GlobeCore Mobile Transformer Oil Purification Plant CMM 4


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– 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
Globe Core Oil Purification Plant CMM 4 m3/h is designed for removal of solid particles, free and dissolved water from transformer, lubricating, turbine and compressor oil.
Globe Core CMM 4 Oil Purification Plant is able to process oil on tank to tank basis or directly on energized or de-energized transformer. Trolley or roadworthy trailer mounted, semi-automated, fully automated (PLC controlled) and explosion proof versions of this unit are available. Optional equipment includes moisture probes, flowmeter with totalizer and 0.3 micron fine oil filter.
№     Mobile Oil Purification Plant CMM 4      Specifications     Value

1 Production capacity, m3/h:
– thermo-vacuum mode 4
– heating and filtration mode 7

2 Treated oil parameters:
– water content, ppm, maximum 3

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 36

7 Total Power Consumption, kW 42

8 Electrical outlet parameters 50/60 Hz, V 380/220

9 Dimensions, mm, maximum length/width/height, mm 1625/1225/1600

10 Weight, kg, maximum 870


Vacuum Chamber

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

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. Vacuum Chamber’s rigid design makes it suitable for stationary and mobile installation. Appropriate flexible connections are provided to the outlet pump and inlet pump to minimize negative effect of vibration during plant operation and transportation.
Coalescers – four built-in coalescers are provided for the maximum exposure of oil to the effect of vacuum. Due to reduced pressure dissolved water and gases are vaporised through secondary chamber and filter into atmosphere.
Secondary Chamber (Oil Trap) – serves as safety feature to ensure that no oil is pulled into the vacuum pump.
Vacuum Gauge – is provided to monitor Vacuum level in the Vacuum Chamber.
Oil Level Controller – consists of three capacitive probes provided to maintain required level of oil in the Vacuum Chamber.
Foam Sensor – rarely, 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 connection is provided to pull vacuum on transformer.

Vacuum System
Rotary Vane Positive Displacement Pump
Pumping Speed 100 m3/h
Ultimate pressure 0.5 mbar

Oil Heater
36 kW Oil Heater has two stage heating facility with 18 kW of power each. A low watt density heating elements (1.2 W/cm2) are used to prevent heat degradation of oil. The heater is controlled be electronic temperature controller.

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

Instrumentation and Controls
Manometers – are installed to monitor the state of Coarse and Fine Filters.
Temperature controller – takes an input from temperature sensor and 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. 5 microns Coarse Filter is installed on entry to the Vacuum Chamber. Oil receives its final treatment by passing through the Fine Filter designed to remove 99.9% of particles larger than 2 microns or 1 micron (optional).

Measuring 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
GlobeCore CMM plants feature the following safety devises which ensure simple and reliable operation and will safely shut down the system in case of any alarm situation:
High Level Alarm – will alert plant’s operator by activating sound and light alarms and shut down the system safely should high level of oil persist.
Low Level Alarm – interlocked with the inlet pump low level alarm will safely shut down the plant in case of 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 overloads.
Alarms – sound and light alarm with silence button will alert plant’s operator of any emergency situations.

GlobeCore Oil Purification Plant CMM 4 Flow Diagram




Identification Key : vacuum column 1, oil inlet pump 2, oil outlet pump 3, pipeline system with stop and control valves 4, oil heater 5,fine filt er 6, vacuum pump 7, control panel 8.

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