1. Title of Invention

High voltage circuit breaker design using ultra pure water as medium for higher performance

2. Applicant

Name : EESAVYASA TECHONOLOGIES PVT. LTD

Nationality -.INDIAN

Address : R&D centre, Plot No: 79, Phase - III, Balanagar, Hyderabad, R.R. District, Andhra Pradesh, Pin - 500037, INDIA.

3. Preamble to the description:

Complete Specification:

Summary:

In this method of invention usage of pure water synthesized by chemical method which is completely free from molecular level impurities of other substances. Pure water in liquid form or in vapour form will be filled within the chamber where contacts are arranged. The purest form of water being the medium of highest dielectric constant available till date, its usage in the place of SF6 not only reduces the cost but abnormally increases the efficiency of the circuit breaker.

4. Description

This Circuit Breaker contains pure water as the insulating medium between the contacts. Water is an excellent gaseous as well as liquid dielectric medium for high voltage power applications. SF6 has been used extensively in medium and high voltage circuit breakers and other switch gears employed by power industries in existing systems. But replacing SF6 with pure water without no other chemical molecule as impurity can provide excellent medium and cut down the cost.

Several characteristics of circuit breakers can explain their success:

• Simplicity of the interrupting chamber which does not need an auxiliary breaking chamber

• High electrical endurance, allowing at least 25 years of operation without reconditioning;

• Reliability and availability

• Low/no noise levels

The present invention Circuit Breaker contain pure water as the insulating medium for operating even at very low temperature environment.

BACKGROUND OF THE INVENTION Operation:

In general, Circuit Breakers consist of two main parts, the poles and the mechanism. The poles consist of contact and arc-extinguishing devices. The mechanism is the part to open or close the contacts in the poles at the same time instantaneously (with max. 5 milli sec. Tolerance). The closing and opening procedures are performed through solenoids which operate through auxiliary AC 220V supply. High voltage circuit-breakers exist comprising a sealed insulating enclosure having a set of fixed contacts and a set of moving contacts located therein, with each set of contacts including a main contact and an arcing contact. The inside of the enclosure is filled with a dielectric gas which is at least partially constituted by sulphur hexafluoride at a pressure of several bars. When the temperature of the circuit-breakers environment falls, the temperature of the gas inside the circuit-breaker also falls, thereby reducing its pressure. Such a reduction in pressure lowers the dielectric strength of the circuit-breaker and this may lead to arcs being re-struck between the contacts during circuit interruption-,

6. Brief description of drawing:

1. Fixed contact

2. Arc

3. Orifice

4. Oil level indicator

5. Top Terminal

6. Top porcelain covering interrupting chamber

7. Bottom porcelain covering insulated connected rod

8.3 pole interconnecting housing

9. Structure10. Machanism box 11. Moving contact

12. Pure water

7. Claims

1. In a high voltage circuit breaker, with a hydraulic actuator, the lines of which consist of insulating material and lead through pure water, the improvement which comprises surrounding a high pressure hydraulic line by a low pressure hydraulic line, said low pressure line consists of insulating material which is impervious to attacks by the decomposition products of the pure water without molecular impurities and zero conductivity nature, and the high pressure line consists of glass fibre reinforced insulating material.

2. Pure water based high-tension circuit-breaker comprising a circuit-breaking chamber in communication with and supported by a support column,, characterized in that it includes a condenser/evaporator

3. This kind of circuit breakers can be used where high temperature fluctuations are possible in cold countries and at polar regions