Home > Products > Vacuum Pump System > Vacuum Pump Systems in Transformer Insta

Vacuum Pump System

Vacuum Pump Systems in Transformer Installation and Maintenance

Category： Vacuum Pump System
Views：2318
Product Origin: CHINA
Model: VPS (double-stage)
Pumping speed: 108~4320 m3/h
Lead time: 15 ~ 20 Days
Product description：PureTech Vacuum Pump Systems is used for Transformer Vacuum Drying, that is to perform evacuation work during transformer installation and repair work. Our high-performance vacuum pump system is used
INQUIRY

Description | Vacuum Pump Systems in Transformer Installation and Maintenance

When a new transformer is installed or an existing one is opened for maintenance, its internal insulation system—comprising cellulose paper (Kraft paper) and insulating oil—is exposed to atmospheric air. This air contains moisture and gases that are detrimental to the transformer's health.

The Problem of Moisture and Gases:

Moisture is the archenemy of cellulose insulation. It drastically reduces the dielectric strength of the paper, increasing the risk of internal electrical failures. It also accelerates the aging of the cellulose, leading to a shorter transformer life.

Dissolved Gases, primarily oxygen, can lead to the formation of corrosive by-products (e.g., organic acids) and promote oil oxidation, degrading the oil's insulating properties.

PureTech high-performance vacuum pump system is used to evacuate the air from the transformer tank. This process serves two vital functions:

Removal of Moisture: By creating a deep vacuum, the boiling point of water is significantly lowered. At a pressure of 1 Torr (approximately 1 mmHg), water boils at near room temperature. This causes the moisture trapped within the solid insulation to vaporize and be efficiently removed by the pump—a process known as "vacuum drying."

Removal of Dissolved Gases: The vacuum encourages the release of dissolved gases from both the oil and the solid insulation, effectively "degassing" the system and restoring the dielectric integrity of the insulation.

A thorough and rapid vacuum drying process is critical for project timelines and transformer health. PureTech vacuum pumps are engineered to achieve and maintain the required deep vacuum levels (typically below 1 Torr) quickly and consistently, ensuring the insulation system is perfectly prepared for the next step.

The secondary application of vacuum pump systems in transformer installation and maintenance, that is Vacuum Oil Filling:

Following successful vacuum drying, the transformer must be filled with clean, dry, and degassed insulating oil. Simply pouring oil in would re-introduce air. The solution is Vacuum Oil Filling.
In this process, the vacuum pump system continues to run, maintaining the vacuum inside the transformer tank. The insulating oil, which has itself been processed through a filter press or a vacuum dehydrator, is then introduced into the tank from the bottom. Because the tank is under vacuum, the oil is drawn in smoothly without turbulence, effectively preventing the re-absorption of air and moisture. This ensures the transformer is filled with pristine oil, preserving the integrity achieved during the drying phase.

PureTech's vacuum pump systems are designed to be seamlessly integrated with oil purification systems, providing a complete, closed-loop solution for transformer processing.

Features | Vacuum Pump Systems in Transformer Installation and Maintenance

transformer evacuation systems for transformer drying • Digital vacuum gauge to indicate the working condition and monitor the performance.

• Strong, stable and reliable vacuum generated, no leaks.

• PureTech supplys vacuum pumping systems with various pumping rates of 108~6480 m³/h. (two or three stage vacuum pumps), to form a stable, deep vacuum is achieved and held for a specified duration to ensure all moisture is removed.

• Quick start, easy operation, simple structure.

• Weather-proof enclosure is optional.

• PLC automatic control and Fully touch screen is optional.

a) This picture displayed shows the model VPS-600 (pumping speed: 2000 m³/h);

b) It adopts two rotary vane vacuum pumps as the backing pump, and one roots booster vacuum pump as the main pump;
c) Its vacuum limit can reach the value of less than 1 pa.
d) It is equipped with Pirani vacuum gauge for more accurate monitoring;
e) Based on user's requirements, some optional accessories can be addes such as weatherproof housing, PLC automatic control, etc.

Technical Parameters | Vacuum Pump Systems in Transformer Installation and Maintenance

Item		Unit	VPS-30	VPS-70	VPS-150	VPS-300	VPS-600	VPS-900	VPS-1200
Pumping speed		m³/hour	108	252	540	1080	2160	3240	4320
Ultimate vacuum degree		Pa	≤ 3						≤ 1
Pumping stage			2						3
Power supply			380Volts, 50Hz, 3Phase (Or customized)
Total power		kw	3	4	5	7	8	13	18.5
Air inlet diameter		mm	25	25	40	50	65	65	80
Size	Length	mm	900	1000	1100	1200	1500	1800	2000
	Width	mm	800	800	800	900	1000	1200	1500
	Height	mm	1200	1200	1200	1500	1500	1600	1800
Weight		kg	450	550	600	900	950	1200	1500

* OPTIONAL CONFIGURATIONS: PLC automatic control system, Fully-Touch Screen, Weather-proof Enclosure, etc.

* The machine size and weight will change slightly due to different configurations.

After-Sales Service

• 12 months of quality guarantee for non-human damage.

• Lifelong maintenance and spare parts supply.

• Free training on operation, maintenance and troubleshooting at PureTech factory.

• Puretech engineers go to customer site for commissioning and training (payable service).

• Design accept user's customization.

PREVIOUS：Transformer Oil Filtration Machine With Double Degassing Chamber NEXT：Trailer-Mounted Mobile Transformer Oil Regeneration and Reclamation Plant