specially engineered to remove soluble contaminants such as acids, waxes, gums, resins, carbon residues and colloidal particles from transformer oil.  They are designed for oil polishing after purification.  For large quantities of oil GlobeCore’s regeneration system is recommended.

Eplus e probeMoisture Probe
The transmitter provides on-line transformer oil measurement of both temperature and  moisture content. The unit comes complete with a display showing the level of moisture in a "ppm" readout.

Typical Oil Parameters after Tretment with Fuller's Earth

 Parameter  Test Method  Before Reclamation  After Reclamation
Appearance  Visual Cloudy Brown  Clear and transparent
Acid Number, mg KOH/g  IEC 296; ASTM D-664  0.63 0.01
Corrosive Sulphur  ISO 5662;ASTM D-1275  Present Absent
Tangent delta at 90°C  IEC 247; ASTM D-924  4.0 0.001
Oxidation Stability, mg KOH/g  IEC 1125А;IEC 1125B; IP-307  -  0.2
Surface Tension at 25°C, mN/m  ISO 6295;ASTM D-2285  22  45

GlobeCore's oil purification plants  are mounted on a tandem axle trailer covered with a canvas canopy or made of steel sidewalls with lift up doors.
A Triple axle semitrailer is also available and has a GlobeCore oil purification plant, an on-board generator with fuel tank, and an air conditioned and heated operator’s room.

GlobeCore Worldwide Sales